WO2011048824A1 - 真空断熱材及び断熱箱及び冷蔵庫及び冷凍・空調装置及び給湯装置及び機器及び真空断熱材の製造方法 - Google Patents
真空断熱材及び断熱箱及び冷蔵庫及び冷凍・空調装置及び給湯装置及び機器及び真空断熱材の製造方法 Download PDFInfo
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- WO2011048824A1 WO2011048824A1 PCT/JP2010/052246 JP2010052246W WO2011048824A1 WO 2011048824 A1 WO2011048824 A1 WO 2011048824A1 JP 2010052246 W JP2010052246 W JP 2010052246W WO 2011048824 A1 WO2011048824 A1 WO 2011048824A1
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- Prior art keywords
- heat insulating
- fiber assembly
- fiber
- vacuum heat
- core material
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/181—Construction of the tank
- F24H1/182—Insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2500/00—Problems to be solved
- F25D2500/02—Geometry problems
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/857—Thermoelectric active materials comprising compositions changing continuously or discontinuously inside the material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/231—Filled with gas other than air; or under vacuum
Definitions
- the present invention relates to a vacuum heat insulating material and a heat insulating box using the vacuum heat insulating material, particularly a vacuum heat insulating material and a heat insulating box suitable for use in a cooling / heating device, a refrigerator, a device, a house (wall surface, etc.) and the like.
- the equipment of the present invention includes vending machines, cold storages, refrigerators, water heaters, domestic or commercial water heaters (water heaters), domestic or commercial refrigeration / air conditioners, showcases, jar pots, and other vacuums. Includes equipment that can use insulation.
- urethane foam has been used as a heat insulating material used in a heat insulating box such as a refrigerator.
- a heat insulating box such as a refrigerator.
- a vacuum heat insulating material having better heat insulating performance than urethane foam is embedded in urethane foam.
- Such a vacuum heat insulating material is also used for a refrigerator or the like.
- the vacuum heat insulating material is configured by inserting powder, foam, fiber, etc. as a core material in an outer packaging material made of a plastic laminate film using an aluminum foil as a gas barrier layer.
- the inside of the vacuum heat insulating material is kept at a degree of vacuum of several Pa (Pascal) or less.
- an adsorbent that adsorbs gas and moisture is disposed in the outer packaging material in order to suppress the deterioration of the degree of vacuum, which is a cause of lowering the heat insulating performance of the vacuum heat insulating material.
- the core material of the vacuum heat insulating material powders such as silica, foams such as urethane, fiber bodies and the like are used. At present, glass fibers having excellent heat insulation performance are mainly used as core materials for vacuum heat insulating materials.
- the fiber material examples include inorganic fibers such as glass fiber and ceramic fiber (for example, see Patent Document 1 and Patent Document 8).
- organic fibers such as polypropylene fiber, polylactic acid fiber, aramid fiber, LCP (liquid crystal polymer) fiber, polyethylene terephthalate fiber, polyester fiber, polyethylene fiber, and cellulose fiber (see, for example, Patent Document 2 and Patent Document 7).
- the shape of the fibrous body includes a cotton-like shape and a laminate of sheets (for example, see Patent Document 3 and Patent Document 4). Also, there are sheets in which sheets are laminated so that fiber orientations are alternated (see, for example, Patent Document 5, Patent Document 6, and Patent Document 12).
- glass fibers are mainly used as the core material in the current vacuum heat insulating material.
- glass fiber is hard and brittle, dust may be scattered during the manufacture of a vacuum heat insulating material, which may cause irritation when it adheres to the skin / mucous membrane of an operator, and its handling and workability are issues.
- each product is pulverized in a recycling factory.
- the glass fiber is mixed with urethane waste and is subjected to thermal recycling.
- Glass fiber has the problem that recyclability is not good, such as reducing combustion efficiency and becoming a residue.
- polyester fiber as the core material are excellent in handleability and recyclability.
- the one using polyester fiber as the core material has a thermal conductivity of about 0.0030 [W / mK] (for example, see Patent Document 7), which is an index representing heat insulation performance.
- the thing using polyester fiber as a core material has the difficulty that it is inferior to heat insulation performance compared with the general vacuum heat insulating material (about thermal conductivity 0.0020 [W / mK] grade) which used glass fiber as a core material. .
- the core material when an organic fiber aggregate is used as the core material, if the thickness of one sheet (expressed by basis weight) is thin, the fiber is deformed by the compressive force or temperature due to the vacuum pressure during vacuum forming. When the fiber is deformed, the thickness is significantly reduced, and the number of laminated layers may be significantly increased.
- a vacuum insulation material is manufactured by inserting a core material such as glass fiber into an outer packaging material such as an aluminum foil laminate film and sealing the inside under reduced pressure
- the core material is enclosed in an outer packaging material such as an aluminum foil laminate film.
- the glass fiber may pierce the outer packaging material and damage or break the outer packaging material. If the glass fiber core material is not inserted directly into the outer packaging material, It is inserted into the outer packaging material in a state where it is inserted into a separate bag such as a bag, and an extra plastic bag is required, which complicates the manufacturing process of the core material and vacuum insulation material, and increases the cost. It was.
- the vacuum heat insulating material using glass fiber as the core material has excellent heat insulating performance.
- glass fiber processing powder scatters around the hole or notch, and the outer packaging material around the hole is sealed and welded.
- the vacuum heat insulating material described in Patent Document 9 is a sheet comprising organic fibers of short fibers with a core material size of 200 mm ⁇ 200 mm and a fiber length of 10 to 150 mm, preferably 20 to 80 mm.
- the fiber assembly is used.
- seat is cut out by the magnitude
- the fibers are cut by cutting through holes. At this time, the fiber length of the remaining fibers remaining on the sheet side may be extremely shortened.
- the fiber length of the remaining fiber is short, it cannot be entangled with the existing fiber present in the sheet, and the remaining fiber protrudes or scatters from the periphery of the through hole and enters the sealing portion of the outer packaging material around the through hole. There was a risk of seal failure.
- the vacuum heat insulating material described in Patent Document 12 includes a first fiber layer in which the thickness of the first fiber layer and the second fiber layer whose end faces are cut is substantially equal to the thickness of the fiber.
- the second fiber layer is laminated so that the stretching or rolling directions are not parallel to each other (substantially at right angles), but there is no description about the fiber length.
- FIG. 2 shows a case where the fiber length is shorter than the width of the sheet. When the fiber length is shorter than the width of the sheet, the remaining fiber protrudes or scatters from the cut end surface of the sheet. There was a risk of sealing failure by entering the seal part of the material.
- the remaining fiber remaining on the sheet is shortened by the cut, so the remaining fiber protrudes or scatters from the cut sheet end face and seals the outer packaging material There was a risk of entering a part and causing a seal failure.
- the length direction of the sheet appears to be equal to the length of the sheet, but there is no specific description, and the length in the width direction is shorter than the width of the sheet. Therefore, there is no description regarding the fiber length, such as using different fiber lengths for the first fiber layer and the second fiber layer, and therefore no consideration is given to the fiber length. (It is not considered that the remaining fiber protrudes or scatters and enters the sealing portion of the outer packaging material to cause a sealing failure.)
- the initial fiber length is 80 mm.
- the remaining fiber remaining on the sheet is 5 mm.
- the remaining fibers are as short as 5 mm, they cannot be held on the sheet by being entangled with the existing fibers of the sheet, and there is a possibility that the sheet protrudes from the periphery of the through hole or jumps out.
- the remaining fibers remaining on the sheet protrude from the end surface of the core material when the end surface of the core material or fiber assembly is cut to make the core material into a sheet of a predetermined size. Or when it is inserted into the outer packaging material and sealed, there is a risk that a sealing failure may occur between the sealing portions. Therefore, it is necessary to lengthen the seal length, which increases the cost.
- the glass fiber is excellent in heat insulating performance.
- glass fiber is hard and brittle, it is difficult to perform bending after vacuum.
- the glass fiber is excellent in heat insulating performance.
- glass fiber is hard and brittle, it cannot be deformed into a pipe shape even if it is attempted to insulate by placing a pipe such as a condensation pipe between a vacuum heat insulating material and a vacuum heat insulating material. There is a corresponding gap. For this reason, heat leaks from the gaps between the vacuum heat insulating materials, and the heat insulating performance is greatly deteriorated.
- the vacuum heat insulating material described in Patent Document 10 uses fine powders such as silica and pearlite, and glass fiber (glass fiber) or open cell foamed urethane heat insulating material for the core material. And it is described that a groove is formed in the core material of the vacuum heat insulating material and bent from the groove.
- fine powders such as silica and pearlite, glass fibers, and the like are used for the core material, so that the handleability is poor as described above, and there are problems in recycling.
- the present invention has been made to solve the above-described problems, and includes a vacuum heat insulating material having at least one of the following characteristics, a heat insulating box using the vacuum heat insulating material, and an automatic using the heat insulating box.
- the purpose is to provide equipment such as vending machines, refrigerators, refrigerators, water heaters, refrigeration and air conditioners.
- Hole machining, notching and bending are easy, sealing properties are good and low cost, heat insulating performance is good, and handling is easy.
- the shape and size of the bent portion can be changed in accordance with the bending size of the bending process, and manufacturing is easy. (6) A dent along the pipe shape is provided.
- the vacuum heat insulating material according to the present invention is composed of a laminated structure of an organic fiber assembly in which fibers are formed in a sheet shape, and includes a core material having a cut portion whose end face is cut at a predetermined length or width, and the core A gas barrier outer packaging material that has a seal portion in a range larger than the core material by a seal length and seals the interior in a decompressed state, and the fiber is provided with the core material. Fibers that are continuous to a length equal to or greater than the length or width of the fiber are used, and residual fibers generated by cutting are prevented from protruding from the cut portion.
- the cut portion of the non-woven sheet (for example, the cut portion of the end face of the sheet, the cut portion of the hole processing, or the notch processing) It is possible to suppress the remaining fibers generated by the cut from protruding into the cut portion of the portion), and the remaining fibers generated by the cut from the cut portion generated when the short fiber is used as the core material. Does not occur. Therefore, when the core material is inserted into the outer packaging material and sealed, the sealing performance is not impaired by the remaining fibers protruding.
- an organic fiber non-woven sheet is used as a core material, a vacuum heat insulating material excellent in processability, handleability, heat insulating performance and productivity, and a heat insulating box, vending machine, and cold storage room equipped with this vacuum heat insulating material.
- Equipment such as refrigerators, water heaters, refrigeration / air conditioning units, showcases, etc. can be provided.
- FIG. 5 shows the first embodiment and is a schematic view of the vacuum heat insulating material 7 and is a perspective view of the core material 5 of the vacuum heat insulating material 7 in which a plurality of nonwoven fabric sheets are laminated.
- FIG. 5 shows the first embodiment and is a schematic view of the vacuum heat insulating material 7 and is a side view showing the orientation of fibers in one nonwoven fabric sheet.
- FIG. 5 shows the first embodiment, and is a schematic diagram of the vacuum heat insulating material 7, and is a side view showing the fiber orientation when the core material 5 has a thickness.
- FIG. 5 shows the first embodiment and is an exploded perspective view showing the configuration of the vacuum heat insulating material 7.
- FIG. 5 is a diagram showing the first embodiment and is a perspective view schematically showing a stacked state of the core material 5 forming the vacuum heat insulating material 7.
- FIG. 5 is a diagram showing the first embodiment, and is a perspective view schematically showing a raw fabric roller and a winding frame of a laminating device for a core material 5 that forms a vacuum heat insulating material 7.
- FIG. 4 shows the first embodiment and is a diagram showing the structure of a reel of a vacuum heat insulating material manufacturing apparatus. The figure which shows this Embodiment 1 and is a figure showing the clamp member which clamps the organic fiber assembly wound up by the winding frame of the vacuum heat insulating material manufacturing apparatus.
- FIG. 5 shows the first embodiment and shows a method for manufacturing a vacuum heat insulating material.
- FIG. 5 shows the first embodiment and is a schematic diagram of another reel.
- FIG. 5 shows the first embodiment and is a schematic diagram showing the shape of a vacuum heat insulating material.
- the figure which shows Embodiment 1 and is a figure showing the structure of the combination original fabric roll which has one big width
- FIG. 5 shows the first embodiment, and is a schematic diagram of a winding device when two combined original fabric rolls are used and wound on a winding frame.
- FIG. 5 shows the first embodiment and is a schematic diagram of another reel.
- FIG. 5 shows the first embodiment and is a schematic diagram showing the shape of a vacuum heat insulating material.
- the figure which shows Embodiment 1 and is a figure showing the structure of the combination original fabric roll which has one big width
- FIG. 5 shows the first embodiment, and is a cross-sectional view of a core material wound up by a winding device that uses two combined original fabric rolls.
- FIG. 5 shows the first embodiment and is a perspective view showing a state in which the vacuum heat insulating material is bent.
- FIG. 5 shows the first embodiment, and is a correlation diagram illustrating the heat insulating performance of the vacuum heat insulating material 7.
- FIG. 5 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an enlarged vertical cross-sectional configuration of a core material 5 used for a vacuum heat insulating material 7.
- FIG. 5 shows the first embodiment, and shows the measurement result of the thermal conductivity of the vacuum heat insulating material 7.
- FIG. 10 is a diagram illustrating the first embodiment and is a graph of the measurement result illustrated in FIG. 9.
- FIG. 5 shows the first embodiment, and is a cross-sectional view of a nonwoven fabric that is the fiber assembly 1 of the vacuum heat insulating material 7.
- FIG. 5 shows the first embodiment, and shows the correlation between the weight per unit area of the vacuum heat insulating material 7 and the thermal conductivity.
- FIG. 5 shows the first embodiment, and shows the correlation between the weight per unit area of the vacuum heat insulating material 7 and the thermal conductivity.
- FIG. 5 shows the first embodiment, and is a cross-sectional view of a nonwoven fabric that is the fiber assembly 1 of the vacuum heat insulating material 7.
- FIG. 5 shows the first embodiment, and shows the relationship between the weight per unit area of the vacuum heat insulating material 7 and the thermal conductivity.
- FIG. 5 is a diagram showing the first embodiment, and is a fiber assembly 1 constituting a core material 5,550, a continuous sheet-like fiber assembly 1J, a first (organic) fiber assembly 1K, and a second (organic) fiber assembly.
- the correlation diagram showing the relationship between the fabric weight of the vacuum heat insulating materials 7 and 750 in the case where heat welding is provided on the body 1H and the compression strain.
- the weight per unit area of the vacuum heat insulating material 7 and the number of stacked layers (the number of stacked layers when the thickness of the vacuum heat insulating material is a predetermined thickness, for example, the thickness after evacuation is a predetermined thickness) Diagram showing the relationship.
- FIG. 1 is a diagram showing the first embodiment, and is a fiber assembly 1 constituting a core material 5,550, a continuous sheet-like fiber assembly 1J, a first (organic) fiber assembly 1K, and a second (organic) fiber assembly.
- the correlation diagram showing the relationship between the fabric weight of the vacuum heat insulating
- FIG. 5 shows the first embodiment and is a front view of vacuum heat insulating materials 7 and 750 having openings.
- FIG. 5 shows the first embodiment and is a diagram showing the state of the opening of the core material 5, 550 of the vacuum heat insulating material 7, 750 when short fibers are used for the core material 5, 550.
- the figure which shows Embodiment 1 and is a sectional side view of the front view which illustrates a heat insulation box and shows the example of application to the refrigerator 100 typically.
- FIG. 1 shows the first embodiment and is a front view of vacuum heat insulating materials 7 and 750 having openings.
- FIG. 5 shows the first embodiment and is a diagram showing the state of the opening of the core material 5, 550 of the vacuum heat
- FIG. 3 shows the first embodiment and is a cross-sectional view of the refrigerator 100.
- FIG. Fig. 24 shows the first embodiment and is a schematic diagram showing the core material 5 of the vacuum heat insulating material 7 used for the heat insulating partition of the refrigerator 100 shown in Fig. 23.
- FIG. 5 shows the first embodiment and is a schematic diagram showing a vacuum heat insulating material 7 used for a heat insulating partition of the refrigerator 100.
- FIG. FIG. 5 shows the first embodiment and is another cross-sectional view of the refrigerator 100.
- FIG. FIG. 5 shows the first embodiment and is a schematic diagram showing a vacuum heat insulating material 7 used for a heat insulating partition of the refrigerator 100.
- FIG. FIG. 24 shows the first embodiment and is a schematic diagram showing the core material 5 of the vacuum heat insulating material 7 used for the heat insulating partition of the refrigerator 100 shown in Fig. 23.
- FIG. 5 shows the first embodiment and is a schematic diagram showing a vacuum heat insulating material 7 used for
- FIG. 5 shows the first embodiment and is a schematic diagram showing the core material 5 of the vacuum heat insulating material 701.
- FIG. 3 is a diagram illustrating the first embodiment and is a schematic diagram illustrating a vacuum heat insulating material 701 used for heat insulation of a compressor 600 and a hot water storage tank of a water heater.
- at least one original fabric roll 1307 having a first predetermined width and an original fabric roll having a width smaller than the first predetermined width are made substantially equal to the first predetermined width.
- It is a schematic diagram of the winding apparatus in the case of winding up to the winding frame 1311 using the at least 1 combination original fabric roll 1305 combined with the width direction, and represents the manufacturing method of another core material of this Embodiment. Figure.
- FIG. 5 is a diagram showing the first embodiment, and is a perspective view of a core material manufactured by winding it on a winding frame using at least one original fabric roll 1307 having a predetermined width and at least one combined original fabric roll.
- FIG. 5 is a diagram showing the first embodiment, and is a cross-sectional view of a core material manufactured by winding it on a winding frame using at least one original fabric roll having a predetermined width and at least one combined original fabric roll.
- FIG. 5 is a diagram showing the first embodiment, and is a perspective view of a vacuum heat insulating material using a core material manufactured by winding it on a winding frame using at least one original fabric roll having a predetermined width and at least one combined original fabric roll. Figure.
- FIG. 1 to 4 are diagrams showing Embodiment 1
- FIG. 1 is a schematic view of a vacuum heat insulating material 7, and is a perspective view of a core material 5 of a vacuum heat insulating material 7 in which a plurality of nonwoven fabric sheets are laminated
- FIG. It is the schematic diagram of the vacuum heat insulating material 7, Comprising: The side view showing the orientation of the fiber in one nonwoven fabric sheet
- FIG. 3 is the schematic diagram of the vacuum heat insulating material 7, Comprising: The fiber in case the core material 5 has thickness
- FIG. 4 is an exploded perspective view showing the configuration of the vacuum heat insulating material 7.
- the core material 5 has a laminated structure in which, for example, a sheet-like fiber assembly 1 (for example, an organic fiber assembly using organic fibers 2) with at least one end face cut is laminated. . That is, in the core material 5 shown in FIG. 1, after a plurality of substantially rectangular fiber assemblies 1 (for example, organic fiber assemblies) are stacked, at least one of the substantially rectangular four sides is cut. A sheet shape is formed. Alternatively, after at least one of the four sides of the substantially rectangular fiber assembly 1 is cut, a plurality of layers are stacked to form a substantially rectangular sheet shape.
- the core material 5 may be simply referred to as a core material.
- the fiber assembly 1 is an organic fiber assembly in which, for example, organic fibers 2 are used in the present embodiment, and a plurality of organic fibers 2x arranged at predetermined intervals, It is formed from a plurality of organic fibers 2y arranged at a predetermined interval in a direction substantially orthogonal to the fibers 2x.
- the organic fiber 2x and the organic fiber 2y are almost in point contact. Between the organic fibers 2y, an air layer 3 which is a heat insulating space is formed.
- the organic fiber 2x is a generic term for the organic fiber 2x and the organic fiber 2y.
- the fibers are easily oriented so as to face the thickness direction, which is the heat transfer direction.
- the organic fiber 2 (sometimes simply referred to as a fiber) is a short fiber having a short fiber length (for example, a fiber length of about 5 to 150 mm)
- the short fiber faces the thickness direction, which is a heat transfer direction. It becomes easy to be oriented like this. Heat is transmitted from the front side to the back side of the sheet via the short fibers (indicated by arrows in FIG. 3), and the heat insulating performance is deteriorated.
- the fiber assembly 1 is thinly laminated to form a thin sheet, so that the fibers are in the heat transfer direction (the fiber lamination direction of the fiber assembly 1, the thickness direction of the sheet-like fiber assembly 1). It can suppress being oriented toward. Thereby, it can suppress that heat
- a solid line arrow and a dotted line arrow indicate the direction of heat transfer. Since the organic fiber 2x and the organic fiber 2y are substantially orthogonal to each other, the contact portion between the organic fiber 2x and the organic fiber 2y becomes a point contact, so that the heat resistance is increased and the heat insulation performance is improved.
- the present embodiment is not limited to this.
- the organic fiber 2x and the organic fiber 2y may intersect at an angle that is not perpendicular to each other. It is sufficient that all of the organic fibers 2x and the organic fibers 2y are not arranged in parallel. If it is possible to suppress even a slight decrease in heat insulation performance due to heat transmitted through the fibers oriented in the heat transfer direction, the heat insulation performance can be improved. Moreover, even if it is a parallel arrangement, there is no problem as long as necessary heat insulation performance can be secured.
- the vacuum heat insulating material 7 includes a gas barrier container (hereinafter referred to as “external packaging material 4”) having air barrier properties, a core material 5 and an adsorbent 6 (for example, gas) enclosed in the external packaging material 4. Adsorbent and moisture adsorbent (CaO). The inside of the outer packaging material 4 is depressurized to a predetermined degree of vacuum (several Pa (pascal) to several hundred Pa).
- the vacuum heat insulating material 7 may be simply referred to as a vacuum heat insulating material.
- the organic fiber 2 is used as the organic fiber 2 forming the core material 5 of the vacuum heat insulating material 7.
- a material used for the organic fiber polyester, polypropylene, polylactic acid, etc. Aramid, LCP (liquid crystal polymer), PPS, polystyrene and the like can be used.
- a heat resistant resin such as LCP (liquid crystal polymer) or PPS (polyphenylene sulfide) may be used for the organic fiber 2.
- LCP liquid crystal polymer
- PPS polyphenylene sulfide
- the vacuum heat insulating material 7 with the high heat resistance excellent in the compression creep characteristic and high heat insulation will be obtained.
- Polystyrene has a low solid thermal conductivity and can be expected to improve the heat insulating performance of the heat insulating material, and can be manufactured at low cost.
- Polypropylene has low hygroscopicity, so drying time and evacuation time can be shortened and productivity can be improved. Moreover, since the solid heat conduction is small, the heat insulation performance of the vacuum heat insulating material 7 can be expected.
- polylactic acid is biodegradable
- the core material disassembled and separated after use of the product can be subjected to landfill treatment.
- aramid and LCP have high rigidity, they have good merits, such as good shape retention when vacuum-packed and subjected to atmospheric pressure, and can be expected to improve heat insulation performance by increasing porosity.
- the core material 5 supports the atmospheric pressure to secure a space in the vacuum heat insulating material 7, and finely divides the space to heat the gas. It plays a role of reducing conduction. From the viewpoint of suppressing heat conduction of gas, it is desirable that the distance of this space be smaller than the free stroke distance of air molecules at the degree of vacuum.
- the organic fiber 2 is used for the core material 5 of the vacuum heat insulating material 7, for example, compared to the case where a hard and brittle glass fiber is used as a core material as in the past,
- the vacuum heat insulating material 7 is manufactured, dust does not scatter and adhere to the operator's skin, mucous membrane, etc., and irritation is eliminated, improving handling and workability.
- the fiber assembly 1 forming the core material 5 (same as the organic fiber assembly and the sheet-like assembly) is made of a polyester resin or a polystyrene resin that is heated and melted from a number of nozzles arranged in a row with respect to the width to be manufactured.
- the resin is freely dropped on the conveyor, and the conveyor is pressed with a pressure roller while being moved at an arbitrary speed, and is wound around a cylindrical original fabric roller to produce a substantially cylindrical original roll material.
- the bulk density of the fiber assembly 1 can be adjusted by the amount of molten resin discharged and the speed of the conveyor to obtain fiber assemblies 1 having different thicknesses.
- the long fiber nonwoven fabric that is the fiber assembly 1 is obtained by collecting continuous fibers melted by an extruder and extruded from a spinning nozzle on a conveyor, and forming the conveyor into a sheet form at an arbitrary speed.
- a continuous long-fiber non-woven fabric that can be wound around the raw fabric roller is obtained. Since a continuous sheet-like fiber assembly 1 formed of continuous organic fibers 2 is obtained, it can be continuously wound in a coil shape on a cylindrical raw fabric roller, and a raw fabric roll of a long-fiber nonwoven fabric is obtained. Is possible.
- the resin In spinning, after the resin is cooled with cold air directly under the nozzle, it is fiberized by drawing with compressed air or the like, or by blowing with high-temperature air equivalent to the melting temperature of the resin from the nozzle hole side. Can be used.
- the fiber assembly 1 obtained by the above method may have poor handling properties when the vacuum heat insulating material 7 is manufactured because the organic fibers 2 are separated from each other. Therefore, the organic fibers 2 may be heated and welded together during pressurization. At this time, excessive pressurization and heat welding increase the contact area between the organic fibers 2 and increase heat transfer, causing heat conduction from the welded portion and causing a decrease in heat insulation performance. Therefore, it is better to reduce the contact area between the organic fibers 2 as much as possible.
- the contact area between the organic fibers 2 is desirably 20% or less, preferably 15% or less, and more preferably 8% or less of the total area (sheet area).
- the thermal conductivity increases when the proportion of heating welding exceeds 20% of the total area (sheet area), and the heat insulation performance deteriorates, so the proportion of heating welding accounts for the total area (sheet area). Is preferably 20% or less.
- the proportion occupied by heat welding with respect to the total area (sheet area) is reduced, the heat insulation performance is remarkably improved, so the proportion occupied by heat welding is 15% or less of the total area (sheet area), It is desirable to suppress it to 8% or less of the total area (sheet area).
- Heat welding is performed by, for example, embossing 110 for attaching a dot-like welded portion with a heat roller or the like to obtain a long fiber nonwoven fabric (fiber assembly 1) that can be wound while ensuring handling strength and has good heat insulation performance. It is done.
- the temperature of the heat roller may be about 195 ° C.
- the fiber diameter of the organic fiber assembly is adjusted to about 15 ⁇ m by adjusting the diameter of the nozzle for molding the organic fiber assembly. In terms of heat insulation performance, the thinner fiber diameter is better.
- the fiber diameter is preferably smaller from the relationship between the degree of internal vacuum of the vacuum heat insulating material 7, the spatial distance subdivided by the fiber, and the free path distance of gas molecules.
- the fiber diameter is desirably 15 ⁇ m or less, preferably 10 ⁇ m or less, and an average fiber diameter of about 9 ⁇ m may be used.
- the average fiber diameter may be measured by measuring several to several tens (for example, ten) using a microscope and using the average value.
- the weight per unit area (fiber weight per 1 m 2 (g)) may be obtained as a weight per unit area of one sheet by measuring the area and weight of one sheet.
- the fiber orientation direction is arranged in a direction substantially perpendicular to the thickness direction, which is a heat insulating direction, and a multilayer structure in which a plurality of fiber assemblies 1 are stacked.
- a short fiber nonwoven fabric is used for the fiber assembly 1, since the fiber length is short, the organic fibers 2x and the organic fibers 2y are easily oriented in the heat insulating direction (sheet thickness direction).
- a long fiber non-woven fabric using long fibers for example, a long fiber non-woven fabric having a length greater than or equal to the width of the sheet is used.
- the fiber is cut in the middle of the sheet, and a part of the fiber (the middle) and the end are in the direction of heat insulation. Therefore, the heat insulation performance is not deteriorated.
- the end surface 1a of the obtained sheet-like fiber assembly 1 is cut (cut) so as to have an A4 size (width 210 mm ⁇ length 297 mm) which is a predetermined size, for example.
- These are laminated in a plurality of layers (for example, 25 layers) to form the core material 5 having a predetermined size and thickness in which the end face 5a is cut.
- the core material 5 may be formed in a predetermined size by cutting the end face 5a after laminating a plurality of sheet-like fiber assemblies 1.
- Outer packaging material A laminate film having a thickness of 5 ⁇ m or more and 100 ⁇ m or less is used for the outer packaging material 4 (FIG. 4) of the vacuum heat insulating material 7.
- a plastic laminate film having a gas barrier property composed of nylon (6 ⁇ m), aluminum-deposited PET (polyethylene terephthalate) (10 ⁇ m), aluminum foil (6 ⁇ m), and high-density polyethylene (50 ⁇ m) is used. ing.
- a laminated film that does not contain aluminum foil such as polypropylene, polyvinyl alcohol, or polypropylene is used for the outer packaging material 4 of the vacuum heat insulating material 7, it is possible to suppress a decrease in heat insulating performance due to heat bridge.
- three sides of the four sides of the outer packaging material 4 are heat sealed by a seal wrapping machine. The remaining side is heat sealed after inserting the core material 5.
- the vacuum heat insulating material 7 is manufactured by first inserting a core material 5 having a predetermined size and thickness into a bag-shaped outer packaging material 4 having an opening 4a, and fixing the opening 4a so as not to be closed. And dried at a temperature of about 105 ° C. for half a day (about 12 hours).
- an adsorbent 6 gas adsorbent, moisture adsorbent, etc.
- adsorbent 6 for adsorbing residual gas after vacuum packaging, outgas from the core material 5 released over time, and permeate gas entering through the sealing layer of the outer packaging material 4
- NPC Kashiwagi vacuum packaging machine
- the evacuation was performed until the degree of vacuum in the chamber reached about 1 to 10 Pa, and the opening 4a of the film bag (outer packaging material) 4 was heat sealed in the chamber to obtain a plate-like vacuum heat insulating material 7.
- the sheet-like fiber assembly 1 may be cut into a predetermined size, and a plurality of sheets may be laminated to form the core material 5 to produce the vacuum heat insulating material 7, or the sheet-like fiber assembly 1
- the end surface 5a is cut after forming a plurality of layers 1 and formed into a predetermined size to form the core material 5, the vacuum heat insulating material 7 may be manufactured.
- another method for manufacturing the core material 5 is used. Will be described. A method of manufacturing the core material 5 by continuously winding the continuous sheet-like fiber assembly 1J (for example, organic fiber assembly) into a coil shape will be described.
- FIG. 5 and 6 are diagrams showing the first embodiment.
- FIG. 5 is a perspective view schematically showing a laminated state of the core material 5 forming the vacuum heat insulating material 7.
- FIG. 6 is a core forming the vacuum heat insulating material 7.
- FIG. 6 is a perspective view schematically showing a raw fabric roller and a winding frame of a stacking apparatus for materials 5.
- a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly having a thickness of about 30 ⁇ m or more and about 500 ⁇ m or less, preferably 80 ⁇ m or more formed of continuous fibers (for example, organic fibers 2). 300 [mu] m or less) is wound in the form of a coil with a predetermined tension so that it does not lack the necessary properties as a fiber even if it is cut in the middle of winding or is not cut.
- the core material 5 is manufactured by being formed into a flat plate shape. That is, the core material 5 has a laminated structure of fiber assemblies in which sheet-like fiber assemblies 1J continuous in the length direction (winding direction) are continuously wound from the inside toward the outside.
- the core material 5 is formed in a coil shape by continuously forming a sheet-like fiber assembly 1J having a predetermined width wound in a coil shape on a substantially cylindrical raw fabric roller 1301 and continuing in the length direction on a winding frame 1311.
- the winding frame 1311 is wound in the axial direction of the winding frame 1311 (axial direction of the rotating shaft 1315 shifted by about 90 degrees with respect to the winding direction) in a state of being wound a plurality of times (a state where the winding is continuously wound a predetermined number of times).
- the continuous sheet-like fiber assembly 1J that has been extracted and wound into a substantially cylindrical shape is molded so as to be flattened (sheet-like).
- the flat core material 5 includes a flat plate portion 5g (smooth portion) in which a plurality of continuous sheet-like fiber assemblies 1J are laminated to form a flat plate shape (smooth shape), and both sides of the flat plate portion 5g with respect to the length direction.
- End portion (Since the continuous sheet-like fiber assembly 1J is wound in a continuous state in the winding direction, the continuous sheet-like fiber assembly 1J is bent and wound at both ends of the flat plate-like winding direction.
- the sheet-like fiber assembly 1J that is continuous is formed into a flat plate shape (sheet shape, smooth shape) having a bent end portion 5f formed in a bent state.
- the end surface 1a in the width direction of the original fabric roller 1301 is usually cut to a predetermined width.
- the core material 5 is formed into a flat plate shape, and the number of times R is wound around the winding frame 1311 so as to have a predetermined thickness t in a state of being sealed in a substantially vacuum state in the outer packaging material 4 is determined.
- the required thickness of the core material 5 predetermined thickness of the core material 5
- t is 8 mm
- the thickness of one continuous sheet-like fiber assembly 1J is 80 ⁇ m
- the required number of laminated sheets is Since it is 100 sheets (8 mm / 80 ⁇ m)
- the required number of windings R that must be wound around the winding frame 1311 is 50 times corresponding to 50 sheets of the continuous sheet-like fiber assembly 1J.
- the thickness t of the core material 5 is formed into a flat plate shape (sheet shape) by crushing the core material 5 in a state where the winding frame 1311 is extracted (cylindrical shape, coil shape).
- the core material 5 has a thickness of 100 sheets corresponding to twice the number of times R, which is 50 times, and the core material 5 is laminated with a plurality of continuous sheet-like fiber assemblies 1J (100 sheets being a predetermined number). It will be in the state.
- the core material 5 is wound into a sheet-like fiber aggregate 1J from the original fabric roller 1301 by a predetermined number R for obtaining a predetermined thickness t on the winding frame 1311 in a state of being formed into a flat plate shape.
- the remaining continuous sheet-like fiber assembly 1J which becomes unnecessary on the raw fabric roller 1301 side is cut at the winding end 1Je. That is, since the continuous sheet-like fiber assembly 1J is cut in the middle of the original fabric roller 1301 and the winding frame 1311, the cut end portion of the continuous sheet-like fiber assembly 1J on the winding frame 1311 side is the winding end end.
- Part 1Je (cut end).
- the continuous sheet-like fiber assembly 1J is cut so that the winding end portion 1Je is in the vicinity of the bent end portion 5f. Since the winding end portion 1Je of the continuous sheet-like fiber assembly 1J is arranged in the vicinity of the bent end portion 5f of the core material 5, the winding end portion 1Je is formed on the flat plate portion 5g of the core material 5. Since it is not positioned, there is no step in the flat plate portion 5g.
- the flat plate portion 5g plane portion, smooth portion
- the flat plate portion 5g can be easily adhered and fixed to a place where the vacuum heat insulating material 7 such as a product is attached, the vacuum heat insulating material 7 does not rattle and come off, and the vacuum heat insulating material 7 can be removed from the product. The effect that it is hard to come off easily is acquired.
- the flat plate portion 5g (planar portion, smooth portion) of the vacuum heat insulating material 7 is used. Since there is no step, the step does not obstruct the flow of urethane when urethane flows into the heat insulation box. Accordingly, it is possible to suppress a decrease in heat insulation performance due to insufficient flow of urethane.
- the continuous sheet-shaped fiber assembly among the two bent end portions 5 f in the length direction (the length direction of the continuous sheet-shaped fiber assembly 1 ⁇ / b> J).
- the 1J winding end 1Je is inserted from the bent end 5fa which is not caught by the opening 4a of the outer packaging material.
- it may be inserted from the bent end portion 5fa side on the upstream side in the winding direction (opposite side in the winding direction) of the continuous sheet-like fiber assembly 1J with respect to the winding end portion 1Je.
- the core material 5 when the core material 5 is inserted from the opening 4a of the outer packaging material 4, the core material 5 does not get caught in the opening, so that the core material 5 can be smoothly inserted into the outer packaging material 4 and the insertability is improved. It can improve significantly and can manufacture the vacuum heat insulating material 7 in a short time.
- the required width L (predetermined width) of the core material 5 is appropriately adjusted according to the width of the continuous sheet-like fiber assembly 1J wound around the original fabric roller 1301 and the width of the winding frame 1311.
- the width of the winding frame 1311 is about 1500 mm which is the predetermined width or slightly larger than the predetermined width of 1500 mm (for example, 1520 mm). It is also possible to cut the excess part (both width parts) by setting the degree.
- FIG. 7 and 8 are diagrams showing the first embodiment.
- FIG. 7 is a diagram showing a structure of a winding frame of the vacuum heat insulating material manufacturing apparatus.
- FIG. 7A is a winding when the organic fiber assembly is wound up.
- FIG. 7 (b) shows the state of the reel when the reel is removed (removed) from the continuous sheet-like fiber assembly 1J after the winding of the continuous sheet-like fiber assembly 1J is completed.
- FIGS. 8A and 8B are diagrams showing a clamp member that clamps the organic fiber assembly wound on the winding frame of the vacuum heat insulating material manufacturing apparatus.
- the winding frame 1311 has, for example, a substantially cylindrical shape, and is divided into a plurality of parts (for example, four parts (circumferential members 1312a to 1312d)) by, for example, a plurality of circumferential members 1312 in the circumferential direction.
- the circumferential member 1312 has a circumferential member holding shaft 1316 (connected to the rotating shaft 1315 of the winding frame 1311 on the inner peripheral side in the vicinity of the center in the circumferential direction of each of the divided circumferential members 1312a to 1312d.
- Each of the circumferential member holding shafts 1316a to 1316d) is provided, and a plurality of circumferential members 1312 are connected and held to the rotating shaft 1315 of the winding frame 1311 via the circumferential member holding shaft 1316.
- a drive shaft driven by an electric motor or the like is inserted and connected to the rotation shaft 1315 of the winding frame 1311.
- At least one of the circumferential members 1312 (four circumferential members 1312a to 1312d in this embodiment) divided into a plurality (in this embodiment, two circumferentially opposed circumferential members).
- the members 1312a and 1312b) are provided with circumferential member holding shafts 1316 (in this embodiment, circumferential member holding shafts 1316a and 1316b) that can be expanded and contracted and moved in the radial direction.
- 1J is wound around the winding frame 1311, and then the circumferential member holding shafts 1316a and 1316b are moved in a contracting direction toward the center in the radial direction, whereby the winding frame 1311 is wound in a substantially cylindrical shape (coil shape) with a predetermined tension.
- the continuous sheet-like fiber assembly 1J that is attached can be relaxed, and the continuous sheet-like fiber wound around the winding frame 1311 in a substantially cylindrical shape. It can be withdrawn aggregates 1J in the axial direction of the rotary shaft 1315. That is, the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is released from the reel 1311 by loosening the tension of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension. Since it becomes easy to extract, it can extract easily, without damaging the continuous sheet-like fiber assembly 1J.
- the winding frame 1311 is provided with a clamp member 1320 for holding or fixing the substantially cylindrical fiber assembly 1 after extracting the winding frame 1311 at least at one place.
- the clamp member 1320 is attached to the clamp member installation portions 1313c and 1313d provided on the circumferential members 1312c and 1312d, or the circumferential member holding shafts 1316c and 1316d, respectively. Removably provided. Further, the two clamp member installation portions 1313c and 1313d are different from the circumferential member holding shaft (in this embodiment, the circumferential member holding shafts 1316a and 1316b) that can be expanded and contracted in the radial direction (for example, different circles).
- the peripheral member holding shafts 1316c and 1316d) are provided.
- This clamp member 1320 is an inner peripheral side of a substantially cylindrical continuous sheet-like fiber assembly 1J in a state in which the sheet-like fiber assembly 1J continuous on the winding frame 1311 is wound in a substantially cylindrical shape (coil shape). And the outer peripheral side of the winding frame 1311 are provided so that the continuous sheet-like fiber assembly 1J can be held or fixed (pinched and held or fixed).
- the clamp member 1320 may be provided on the reel 1311 side so as to be detachable from the reel 1311 before the continuous sheet-like fiber assembly 1J is wound, for example, in the form of a rod or plate.
- Two clamp member installation portions 1313 are inserted from the axial direction of the rotary shaft 1315.
- the continuous sheet-like fiber assembly 1J may be provided and held, or the continuous sheet-like fiber assembly 1J may be held at two clamping member installation portions (for example, Ramp member installation portion 1313 c, may be held by sandwiching the two places in 1313 d).
- the rotation of the winding frame 1311 is performed on the outer peripheral surface side of the circumferential member (for example, circumferential members 1312c and 1312d that are not movable in the radial direction) provided with the clamp member 1320.
- Clamp member installation portion 1313 in which a clamp member can be stored or inserted in the axial direction of shaft 1315 for example, a recess or a notch provided to have a predetermined width (or length) in the direction of rotating shaft 1315, for example) Is provided.
- the clamp member 1320 accommodated or inserted in the clamp member installation portion 1313 (for example, the clamp member installation portions 1313c and 1313d) is, for example, a rod shape or a plate shape, and the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311.
- the circumferential member 1312a, 1312b is provided in the clamp member installation portion 1313 (clamp member installation portion 1313c, 1313d) and wound around the circumferential member 1312a, 1312b in the radial direction after winding the continuous sheet-like fiber assembly 1J onto the winding frame 1311.
- the continuous sheet-like fiber assembly 1J is clamped by releasing the tension of the substantially cylindrical continuous sheet-like fiber assembly 1J that is moved in the central direction (shrinking direction) and wound around the winding frame 1311 with a predetermined tension. 1320 (in this embodiment, at least two places (clamp member installation portion 1313c 1313 d) may be as withdrawn from the reel 1311 from the clamp) in.
- the inner peripheral side of the continuous sheet-like fiber assembly 1J and the winding frame 1311 Rotation of the winding frame 1311 in a recess or notch of a clamp member installation portion 1313 (clamp member installation portions 1313c, 1313d) provided on the circumferential members 1312c, 1312d that are not movable of the winding frame 1311 located between the outer periphery side and the outer periphery side.
- At least one clamp member 1320 is inserted from the axial direction of the shaft 1315 to clamp the substantially cylindrical continuous sheet-like fiber assembly 1J (in this embodiment, at least two locations (clamp member installation portions 1313c and 1313d) And then the circumferential members 1312a and 1312b are moved in the radial center direction (the direction of contraction) to form the reel 131. It may be pulled out reel 1311 by loosening the tension of the substantially cylindrical continuous sheet-shaped fiber assembly 1J wound with a predetermined tension.
- At least one clamp member 1320 (in this embodiment, two clamp members 1320 and 1320d) is detachably attached to the reel 1311, and at least one circumference of the reel 1311 is not movable.
- the member in this embodiment, two circumferential members 1312c and 1312d) are provided.
- the substantially cylindrical continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension is provided.
- the tension can be easily released. Therefore, since the continuous sheet-like fiber assembly 1J can be easily detached from the winding frame 1311 without damaging or damaging the continuous sheet-like fiber assembly 1J or the organic fiber 2, the structure is simple and highly reliable.
- a winding device can be obtained, and a continuous sheet-like fiber assembly 1J and a vacuum heat insulating material 7 can be obtained at low cost and with high reliability.
- the position where the continuous sheet-like fiber assembly 1J is clamped is substantially equal to the circumferential length of the circumferential direction of the cross-sectional circle of the continuous sheet-like fiber assembly 1J wound in a substantially cylindrical shape.
- a cross-sectional shape when considering a cross section substantially perpendicular to the axial direction of the rotation shaft 1315 of the winding frame 1311 (in the case of a substantially cylindrical shape, the cross-sectional shape is substantially circular
- the straight line passing through the center of rotation of the rotating shaft 1315 of the winding frame 1311 has a cross-sectional shape (two cross-sectional shapes (two external points that intersect the circumference in the case of a circle)).
- the clamping positions are two positions that divide the circumferential length of the outer shape of a substantially cylindrical cross section (circular in the case of a substantially cylindrical shape) into approximately two equal parts, the two clamp members 1320 (clamp members 1320c, 1320d) is removed from the winding frame 1311 while the continuous sheet-like fiber assembly 1J is clamped, and the two clamp members 1320c, 1320d are movable in a substantially linear direction opposite direction (approximately 180 degrees opposite direction) or Since the continuous sheet-like fiber assembly 1J that is wound a plurality of times by being moved and is stacked in multiple layers is pulled in the opposite direction by the two clamp members 1320c and 1320d, the portion clamped by the clamp members 1320c and 1320d The continuous sheet-like fiber assembly 1J is formed into a bent flat plate shape.
- the continuous sheet-like fiber assembly 1J is continuously extracted by being extracted from the continuous sheet-like fiber assembly 1J formed in a flat plate shape in a state where a plurality of layers of the clamp members 1320 (clamp members 1320c and 1320d) are stacked.
- a flat core material 5 having a predetermined width L and length H having a flat plate (sheet) -like flat plate portion 5g bent at the bent end portion 5f is formed.
- FIG. 9 is a diagram illustrating a method for manufacturing a vacuum heat insulating material.
- FIGS. 9A to 9I show the steps of manufacturing the vacuum heat insulating material 7.
- FIG. 9A shows a winding start step in which a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly manufactured with continuous organic fibers 2 or a nonwoven fabric sheet) is started to be wound around the winding frame 1311.
- a continuous sheet-like fiber assembly 1J is formed by winding a plurality of times in a coil shape and cut into a predetermined width, and a continuous sheet-like fiber wound around the original fabric roller 1301 in a coil shape
- the sheet-like fiber assembly 1J starts to be wound around the winding frame 1311. This process is a winding start step.
- FIG. 9B shows a winding end step in which the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 a predetermined number of times R (substantially cylindrical or coiled) and winding is completed.
- the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 from the original fabric roller 1301, and at this time, it is wound around the winding frame 1311 of the continuous sheet-like fiber assembly 1J.
- the thickness a corresponds to a thickness t / 2 that is half of the required predetermined thickness t of the core material 5, when wound a predetermined number of times R corresponding to the predetermined thickness a, The rotation of the roller 1301 and the winding frame 1311 is stopped, and the winding of the continuous sheet-like fiber assembly 1J is completed. This process is a winding end step.
- FIG. 9C shows a cutting step of cutting a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly).
- the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311.
- the number of windings R corresponds to a thickness t / 2 that is half of the required predetermined thickness t of the core material 5.
- the cutting step is a step of cutting the continuous sheet-like fiber assembly 1J at a predetermined location, and the continuous sheet-like fiber assembly In this step, 1J is cut at a predetermined cutting position between the original fabric roller 1301 and the winding frame 1311 in a state where the front and rear of the predetermined cutting position are clamped, and the original fabric roller 1301 is separated from the winding frame 1311.
- the substantially cylindrical (or coiled) continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is clamped and held by a clamp member 1320 (clamp members 1320c and 1320d).
- the cut end surface (winding end portion 1Je) of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is not scattered, or the cutting end surface (winding end portion 1Je) is not scattered.
- the core material 5 is molded, as shown in FIG. 5, the continuous sheet-like fiber assembly 1J is disposed at the bent end portion 5f (that is, not positioned at the flat plate portion 5g). It is desirable to cut at a position after the position to be clamped at (for example, immediately after the position to be clamped).
- FIG. 9D shows a core material fixing step in which a substantially cylindrical (or coiled) continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly) is clamped by a clamp member 1320.
- a clamp member 1320 is placed on a clamp member installation portion 1313 (clamp member installation portions 1313c, 1313d, etc.) such as a recess or a notch provided in the winding frame 1311. Is inserted, and the vicinity of the winding end 1Je is clamped so that the winding end 1Je of the continuous sheet-like fiber assembly 1J is not scattered or peeled off.
- FIG. 9E shows a winding frame 1311 in which at least one circumferential member 1312a, 1312b is movable and deformed in the radial center direction among the plurality of circumferential members 1312a to 1312d provided in the circumferential direction of the winding frame 1311.
- transformation step which loosens the winding tension
- the vicinity of the winding end portion 1Je (cut end surface) is clamped.
- the continuous sheet-like fiber assembly 1J has a predetermined thickness (t / t) on the winding frame 1311.
- At least one circumferential member (in this embodiment, two circumferential members 1312a and 1312b that face each other in the radial direction) is movable in a direction of contraction toward the radial center of the winding frame 1311.
- the circumferential member holding shafts 1316a and 1316b move in the direction of contraction toward the center in the radial direction after the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 so that the circumferential members 1312a and 1312b also have a radius. It moves in a direction that shrinks toward the center of the direction.
- the circumferential members 1312a and 1312b move in the direction of contraction toward the center in the radial direction, whereby the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension in a substantially cylindrical shape. Since the tension is loosened, the continuous sheet-like fiber assembly 1J wound in a substantially cylindrical shape from the winding frame 1311 can be easily extracted. (The continuous sheet-like fiber assembly 1J clamped from the axial direction of the rotating shaft 1315 of the winding frame 1311 can be easily pulled out.) That is, the continuous winding around the winding frame 1311 with a predetermined tension. By loosening the tension of the sheet-like fiber assembly 1J (for example, organic fiber assembly), the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 can be easily extracted from the winding frame 1311.
- the tension of the sheet-like fiber assembly 1J for example, organic fiber assembly
- FIG. 9 (f) shows that the winding frame 1311 is extracted from the continuous sheet-like fiber assembly 1 ⁇ / b> J wound around the winding frame 1311, and the substantially cylindrical (or coil-like) continuous sheet-like fiber assembly 1 ⁇ / b> J is wound around the winding frame.
- This is a reel separation step for separating.
- At least one circumferential member 1312a, 1312b of the winding frame 1311 is moved and deformed toward the center in the radial direction in the winding frame deformation step, and the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is wound.
- the substantially cylindrical continuous sheet-like fiber assembly 1J with the loosened tension is extracted from the winding frame 1311 in the axial direction of the rotary shaft 1315.
- the winding frame 1311 may be extracted while being clamped from the substantially cylindrical continuous sheet-like fiber assembly 1J.
- FIG. 9G shows a substantially cylindrical (or coiled) continuous sheet-like fiber assembly 1J separated from the winding frame 1311 in a substantially opposite direction with clamp members 1320 (clamp members 1320c and 1320d) as molding members.
- clamp members 1320 clamp members 1320c and 1320d
- This is a core material forming step of forming the flat core material 5 by pulling in the reverse direction.
- the continuous sheet-like fiber assembly 1J is separated from the winding frame 1311 while being clamped by the clamp member 1320, which is a molded member. Pulling the substantially cylindrical continuous sheet-like fiber assembly 1J extracted in a state of being clamped by the clamp members 1320c and 1320d, the two clamp members 1320c and 1320d to the opposite sides in the substantially linear direction, respectively.
- the core material 5 is molded.
- the core material 5 composed of the continuous sheet-like fiber assembly 1J molded into a flat plate shape by the clamp member 1320, which is a molded member, is a state in which the bent end portion 5f (folding portion) is clamped by the two clamp members 1320. Then, the clamp member 1320 is removed and the core material 5 is formed. That is, a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly) formed from continuous fibers (for example, organic fibers 2) is continuously wound from the inside toward the outside to form a flat core material 5. Formed, manufactured and moved on conveyor 1400.
- FIG. 9H shows that the core material 5 molded on the conveyor 1400 is substantially sealed in a state where the inside is decompressed after being inserted into the gas barrier outer packaging material 4 having the opening 4a having one end opened.
- It is a vacuum heat insulating material manufacturing step for manufacturing the vacuum heat insulating material 7.
- a core material 5 formed by laminating a plurality of continuous sheet-like fiber assemblies 1J and continuously winding from the inside toward the outside to form a flat plate has a gas barrier property having an opening 4a having at least one end opened.
- the vacuum heat insulating material 7 is completed by being inserted into the outer packaging material 4, transported in a vacuum furnace, and heat-sealing the sealing portion (for example, the opening 4 a) of the outer packaging material 4 in a substantially vacuum state.
- the circumferential member 1312 of the winding frame 1311 has a cylindrical shape (coil shape) substantially continuous in the winding direction (circumferential direction)
- the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311.
- the tension generated by winding is substantially uniform in the winding direction (circumferential direction), and the continuous sheet-like fiber assembly 1J is not damaged or cut during winding, and the highly reliable core 5
- the vacuum heat insulating material 7 is obtained.
- the portion 1Je is inserted from the bent end portion 5fa that is not caught by the opening 4a of the outer packaging material.
- it may be inserted from the bent end portion 5fa side on the upstream side in the winding direction (opposite side in the winding direction) of the continuous sheet-like fiber assembly 1J with respect to the position of the winding end portion 1Je. That is, in the present embodiment, the core material 5 having a predetermined width and formed into a flat plate shape by winding the sheet-like fiber assembly 1J continuous in the length direction from the inside to the outside is used as the core material.
- Outer packaging material having gas barrier properties from the bent end portion 5fa on the upstream side in the winding direction with respect to the winding end portion 1Je position of the continuous sheet-like fiber assembly 1J among the two bent end portions 5f in the lengthwise direction of 5 A core material insertion step for inserting the core material 5 into the outer packaging material 4 from the opening portion 4a of the four, and an outer packaging material sealing step for sealing the opening portion 4a by depressurizing the inside of the outer packaging material 4 with the core material 5 inserted therein. ing.
- the winding end 1 Je is not scattered and does not get caught in the opening 4 a, so that the core material 5 smoothly covers the outer packaging material 4.
- the vacuum heat insulating material 7 can be manufactured in a short time. Further, since it is not necessary to fix the core end 5 with an adhesive or the like so that the winding end 1Je is not peeled off or separated, the cost can be reduced.
- the circumferential member 1312 is used in which the winding direction (circumferential direction) is substantially continuous with the winding frame 1311 to form a substantially cylindrical shape (coiled shape).
- An octagonal shape, a hexagonal shape, a flat plate shape, etc.) may be used.
- FIG. 10 shows the first embodiment and is a schematic diagram of another reel. 10, (a) is a diagram showing an example of an octagonal reel, and (b) is a continuous sheet-like fiber assembly 1J (for example, fiber aggregate 1) wound around the octagonal reel. It is a figure showing a state. As shown in the drawing, the circumferential member 1312 may not be continuous in the winding direction (circumferential direction).
- a winding frame 1311 is provided with eight rod-like (eg, prismatic and cylindrical) circumferential members 1312 provided approximately evenly in the circumferential direction, and continues from the original fabric roller 1301 by rotating around a rotating shaft 1315.
- the sheet-like fiber assembly 1J is wound up.
- a plurality of (for example, eight) circumferential members 1312 are not continuous in the winding direction, a plurality of prismatic or cylindrical shapes arranged at substantially equal intervals in the winding direction are used. It is possible to clamp the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 by inserting the clamping member 1320 into the space between the circumferential members 1312 (between the circumferential members 1312 and 1312). Therefore, the clamp member installation portion 1313 is not necessary, and the reel 1311 having a simple structure, light weight, and low cost can be obtained.
- an original of a long-fiber nonwoven fabric obtained by continuously winding a continuous sheet-like fiber assembly 1J formed of continuous organic fibers 2 around a substantially cylindrical (coiled) raw fabric roller.
- the anti-roller 1301 and the original fabric roller 1301 are provided separately, and have a predetermined width for winding the continuous sheet-like fiber assembly 1J of the long-fiber nonwoven fabric of the original fabric roller 1301 (for example, in a substantially cylindrical shape or a coil shape).
- a reel 1311 A continuous sheet-like fiber aggregate 1J (for example, an organic fiber aggregate) wound around the roll 1311 on the original fabric roller 1301 is transferred a predetermined number of times R (a thickness t that is half the required predetermined thickness t of the core material 5).
- the sheet-like fiber assembly 1J continuous by the required predetermined thickness t of the core material 5 is laminated by winding it by an amount equivalent to / 2, it was cut to a predetermined size (width and length). There is no need to laminate the nonwoven fabric sheets (fiber assemblies 1) one by one, and the core material 5 can be easily produced at low cost with inexpensive production equipment.
- the core material 5 is a flat sheet shape in which a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly) formed from continuous fibers (for example, organic fibers 2) is continuously wound from the inside toward the outside. Since the end portion in the length direction (bending end portion 5f) of the four end surfaces of the substantially rectangular and flat core member 5 is formed by folding (folding) a continuous sheet, The two end faces in the length direction (folded end portion 5f) that have been bent (folded) are not chamfered, so that the organic fiber 2 does not protrude from the bent end portion 5f, and the end face is also protruding. There is no need to cut the end face.
- a continuous sheet-like fiber assembly 1J for example, an organic fiber assembly formed from continuous fibers (for example, organic fibers 2) is continuously wound from the inside toward the outside. Since the end portion in the length direction (bending end portion 5f) of the four end surfaces of the substantially rectangular and flat core member 5 is formed by folding (folding) a continuous sheet, The
- the number of parts (parts) to be cut is reduced, and the core material 5 and the vacuum heat insulating material 7 that can be easily processed at low cost can be obtained.
- two end surfaces in the width direction of the four end surfaces of the substantially rectangular and flat core member 5 are the width of the core member 5.
- the two end surfaces in the width direction of the core material 5 are also cut to a predetermined width in advance when the raw material roller 1301 is used, and are cut after being formed on the core material 5.
- the production line for the core material 5 is simplified, and the core material 5 and the vacuum heat insulating material 7 are obtained at low cost.
- both end portions (bent portions 5f) in the length direction of the fiber assembly 1 are continuously connected to the flat plate portion 5g.
- the rigidity strength (particularly the bending strength) of the core material 5 and the vacuum heat insulating material 7 is increased as compared to the case where both end portions and the flat plate portion are not connected as in the case where fiber assemblies are laminated one by one. Therefore, when constructing a heat insulating box such as a refrigerator, rigidity can be obtained with only vacuum insulation, so strength (bending rigidity) can be obtained without using urethane foam, etc., so is urethane unnecessary? Equipment such as a heat insulation box or a refrigerator that can be made small and thin at low cost can be obtained.
- the organic fiber 2 does not protrude from the end face or the end face is not protruded, it is not necessary to cut the end face. It does not spill out and impair the sealing performance of the sealing portion of the outer packaging material 4.
- FIG. 11 is a diagram showing the first embodiment, and is a schematic diagram showing the shape of the vacuum heat insulating material.
- FIG. 11 (a) is a cross section in the length direction of the vacuum heat insulating materials 7, 750, and 760 (a cross section perpendicular to the width direction).
- 11 (b) is a front view of the main part of the end portions in the length direction of the vacuum heat insulating materials 7, 750 and 760 as viewed from the direction perpendicular to the length direction.
- the cross-sectional shape perpendicular to the width direction at the end in the length direction of the core 5 (the bent end 5f that is both ends in the length direction) is a substantially triangular shape that gradually decreases in thickness toward the outside in the length direction. A vacuum insulation is obtained.
- FIGS. 12 to 15 are diagrams showing the first embodiment.
- FIG. 12 is a diagram showing a configuration of a combined original fabric roll having a large width by combining a plurality of original fabric rolls.
- FIG. FIG. 14 is a schematic view of a winding device in the case of winding on a reel, and FIG. 14 is wound up by a winding device using two combined original rolls (upper original roll and lower original roll).
- FIG. 15 is a schematic view showing the configuration of the organic fiber assembly, and FIG. 15 is a cross-sectional view of the core material wound up by a winding device using two combined original fabric rolls.
- a plurality of substantially cylindrical (or coil-shaped) original fabric rolls for example, a main body portion A1301a, a main body portion B1301b, a main body portion C1301c, and a main body portion D1301d
- a first raw roll 1305 having a predetermined width is combined in such a manner that it is adjacent in the width direction (lateral direction) (it is desirable to arrange without gaps, but a predetermined gap may be provided as described later).
- a plurality of original fabric rolls (for example, a main body portion E1301e, a main body portion F1301f, a main body portion G1301g, and a main body portion E1301e,
- the main body H1301h) is adjacent in the width direction (lateral direction) (desirably arranged without a gap, but a predetermined gap may be provided).
- the combination forms a second original fabric roll 1306 (lower roll) having a predetermined width.
- the plurality of substantially cylindrical (or coiled) raw fabric rolls may have the same width or different widths.
- a plurality of original fabric rolls may have the same width or different widths, and are used for the first original fabric roll 1305.
- the number of the plurality of original fabric rolls and the number of the plurality of original fabric rolls used for the second original fabric roll 1306 may be the same or different.
- the first original roll 1305 and the second original roll 1306 are arranged in the width direction so that a plurality of original rolls (for example, a plurality of main parts) are adjacent to each other.
- a gap (a minute gap, a predetermined gap) between the body parts (for example, the main body part A 1301a and the main body part B 1301b), and the adjacent main body parts are not continuous.
- At least one of the first original fabric roll 1305 and the second original fabric roll 1306 is an original fabric roll (for example, disposed on the end side in the width direction of the plurality of original fabric rolls).
- the main part A1301a, the main part D1301d, the main part E1301e, the main part H1301h, etc.) use an ear part raw roll having an ear part that is not aligned with the ridge line generated when the raw roll material is cut to a predetermined width. ing.
- the number of the plurality of original fabric rolls used for the first original fabric roll 1305 (four main body portions A1301a, B1301b, main body portion C1301c, and main body portion D1301d) and the second original fabric roll.
- the number of the plurality of raw rolls used for the roller 306 (four main body parts E1301e, F1301f, G1301g, and H1301h) is the same.
- a plurality of original rolls used for the first original roll 1305 (a main part A 1301 a, a main part B 1301 b, a main part C 1301 c, a main part D 1301 d) and a plurality of original rolls used for the second original roll 1306.
- the anti-rolls (main body part E1301e, main body part F1301f, main body part G1301g, main body part H1301h) are arranged so as to be shifted by a predetermined amount Xb in the width direction.
- 1K and the fiber assembly 1H wound around the second raw fabric roll 1306 are overlapped in the vertical direction (substantially at right angles to the sheet surface) so that they are shifted by a predetermined amount Xb in the width direction of the sheet surface.
- the first original fabric roll 1305 and the second original fabric roll 1306 are moved in the moving direction (winding direction) of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H.
- the widths of the plurality of original fabric rolls of the second original fabric roll 1306 corresponding to the plurality of original fabric rolls of the first original fabric roll 1305 are made substantially equal and shifted by a predetermined amount Xb.
- the individual original rolls for example, the main body A1301a constituting the first original roll 1305 and the second original rolls disposed behind (or below) the first original roll 1305.
- the widths of the individual fabric rolls (for example, the main body E1301e) constituting 1306 are substantially equal.
- the individual rolls (the main body B1301b and the main body F1301f, the main body C1301c and the main body G1301g, and the main body D1301d and the main body H1301h are set to have substantially the same width. It is desirable that the predetermined width of 1305 (upper roll) and the predetermined width of the second original roll 1306 (lower roll) are substantially equal.
- positioning of the 1st original fabric roll 1305 (upper roll) and the 2nd original fabric roll 1306 (lower roll) of a core material manufacturing apparatus is 1st.
- the original roll 1305 (upper roll) is located behind (or on the upper side or obliquely upper side) with respect to the winding frame 1311 (the feeding direction of the fiber assembly 1) with respect to the second original roll 1306 (lower roll). It is arranged. That is, it is arranged in the order of the second original fabric roll 1306 (lower roll) and the first original fabric roll 1305 (upper roll) in the direction of the winding frame 1311.
- the first (organic) fiber assembly 1K wound around the first raw fabric roll 1305 (upper roll) is wound around the second original fabric roll 1306 (lower roll).
- the (organic) fiber assembly 1H is disposed on the upper side.
- the first (organic) fiber assembly 1K wound around the first original fabric roll 1305 (upper roll) is wound around the second original fabric roll 1306 (lower roll) because it is wound up by the winding frame 1311.
- the second (organic) fiber assembly 1H is wound in a substantially cylindrical shape (or coil shape), for example, in a state of being positioned radially outside the winding frame 1311.
- the first raw fabric roll is so formed that the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are wound around the winding frame 1311 in a state where they overlap each other. What is necessary is just to arrange
- the predetermined width required for the product is small (for example, about 100 mm or about 200 mm), the production of the raw roll is easy without requiring a place, but if the predetermined width required for the product is large (for example, 1100 mm or 2000 mm) makes it difficult to manufacture the raw roll.
- vacuum heat insulating materials 7 having different widths may be required.
- a single raw roll is to be used, the required number of raw rolls are required. Is difficult, and the number of original rolls increases and the cost increases. Therefore, in the present embodiment, a plurality of original fabric rolls are combined so as to be adjacent in the width direction and used as a combination roll (for example, a first original fabric roll 1305 and a second original fabric roll 1306).
- a plurality of original rolls having different widths are adjacent to each other in the width direction and have one large width. If used as a raw fabric roll (for example, the first original fabric roll 1305), the width of each original fabric roll can be reduced, so that the original fabric roll (for example, the main body A1301a or the main body B1301b).
- a large width raw roll is required, a plurality of small width raw rolls are combined to form a single large roll (for example, the first raw roll) 1305, the second original roll 1306, etc.) can be manufactured, the production location of the original roll can be selected, and the type of the original roll can be reduced.
- Large core material 5 of the freedom of design costs it is possible to obtain a vacuum heat insulating material 7.
- a plurality of original fabric rolls having different widths main body portion A1301a, main body portion B1301b) or the like, or a plurality of smaller original fabric rolls having substantially the same width (for example, one original fabric roll having the same width such as main body portion B1301b). It is good also as one large width original fabric roll combining.
- a first original fabric roll 1305 (a combined original fabric roll composed of a plurality of original fabric rolls (for example, a main body portion A 1301a, a main body portion B 1301b, a main body portion C 1301c, and a main body portion D 1301d)
- the first (organic) fiber assembly 1K wound around the upper roll) and a plurality of original fabric rolls for example, main body E1301e, main body F1301f, main body G1301g, main body H1301h
- a predetermined amount Xb (for example, about 5 mm to 40 mm) in the width direction (lateral direction) of the second (organic) fiber assembly 1H wound around the second original roll 1306 (lower roll) which is an original roll. This is preferably shifted by 10 mm to 20 mm for the following reason.
- connection part of A1301a and the main part B1301b, etc. actually has a slight gap, but even if it is in contact with no gap, the adjacent part has a slit part (for example, between the main part A and the main part B).
- the slit portion (connecting portion, adjacent portion) comes to a substantially equivalent position when a plurality of sheets are stacked without shifting by the predetermined amount Xb, so that the slit portion is divided. That is, since the slit portion (connecting portion, adjacent portion) is not continuous, it is broken or torn from the slit portion, so that the necessary bending strength as the core material 5 is obtained.
- the slit part (adjacent part) is not continuous and is not continuous, so it becomes separated from the outer packaging material 4 and the core material 5 having the required width cannot be obtained.
- the performance as the vacuum heat insulating material 7 cannot be obtained.
- the second original roll 1306 (lower roll) is wrapped by a predetermined amount Xb with respect to the first original roll 1305 (upper roll). Since the plurality of layers are laminated so as to be shifted, the slit part (adjacent part) is not separated or divided by friction of a part shifted by a predetermined amount Xb, and it is necessary to have necessary heat insulation performance.
- a core material 5 having a predetermined size can be obtained.
- the first original roll 1305 and the second original roll 1306 are shifted so as to wrap by a predetermined amount Xb at the adjacent portion, the first ( The (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are not continuous on the same plane. Therefore, it becomes easy to bend at the slit portion.
- the conventional vacuum heat insulating material special measures such as forming a groove for bending are performed, and the manufacturing cost is increased, but in this embodiment, the adjacent part (slit part) is in the manufacturing process. Since it is easy to bend, it is used effectively by arranging the part that has become easy to bend in the part that needs to be bent.
- a vacuum heat insulating material across wall surfaces bent at a predetermined angle (for example, approximately 90 degrees) such as a back wall and an upper surface wall. It is necessary and needs to be bent, so it requires large manufacturing equipment to manufacture the raw roll material, which limits the manufacturing location and makes it difficult to manufacture.
- a predetermined angle for example, approximately 90 degrees
- it was also difficult to cope with the vacuum heat insulating material 7 of the present embodiment it is possible to use a plurality of raw rolls adjacent to each other in the width direction as a single large roll. Since the slit part (adjacent part) should be placed in the part that needs to be folded, the width of the roll can be freely selected by combining the rolls with a small width.
- Both ends in the width direction of the raw roll material before cutting both ends in the width direction are called ears, and the fiber assembly 1 and the organic fibers 2 of the continuous sheet-like fiber assembly 1J are required. Since the thickness does not exist and the thickness varies, and the edges of the width direction end face are not aligned, so when using as a raw roll, the raw roll material should be cut at both sides with the required width in advance. Used as a raw roll. Therefore, the ear raw rolls obtained by cutting the ears at both side portions in the width direction from the raw roll material have been discarded in the past because the strength is weak and the end faces (ridge lines) are not aligned.
- the ear part fabric roll that has been discarded in the past (in this embodiment, for example, the main body part A1301a or the main body part D1301d corresponds) is used as the first raw material as shown in FIG. It is used for a raw roll (for example, a main body A1301a or a main body D1301d) used on both sides in the width direction among a plurality of original rolls constituting the roll 1305 and the second original roll 1306. Since the plurality of layers of the original roll 1305 and the second original roll 1306 are shifted by a predetermined amount Xb, the ear portion and the non-ear portion are alternately laminated so that the positions of the ear portions are shifted. Therefore, the ear part and the ear part are not laminated continuously. Therefore, the strength required for the core material 5 can be obtained even if the ear part roll is used.
- a raw roll for example, a main body A1301a or a main body D1301d
- the first material roll 1305 is disposed so that the main body A1301a, the main body B1301b, the main body C1301c, and the main body D1301d are adjacent to each other in the width direction in this order.
- the widths of the individual original rolls of the second original roll 1306 may be determined. That is, the widths of the main body A 1301a, the main body B 1301b, the main body C 1301c, and the main body D 1301d (the main body E 1301e, the main body F 1301f, the main body G 1301g, and the main body H 1301h) may be selected. At this time, the widths T1, T2, T3, and T4 may be the same or different.
- the widths of a plurality of original fabric rolls (for example, main body A1301a, main body B1301b, main body C1301c, main body D1301d, main body E1301e, main body F1301f, main body G1301g, main body H1301h) can be appropriately selected individually. Therefore, the degree of freedom in design increases, and low-cost core material 5, vacuum heat insulating material 7, and equipment such as a refrigerator can be obtained. Further, since the core material 5 is manufactured by shifting the first original roll 1305 and the second original roll 1306 by a predetermined amount Xb and winding them around the winding frame 1311, it is easy to bend at the slit portion and can be bent.
- the heat insulating material 7 can be easily manufactured without requiring special processing or the like, and can be easily installed on a heat insulating wall of a device such as a refrigerator having a heat insulating wall surface bent at a predetermined angle. It is possible to increase the coverage of the vacuum heat insulating material 7 and equipment with high performance and low cost.
- a continuous sheet-like fiber assembly 1J (first (organic) fiber assembly 1K, second (organic) fiber assembly 1H) is placed on a reel 1311 (for example, substantially cylindrical or When wound up (in the form of a coil), the first (organic) fiber assembly 1K (upper organic fiber assembly, first (organic) fiber assembly 1Ka ⁇ from the first raw fabric roll 1305 (upper roll) 1Kd) and the second (organic) fiber assembly 1H (lower organic fiber assembly, second (organic) fiber assembly 1Ha to 1hd) from the second raw fabric roll 1306 (lower roll) It is wound on the reel 1311 in a state shifted by Xb. As shown in FIG.
- the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H in a cross section perpendicular to the winding direction in the state of being wound on the winding frame 1311 They are alternately stacked in a state shifted by a fixed amount Xb, and are continuously wound from the inside to the outside and stacked. Therefore, since the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are shifted by a predetermined amount Xb, the first (organic) fiber assembly 1K (upper organic fiber assembly) ) Slit portion (first slit portion 57 (upper slit portion)) and second (organic) fiber assembly 1H (lower organic fiber assembly) slit portion (second slit portion 58 (lower side).
- the distance from the slit portion)) corresponds to the amount of deviation Xb, and the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are laminated by the amount of this Xb.
- the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are difficult to separate due to friction or the like.
- the core material 5 in which a plurality of fiber assemblies 1 is a vacuum.
- a plurality of fiber assemblies 1 continuous sheet-like fiber assemblies 1J, first (organic) fiber assemblies 1K, and second (organic) fiber assemblies 1H
- the thickness t in the pulled state becomes thicker, it becomes more difficult to bend, but in the present embodiment, two slit portions (first slit portion 57) are separated by a predetermined amount Xb. Since the second slit portion 58) exists, the two slit portions (the first slit portion 57 and the second slit portion 58) can be easily bent even if the thickness is increased by bending in two stages. (To obtain a predetermined bending angle).
- the lap allowance Xb is determined according to the thickness of the core material 5. That is, when the thickness of the core material 5 is small, the predetermined amount Xb may be small. However, if the thickness of the core material 5 is increased, it becomes difficult to bend, so the predetermined amount Xb is appropriately increased. Here, if the predetermined amount Xb is too small, the overlapping length (lapping margin) is shortened and frictional force cannot be obtained, so that the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are wrapped. In this embodiment, the lap allowance Xb is set to 7 mm or more (preferably 10 mm or more).
- the lapping margin is 5 mm
- the necessary frictional force cannot be obtained because the lapping margin is short
- the second (organic) fiber assemblies 11Ha to 1hd of the second (organic) fiber assembly 1H were separated from the slit portion, and the core material 5 having a predetermined width was not obtained.
- the lapping allowance Xb is 10 mm or more, a frictional force can be stably obtained even when an ear is used as the lapping portion, and a decrease in thermal conductivity can be suppressed to a small level.
- the distance (Xb) between the two slit portions is increased, the width of the folded portion is increased, and the folding is difficult to be performed.
- the lapping allowance Xb is preferably about 30 mm or less.
- FIG. 16 is a diagram showing the first embodiment, and is a perspective view of a core material when a core material is manufactured by winding it on a winding frame using a combination original fabric roll in which three original fabric rolls are combined.
- the first (organic) fiber assembly 1K upper organic fiber assembly, first (organic) fiber assembly 1Ka, 1Kb, 1Kd
- the second (organic) fiber assembly 1H lower organic fiber assembly, second (organic) fiber assembly 1Ha, 1Hb, 1Hd) from the second raw fabric roll 1306 (lower roll) is a predetermined amount.
- the core material 550 may be simply referred to as a core material.
- the core material 550 is a flat plate portion 551g (smooth portion) provided between two bent portions 551f (folded end portion, folded portion) bent by the clamp member 1320 and the two bent portions 551f. It consists of. Further, the adjacent portions of the first (organic) fiber assemblies 1Ka, 1Kb, 1Kd of the first (organic) fiber assembly 1K (upper organic fiber assembly) are the first slits shown in FIG. Portion 57 (upper slit portion), and adjacent portions of the second (organic) fiber assemblies 1Ha, 1Hb, 1Hd of the second (organic) fiber assembly 1H (lower organic fiber assembly), It is the 2nd slit part 58 (lower side slit part). The distance (length) in the width direction between the first slit portion 57 and the second slit portion 58 corresponds to the shift amount Xb. Therefore, the first slit portion 57 and the second slit portion 58 can be easily bent.
- the winding end portion 551Je is disposed on the flat plate portion 551g in FIG. 16, but is desirably disposed in the vicinity of the bent portion 551f. If the winding end portion 551Je is disposed on the flat plate portion 551g, a step is likely to occur in the flat plate portion 551g, which is not preferable. Further, when the core member 551 is formed into a flat plate shape by the clamp member 1320, the winding end portion 551Je is not formed. The distance from the position of the clamp member 1320 and the length from the position of the clamp member 1320 to the end of winding end 551Je are increased.
- the portions of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H up to the position of the clamp member 1320 and the winding end end portion 551Je are not clamped, and thus are separated from the core material 550. Since there is a possibility of bending, it is preferable that the winding end portion 551Je is cut so that it is in the vicinity of the bent portion 551f that can be clamped by the clamp member 1320. It is preferable to cut the clamp member 1320 after clamping (preferably immediately after), and it is preferable to cut the flat plate portion 551g in the vicinity of the bent portion 551f. The risk of bending and bending is reduced, and the flat plate portion 551g is unlikely to have a step, the step does not get caught, and the appearance is good.
- three original rolls main body portion A 1301 a, main body A 1301 a, and first original roll 1305 or second original roll 1306, which are combined original rolls composed of a plurality of original rolls.
- an ear raw roll whose one side is an ear may be used for the original fabric rolls (main body A1301a, main body D1301d) on both sides in the width direction.
- the ear portion of the ear portion raw fabric roll may be arranged so as to face the main body portion B1301b which is the main portion raw fabric roll which is a raw fabric roll having no ear portion arranged in the center.
- FIG. 17 is a diagram illustrating the first embodiment, and is a diagram for explaining a configuration of another combination original fabric roll.
- a first original roll 1305 (upper roll) that is a combined original roll is composed of a main body A 1301a, a main body B 1301b, and a main body D 1301d. They are arranged in the width direction so as to be adjacent to each other. That is, a body part B1301b which is a body part original fabric roll which does not have an ear part, and a body part A1301a and body part D1301d which are ear part raw fabric rolls which have ear parts on both sides are arranged at the center in the width direction. And the ear
- edge part original fabric roll is not arrange
- a cut surface is formed on both sides in the width direction instead of the ears, so both sides in the width direction of the core material 5 are cut. This eliminates the need for a low-cost vacuum heat insulating material.
- main body original fabric roll main body portion B1301b
- ear main body A1301a, main body D1301d ear main body A1301a, main body D1301d
- one of the ear parts of the ear part roll (main part A1301a, main part D1301d) is arranged so as to be adjacent to the main part roll (main part B) side at the center position. May be.
- the ear roll may be arranged so that the ear is only on one side of the combined original roll. In this case, the ear roll is arranged on both sides of the combined original roll.
- the organic fiber 2 in the ear part is present in a necessary thickness, and the thickness variation is small. If the variation in position (ridgeline) is small and there is no problem in heat insulation performance or manufacturing of the core material 5 or the vacuum heat insulating material 7, the width even if used in the width direction end side of the raw material roll in combination with the ear raw material roll There is no need to cut the direction end face.
- Organic) fiber assembly 1K for example, first (organic) fiber assembly 1Ka to 1Kd) or second (organic) fiber assembly 1H (for example, second (organic) fiber assembly 1Ha to 1Hd)
- the width that has been conventionally discarded in at least one of the plurality of constituent fiber assemblies 1 for example, the first (organic) fiber assemblies 1Ka to 1Kd1 and the second (organic) fiber assemblies 1Ha to 1Hd
- Ear part fiber aggregates having ears (not cut surfaces) whose ridge lines are not aligned on the direction end side for example, fiber aggregates wound around the main part A and the main part D, which are ear part raw rolls
- the first (organic) fiber assembly 1K for example, the first (organic) fiber assembly 1Ka to 1Kd
- the second (organic) fiber assembly 1H for example, the second (organic) fiber assembly Width direction of a fiber assembly material in which at least one of the plurality of fiber assemblies constituting the body 1Ha to 1Hd) is not aligned with a ridge line (for example, a fiber assembly wound around a raw roll material having an ear part)
- Ear part fiber aggregates including both ends (ear parts) for example, fiber aggregates wound around the main body part A1301a (main body part A) and the main body part D1301d (main body part D) which are rolls of the ear part
- FIG. 18 shows the first embodiment and is a perspective view showing a state in which the vacuum heat insulating material is bent.
- 18A is a perspective view of a state in which the vacuum heat insulating material 7 is bent
- FIG. 18B is an enlarged view of a main part of a bent portion of the vacuum heat insulating material 7.
- the vacuum heat insulating material 750 is sealed in a state where the core material 550 is inserted into the outer packaging material 4 having gas barrier properties and the inside is decompressed.
- the vacuum heat insulating material 750 is bent in two stages at the first slit portion 57 and the second slit portion 58 of the core material 550 to form a bent portion 59.
- the bent portion 59 is bent with the width of the lapping allowance Xb.
- the width of the lapping allowance Xb corresponds to the distance (length) between the first slit portion 57 and the second slit portion 58, and is substantially the same length.
- the vacuum heat insulating material 750 may be simply referred to as a vacuum heat insulating material.
- the vacuum heat insulating material 750 has laminated
- the outer packaging material 4 is recessed at the first slit portion 57 and the second slit portion 58, respectively, and a concave portion 751 is obtained.
- 752 are formed.
- a substantially trapezoidal protruding portion 753 is formed so that the two first slit portions 57 and the second slit portion 58 protrude between the two recessed portions 751 and 752 respectively.
- the bent portion 59 includes recessed portions 751 and 752 in which the two slit portions 57 and 58 are recessed, and a substantially trapezoidal protruding portion 753 formed so as to protrude between the two recessed portions 751 and 752. Therefore, it can be easily bent by using the inclined surface of the substantially trapezoidal protrusion 753 with the recesses 751 and 752 as a base point. Moreover, the recessed part 751,752 of the part of the 1st slit part 57 and the 2nd slit part 58, and the trapezoid-shaped protrusion part 753 formed between these recessed parts are the both sides of the thickness direction of the vacuum heat insulating material 750.
- the vacuum heat insulating material 750 can be easily bent at the first slit portion 57 and the second slit portion 58 formed on both sides of the sheet and the surface. Therefore, even if it is bent, the outer packaging material 4 will not be torn or damaged, and the heat insulation performance will not be reduced. Therefore, it is highly reliable, can suppress the deterioration of the heat insulation performance, and can be bent regardless of the thickness. A vacuum heat insulating material with a high degree of freedom is obtained.
- the bending confirmation was performed with the thickness t of 5 mm, 7 mm, 10 mm, and 30 mm.
- the fiber assembly 1 and the continuous sheet-like fiber assembly 1J is two (in FIG.
- the first (organic) fiber assemblies 1K and the second (organic) fiber assemblies. 1H) there are two slits for one bent part 59, so there are only two recessed parts and it is difficult to bend. It is better to have three or more portions and three or more recesses by slits, which are appropriately determined depending on the thickness t of the vacuum heat insulating material 7, the material and characteristics of the fiber assembly 1, the material of the outer packaging material 4, the tensile strength, and the like. It only has to be selected.
- a plurality of (for example, two) fiber assemblies 1 and continuous sheet-like fiber assemblies 1J are overlapped and shifted multiple times by a predetermined length (wrap allowance Xb).
- the number of slits for one bent portion is also equal to the number of the fiber aggregates 1 and the continuous sheet-like fiber aggregates 1J (a plurality, for example, When three sheets are shifted and overlapped, there can be three slits for one bent part), so even if the thickness of the vacuum heat insulating material is increased, it is formed by slit parts provided on both sides of the sheet surface. It becomes possible to bend to the both sides of a sheet surface more easily than the bending part 59 by a dent part.
- FIG. 19 shows the first embodiment, and is a view of the vacuum heat insulating material viewed from the width direction.
- the vacuum heat insulating material 750 has a predetermined thickness portion 750c having a predetermined thickness t and a thickness of about 1 ⁇ 2 of the predetermined thickness t, and is a thin wall provided on both sides of the predetermined thickness portion 750c in the width direction. Parts 750a and 750b.
- the wrap margin Xb is preferably about 7 mm or more and about 30 mm or less when the vacuum heat insulating material 750 is bent and used.
- the wrap allowance Xb is larger when the wrap allowance Xb is larger, the frictional force becomes greater and the reliability is improved.
- the lap allowance Xb is preferably about 30 mm or less.
- the wrap margin Xb is also affected by the thickness t of the vacuum heat insulating material 750, it is preferably about 1 to 5 times (preferably 3 times or less) the predetermined thickness t of the vacuum heat insulating material 750.
- the predetermined amount Xb is set to 7 mm or more to prevent the core material from being separated, and the predetermined amount Xb is set to about three times or less the thickness t of the core material 550 in a substantially vacuum state in the outer packaging material 4.
- the bendability is good and the width of both end portions in the width direction of the core material 5 is reduced to suppress a decrease in heat insulation performance.
- the range of the lapping allowance Xb is set according to the thickness of the core material 5 at the time of decompression, reliability (the core material 550 is not separated or separated at the slit portion) can be obtained, and it is easy to bend and has a heat insulation performance.
- a good core material and vacuum heat insulating material 750 are obtained.
- the example in which the two slit portions (the first slit portion 57 and the second slit portion 58) are bent in two stages has been shown. If a plurality of combined original fabric rolls are overlapped with a predetermined amount Xb and wound on a reel, a plurality of slit portions exist, so that a plurality of slit portions are present. Since the bending angle at one slit portion can be reduced, it is possible to easily bend the core material 550 and the outer packaging material 4 at a predetermined angle without applying an excessive force when the core material 550 or the outer packaging material 4 is bent.
- the bent portion 59 can be bent at an acute angle and can be applied as a heat insulating material for any device. Accordingly, it is possible to insulate piping such as a condensation pipe of equipment such as a refrigerator and an air conditioner.
- the vacuum heat insulating material of this embodiment is excellent in bending workability, it can be bent and deformed along the shape of the pipe even if heat insulation is performed by sandwiching a pipe such as a condensation pipe between the vacuum heat insulating material and the vacuum heat insulating material. The heat leakage from the gap between the vacuum heat insulating material and the pipe can be suppressed, and the heat insulation performance can be prevented from being lowered.
- the vacuum heat insulating materials 7 and 750 of the present embodiment include a first (organic) fiber assembly 1K in which a plurality of sheet-like fiber assemblies 1J continuous in the length direction are arranged adjacent to each other in the width direction,
- the second (organic) is provided so as to overlap one (organic) fiber assembly 1K in the vertical direction, the front-rear direction, or the left and right, and a plurality of adjacent (line-shaped) fiber-like fiber assemblies 1J in the width direction.
- the fiber assembly 1H, the first (organic) fiber assembly 1K, and the second (organic) fiber assembly 1H are continuously wound from the inside to the outside with a predetermined amount Xb shifted in the width direction.
- a core member 5,550 composed of a laminated structure of fiber assemblies formed in a flat plate shape, and a seal part that houses the core member 5,550 inside and seals the periphery in a state where the inside is decompressed
- a gas barrier outer packaging material 4 having Since the outer packaging material 4 is sealed by sealing the sealing portion with the portion in a substantially vacuum state, a large width can be obtained by combining a plurality of small fiber assemblies (fiber assemblies wound around the main body of the raw roll). Core material 5,550 can be formed. Further, by appropriately selecting the number of the plurality of fiber assemblies 1, the number of continuous sheet-like fiber assemblies 1J, the plurality of fiber assemblies 1, and the width of the continuous sheet-like fiber assemblies 1J, the width of the fiber assembly can be set.
- the width of the core materials 5 and 550 can be set freely without being caught, the degree of freedom in designing the core materials 5 and 550 and the vacuum heat insulating materials 7 and 750 is increased.
- the core materials 5 and 550 can be easily manufactured in a short time with a simple facility in which the manufacture of 550 winds up the fiber assembly.
- the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H is inserted between the adjacent fiber assemblies (for example, the first The first slit portion 57 and the second slit portion 58 of the (organic) fiber assembly 1Ka and the first (organic) fiber assembly 1kb) are formed on the front and back surfaces of the flat core materials 5 and 550. Since the shape is recessed in the length direction, the vacuum heat insulating materials 7 and 750 are formed from the first slit portion 57 and the second slit portion 58 of the recessed shape to the flat-plate (sheet-like) core materials 5 and 550. It can be easily bent on either the front or back side.
- the width of the fiber assembly 1 and the continuous sheet-like fiber assembly 1J (the width of the main body portion of the raw fabric roll) can be appropriately selected so that the slit portion (adjacent portion) can be disposed at a site that needs to be bent.
- the wrap allowance (predetermined amount Xb) between the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H can be appropriately selected, and no special processing for bending is required. Become.
- the bent portion 59 is formed on both the front and back surfaces with respect to the sheet surface, it can be easily bent in both the front and back directions with respect to the sheet surface using the first slit portion 57 and the second slit portion 58. It becomes.
- connection portion between adjacent fiber assemblies (main body A1301a, main body B1301b, main body C1301c, main body D1301d) of the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. Therefore, it is not necessary to separately process a concave portion for bending, and the concave portions formed by the first slit portion 57 and the second slit portion 58 that are formed in the course of manufacturing the core material 550. It becomes possible to bend easily by 751,752.
- the recessed parts 751, 752 formed by the first slit part 57 and the second slit part 58 can be formed on both sides in the thickness direction of the vacuum heat insulating material 750 (front and back of the sheet surface), for example, the thickness of the core material Even when the thickness of the sheet is increased, the first slit portion 57 and the second slit portion 58 are formed on both sides of the sheet surface. Therefore, the core material and the outer packaging material 4 are not torn or damaged at the time of bending, and it is possible to suppress a decrease in heat insulation performance.
- the core material is separated because the wrap allowance Xb is 7 mm or more.
- the wrap margin Xb is not more than three times the thickness t of the core material in a substantially vacuum state in the outer packaging material 4, the foldability at the bent portion 59 can be improved. Therefore, it can be easily applied as a heat insulating material for a device having two wall surfaces that are continuous at a predetermined angle, such as a refrigerator, and a decrease in heat insulating performance can be suppressed.
- a plurality of fiber assemblies for example, the first (organic) fiber assemblies 1Ka to 1Kd, the second (organic) fiber assembly 1H, the second (organic) fiber assembly 1H, the second (organic) fiber assembly 1H, the second (organic) fiber assembly 1H,
- an ear fiber assembly having an ear portion (not a cut surface) whose edge line is not aligned on the width direction end side is used in at least one of (organic) fiber assemblies 1Ha to 1Hd)
- the ear fiber assembly (fiber assembly wound around the ear raw roll) having the discarded ears can be used, and the material is not wasted. Therefore, the low-cost core materials 5 and 550 and the vacuum heat insulating materials 7 and 750 are obtained.
- the refrigerator and apparatus which applied the vacuum heat insulating materials 7 and 750 of this Embodiment are the vacuum heat insulating materials 7 and 750 of the 1st (organic) fiber assembly 1K or the 2nd (organic) fiber assembly 1H. It is bent at a predetermined angle (for example, approximately 90 degrees) at a connecting portion (slit portion) between adjacent fiber assemblies, and arranged on at least two continuous wall surfaces of a heat insulating box having an upper surface, both side surfaces, a back surface, and a bottom surface. Therefore, in the past, it has been difficult to bend the vacuum heat insulating materials 7 and 750 freely at a predetermined angle, so that it is difficult to apply them to two continuous wall surfaces.
- a predetermined angle for example, approximately 90 degrees
- the vacuum heat insulating material can be continuously arranged at the corner between two continuous wall surfaces having a predetermined angle, the vacuum heat insulation with respect to the outer surface area of the box (outer box) excluding the door of a device such as a refrigerator.
- the coverage of the material can be greatly improved. For example, in the case of a refrigerator, a coverage of 80% or more with respect to the outer box surface area, which has been difficult in the past, is possible.
- the sheet-like fiber assembly 1 is cut into a predetermined size and laminated to form a core material 5 to produce the vacuum heat insulating material 7, or a plurality of sheet-like fiber assemblies 1 are laminated.
- the end face 5a is cut and formed into a predetermined size to form the core material 5 to manufacture the vacuum heat insulating material 7 (core material manufacturing method 1), or a continuous sheet-like fiber assembly 1J ( For example, a method of manufacturing the core material 5 by continuously winding the organic fiber aggregate) into a coil shape (core material manufacturing method 2), or combining a plurality of raw fabric rolls in the width direction has one large width.
- a plurality of original fabric rolls are arranged in the width direction and a first original fabric roll (upper original fabric roll) 1305 which is a combined original fabric roll having one predetermined width, and a plurality of original fabric rolls
- a plurality of original fabric rolls arranged in the width direction and used as a second original fabric roll (lower original fabric roll) 1306, which is a combined original fabric roll having one predetermined width, and at least one by one, the first original fabric roll 1305 of the fiber assembly 1K and the fiber assembly 1H of the second raw fabric roll 1306 are overlapped in a substantially right angle direction (radial direction of the winding frame 1311) with respect to the sheet surface and wound around the winding frame 1311 to wrap the core material 5.
- a third original roll 1307 that is a single original roll having a first predetermined width is used instead of the second original roll 1306 that is a combined original roll. Use Case will be described.
- a first sheet having a first predetermined width obtained by continuously winding a continuous sheet-like fiber aggregate 1, 1 J (for example, an organic fiber aggregate) having a predetermined width in at least one original fabric roll in a coil shape.
- the fiber assemblies 1 and 1J of the 3 original fabric rolls 1307 and a continuous sheet-like fiber assembly having a width smaller than the first predetermined width are combined in the width direction to obtain a substantially first predetermined width.
- the first original roll 1305 is wound around the third original roll 1307 in a state where the fiber assembly 1K of the first original roll 1305, which is a combined original roll, is overlapped on the sheet surface in a substantially perpendicular direction.
- a method for manufacturing the core material 560 by winding the frame 1311 so as to be on the outer side in the radial direction will be described with reference to FIGS.
- FIG. 42 shows a combination of at least one original fabric roll 1307 having a first predetermined width and an original fabric roll having a width smaller than the first predetermined width in the width direction so as to be substantially equal to the first predetermined width.
- FIG. 10 is a schematic diagram of a winding device when winding around a winding frame 1311 using at least one combination original roll 1305, and is a diagram illustrating another core material manufacturing method of the present embodiment.
- FIG. 43 is a perspective view of a core material manufactured by winding it on a reel using at least one original fabric roll 1307 having a predetermined width and at least one combined original fabric roll.
- FIG. 44 is a cross-sectional view of a core material manufactured by winding on a reel using at least one original roll having a predetermined width and at least one combined original roll
- FIG. 45 is at least one predetermined width. It is a perspective view of the vacuum heat insulating material using the core material manufactured by winding and winding on the winding frame using the original fabric roll which has, and at least 1 combination original fabric roll.
- Coil a sheet-like fiber assembly 1, 1J (for example, an organic fiber assembly) in which at least one of the plurality of original fabric rolls is continuous in the length direction having the first predetermined width.
- a first raw roll 1307 having a first predetermined width wound in a shape and a fiber assembly continuous in a length direction having a second predetermined width smaller than the first predetermined width are the first predetermined At least one combined original fabric roll (for example, a combination of only two original fabric rolls having a second predetermined width that is smaller than the first predetermined width) or a second
- a first raw roll 1305 that is a combination of a raw roll with a predetermined width and a third raw roll with a width smaller than the second predetermined width, or a combination with an ear original roll.
- the first original fabric roll 1301 is equivalent to the first original fabric roll 1305 (or the second original fabric roll 1306) explained in FIG. Is omitted, but a plurality of substantially cylindrical (or coiled) raw rolls (for example, a main body A1301a, a main body B1301b, a main body C1301c, and a main body) wound by approximately the same number of windings (same number of layers).
- D1301d) is a first combination that has a gap in the width direction (may be arranged adjacent to each other so as to be a minute gap, may be arranged without a gap, or may be arranged via a spacer so as to provide a predetermined gap). It is formed to have a width substantially equal to the predetermined width.
- the third original fabric roll 1307 includes a substantially cylindrical original fabric roll 1301 having a predetermined width around which the fiber assemblies 1 and 1J having a predetermined width and having a predetermined width described in FIGS. 6 to 9 are wound.
- the same parts are denoted by the same reference numerals, and detailed description thereof is omitted.
- the third original fabric roll 1307 has a first predetermined width and is formed such that the fiber assemblies 1 and 1J continuous in the length direction are continuously wound in a coil shape and have the first predetermined width.
- the fiber aggregates 1 and 1J wound around the third raw fabric roll 1307 are continuous in the width direction and set to the same dimensions as the width H of the core material 560.
- the third original fabric roll 1307 may be manufactured by winding the first fiber assembly 1 and 1J having a predetermined width, or a fiber assembly having a width larger than the first predetermined width. You may manufacture by cutting a width direction so that a width dimension may turn into a 1st predetermined width after winding in a substantially cylindrical shape.
- the plurality of substantially cylindrical (or coil-shaped) original fabric rolls (for example, the main body portion A1301a, the main body portion B1301b, the main body portion C1301c, and the main body portion D1301d) of the first original fabric roll 1305 have the same width. Or different widths. Moreover, the ear
- the first original fabric roll 1305 has the same structure as the first original fabric roll 1301, and is arranged in the width direction so that a plurality of original fabric rolls (for example, a plurality of main body portions) are adjacent to each other. Because of the combined original fabric roll, there is a minute gap or a predetermined gap between adjacent main body parts (for example, between the main body part A (1301a) and the main body part B (1301b)).
- the slit portions (for example, the slit portion A between the main body portion A1301a and the main body portion B1301b, the slit portion B between the main body portion B1301b and the main body portion C1301c, the main body portion C1301c and the main body portion D1301d) are not continuous. There is a slit portion C between them.
- the third original roll 1307 is a predetermined width of the original roll material applied to the original roll (for example, the main body A1301a or the main body D1301d) arranged on the end side in the width direction among the plurality of original rolls.
- An ear part raw roll having an ear part that is not aligned with the ridge line generated when it is cut into two pieces may be used.
- a single raw roll (for example, a third roll) having a first predetermined width and a width substantially equal to at least one first predetermined width around which a sheet-like fiber assembly continuous in the length direction is wound.
- a plurality of sheet-like fiber assemblies having a width smaller than the first predetermined width and the original fabric roll 1307 are continuously arranged in the length direction so as to have a width substantially equal to the first predetermined width.
- a plurality of combined original fabric rolls (for example, a first original fabric roll 1305) combined in the width direction as described above, and a fiber assembly 1 of a single original fabric roll 1307 having a first predetermined width, 1J and the fiber assembly 1K of the combination fabric roll 1305 are stacked so that the fiber assembly 1 and 1J of the single fabric roll 1307 are radially inward of the winding frame 1311 in a direction substantially perpendicular to the sheet surface.
- the wound into the core material 560 is formed.
- the core material 560 can be easily manufactured simply by stacking and winding the continuous fiber aggregates 1, 1 ⁇ / b> J, and 1 ⁇ / b> K in a substantially right angle direction on the sheet surface. Can be used effectively, and the core material 560 and the vacuum heat insulating material 760 that do not waste at low cost can be obtained.
- the first fiber assembly and the third fiber assembly are overlapped in the direction substantially perpendicular to the sheet surface of the first fiber assembly 1K or the third fiber assembly 1, 1J from the inside to the outside.
- each original fabric roll of the 1st original fabric roll 1305 which is a combination original fabric roll (For example, between main-body part A and main-body part B, between main-body part B and main-body part C, main-body part C, and A spacer having a predetermined width is provided between the main body portion D and the like, and between the individual fiber assemblies of the fiber assembly 1K of the first raw fabric roll 1305 (for example, between the fiber assemblies 1Ka and 1Kb, 1 Kb and Since a predetermined clearance corresponding to the width of the spacer is set between 1 Kc and between 1 Kc and 1 Kd), a recess having a substantially predetermined width is formed in the vacuum heat insulating material 560, and piping is provided in this recess. It is possible to embed or position the pipe, to reduce the heat insulation time of the pipe and the work time for installing the pipe, and to obtain a highly efficient and low cost vacuum heat insulating material and equipment.
- the first (organic) fiber assembly 1K (first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd) of the first roll roll 1305 which is a combination roll
- the third fiber aggregates 1 and 1J of the third original fabric roll 1307 are stacked in a substantially perpendicular direction to the sheet surface and wound on the winding frame 1311
- the first ( (Organic) fiber assembly 1K (first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd) with respect to the rotation shaft 1315 of the winding frame 1311 rather than the fiber assembly 1, 1J of the third original fabric roll 1307 It is better to overlap so that it is outside in the radial direction.
- a sheet-like third fiber assembly 1, 1J continuous to the winding frame 1311 and a sheet-like first (organic) fiber assembly 1K first (organic)
- the fiber assemblies 1Ka, 1Kb, 1Kc, and 1Kd) are wound around the winding frame 1311 in a substantially cylindrical shape (coiled shape) with a predetermined tension, and the substantially cylindrical fiber assemblies 1, 1J are formed by the clamp member 1320.
- the fourth fiber assembly having the first predetermined width without any breaks in the width direction is made adjacent to the plurality of fiber assemblies in the width direction.
- the third fiber assembly is placed on the innermost peripheral side of the substantially cylindrical fiber assembly rather than the first fiber assembly in which there are cuts and gaps in the width direction.
- Radial direction of the reel 1311 rather than the assembly
- the winding is performed in a state where the third fiber assembly is overlapped with the first fiber assembly. Since the frame 1311 is wound from the inner side toward the outer side, when the substantially cylindrical fiber assembly wound around the winding frame 1311 is extracted from the winding frame 1311, it has a first predetermined width, and the width direction Since the third fiber assemblies 1, 1J that are continuous to each other are arranged at the innermost side of the substantially cylindrical fiber assembly, the fiber assemblies arranged at the innermost side are continuous in the width direction.
- the fiber assembly is scattered and disturbed.
- the reel 131 Preparation of extraction tends core 560 does not caught on can be shortened is easy and workability improves production time. Further, the quality of the core material 560 manufactured by forming the substantially cylindrical fiber assemblies 1, 1J, 1K extracted from the winding frame 1311 into a flat plate shape is stabilized.
- the width of the plurality of original rolls used for the first original roll 1305 and the number to be used are the first. May be appropriately set so as to be substantially equal to the first predetermined width of the fiber assemblies 1 and 1J of the third raw fabric roll 1307 having the predetermined width, but the first when a plurality of them are arranged in the width direction.
- the width of the original roll 1305 (the total width including the gaps between the plural original rolls and the original roll) is set to be slightly smaller than the first predetermined width of the third original roll 1305 Is the fiber assembly 1K wound around the first original fabric roll 1305 and the fiber assemblies 1 and 1J wound around the third original fabric roll 1307. It is sea than fiber aggregate 1, 1J of raw fabric roll Is better wound on the reel 1311 superimposed so as to be substantially perpendicular outer, easy winding less likely to break apart the individual fiber aggregate even when wound on the winding 1311 with respect to the surface.
- first original roll 1305 and the third original roll 1307 are each made of a reel 1K of the first original roll 1305 than the fiber aggregates 1 and 1J of the third original roll 1307.
- the sheet is wound up so as to be outside in the direction substantially perpendicular to the sheet surface, but the manufacturing method of the vacuum heat insulating material 560 is the same as FIG. 9.
- at least two original rolls for example, the first roll shown in FIGS. 12 to 18 stacked in a direction substantially perpendicular to the sheet surface.
- the single original fabric roll for example, the third original fabric roll 1307) and the first in the at least one width direction in which the fiber assembly having the first predetermined width and continuous in the length direction are wound.
- the width is such that a plurality of raw rolls each having a width smaller than a predetermined width of 1 and wound with continuous fiber assemblies are arranged in the width direction to have a width substantially equal to the first predetermined width.
- a plurality of combined original fabric rolls for example, a first original fabric roll 1305) combined in a plurality of directions, and an end material such as an ear portion original fabric roll is provided on the first original fabric roll which is a combined original fabric roll. Since it can be used, it is no longer necessary to dispose of scraps that have been disposed of in the past, and a core material and a vacuum heat insulating material can be produced efficiently at low cost.
- a plurality of fiber assemblies 1K of a single original fabric roll 1307 and a combination original fabric roll 1305 are overlapped in a direction substantially perpendicular to the sheet surface, and a predetermined cylindrical winding frame 1311 is predetermined.
- the core material 560 is manufactured by winding the fiber assembly from the inside to the outside with the tension of, and then clamping the substantially cylindrical fiber assembly with the clamp member 1320 and then removing the tension from the winding frame 1311.
- the core material can be easily manufactured with simple equipment.
- FIG. 43 shows a perspective view of the core material 560 manufactured as described above.
- the first (organic) fiber assembly 1K for example, the first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd, 1Ke
- the third fiber assembly 1 and 1J (lower fiber assembly) of the original fabric roller 1307 (lower roll) are wound in a state where five original fabric rolls are arranged in the width direction through a predetermined gap XK.
- the film is wound around 1311 and continuously wound from the inside toward the outside to be laminated.
- a first fiber assembly that is a combined fiber assembly aggregate is overlapped on the outside of a single third fiber assembly in a direction substantially perpendicular to the sheet surface of the fiber assemblies 1 and 1J. Therefore, a plurality of first (organic) fiber assemblies 1Ka, 1Kb, 1Kc, 1Kd, 1Ke constituting the first fiber assembly which is a combined fiber assembly are formed on the outer surface of the core material 560. Are arranged side by side through a gap (a minute gap or a predetermined gap) in the width direction.
- the width of the third fiber assembly may be substantially equal to the width of the first (organic) fiber assembly 1K.
- the (organic) fiber assembly 1K is made wider than the width of the first (organic) fiber assembly 1K so that a predetermined clearance corresponding to the length XT (for example, XTa or XTe) is obtained on the outer side in the width direction of the first (organic) fiber assembly 1K.
- the first fiber assembly 1K is not present in the portion of length XT on at least one end side in the width direction of the third fiber assembly. There are only fiber assemblies.
- the first (organic) fiber assembly 1K and the third fiber assembly are overlapped and wound from the inside to the outside and formed into a flat plate shape, at least one portion of the length XT on the width direction end side
- the core material 560 in which the first (organic) fiber assembly 1K does not exist is manufactured. Accordingly, the first (organic) fiber assembly 1K and the third fiber assembly are overlapped and wound from the inside to the outside, and the core material formed into a flat plate shape is inserted into the outer packaging material 4 and the outer packaging material is decompressed.
- the vacuum heat insulating material 760 When the vacuum heat insulating material 760 is manufactured by sealing 4, the vacuum heat insulating material 760 has thin portions H ⁇ b> 1 and H ⁇ b> 2 on the width direction end side similarly to the vacuum heat insulating material 750 shown in FIG. 19.
- the length of the thin portion H1 is substantially equivalent to XTa
- the length of the thin portion H2 is substantially equivalent to XTe
- the width H3 of the central portion is substantially equivalent to the width of the first fiber assembly 1K.
- the thin portions may be provided on both ends in the width direction of the vacuum heat insulating material 760, but may be provided on at least one end in the width direction.
- Length XT between the width direction end side fiber assemblies 1Ka and 1Ke arranged on the side and the end portion in the width direction of the third fiber assembly (for example, in FIG.
- the width of the third fiber assembly is at least the first (organic) fiber assembly 1 by the length XTe). Since the width is larger than the thin portion H1 (or H2) is obtained at one end of at least the width direction similarly to the vacuum heat insulating material 750 in the vacuum heat insulating material 760.
- the vacuum heat insulating materials 750 and 760 have a predetermined thickness t in a state where the core materials 550 and 560 are reduced in pressure in the outer packaging material 4 and sealed, and the width direction of the end portions in the width direction of the core materials 550 and 560 Is a thin stepped shape (thin wall portion H1 or H2) protruding outward in the width direction.
- the vacuum heat insulating materials 750 and 760 have the thickness of the vacuum heat insulating materials 750 and 760 on one end side in the width direction or both end sides in the width direction of the core materials 550 and 560 without special processing. Since thin portions (H1 and H2 in FIG. 19) having a thickness smaller than (the thickness t of the core materials 5, 550, 560) are obtained, when one vacuum heat insulating material 750, 760 is bent into a cylindrical shape, etc.
- the cross-sectional shape in a cross section substantially perpendicular to the width direction of the end surface in the length direction of the plurality of vacuum heat insulating materials 7, 700, 701, 750, and 760 is a substantially triangular shape whose thickness decreases toward the outside in the length direction. Therefore, if it is connected so that the substantially triangular slope portions (slope portions of length L2 in FIG. 11) are in contact with each other, they can be brought into contact with each other where the core members 550 and 560 exist, and Refrigerator equipped with high-performance vacuum heat insulating materials 7,700,701,750,760 and vacuum heat insulating materials 7,700,701,750,760, which can reduce the junction thickness and reduce heat leakage from the contact portion. Etc. can be obtained.
- the fiber assembly 1 and the continuous sheet-like fiber assembly 1J do not have to be continuous in the length direction, and are substantially triangular in a state where the fiber assemblies are laminated. Any cross-sectional shape may be used. That is, the vacuum insulating materials 7,700,701 having a predetermined length L, a predetermined width H, and a predetermined thickness t are sealed in a state where the core materials 5,550,560 are decompressed inside the outer packaging material 4.
- the core material 5, 550, 560 is constituted by a laminated structure of the fiber assembly 1 and the continuous sheet-like fiber assembly 1J, and the cross section of at least a part of the end in the length direction or the width direction is formed. What is necessary is just the substantially triangular shape which thickness becomes small toward the outer side.
- the core materials 5, 550, 560 have a laminated structure in which sheet-like fiber assemblies 1, 1J having a predetermined width H and continuous in the length direction are continuously wound from the inside to the outside. The same effect can be obtained if the lengthwise ends of the core materials 5, 550, 560 are substantially triangular with the core materials 5, 550, 560 sealed in the outer packaging material 4.
- the fiber assembly 1 and the continuous sheet-like fiber assembly 1J do not have to be continuous in the length direction, and a fiber assembly having a length L.
- a plurality of layers may be stacked. That is, the vacuum insulating materials 7,700,701 having a predetermined length L, a predetermined width H, and a predetermined thickness t are sealed in a state where the core materials 5,550,560 are decompressed inside the outer packaging material 4. , 750, and 760, the thin-walled portions 750a and 750b may be provided at the ends in either the length direction or the width direction, and the thin-walled portions 750a and 750b may protrude outward.
- the core members 5, 550 and 560 have a laminated structure in which a plurality of sheet-like fiber assemblies 1 having a predetermined width H and continuous sheet-like fiber assemblies 1J are laminated in a stacked state, and are thin-walled portions. If 750a is formed by laminating a plurality of fiber assemblies 1 and at least one of continuous sheet-like fiber assemblies 1J shifted by a predetermined amount in the width direction, the same effect can be obtained. .
- the vacuum heat insulating materials 750 and 760 of the present embodiment have a flat plate shape having a predetermined thickness, and the cross-sectional shape of one end (for example, the length direction) of the flat plate shape has a thickness toward the outside. Since the cross-sectional shape of the end portion in the other direction (for example, the width direction) is a stepped shape having a thin portion with a small thickness, the core members 550 and 560 can be simply wound and stacked. It can be easily manufactured by the method, and the end material can be used effectively.
- the shape of the end can be connected without special processing in the length and width directions, so if the end is in contact, the contact thickness can be reduced and contact can be made. Heat leakage from the portion can be reduced, and devices such as a compressor, a refrigerator, and a water heater equipped with high-performance vacuum heat insulating materials 750 and 760 and vacuum heat insulating materials 750 and 760 can be obtained.
- the core material 560 is in the opposite direction (separated) between the two clamp members 1320 in a state where the two clamp members 1320 are clamped at two locations in the same manner as the core material 5 and the core material 550 shown in FIG.
- the fiber assembly is bent at the clamped portion and folded (bent) at the bent end portion 560f to produce a flat plate shape.
- the core material 560 folded at the bent end portion 560f which is the end portion in the length direction of the core material 560, is the upstream side in the winding direction of the fiber aggregates 1, 1J, and 1K in the same manner as the core material 5 shown in FIG.
- the vacuum heat insulating material 760 is completed by being inserted into the opening 4a of the outer packaging material 4 from the 560fa side and sealed in a state where the inside is decompressed.
- FIG. 44 shows a cross-sectional shape in the width direction of the core material 560 folded into a flat plate shape.
- the core material 560 is continuous in the length direction from the inside to the outside, and is also continuous in the width direction.
- first (organic) fiber assembly 1K first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd, 1Ke
- first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd, 1Ke is wound in a coil shape from the inside, the outer surface of the core 560 Wrapped to come.
- a predetermined gap XK is set between the individual first (organic) fiber assemblies 1Ka, 1Kb, 1Kc, 1Kd, 1Ke of the first (organic) fiber assembly 1K, and the slit portion 560K ( A third slit portion) is formed.
- the predetermined gaps XK are individual predetermined gaps XKab, XKbc, XKcd, XKde, and the individual predetermined gaps XKab, XKbc, XKcd, XKde may be the same or different.
- FIG. 45 shows a vacuum heat insulating material 760 in which the core material 560 is inserted into the outer packaging material 4 and the opening 4a of the outer packaging material 4 is sealed and sealed in a state where the inside is decompressed.
- the vacuum heat insulating material 760 includes a recessed portion 760x (a groove portion, for example, a first recessed portion 760x1 and a second recessed portion 760x2) having a width substantially equal to a predetermined clearance XK provided in the core material 560 in the width direction.
- Third recess 760x3, and fourth recess 760x4 are provided in the width direction continuously in the length direction.
- the width of the first dent portion 760x1, the second dent portion 760x2, the third dent portion 760x3, and the fourth dent portion 760x4 may be the same or different, and may be set as appropriate depending on the size of the pipe. It ’s fine.
- the predetermined clearance XK is continuous in the winding direction (length direction) of the core material 560, if the vacuum heat insulating material 760 is manufactured using the core material 560, the predetermined clearance XK has a width substantially equal to the predetermined clearance XK.
- Concave portions 560X (groove portions) that are continuous in the length direction and have a depth that is approximately 1 ⁇ 4 of the thickness of the vacuum heat insulating material 760 are both sides of the flat plate surface of the flat plate-like vacuum heat insulating material 760 (the concave depths of the concave portions on both sides).
- the thickness of the vacuum heat insulating material 760 can be reduced to about half (about 1/2) the thickness of the vacuum heat insulating material 760, so that a pipe (for example, a condensation pipe, a suction pipe, a discharge pipe, etc.)
- a pipe for example, a condensation pipe, a suction pipe, a discharge pipe, etc.
- the vacuum heat insulating material manufacturing apparatus includes a fiber aggregate 1 having a predetermined width wound around a substantially cylindrical raw fabric roller 1301 cut to a predetermined width, and a continuous sheet shape.
- a winding frame 1311 for winding the fiber assembly 1J into a substantially cylindrical shape, a coil shape, or a polygonal shape for a predetermined number of times R, a fiber assembly 1 wound around the winding frame 1311, and a continuous sheet-like fiber assembly 1J are cut.
- the core member 550 can be easily manufactured with a simple configuration. It can also be shortened. Further, since it is continuously wound in the winding direction, it is not necessary to cut the end surface in the length direction, and since the raw roll that has been cut in the width direction is used, it is not necessary to cut the core material 550. There is no need.
- the manufacturing equipment for cutting the end face of the core material 550 is not required, and the time for cutting is not required. Therefore, the manufacturing equipment can be made inexpensive, and the low-cost core material 550 and the vacuum heat insulating materials 7 and 750 are obtained. It is done.
- variety can be manufactured by combining multiple main-body parts (fiber assembly) of a raw fabric roll with a small width
- variety of the core materials 5 and 550 can be freely set without being restricted by the width
- a core material with a large width can be manufactured from a raw fabric roll having a small width, the storage location for the raw fabric roll can be small, and a large storage location is not required.
- the core members 5 and 550 are formed by stacking continuous belt-like sheet-like members alternately in different directions and forming the core members 5 and 550 so as to overlap each other, the device turns back with an expensive crease. Etc. are unnecessary. Therefore, a lamination facility or the like is not necessary, and the core materials 5 and 550 can be easily manufactured in a short time with a simple facility for winding the fiber assembly.
- the vacuum heat insulating material manufacturing apparatus of the present invention includes a circumferential member 1312 in which a winding frame 1311 is divided into a plurality of parts, and at least one of the circumferential members 1312 (for example, a movable circumferential member 1312a, 1312b) is movable in the direction of the rotation center (rotation axis 1315), and the circumferential members 1312a and 1312b that are movable after the fiber assembly 1 and the continuous sheet-like fiber assembly 1J are wound around the winding frame 1311 are rotated.
- the continuous sheet-like fiber assembly 1J wound in a substantially cylindrical shape After the tension of the continuous sheet-like fiber assembly 1J wound in a substantially cylindrical shape is relaxed, the continuous sheet-like fiber assembly 1J wound in a substantially cylindrical shape It can be withdrawn to facilitate the reel 1311. That is, the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is released from the reel 1311 by loosening the tension of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension. It becomes easy to extract.
- the fiber assemblies 1 and 1J are extracted from the winding frame 1311, they are clamped and extracted by the clamp member 1320. Therefore, the winding frame 1311 can be easily configured with a simple configuration. Thus, the fiber assembly 1 and the continuous sheet-like fiber assembly 1J can be extracted. Further, the two clamp members 1320c and 1320d are moved in the direction substantially opposite to the linear direction while the continuous sheet-like fiber assembly 1J is clamped at two locations using the two clamp members 1320 (clamp members 1320c and 1320d).
- the continuous sheet-like fiber assembly 1J that is wound a plurality of times and stacked in layers is pulled in the opposite direction by the two clamp members 1320c and 1320d. Since it is formed in a flat plate shape bent from the clamped portion, a flat core material 550 in which a continuous sheet-like fiber assembly 1J is continuously wound from the inside to the outside and laminated in a plurality of layers is simple. Easy to mold with equipment.
- a continuous sheet-like fiber assembly 1J having a predetermined width wound around a substantially cylindrical raw fabric roller 1301 cut to a predetermined width is provided a predetermined number of times.
- a separation step of extracting the cut continuous sheet-like fiber assembly 1J from the winding frame 1311 and a continuous sheet-like fiber assembly 1J extracted from the winding frame 1311 in the separation step are formed into a flat core material 550.
- the molding step and the outer packaging material sealing step for sealing the core material 550 in the outer packaging material 4 having gas barrier properties and sealing the inner pressure reduced state It can be produced in a short time the core 550 in a single way. Further, since it is continuously wound in the winding direction, it is not necessary to cut the end surface in the length direction, and since the raw roll that has been cut in the width direction is used, it is not necessary to cut the core material 550. There is no need. Therefore, the manufacturing equipment for cutting the end face of the core material 550 is not required, and the time for cutting is not required, so that the low-cost core material 550 and the vacuum heat insulating materials 7 and 750 can be obtained.
- the separation step clamps the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 a predetermined number of times R and cut with the clamp member.
- Clamping step, fiber assembly tension relaxation step for releasing tension on winding frame 1311 of continuous sheet-like fiber assembly 1J clamped in clamping step, and continuous sheet-like fiber in which tension is released in tension relaxation step Since the assembly 1J is extracted from the winding frame 1311, the continuous sheet-like fiber assembly 1J can be easily extracted from the winding frame 1311 by a simple method.
- the forming step uses two clamp members 1320 (clamp members 1320c and 1320d) to clamp the continuous sheet-like fiber assembly 1J at two locations. Since the core member is formed into a flat plate shape by moving the two clamp members in substantially opposite directions, the sheet-like core member 550 can be easily manufactured by a simple method using only the clamp member 1320.
- the continuous sheet-like fiber assembly 1J is formed by forming continuous organic fibers into a sheet shape, the adverse effects on the human body due to dust can be suppressed and recycled compared to the case of using glass fibers that are inorganic fibers.
- the core material 550 and the vacuum heat insulating materials 7 and 750 having good properties are obtained.
- the organic fiber 2 continuous with the fiber is used, the fiber assembly 1 and the continuous sheet-like fiber assembly 1J are used, and the core is wound around the reel continuously from the inside to the outside.
- the manufacturing apparatus and manufacturing method which manufacture the material 5, the vacuum heat insulating material 7, etc. may be sufficient, and the fiber to be used may not be a continuous long fiber in the manufacturing apparatus and manufacturing method of this Embodiment.
- the fiber assembly may be in the form of a continuous sheet, and it is sufficient that the sheet-like fiber assembly is not damaged when wound around the winding frame with a predetermined tension. Therefore, the fiber assembly 1 may not be the continuous sheet-like fiber assembly 1J, and may be an inorganic fiber assembly.
- continuous sheet-like fiber aggregates may be used as they are, if the continuous sheet-like fiber aggregates are in the form of a raw fabric roll wound around a raw fabric roller, they are easy to manufacture and handle. It is even better because it improves the performance.
- the core material 5 550 is manufactured by stacking and winding the fiber assembly 1 and the continuous sheet-like fiber assembly 1 J
- the core material 5 550 is manufactured by winding without wrapping a predetermined amount Xb. You may do it. If the number of stacked fiber assemblies 1 and continuous sheet-like fiber assemblies 1J is increased, the type of fiber assembly can be changed by the number of stacked sheets. In other words, fiber aggregates with different fiber weights are used, or fiber aggregates with different fiber types (for example, fibers with different temperature characteristics, fibers with different fiber diameters, or tensile strength).
- the core member 5 may be formed by stacking and winding the fiber assemblies having the same width without shifting. Further, the core material 5 may be formed by stacking and winding up fiber assemblies having different widths.
- a fiber having a proof stress (heat resistance) fibers such as LCP and PPS which are organic fibers, or glass fibers which are inorganic fibers alone or in combination
- a vacuum heat insulating material may be manufactured by stacking fiber assemblies using fibers having high temperature proof stress (heat resistance) so as to be arranged on the surface side when the core material is formed.
- a fiber assembly using fibers having high temperature resistance is arranged on the surface side as a vacuum heat insulating material, so that a fiber assembly using fibers having high temperature resistance (heat resistance) is used. If the vacuum heat insulating material is installed so that the body is arranged on the high temperature part side of the device, the device having the high temperature part can be insulated.
- An expected fiber for example, polystyrene which is an organic fiber, glass fiber which is an inorganic fiber, etc.
- polystyrene which is an organic fiber, glass fiber which is an inorganic fiber, etc.
- glass fibers that are inorganic fibers are used. Glass fiber is mixed with urethane waste and is used for thermal recycling. Glass fiber is not recyclable because it reduces combustion efficiency and becomes a residue.
- An organic fiber such as LCP may be used.
- glass fiber Even when environmental problems and adverse effects on the human body are considered, glass fiber is hard and brittle, so dust may scatter when adhering to the skin or mucous membrane of workers when vacuum insulation materials are manufactured or disassembled. Needless to say, it is better to use organic fibers, because the handling and workability are problems.
- Core materials 5 and 550 each having a cut portion with an end face cut at a predetermined length or width, and a core material 5 having a laminated structure of fiber assemblies 1 in which organic fibers 2 are formed in a sheet shape.
- 550 is housed inside, and has a seal portion in a range larger than the core materials 5 and 550 by the seal length, and includes a gas barrier outer packaging material 4 that seals in a state where the inside is decompressed, and includes an organic fiber 2
- a continuous fiber having a length equal to or more than the length L or width H of the core materials 5 and 550 is used, and the remaining fibers generated by cutting are prevented from protruding from the cut portion.
- the cut portion of the fiber assembly 1 which is a non-woven sheet (for example, the cut portion of the end face of the sheet, the cut portion of the hole processing, the cut portion of the notch processing portion, etc.)
- the remaining fibers generated Out it can be suppressed to come out, do not occur protrusion, etc. of the remaining fiber generated by cutting of the cut portion that occurs when using the short fiber for the core material. Therefore, when the core material is inserted into the outer packaging material and sealed, the sealing performance is not impaired by the remaining fibers protruding.
- the core material 550 includes the fiber assembly 1, the continuous sheet-like fiber assembly 1J, the first (organic) fiber assembly 1K, and the second (organic) fiber assembly 1H continuous from the inside toward the outside.
- the fiber assembly 1, the continuous sheet-like fiber assembly 1J, the first (organic) fiber assembly 1K, and the second (organic) fiber assembly 1H are bent portions. Since it is configured as a folded flat plate, it is not necessary to stack non-woven sheets (fiber assemblies) cut into a predetermined size (width or length) one by one, and it is easy with inexpensive manufacturing equipment.
- the core material 5 can be manufactured at low cost.
- the core members 5 and 550 are made of the fiber assembly 1, the continuous sheet-shaped fiber assembly 1J, the first (organic) fiber assembly 1K, and the second (organic) fiber assembly 1H.
- 551Je is positioned in the vicinity of the bent end portion 5f (bent portion), the winding end portion 1Je is not positioned on the flat plate portion 5g of the core material 5, so that the flat plate portion 5g does not have a step, and the appearance is good.
- the step does not obstruct the urethane flow. Accordingly, it is possible to suppress a decrease in heat insulation performance due to insufficient flow of urethane.
- the outer packaging material 4 includes an opening 4a into which the core materials 5 and 550 are inserted, and the winding end portions 1Je and 551Je of the fiber assembly 1 (for example, organic fibers) are bent end portions having two in the length direction.
- the core material 5 is wrapped from the other bent end portion 5fa (bending portion) side where the winding end ends 1Je and 551Je are not located.
- the core material 5 550 is inserted from the opening 4 a of the outer packaging material 4
- the core material 5 550 is not caught by the opening 4 a, and the core material 5 550 is not included in the outer packaging.
- the material can be smoothly inserted into the material 4, the insertability can be greatly improved, and the vacuum heat insulating materials 7 and 750 can be manufactured in a short time.
- the outer packaging material 4 includes an opening 4a into which the core materials 5 and 550 are inserted, and when the winding end portions 1Je and 551Je of the fiber assembly 1 are not positioned in the vicinity of the bent end portion 5f, fibers
- the core material 5 is inserted into the outer packaging material 4 from the bent end portion 5fa side on the upstream side in the winding direction (counter winding direction side) of the fiber assembly 1 with respect to the position of the winding end ends 1Je and 551Je of the assembly 1.
- the core material 5 550 is inserted from the opening 4 a of the outer packaging material 4
- the core material 5 550 is not caught in the opening 4 a, and the core material 5 550 is smoothly inserted into the outer packaging material 4.
- the insertability can be greatly improved, and the vacuum heat insulating materials 7 and 750 can be manufactured in a short time.
- the fiber assembly 1 which has the end surface 1a by which the width direction end surface was cut so that it may become predetermined
- the end surface 1a is within a range in which the core material 5,550 having a laminated structure wound and the core material 5,550 are accommodated therein and larger than the end surface 1a of the core material 5,550 by the seal length.
- the sealing performance is not impaired by the remaining fibers protruding.
- the core material 5550 of the vacuum heat insulating material 7 750 is formed of organic fibers at the time of recycling, even if it is mixed with urethane scraps and subjected to thermal recycling, the combustion efficiency is not reduced, and the residue Since generation can be suppressed, equipment such as a refrigerator, a water heater, an electric water heater, a refrigeration / air conditioner, etc., which is excellent in recyclability is obtained.
- Comparative Example 1 a cotton-like polyester having a diameter substantially equal to the fiber diameter (about 15 ⁇ m) of Examples 1 to 4 using the fiber assembly 1 of the present embodiment is used as a core material, and the above-described manufacturing method is used.
- a vacuum heat insulating material 7 was produced in the same manner as in Examples 1 to 4.
- the manufactured Examples 1 to 4 and Comparative Example 1 (both vacuum heat insulating materials 7) were measured using a thermal conductivity meter “Auto ⁇ HC-073 (manufactured by Eihiro Seiki Co., Ltd.)” at an upper temperature of 37.7 ° C.
- the thermal conductivity at a temperature difference of 10.0 ° C. was measured.
- the measurement is carried out after a vacuuming step, and then left for about one day until the gas or moisture in the outer packaging material is adsorbed by the adsorbent 6 and the thermal conductivity of the vacuum heat insulating material (inside the outer packaging material) is stabilized. It was measured.
- the thickness of one fiber assembly 1 is a value obtained by subtracting twice the thickness of the outer packaging material 4 from the thickness of the vacuum heat insulating material 7 and then dividing the result by the number of laminated layers.
- the average fiber diameter was an average value of 100 measured values measured using a microscope.
- Table 1 shows the result of dividing the thickness of one piece after evacuation by the average fiber diameter.
- FIG. 20 shows the first embodiment, and is a correlation diagram for explaining the heat insulation performance of the vacuum heat insulating materials 7 and 750.
- the horizontal axis in FIG. 20 is a numerical value obtained by dividing the thickness of the fiber assembly 1 by the average fiber diameter, and the vertical axis is the heat insulation performance ratio.
- the heat insulation performance ratio was obtained by dividing the thermal conductivity of Comparative Example 1 by the thermal conductivity of Examples 1 to 4, respectively (the thermal conductivity of Examples 1 to 4 was divided by the thermal conductivity of the Comparative Example). The same as the reciprocal of the value). That is, this heat insulation performance ratio indicates that the larger the numerical value, the better the heat insulation performance.
- the thickness of the fiber assembly 1 is preferably 1 to 18 times the average fiber diameter.
- the thickness of the fiber assembly 1 is 8 times or less the fiber diameter, the heat insulation performance is abruptly (extremely) improved. Therefore, the thickness of the fiber assembly 1 is more preferably 1 to 8 times the average fiber diameter.
- the average fiber diameter is preferably at least three times the thickness of the fiber assembly 1.
- the thickness of the fiber assembly 1 is less than three times the average fiber diameter, the productivity of the fiber assembly 1 is deteriorated, and the line speed during production must be extremely slowed, and the production efficiency is extremely reduced. Therefore, the thickness of the fiber assembly 1 is preferably at least three times the average fiber diameter.
- the fiber assembly 1 manufactured so that the thickness of the fiber assembly 1 is 1 to 18 times the average fiber diameter is used for the core materials 5 and 550 of the vacuum heat insulating materials 7 and 750.
- the heat insulation performance is improved as compared with the case where cotton-like fibers are used for the core material.
- the fiber assembly 1 manufactured so that the thickness of the fiber assembly 1 is 1 to 8 times the average fiber diameter is used for the core materials 5 and 550 of the vacuum heat insulating materials 7 and 750, Furthermore, the heat insulation performance is improved.
- the fiber assembly 1 manufactured so that the thickness of the fiber assembly 1 is 3 to 18 times the average fiber diameter (preferably 3 to 8 times the average fiber diameter) is vacuum-insulated. If used for the core material 5,550 of 7,750, in addition to the effect of improving the heat insulation performance, the productivity is improved, the production cost can be reduced, the vacuum heat insulating material 7 having high performance and high reliability at low cost. Is obtained.
- FIG. 21 is a diagram showing the first embodiment, and is a schematic view showing, for example, an enlarged vertical cross-sectional configuration of the core material 5 used for the vacuum heat insulating material 7. Based on FIG. 21, the structure of the core material 5 is demonstrated in detail.
- the core material 5 is laminated, for example, with each layer of the fiber assembly 1 being oriented in one direction so that the organic fibers 2 do not overlap in the thickness direction of the sheet-like nonwoven fabric.
- Each layer is a case where the organic fibers 2 are stacked so as to be substantially orthogonal.
- fiber assemblies 1 formed by aligning and arranging spun fibers in one direction so that the fibers do not overlap each other are alternately arranged so that the fiber directions are substantially orthogonal to each other. This is a case where they are formed by lamination.
- d is the average fiber diameter
- P is the average fiber spacing (average fiber distance, fiber-to-fiber spacing).
- Each layer of the fiber assembly 1 may be manufactured by splitting the film after stretching and molecular orientation. If such a method is used, when the film is torn, it is possible to leave the connecting portion between the fibers partially without completely separating the fibers.
- the fiber assembly 1 can be manufactured by stretching the sheet after splitting in a direction substantially perpendicular to the fiber direction so that there is a space P between the fibers. Thereby, the handleability of the core material 5 is improved. In addition, it is good to use polyester etc. for the material of the fiber which comprises the fiber assembly 1, for example.
- the obtained core material 5 is inserted into the outer packaging material 4 of the plastic laminate film.
- the outer packaging material 4 in which the core material 5 is inserted is dried at a temperature of 100 ° C. for about 5 hours.
- about 5 (g) of CaO (adsorbent 6) contained in the non-woven bag is placed in the outer packaging material 4, and then the outer packaging material 4 containing the core material 5 and the adsorbent 6 is set in the vacuum chamber.
- the vacuum is evacuated to about 3 Pa in the vacuum chamber, and the opening is heat sealed in the vacuum chamber as it is to complete the vacuum heat insulating material 7 as a vacuum heat insulating panel.
- FIG. 22 and 23 are diagrams showing the first embodiment
- FIG. 22 is a diagram showing a measurement result of the thermal conductivity of the vacuum heat insulating material 7
- FIG. 23 is a graph showing the measurement result shown in FIG. . Based on FIG.22 and FIG.23, the measurement result of the heat conductivity performed as heat insulation performance evaluation of the vacuum heat insulating material 7 obtained by the said method is demonstrated.
- FIG. 22 and 23 show the relationship between the average fiber spacing (P) in each layer / the average fiber diameter (d) of the vacuum heat insulating material 7 and the thermal conductivity [W / mK].
- FIG. 22 also shows the thermal conductivity of the vacuum heat insulating material 7 using cotton-like fibers (for example, polyester fibers) as the core material 5 as a comparative example.
- the horizontal axis represents average fiber spacing / average fiber diameter (P / d), and the vertical axis represents thermal conductivity [W / mK].
- the average fiber spacing (P) is in the range of 2.5 times to 8.5 times the average fiber diameter (d) (P / d is 2.5 times or more and 8.5 times).
- the heat conductivity of the vacuum heat insulating material 7 according to the first embodiment is higher than the heat conductivity 0.0030 [W / mK] of the vacuum heat insulating material 7 using the cotton-like core material as a comparative example. The rate is small. That is, it turns out that the vacuum heat insulating material 7 which concerns on this Embodiment 1 is excellent in the heat insulation performance.
- the vacuum heat insulating material 7 using the cotton-like fiber of the comparative example as the core material 5 the fiber is irregularly arranged, so that the fiber is directed in the thickness direction which is the heat transfer direction (heat insulation direction). is there. Heat is transmitted from the portion where the fibers are directed in the thickness direction and leaks, so that the heat insulating performance is deteriorated.
- the vacuum heat insulating material 7 according to the first embodiment transfers heat only in point contact via a contact point with another fiber in the thickness direction that is the heat transfer direction. The effect of resistance is obtained.
- the vacuum heat insulating material 7 according to the first embodiment has less leakage of heat in the thickness direction, which is the heat transfer direction, and can reduce the solid heat transfer transmitted through the core material 5 accordingly. Therefore, the vacuum heat insulating material 7 according to the first embodiment can reduce the thermal conductivity, that is, the heat insulating performance is improved.
- the fibers of the vacuum heat insulating material 7 according to the first embodiment are denser than those of the comparative example in which the cotton-like fibers are used for the core material 5, and the heat transfer path is shortened. It is also considered that the solid volume fraction in the vacuum heat insulating material 7 has increased.
- the volume of the solid in the vacuum heat insulating material 7 is increased. Since the fraction can be reduced and the heat transfer distance can be increased, it can be understood from the fact that the thermal conductivity has gradually decreased.
- the thermal conductivity is almost 0.0020 [W / mK]. It does not change with the degree.
- the thermal conductivity is equivalent to about 0.0020 [W / mK], which is the thermal conductivity of a conventional general vacuum heat insulating material 7 using glass fiber as the core material 5, and exhibits excellent heat insulating performance. it can.
- the thermal conductivity increases rapidly.
- the heat transfer performance of the vacuum heat insulating material 7 according to the first embodiment is rapidly deteriorated. This is because, as the average fiber spacing (P) is increased, the deflection of the fibers with the contact point between the fibers as a fulcrum increases, the fibers are directed in the thickness direction, and the fibers are in contact with each other across the layers. This is presumed to have occurred.
- the average fiber interval (P) is in the range of 2.5 to 8.5 times the average fiber diameter (d) (P / d is 2.5 times).
- the thermal conductivity is less than 0.0030 [W / mK] of the vacuum heat insulating materials 7 and 750 using the conventional cotton-like core material, that is, the heat insulating performance. Excellent.
- the vacuum heat insulating material 7 which concerns on this Embodiment 1 is used in the range whose average fiber space
- the average fiber spacing (P) is set to 2.5 times or more and 8.5 times or less of the average fiber diameter (d), the vacuum heat insulating material 7 having excellent heat insulating performance can be obtained.
- the average fiber spacing (P) is set to be 4 times or more and less than 7 times the average fiber diameter (d), further improvement in heat insulation performance can be expected.
- the long fiber nonwoven fabric that is the fiber assembly 1 is obtained by collecting continuous fibers melted by an extruder and extruded from a spinning nozzle on a conveyor, feeding the conveyor at an arbitrary speed, By performing the embossing process 110 for attaching the dot-shaped heat welded portion, the fibers constituting the sheet are not easily scattered or peeled off, so that the handling property of the nonwoven fabric sheet (fiber assembly 1) is improved and the handling strength is improved.
- a long-fiber non-woven fabric that can be wound up while securing the above is obtained.
- FIG. 24 shows the first embodiment, and is a cross-sectional view of a nonwoven fabric that is the fiber assembly 1 of the vacuum heat insulating material 7.
- the sheet-like fiber assembly 1 is appropriately provided with an embossing 110 and thermally welded.
- the embossing 110 is provided penetrating from the front surface to the back surface of the sheet-like fiber assembly 1 (penetrating in the thickness direction of the sheet).
- the manufacturing conditions such as the speed of the collecting conveyor are adjusted so that the heat-welded part of the embossing 110 penetrates from the front surface to the back surface, that is, in the thickness direction.
- the long fiber nonwoven fabric which is the fiber assembly 1 can be manufactured by changing the weight of the fibers.
- the embossing 110 needs to have a size of about 0.3 mm or more (diameter in the case of a substantially circular shape, length of one side in the case of a polygon) so that heat welding can be reliably performed on the sheet. is there. Further, the size of the embossing 110 is preferably about 5 mm or less so that heat conduction does not occur through the embossing 110 and the heat insulating performance is not lowered.
- the embossing 110 when the embossing 110 is circular, it is better to set the diameter to be not less than 0.3 mm and not more than 5 mm, and in the case of a polygon, one side should be set to be not less than 0.3 mm and not more than 5 mm, preferably 0.5 mm or more. 1.5 mm or less is good.
- the embossing 110 is set to be approximately circular and has a diameter of about 0.5 to 1 mm so that the heat insulation performance is improved and the heat welding can be reliably performed.
- the ratio of the embossing 110 to the sheet was about 8% with little decrease in heat insulation performance.
- the average fiber diameter may be measured by measuring several to several hundreds (for example, ten) using a microscope and using the average value.
- the weight per unit area (fiber weight per 1 m 2 (g)) may be obtained as a weight per unit area of one sheet by measuring the area and weight of one sheet.
- 300 sheets of the obtained nonwoven fabrics are laminated to form the core material 5, inserted into the outer packaging material 4 of the aluminum foil laminate film, and dried at about 100 ° C. for about 5 hours.
- an adsorbent 6 such as a moisture adsorbent (CaO) or a gas adsorbent contained in a breathable bag is placed in the outer packaging material 4 containing the core material 5 and set in a chamber-type vacuum packaging machine. And evacuated. Vacuuming was performed until the inside of the chamber reached 3 Pa, and the opening was heat sealed in the vacuum chamber to produce 7,750 vacuum heat insulating materials as vacuum heat insulating panels.
- FIGS. 25 and 26 are diagrams showing the first embodiment.
- FIG. 25 is a diagram showing the correlation between the weight basis weight of the vacuum heat insulating material 7 and the thermal conductivity.
- FIG. 26 is the weight basis weight and heat conduction of the vacuum heat insulating materials 7 and 750. It is a figure showing the correlation of a rate.
- the vertical axis represents the thermal conductivity [W / mK], and the horizontal axis represents the weight per unit area [g / m 2 ].
- the basis weight is represented by the fabric weight [g / m 2] which indicates the weight (g) of fiber per 1 m 2.
- specific gravity of the fibers can also be expressed in volumetric basis weight [cc / m 2] that indicates the volume occupied by the fibers per 1m 2 (cc).
- the fiber volume may be obtained by measuring the weight and converting from the specific gravity (for example, the own weight is 1.34 in the case of PET).
- FIG. 25 shows the relationship between the weight per unit area and the thermal conductivity when the organic fibers of Examples 5 to 8 shown in Table 2 are used as the core material 5550.
- the thermal conductivity 0.003 [W / mK] of the vacuum heat insulating material 7 when using a conventional cotton-like core material 5,550 with a weight per unit area of 70 [g / m 2 ] or less When the nonwoven fabric using the fiber assembly 1 of the present embodiment is the core material 5550, the thermal conductivity is equivalent. Therefore, if the weight basis weight is 70 [g / m 2 ] or less, the thermal conductivity of the vacuum heat insulating material 7 when the conventional cotton-like core material 5 is used is 0.003 [W / mK]. It was found that the thermal conductivity of the vacuum heat insulating material 7 according to Embodiment 1 can be reduced, that is, the heat insulating performance is improved.
- the upper limit of the weight per unit area is set to 70 [g / m 2 in consideration of manufacturing variation and the like within a range smaller than the thermal conductivity 0.003 [W / mK] in the case of the cotton-like core material. ] (Below). Therefore, the heat insulating performance is not impaired, and the vacuum heat insulating materials 7 and 750 that are easy to manufacture and excellent in recyclability are obtained.
- the orientation direction of the fibers tends to be in the thickness direction, which is the heat insulation direction, and the heat-welded portion of the embossing 110 becomes a heat transfer path in the thickness direction. This is probably because the heat-welded part of the embossing 110 is increased and the heat insulation performance is lowered.
- the thermal conductivity suddenly becomes higher than about 0.002 [W / m K], so the weight basis weight is 26 [g / m 2].
- the following is preferable. If the basis weight is 26 [g / m 2 ] or less, the thermal conductivity is 0.002 [W / mK], which is the thermal conductivity of a conventional general vacuum heat insulating material 7 using glass fiber as the core material 5. Since it can be equal to or less than the degree, the vacuum heat insulating material 7 with high heat insulating performance is obtained.
- the fiber in a nonwoven fabric becomes easy to face in a surface direction (length direction or width direction), and the influence of a heat welding part can also be made small, so that fabric weight is made small.
- the basis weight is too low, it becomes difficult to manufacture, and the strength is weakened due to factors such as a decrease in the uniformity of the nonwoven fabric. If the basis weight is lower than 4.7 [g / m 2 ], the nonwoven fabric is wound as a nonwoven fabric. In some cases, the fibers cannot be removed and the fibers are cut off.
- the fabric weight of a nonwoven fabric is 4.7 [g / m ⁇ 2 >] or more and 70 [g / m 2 ] or less
- the vacuum heat insulating material 7 with good handling properties of the core material 5 and high heat insulating performance can be obtained.
- the basis weight is 4.7 [g / m 2 ] or more and 26 [g / m 2 ] or less, further improvement of the heat insulation performance can be expected.
- the heat insulation box and the heat insulation wall using the vacuum heat insulating material 7 having a low thermal conductivity and a high heat insulation performance as described in the present embodiment should be reduced in thickness by the amount of the good heat insulation performance. Can do. Therefore, compared with the conventional heat insulation box with the same external shape, the internal volume can be increased, so that a device such as a large-capacity refrigerator can be provided. Further, if the internal volume is made the same as the conventional one, the outer shape can be reduced, so that a small and compact device such as a refrigerator can be obtained.
- FIG. 26 shows the correlation between the basis weight and the thermal conductivity of the organic fibers 2 of Examples 5 to 9 shown in Table 3 used as the core materials 5 and 550.
- the horizontal axis represents the weight per unit area
- the vertical axis represents the thermal conductivity.
- the weight per unit area is 70 [g / m 2 ] or less and 140 [g / m 2 ] or more
- the thermal conductivity is smaller than 0.0030 [W / mK] which is the thermal conductivity of the conventional cotton-like core material. It was found that the heat insulation performance was improved.
- the higher the weight per unit area is 140 [g / m 2 ] or more, the smaller the thermal conductivity and the better the heat insulation performance. It is considered that the fibers are easily oriented in the direction perpendicular to the direction (sheet winding direction, sheet length direction, width direction).
- the thickness per sheet increases, and the sheet is less likely to bend when laminated, and the direction perpendicular to the heat transfer direction (sheet winding direction, sheet length direction, The fibers are easily oriented in the width direction. Therefore, the heat conductivity in the heat transfer direction is reduced, and the heat insulation performance is considered to be improved.
- the heat insulation performance improves as the weight per unit area becomes 70 [g / m 2 ] or less, which is a predetermined value.
- the thickness per sheet decreases and the fibers are oriented in the heat transfer direction (thickness direction).
- the fibers are more easily oriented in the direction perpendicular to the heat transfer direction (sheet winding direction, sheet length direction, width direction), the heat conductivity in the heat transfer direction is reduced, and the heat insulation performance is improved. This seems to be because the effect has increased.
- the weight basis weight of the nonwoven fabric is not less than 4.7 [g / m 2 ] and not less than 70 [g]. / M 2 ] or less, the vacuum heat insulating material 7 with good handling properties of the core material and high heat insulating performance can be obtained.
- the basis weight is 4.7 [g / m 2 ] or more and 26 [g / m 2 ] or less, further improvement of the heat insulation performance can be expected.
- the weight per unit area of the nonwoven fabric is set to 140 [g / m 2 ] or more and 198 [g / m 2 ] or less, the vacuum heat insulating material 7 with good handling property of the core material 5 and high heat insulating performance can be obtained.
- the weight per unit area of 198 [g / m 2 ] or less is the measurement result of Example 9 in Table 3. Up to this point, it has been confirmed by measurement that the heat insulation performance is better than the conventional cotton-like core material. Because.
- the heat insulation box and the heat insulation wall using the vacuum heat insulating material 7 having a low thermal conductivity and a high heat insulation performance as described in the present embodiment should be reduced in thickness by the amount of the good heat insulation performance. Can do. Therefore, compared with the conventional heat insulation box with the same external shape, the internal volume can be increased, and thus a device such as a large-capacity refrigerator can be provided. Further, if the internal volume is made the same as the conventional one, the outer shape can be reduced, so that a small and compact device such as a refrigerator can be obtained.
- continuous fibers having a length equal to or longer than the minimum length of the sheet such as the length direction of the sheet or the width direction are used as the long fibers, and the length direction of the sheet or the width direction.
- the heat insulation performance is improved as compared with the case where short fibers shorter than the shortest length of the sheet are used.
- the continuous long fiber is more preferable. It is conceivable that the fiber breaks in the process of manufacturing the fiber assembly 1. In addition, it is conceivable that fibers having a short fiber length that do not continue beyond the minimum length of the sheet such as the sheet length direction or the width direction are also mixed.
- seat is contained 50% or more, heat insulation performance will improve.
- the ratio of the long fibers continuous to the minimum length of the sheet such as the length direction or width direction of the sheet to the sheet is 50% or more (preferably 70% or more).
- the fiber assembly 1 constituted by is used.
- the fibers are easily oriented in the surface direction (winding direction, length direction, width direction) substantially perpendicular to the heat insulating direction (thickness direction). That is, since the solid heat transfer path in the vacuum heat insulating materials 7 and 750 in the heat insulating direction (thickness direction) can be lengthened, the heat insulating performance is improved. Furthermore, since the basis weight is high, the sheet is thick, so that the sheet is difficult to bend at the time of lamination, and the fibers are easily oriented in the direction perpendicular to the heat transfer direction (sheet winding direction, sheet length direction, width direction). Therefore, it is considered that the heat conductivity in the heat transfer direction is reduced and the heat insulation performance is improved. Therefore, the vacuum heat insulating materials 7 and 750 using the fiber assembly 1 formed from the organic fibers 2 continuous in the length direction instead of the short fibers as the core material 5 use the short fibers as the core material 5. Better thermal insulation performance.
- the nonwoven fabric (fiber assembly 1) was manufactured by changing the basis weight by adjusting the temperature of the heat roller and the clearance between the heat rollers so that the heat welded portion of the embossing 110 did not penetrate in the thickness direction.
- the temperature of the heat roller was set to 180 ° C.
- the clearance between the heat rollers was set to be 1 ⁇ 2 of the thickness of the nonwoven fabric before heat welding.
- FIG. 27 shows the first embodiment, and is a cross-sectional view of a nonwoven fabric that is the fiber assembly 1 of the vacuum heat insulating material 7.
- the sheet-like fiber assembly 1 is appropriately heat-welded by providing an embossing 110 only on the front surface (front surface and back surface) without penetrating in the thickness direction.
- the “front surface (front surface and back surface)” means “at least one of the front surface and the back surface”.
- the obtained non-woven fabric (organic fiber aggregate) was manufactured as a vacuum heat insulating material 7,750 in the same manner as described above. And what the heat welding part of the embossing 110 does not penetrate in the thickness direction (not provided continuously in the thickness direction) and what penetrated (what was provided continuously in the thickness direction, comparative example) The thermal insulation performance was compared with Here, the nonwoven fabric was manufactured so that the embossing 110 was subjected to the same embossing 110 size and the number of embossing 110 provided in the same area.
- FIG. 28 is a diagram showing the first embodiment and is a diagram showing the relationship between the weight per unit area of the vacuum heat insulating materials 7 and 750 and the thermal conductivity. Also in FIG. 28, the vertical axis represents the thermal conductivity [W / mK] and the horizontal axis represents the weight per unit area [g / m 2 ], as in FIG. In FIG. 28, the solid line indicates the one through which the embossing 110 has penetrated (shown by the solid line in FIG. 25). Moreover, what was shown with the dotted line represents what the embossing 110 does not penetrate in the thickness direction of one sheet (only the surface).
- the structure in which the heat-welded portion of the embossing 110 is not penetrated in the thickness direction of the nonwoven fabric has a thermal conductivity of 0.002 [up to about 50 [g / m 2 ].
- W / mK] is almost constant and heat insulation performance is good.
- a structure in which the heat-welded portion of the embossing 110 indicated by the dotted line does not penetrate in the thickness direction of the nonwoven fabric (fiber assembly 1) is suddenly conducted when the weight per unit area exceeds about 50 [g / m 2 ].
- the thermal conductivity of the cotton-like fiber core material is 0.003 [up to about 130 [g / m 2 ] (the thermal conductivity is about 0.0029 [W / mK]). W / mK] is not exceeded, so that the vacuum heat insulating material 7 having better heat insulating performance than conventional cotton fibers can be obtained.
- the thermal conductivity is about 0.0028 [W / mK].
- the weight basis weight is about 4.7 [g / m 2 ] or more and about 130 [g / m 2 ] or less.
- the thermal conductivity can be made 0.003 [W / mK] or less of the conventional cotton-like core material. Therefore, the required heat insulation performance can be ensured, and it is easy to manufacture, and a recyclable nonwoven fabric, a vacuum heat insulating material 7, a heat insulating box, a refrigerator, a water heater or a jar pot using the vacuum heat insulating material 7 can be obtained. .
- the conventional general vacuum heat insulation in which the thermal conductivity is the glass fiber 5550.
- the thermal conductivity of the materials 7 and 750 can be made equal to 0.002 [W / mK]. Therefore, non-woven fabric, vacuum heat insulating material 7,750, heat insulating box, heat insulating box, vacuum heat insulating material 7, 750 using a heat insulating performance, high efficiency, easy to manufacture and good recyclability, etc. Can be obtained.
- the weight basis weight is set to about 4.7 [g / m 2 ] or more and about 70 [g / m 2 ] or less.
- the thermal conductivity can be made 0.003 [W / mK] or less of the conventional cotton-like core material. Therefore, it is possible to secure the necessary heat insulation performance, and it is easy to manufacture and has good recyclability, such as a non-woven fabric, vacuum heat insulating materials 7, 750, heat insulating boxes, refrigerators using hot water insulating materials 7, 750, water heaters, jar pots, etc. Equipment is obtained.
- the conventional general vacuum heat insulating material 7 having a glass fiber as a core material is used. Since the thermal conductivity of 750 can be made equal to 0.002 [W / mK], the non-woven fabric and vacuum heat insulating materials 7 and 750 have excellent heat insulation performance, high efficiency, easy manufacturing, and good recyclability. , A refrigerator, a water heater, a jar pot, and the like using the heat insulating box and the vacuum heat insulating material 7,750 are obtained.
- the thickness of one nonwoven fabric sheet is increased by increasing the basis weight within the range of the basis weight described above. it can.
- the number of laminated nonwoven fabrics that are the fiber assemblies 1 for obtaining the vacuum heat insulating materials 7 and 750 having a desired thickness (required predetermined thickness) can be reduced, and thus productivity is improved.
- the weight basis weight is in the range of 4.7 [g / m 2 ] to 26 [g / m 2 ].
- the heat welded portion of the embossing 110 penetrates in the thickness direction of the sheet-like fiber assembly 1.
- the difference in thermal conductivity is small when not penetrating. Therefore, if there is no hindrance to productivity, the use of a low-weight nonwoven fabric, there is almost no difference in thermal insulation performance, regardless of whether the heat-welded part of the embossing 110 penetrates or does not penetrate in the thickness direction of the sheet-like nonwoven fabric. It becomes good without.
- the weight basis weight is set as small as possible in the range of 4.7 [g / m 2 ] to 26 [g / m 2 ], so that the degree of freedom of the embossing 110 increases and the heat insulating performance. Will also be good.
- the basis weight should be as large as possible.
- the heat-welded part of the embossing 110 is prevented from penetrating in the thickness direction of the sheet-like nonwoven fabric, and the thermal conductivity of the cotton-like core material is about 0.003 [W / mK in consideration of manufacturing variations and the like. ]
- the weight basis weight range may be about 4.7 [g / m 2 ] or more and 130 [g / m 2 ] or less.
- the heat insulation box and the heat insulation wall using the vacuum heat insulating materials 7 and 750 of the present embodiment having a low thermal conductivity and a high heat insulation performance as described above reduce the thickness of the box and the wall by the amount of good heat insulation performance. be able to. Therefore, compared with the conventional heat insulation box with the same external shape, the internal volume can be increased, so that a device such as a large-capacity refrigerator can be provided. Further, if the internal volume is made the same as the conventional one, the outer shape can be reduced, so that a small and compact device such as a refrigerator can be obtained.
- the substantial size of the heat-welded part (transmission) Since the heat area is reduced by the amount corresponding to the hole processing, the heat conduction through the heat-welded portion can be reduced, so that the heat insulation performance can be improved.
- the heat insulation performance is improved as compared with the case where the heat-welded portion is not drilled. For example, when the size of the heat-welded portion is approximately 2 mm in diameter, the size of the through hole may be approximately 1 mm in diameter. Since the through-hole is smaller than the size of the heat-welded portion, the organic fiber 2 constituting the fiber assembly 1 can be maintained in a welded state even if the through-hole is opened. is there.
- the organic fibers 2 constituting the organic fiber aggregate 2 are welded to each other in a heat-welded portion such as embossing applied in the thickness direction of the sheet (a degree to which heat-welding can be maintained).
- a heat-welded portion such as embossing applied in the thickness direction of the sheet (a degree to which heat-welding can be maintained).
- a vacuum heat insulating material that can improve the heat insulating performance while maintaining good sheet handling and productivity can be obtained.
- the heat insulation performance can be improved by drilling the heat-welded part.
- the hole processing does not have to be a through hole, and the effect of improving the heat insulation performance can be obtained even with the recess processing.
- the fiber assembly 1 according to the present embodiment will be described with respect to heat insulation performance in the case where heat welding is not performed by the embossing 110 or the like.
- the heat transfer path can be reduced, so that the heat insulating performance is considered to be improved.
- the long-fiber nonwoven fabric that is the fiber assembly 1 is melted with an extruder and extruded from the spinning nozzle on the conveyor. What is necessary is just to collect by collecting and winding up and conveying a conveyor at arbitrary speeds.
- the fiber density of the fiber assembly 1 can be adjusted by adjusting the discharge amount of the molten resin and the speed of the conveyor to produce fiber assemblies 1 having different thicknesses.
- the obtained fiber assembly 1 is cut into, for example, an A4 size, or is continuously wound from the inside to the outside to form the core materials 5 and 550.
- the number of laminated layers is arbitrarily set based on the thickness of the obtained fiber assembly 1 and the thickness of the vacuum heat insulating materials 7 and 750 to be manufactured.
- the organic fiber 2 should have a smaller fiber diameter in terms of heat insulation performance. Theoretically, the fiber diameter is desirably 10 ⁇ m or less.
- the nonwoven fabric sheet which is the fiber assembly 1 does not need to be laminated
- the organic fiber 2 used is a polyester having a diameter of about 10 ⁇ m to 13 ⁇ m.
- the vacuum heat insulating materials 7 and 750 were manufactured in the manufacturing process equivalent to the manufacturing method mentioned above.
- a vacuum heat insulating material 7 made of a sheet-like fiber assembly 1 formed from organic fibers 2 continuous in the longitudinal direction without performing heat-welding in the production process Two samples a and b of 750 were manufactured.
- a vacuum heat insulating material 7 comprising a sheet-like fiber assembly 1 formed from organic fibers 2 continuous in the longitudinal direction, subjected to heat welding treatment in the production process 750 was produced.
- the core materials 5 and 550 were formed in a sheet shape continuous in the longitudinal direction without cutting the fiber assembly 1.
- the manufactured sample a, sample b, and the fiber assembly 1 of the comparative example were measured using a thermal conductivity meter “Auto ⁇ HC-073 (manufactured by Eihiro Seiki Co., Ltd.)” at an upper temperature of 37.7 ° C. and a lower temperature.
- the thermal conductivity at a temperature difference of 10.0 ° C. was measured.
- the measurement is carried out for about one day until the evacuation process is performed and then the gas and moisture in the outer packaging material 4 are adsorbed by the adsorbent 6 and the thermal conductivity of the vacuum heat insulating materials 7 and 750 is stabilized. And measured.
- the average fiber diameter was an average value of 10 measured values measured using a microscope.
- the heat insulation performance by the presence or absence of the heat welding by the embossing 110 was compared with the weight per unit area [g / m ⁇ 2 >].
- the vacuum heat insulating materials 7 and 750 in the case where there is no thermal welding by the embossing 110 were confirmed using two samples having different weights.
- the weight basis weight of the sample without embossing 110 using long fibers is about 70 [g / m 2 ] for sample a and about 924 [g / m 2 ] for sample b.
- the thermal conductivity is 0.0019-0, 0020 [W / mK].
- Sample a and sample b have improved heat insulation performance as compared to the comparative example with embossing 110 using long fibers (see Examples 5 to 9 in Table 3 and FIG. 14). Therefore, it has been found that the heat insulation performance is better in the case where there is no thermal welding by the embossing 110 than in the case where there is thermal welding by the embossing 110.
- the reason for this is considered that the heat path between the organic fibers 2 of the fiber assembly 1 is not welded, and the heat path is shortened accordingly.
- the vacuum heat insulating materials 7 and 750 using the organic fibers 2 of long fibers as the core materials 5 and 550 the heat conductivity is small and the heat insulating performance is low even if the weight per unit weight is extremely high as 924 [g / m 2 ]. It has improved. Therefore, by increasing the weight weight and increasing the thickness of one sheet-like nonwoven fabric, the number of core materials 5 can be reduced, the production speed can be increased, and the productivity can be improved.
- the core material 5, 550 of the vacuum heat insulating material 7, 750 is not heat-welded by the embossing 110, and a fiber assembly using long fibers continuous as the length of the sheet for the core material 5.
- the heat insulating performance is better when the vacuum heat insulating materials 7 and 750 are manufactured at 1.
- the thermal conductivity was measured.
- the thermal conductivity of the vacuum heat insulating materials 7 and 750 in which the organic fiber 2 having a substantially circular cross section having a substantially equal cross-sectional area was used as the core material 5 was also measured.
- the thermal conductivity was 0.0017 [W / m 2 ].
- the heat conductivity of the vacuum heat insulating materials 7 and 750 to which the fiber assembly 1 using the organic fibers 2 having a substantially circular cross section was applied was 0.0020 [W / m 2 ]. Therefore, it was found that the heat insulating performance of the organic fiber 2 having a substantially triangular cross section having a cross-sectional area equivalent to that of the fiber having a substantially circular cross section can be improved rather than using the organic fiber 2 having a substantially circular cross section.
- the fiber assembly 1 constituting the core material 5 receives atmospheric pressure via the outer packaging material 4. Looking at any contact between the organic fibers 2 that are in contact with each other, the organic fiber 2 is also in contact with other fibers. It comes in contact with other fibers, the thermal conductivity increases, and the heat insulation is deteriorated.
- the heat transfer performance has been improved with the modified cross-section because the cross-sectional shape of the organic fiber 2 is made to be a substantially triangular shape having a cross-sectional area substantially equivalent to that of a fiber having a substantially circular cross-section. It is considered that the rigidity is improved compared to the fiber having a substantially circular cross section and the bending of the fiber when subjected to atmospheric pressure is reduced.
- the heat insulating performance is improved when the cross-sectional shape of the organic fiber 2 is not a substantially circular shape but an irregular cross-section (for example, a substantially triangular shape).
- the organic fiber 2 has an irregular cross-sectional shape (for example, a substantially triangular shape or a polygonal shape) having a cross-sectional area substantially equal to that of a fiber having a substantially circular cross-section and a large second moment of section, the vacuum heat insulating material 7 , 750 can be reduced in deformation when subjected to atmospheric pressure, and the volume fraction of the solid in the vacuum heat insulating materials 7, 750 can be reduced, so that the vacuum heat insulating material 7 with improved heat insulating performance can be obtained.
- the cross-sectional shape of the organic fiber 2 before evacuation is a substantially C-shape, and after evacuation, the tube is deformed by pressure and crushed and the C-shaped opening is closed (the C-shaped opening is closed). If the organic fiber 2 is used in such a state that the diameter thereof is substantially equal to the outer diameter of the substantially circular shape, the cross section is pipe-shaped (substantially circular shape with a hollow center) rather than using a fiber having a substantially circular cross section. ) Heat transfer becomes worse and heat insulation performance is improved.
- the air in the hollow part is difficult to escape even if evacuation is performed, and it takes time to evacuate.
- produces, in this Embodiment, the cross-sectional shape of the organic fiber 2 before evacuation is made into the substantially C shape shape which has an opening part, and pressure is applied after evacuation.
- the organic fiber 2 having a C-shaped cross section when used, a hollow pipe shape in which the C-shaped opening is closed by being deformed and crushed by pressure after evacuation (the C-shaped opening is closed).
- the diameter is substantially equal to the outer diameter of the substantially circular shape).
- the ratio of the outer diameter to the inner diameter with the C-shaped opening closed (the inner diameter is 0 when this ratio is 0%, Is a solid circular cross-section with no openings or hollow parts) in the range of 30% to 70%
- the thermal conductivity is as small as 0.0016 to 0.0019 (W / mK), improving the heat insulation performance I found out that Even when the ratio of the outer diameter to the inner diameter was 20% or less and when the ratio was 80% or more, it was confirmed that the thermal conductivity was larger and the heat insulation performance was worse than the case of 30% to 70%.
- the vacuum heat insulating materials 7 and 750 are prepared by the above-described method, and then the thickness of the vacuum heat insulating materials 7 and 750 is changed. Was measured. And after putting in about 60 degreeC thermostat, it heated out for about 11 hours, took out, and measured the thickness of the vacuum heat insulating materials 7 and 750 again.
- FIG. 29 is a diagram showing the first embodiment, in which the fiber assembly 1, the continuous sheet-like fiber assembly 1J, the first (organic) fiber assembly 1K, and the second (organic) constituting the core materials 5 and 550 are shown.
- a correlation diagram showing the relationship between the weight per unit area of the vacuum heat insulating materials 7 and 750 and the compressive strain when the fiber assembly 1H is provided with heat welding.
- the compressive strain rapidly decreases as the weight basis increases from 13 [g / m 2 ] to about 85 [g / m 2 ]. Further, when the weight basis weight increases from about 85 [g / m 2 ] or more, the compression strain decreases slowly as the weight basis weight increases. It can be seen that when the weight per unit area is 110 [g / m 2 ] or more, the compressive strain becomes almost constant and does not change much. That is, when the weight is about 85 [g / m 2 ], the degree of decrease in compression strain changes, and there is an inflection point.
- the thickness of one sheet when the weight per unit area exceeds about 85 [g / m 2 ] (or about 110 [g / m 2 ]), the thickness of one sheet also increases so that the rigidity against compression is obtained, and it is difficult to deform and strain. This is thought to be difficult.
- heat welding increases the contact area between the organic fibers 2, increases heat transfer, and heat conduction from the welded portion may cause a decrease in heat insulation performance. It is better to minimize the contact area. Therefore, the contact area between the organic fibers 2 by heat welding is suppressed to 20% or less (preferably 15% or less, more preferably 8% or less) of the total area (sheet area), so that the compression strain is small and the heat insulation performance is high. Vacuum heat insulating materials 7 and 750 are obtained. It has been confirmed that the thermal conductivity increases when the proportion of heating welding exceeds 20% of the total area (sheet area), and the heat insulation performance deteriorates, so the proportion of heating welding accounts for the total area (sheet area). Is preferably 20% or less.
- the fiber assembly 1 (for example, organic fiber assembly) used for the core materials 5 and 550 of the vacuum heat insulating materials 7 and 750, the continuous sheet-like fiber assembly 1J, and the first (organic) fiber assembly 1K.
- the second (organic) fiber assembly 1H by applying heat welding, the organic fibers 2 are not separated as a fiber assembly, and the proportion occupied by heat welding is 20% or less of the total area (sheet area) ( In order for the fiber assembly 1 not to be separated, the area to be heated and welded is required to be 3% or more of the total area (sheet area), so that the compressive strain is small, so it is difficult to deform and the thermal conductivity is also small.
- the vacuum heat insulating material 7 that can also improve the heat insulating performance is obtained. Furthermore, the compression strain can be further reduced by setting the basis weight to about 85 [g / m 2 ] (or about 110 [g / m 2 ]) or more.
- the weight basis weight of the nonwoven fabric that is the fiber assembly 1 is 85 g / m 2 or more and 198 g / m 2 or less, the thickness of one sheet becomes thick and the distortion becomes difficult, so that rigidity against compression can be obtained, and vacuum It becomes difficult to deform during molding. Therefore, a highly reliable vacuum heat insulating material 7 is obtained without causing shape defects due to deformation.
- FIG. 30 is a diagram showing Embodiment 1, in which the weight per unit area of the vacuum heat insulating material 7 and the number of stacked layers (the thickness of the vacuum heat insulating material 7 is a predetermined thickness, for example, the thickness after evacuation is a predetermined thickness) It is a diagram showing the relationship of the number of layers).
- the upper limit value of the weight per unit weight is not particularly described, but the unit weight per unit number is preferable.
- the weight basis weight is desirably 98 [g / m 2 ] or more from the viewpoint of productivity.
- the weight basis weight is 4.7 [g / m 2 ] or more and 70 [g / m 2 ] or less, or the weight basis weight is 140 [g / m 2 ] or more.
- the following weight is good.
- the weight basis weight is preferably 85 [g / m 2 ] or more, and preferably 110 [g / m 2 ] or more and the basis weight of one laminated sheet or less. Better.
- the compression strain can be kept small while maintaining the heat insulation performance.
- a few highly reliable vacuum heat insulating materials 7 and 750 can be obtained.
- the first core material having a high weight per unit area and the second core material having a low weight per unit area are combined and laminated (for example, the first core member and the second core member are alternately combined)
- the core materials 5 and 550 as a whole can be reduced in distortion, and the same number of materials having a high basis weight are laminated.
- the thickness can be made thinner than the case. Therefore, it is possible to obtain the highly reliable vacuum heat insulating materials 7 and 750 having good heat insulating performance, thin lamination thickness, and less deformation due to strain.
- the required heat insulation performance can be ensured as compared with the case where the same number of materials having a low basis weight are laminated, and a predetermined rigidity is obtained, so that the heat insulation performance is good, the deformation is high performance, and the vacuum insulation material 7 is highly reliable. , 750 is obtained.
- the example of the combination of the first core material and the second core material has been described here, the same effect can be obtained by combining and laminating a plurality of sheet-like core materials 5 and 550 having different basis weights.
- the first fiber aggregate 1K has a high basis weight (for example, a weight basis weight, which is a small range of compression strain, is 110 [g / m 2 ] or more and 198 [g]. / M 2 ] or less), a sheet having a small compression strain is used, and the basis weight of the second fiber assembly 1H is low (for example, the heat insulation performance ratio is 4.7 [g / m 2 ] or more and 70 [g / m 2]. ])), And a single core member 550 is formed by alternately stacking sheets having a slightly large compressive strain.
- a weight basis weight which is a small range of compression strain
- the compression strain is suppressed by the first (organic) fiber assembly 1K having a high basis weight, and the second (organic) fiber assembly 1H having a low basis weight and good heat insulation performance is used to reduce the total amount of the core material 550.
- the thickness can be reduced and it becomes easier to bend. Therefore, the thickness of the vacuum heat insulating material 7, 750 obtained by mixing and laminating a plurality of types of sheets having different thicknesses of one sheet is the same as that of the vacuum heat insulating materials 7, 750 obtained by stacking the same sheet thickness.
- the second fiber assembly 1H having good heat insulation performance is laminated, so that the heat insulation performance of the core members 5 and 550 is improved and the rigidity is reduced, so that bending and the like can be easily performed.
- the first fiber aggregate 1K having a small compressive strain is laminated, the compressive strain is small and the rigidity is high, so that the vacuum heat insulating materials 7 and 750 having good usability and good heat insulating performance can be obtained.
- the plurality of first (organic) fiber assemblies 1Ka to 1Kd arranged adjacently in the width direction are alternately provided with basis weight, compression strength, tensile strength, and the like. Different ones are arranged, and in the second (organic) fiber assembly 1H, a plurality of second (organic) fiber assemblies 1Ha to 1Hd arranged adjacent to each other in the width direction are alternately arranged on the basis weight, compressive strength, The same effect can be obtained even if the different tensile strengths are arranged.
- the first (organic) fiber assemblies 1K are arranged in the width direction of the plurality of first (organic) fiber assemblies 1Ka to 1Kd, and the second (organic) fiber assemblies 1H are arranged in a plurality of second ( The organic) fiber assemblies 1Ha to 1Hd may be arranged in different width directions or the same.
- the core material 5, 550 of the vacuum heat insulating material 7, 750 is not heat-welded by the embossing 110, and the fiber assembly 1 is made of continuous fibers longer than the length of the sheet. Thermal insulation performance is improved. Of course, even when heat welding by embossing 110 is performed, it goes without saying that the heat insulation performance is better if the fiber assembly 1 is made of continuous fibers longer than the length of the sheet.
- FIGS. 31 to 33 are diagrams showing the first embodiment.
- FIG. 31 is a front view of the vacuum heat insulating materials 7 and 750 having openings.
- FIG. 32 is a vacuum heat insulating material when short fibers are used for the core materials 5 and 550.
- FIG. 33 is a view showing the state of the openings of the cores 5 and 550 of the materials 7 and 750, and FIG. It is a figure which shows an example.
- the core material 5 550 whose end face 5 a (1 a) is cut to a predetermined size is smaller than the size of the core material 5 550 and larger than the necessary size in advance.
- a core material opening 51 that penetrates the core materials 5 and 550 such as through holes and notches of a predetermined size is provided.
- the core material 5,550, the organic fiber 2, etc. to be used use the above-described core material 5,550, the organic fiber 2, etc. described in the present embodiment, Excellent heat insulation performance.
- the core materials 5 and 550 are inserted into the outer packaging material 4 and dried and evacuated to seal the sealing portion 45 of the insertion port of the outer packaging material 4 by heat welding or the like. After that, the inside of the core material opening 51 (vacuum heat insulating material opening seal portion 78) such as a through hole and a notch is thermally welded and sealed, and the required seal length is obtained.
- An outer packaging material opening 41 that is a through hole is formed by cutting the vacuum heat insulating material opening portion by a size that is substantially similar to the core material opening portion 51 and smaller than the core material opening portion 51 by a seal allowance of 75 minutes. Thereby, the vacuum heat insulating material openings 71 such as through holes and notches are finally provided in the vacuum heat insulating materials 7 and 750.
- the vacuum heat insulating material opening seal is larger than the size of the core material opening 51 at a position substantially equal to the core material opening 51 of the core material 5 550.
- An outer packaging material opening 41 that is small by a margin of 75 is provided, and the core material 5 550 is inserted into the outer packaging material 4, and the vacuum heat insulating material opening seal portion 78 between the outer packaging material 4 and the core material 5 550 is inserted.
- the sealing portion 45 (insertion portion) of the insertion port of the outer packaging material 4 may be sealed by heat-sealing (for the length of the vacuum heat insulating material opening seal margin 75) and then drying and vacuuming.
- the organic fibers 2 used for the core materials 5 and 550 as in the prior art are short fibers shorter than the length and width of a sheet of a predetermined size (for example, a fiber length of about 5 to 150 mm).
- the core material openings 51 such as through holes and notches are provided in the core materials 5 and 550
- the core material openings 51 such as the through holes and notches are cut (cut) to produce fibers.
- the organic fibers 2 straddling the core material opening 51 are cut from the remaining organic fibers 2a by cutting.
- the organic fibers 2b are separated, the remaining organic fibers 2a remain on the sheet, and the cut organic fibers 2b are removed from the sheet.
- the initial fiber length X short fibers, for example, about 5 to 150 mm
- Shorter length Y Shorter length
- the fiber length Y of the remaining organic fiber 2a remaining in the sheet portion may be extremely shortened.
- the remaining organic fiber 2a since the remaining organic fiber 2a has a short fiber length Y, it cannot be entangled with the existing fiber in the sheet portion, and jumps out to the inner periphery of the core material opening 51 such as a through hole or a notch. there is a possibility.
- the vacuum heat insulating material opening seal margin 75 of the outer packaging material 4 around the core material opening 51 is sealed by heat welding or the like, the frayed residual organic fiber 2a is caught in the vacuum heat insulating material opening seal margin 75 and sealed. Defects may occur and the heat insulation performance may be significantly reduced.
- the fiber length Y (length) of the remaining organic fiber 2a remaining in the fiber assembly 1 (sheet) which is the core material 5 other than the through hole is about 5 mm. If the fiber length is 5 mm, it cannot be entangled with the existing fibers inside the sheet, and may fray around the through hole that is the core material opening 51.
- the fibers that have frayed and jumped out into the through hole portion that is the core material opening 51 jumped out into the vacuum heat insulating material opening seal margin 75 and got stuck. Occurs and the heat insulation performance is significantly reduced.
- the remaining organic fibers 2a that have been cut to shorten the fiber length in the evacuation step are easily ejected by evacuation, and are sucked into the vacuum pump to form a vacuum. The pump may break down.
- the core materials 5 and 550 are cut (cut) into a predetermined size (for example, A4 size).
- the initial fiber length X is equal to or longer than the length of the nonwoven fabric sheet (for example, the long side or the short side length of A4 size). Therefore, even if the core material opening 51 such as a through hole or a notch having a width equal to or less than the width (for example, the length of the short side) of the fiber assembly 1 is cut, the fiber length is long (because it is continuous).
- the remaining organic fiber 2a Since the fiber length Y of the remaining organic fiber 2a remaining on the sheet side other than the cut organic fiber 2b of the portion removed by the cutting even if cut (cut) at the core material opening 51 can be secured long, the remaining organic fiber 2a is a fiber. It does not entangle with the existing fibers inside the assembly 1 and protrude from the core material opening 51.
- the core material opening 51 such as a through hole or a notch is cut. Even if it is provided, the fiber length Y of the remaining organic fiber 2a in the cut portion of the core material opening 51 such as a through hole or notch can be secured long. Therefore, since there is no fiber scrap of the remaining organic fiber 2a remaining in the sheet by cutting around the inside of the cut portion of the core material opening 51 such as a through hole or a notch, there is no seal failure. Vacuum insulation materials 7 and 750 that do not occur and do not deteriorate in heat insulation performance over time, and heat insulation boxes and devices using vacuum insulation materials 7 and 750 are obtained.
- a long fiber for example, a continuous fiber or a fiber having a length equal to or longer than the length of the sheet
- the initial fiber length X is equal to or longer than the length (or width) of the fiber assembly 1 (nonwoven fabric sheet), it penetrates the vacuum heat insulating material 7. Even if the vacuum heat insulating material opening 71 such as a hole or a notch is provided, the vacuum heat insulating materials 7 and 750 that do not cause a sealing failure and hardly deteriorate the heat insulating performance can be obtained.
- the fiber length of the long fibers is that of the remaining organic fibers 2a.
- the fiber length Y is provided with a vacuum heat insulating material opening 71 such as a through hole or notch in the vacuum heat insulating material 7 or 750, the inside (outside) of the core material opening 51 such as the through hole or notch due to fraying or the like It is sufficient if the fiber length is difficult to jump out.
- a fiber length that is sufficiently longer than the core material opening 51 such as a through hole or a notch is preferably longer if it is longer than the diameter of the through hole or the size of the notch, for example, the fiber length of the remaining organic fiber 2a.
- Y is a fiber length that is about 10 mm or more (preferably 15 mm or more) longer than the diameter or notch size of the through hole in which the core material opening 51 is provided, a core material opening 51 such as a through hole or notch is provided.
- the length Y of the remaining organic fiber 2a remaining in the core material 5 other than the core material opening 51 is at least 10 mm or more (preferably 15 mm or more). Since the possibility of popping out near the periphery is reduced, the sealing performance is hardly deteriorated, and the deterioration of the heat insulation performance due to poor sealing can be suppressed.
- this Embodiment demonstrated the case where the core material opening part 51 of the vacuum heat insulating material 7 was cut (cut
- the insertion port 4a of the outer packaging material 4 is sealed.
- the seal portion 45 is sealed by heat welding or the like.
- the initial fiber is equal to or longer than the length and width of the fiber assembly 1 (nonwoven fabric sheet) from which the long fiber (for example, the end surface 5a (or the end surface 1a or the core material opening 51) is cut).
- the fiber length Y of the remaining organic fiber 2a remaining on the sheet after cutting the long fiber preferably the end surface 5a (or the end surface 1a or the core material opening 51) is 10 mm or more (preferably 15 mm or more, more preferably 20 mm or more). Therefore, even if the core material 5 or 550 is cut to produce the core material 5 or the fiber assembly 1 having a predetermined length, the fiber length of the remaining organic fiber 2a is used.
- Y can secure a predetermined length (for example, the fiber length of the remaining organic fiber 2a remaining on the sheet after cutting is 10 mm or more (preferably 15 mm or more, more preferably 20 mm or more)).
- the remaining organic fiber 2a does not protrude from the cut surface of the core material 5 or the fiber assembly 1, a seal failure or the like does not occur, and a highly reliable vacuum that does not deteriorate the heat insulation performance over a long period of time. Insulation 7,750 is obtained.
- the fiber length of the long organic fiber is, for example, an initial fiber in which the fiber length Y of the remaining organic fiber 2a remaining on the sheet after being cut (cut) is 10 mm or more (preferably 15 mm or more, more preferably 20 mm or more). I need it.
- the long fiber is equal to or longer than the length (or width) of the nonwoven sheet, and more preferably, the continuous fiber is continuous from one end to the other end of the length (or width) of the sheet.
- the organic fiber 2 uses long fibers that are continuous in the length direction or width direction of the fiber assembly 1 having a predetermined size and width with the end face cut, the fiber assembly 1 (nonwoven fabric sheet) ) Of the cut portion (for example, the end surface 5a of the sheet end surface of the core material 5 or the fiber assembly 1, the end surface 1a, the core material opening portion 51 of the hole processing, the core material opening portion 51 of the notch processing, etc.) Since the length of the remaining organic fiber 2a can be secured long, the remaining organic fiber generated by cutting from the end surface 5a, the end surface 1a, and the core material opening 51 that occurs when the conventional short fiber is used for the core material 5.
- the seal length of the seal portion 45 and the vacuum heat insulating material opening seal portion 78 is increased in consideration of the protrusion of the remaining organic fiber 2a as in the case of using conventional short fibers. That it is unnecessary, thus sealing portion 45 of the outer cover material 4, since the seal length of the vacuum heat insulating material opening sealed portion 78 can be shortened, it is possible to obtain a vacuum heat insulating material 7 of a low-cost compact. Further, if the size of the outer packaging material 4 is the same, the size of the core material 5 is the same as the length of the protruding portion of the remaining organic fiber 2a (for example, about 1 mm to 10 mm) as compared with the case where conventional short fibers are used. The length (width and width of the sheet) can be increased, and the heat insulation performance is improved because a large area that can be insulated is obtained.
- a portion of the core material opening 51 that is not cut, such as a through hole or a notch, in which the core materials 5 and 550 are cut (for example, the portion to be cut is the core material opening 51, and the core).
- a heat welding part such as embossing 110 is provided continuously around the periphery of the core material opening 51) or at a predetermined interval. In this case, the protrusion of the remaining organic fiber 2a can be suppressed.
- disconnected is the end surface of the fiber assembly 1, it continues not to the part to be cut
- a heat-welded part such as embossing 110
- the vicinity of the cut portion sticks due to the heat-welding by embossing 110 or the like. Since the organic fibers 2 are not easily separated from each other, the protrusion of the remaining organic fibers 2a can be suppressed.
- the heat-welded part by embossing 110 or the like may be provided only in the vicinity of the cut part, but it is not necessary to concentrate it in the vicinity of the cut part, and a plurality of heat-welded parts are provided in the entire sheet-like fiber assembly 1 at a predetermined interval. Even if it does, an effect is acquired.
- long fibers having a continuous fiber length that is equal to or longer than the shortest length of the sheet (fiber assembly 1) such as the sheet length direction or the width direction it is preferable to use long fibers having a continuous fiber length that is equal to or longer than the shortest length of the sheet (fiber assembly 1) such as the sheet length direction or the width direction. It has been explained that the heat insulation performance is improved compared to the case where short fibers shorter than the shortest length of the sheet such as the length direction or the width direction are used, and it is preferable to use continuous long fibers. It is conceivable that the fibers are cut off in the course of the production of 1, and fibers that are not continuous beyond the minimum length of the sheet such as the length direction or width direction of the sheet may also be mixed.
- the heat insulating performance is improved. It is possible to improve and suppress a decrease in sealing failure. (If the ratio of the continuous fibers over the shortest length of the sheet such as the length direction of the sheet or the width direction to the total fibers forming the sheet is 55% or more, the occurrence rate of sealing failure is short fibers. In this embodiment, the ratio is set to 60% or more in consideration of variations and the like.) Therefore, in this embodiment, the sheet length is increased.
- a fiber assembly 1 composed of long fibers having a ratio of 60% or more (preferably 70% or more) of long fibers continuous over the minimum length of the sheet in the length direction or the width direction is used. I have to.
- FIG. 34 is a diagram showing the first embodiment, illustrating the heat insulation box, and is a side sectional view in front view schematically showing an application example to a refrigerator.
- the vacuum heat insulating materials 7, 750, the core material 5, 550, the fiber assembly 1 and the like used here are the above-described vacuum heat insulating materials 7, 750, the core material 5, 550, and the fiber assembly 1 described in the present embodiment. Etc. are used, so heat insulation performance is excellent.
- the refrigerator 100 includes an outer box 9, an inner box 10 disposed inside the outer box 9, vacuum heat insulating materials 7 and 750 disposed in a gap between the outer box 9 and the inner box 10, and It has a foam heat insulating material 11 such as polyurethane foam, and a refrigeration unit (not shown) having a compressor or the like for supplying cold heat into the inner box 10.
- the heat insulation box formed by the outer box 9 and the inner box 10 has an opening formed on the front surface, and an opening / closing door is installed in the opening (both not shown).
- the vacuum heat insulating material 7 is arranged away from the coated steel plate of the outer box 9 by using a spacer 8 which is a resin molded product.
- the spacer 8 is appropriately provided with a hole for not inhibiting the flow so that no void remains in the polyurethane foam injected into the heat insulating wall in a later step.
- the refrigerator 100 has a heat insulating wall 12 formed by the vacuum heat insulating materials 7 and 750, the spacer 8, and the foam heat insulating material 11.
- the range in which the heat insulating wall 12 including the vacuum heat insulating material 7 is disposed is not limited, and may be a part of the entire gap formed between the outer box 9 and the inner box 10. It may also be arranged inside the opening / closing door.
- the refrigerator 100 When the refrigerator 100 is used up, it is dismantled and recycled at recycling centers in various places based on the Home Appliance Recycling Law. At this time, for example, if the vacuum heat insulating material 7 formed of the core material 5 made of the fiber assembly 1 (formed by the organic fibers 2) is used for the refrigerator 100 of the present embodiment, Since the combustion efficiency is not lowered or a residue is not generated during the thermal recycling and the recyclability is good, the crushing process can be performed without removing the vacuum heat insulating material 7.
- the refrigerator 100 which has arrange
- the crushing treatment can be performed with the box body, but the crushed glass fibers are mixed with the pulverized polyurethane foam and subjected to thermal recycling. The At this time, there is a difficulty in recyclability such as lowering combustion efficiency or becoming a residue after combustion.
- the organic fiber 2 is used for the core material 5550 so as not to contain inorganic fibers such as glass fibers, glass or the like powder is not generated even when crushed. Therefore, it is possible to suppress adverse effects on the human body due to glass powder and the like, and it is not necessary to remove the vacuum heat insulating material 7 from the refrigerator box body with great effort, so the dismantling time can be greatly shortened and the recyclability is also good. Yes, the recycling efficiency is greatly improved.
- the refrigerator 100 as a heat insulation box
- this Embodiment is not limited to this.
- the above-described various effects can be obtained even when applied to a cooling / heating device such as a heat storage, a vehicle air conditioner, a water heater, or a hot water storage tank.
- a heat insulating bag heat insulating container
- a deformable outer bag and an inner bag may be used instead of the box having a predetermined shape.
- FIG. 35 to 37 are diagrams showing the first embodiment
- FIG. 35 is a sectional view of the refrigerator 100
- FIG. 36 is a core of the vacuum heat insulating materials 7, 700 and 750 used for the heat insulating partition of the refrigerator 100 shown in FIG.
- FIG. 37 is a schematic view showing the materials 5 and 550
- FIG. 37 is a schematic view showing the vacuum heat insulating material 7 used for the heat insulating partition of the refrigerator 100.
- the vacuum heat insulating materials 7, 700, 750, the core material 5 and the fiber assembly 1 used here are the above-described vacuum heat insulating materials 7, 700, 750, the core material 5 and the fiber assembly 1 described in the present embodiment. Etc. are used, so heat insulation performance is excellent.
- the food storage room of the refrigerator 100 has a refrigeration room 150 disposed with a refrigeration room door 160 as an open / close door at the top, and refrigeration from the freezing temperature zone ( ⁇ 18 ° C.) below the refrigeration room 150, vegetables , Chilled, soft refrigeration ( ⁇ 7 ° C.), etc., a switching chamber 200 having a drawer door type switching chamber door 210 that can be switched to a temperature zone, and an ice making unit having a drawer door type ice making chamber door 510 in parallel with the switching chamber 200
- a freezer room 300 having a drawer door type freezer compartment door 310 disposed at the lowermost part, a drawer door type vegetable room door 410 between the freezer room 300 and the switching room 200 and the ice making room 500. 400 or the like.
- an operation panel 180 composed of an operation switch for adjusting the temperature and setting of each room and a liquid crystal for displaying the temperature of each room at that time. Yes.
- the machine room 601 and the cooler 650 in which the compressor 600 constituting the refrigeration cycle is arranged at the lower part, and the cool air cooled by the cooler 650 are sent to the refrigerating room 150 and the switching room 200.
- the cooler chamber 640 in which the fan 660 and the like are disposed is provided.
- a cooling air passage 680 for introducing cold air cooled by the cooler 650 into the refrigerating chamber 150 and an air passage for introducing cold air cooled by the cooler 650 into the freezer chamber 300. 690 etc. are provided.
- control board 900 is stored in the control board storage chamber 910 at the upper part of the refrigerator 100 and behind the heat insulating wall at the back of the refrigerator compartment 150.
- the control board 900 is connected to a compressor 600 and a damper that opens and closes the cooling air passage, and controls the opening and closing of the compressor 600 and the cooling air passage to control the temperature in the storage chamber such as the refrigerator compartment 150 and the freezer compartment 300. Control lead wires, power supply wires, and the like for control are provided.
- a storage case 201 is installed in the switching chamber 200, a storage case 301 is installed in the freezer compartment 300, and a storage case 401 is installed in the vegetable compartment 400, and food can be stored in these cases. .
- a vacuum heat insulating material 700 is provided on the heat insulating wall between the machine room 601 and the cooler room 640 below the refrigerator 100.
- the vacuum heat insulating material 700 may be used alone or may be embedded or disposed in the foam heat insulating material 11.
- the refrigerator 100 includes a refrigerator compartment 150 having an openable / refrigerated refrigerator door 160, a pull-out switching chamber door 210, a freezer compartment door 310, a vegetable compartment door 410, and an ice making compartment door 510.
- a plurality of storage rooms including a switching room 200, a freezing room 300, a vegetable room 400, an ice making room 500, and the like; a cooler 650 that is arranged on the back side of the storage room via a partition wall and generates cold air in the storage room; A cooler 650 and an in-compartment fan 660 that blows the cool air generated by the cooler 650 to each storage room, and a cooler that is disposed on the back side of the storage room via a partition wall and accommodates the cooler and the in-compartment fan A first heat insulation provided between the machine room 601, the machine room 601 provided in the lower part or upper part of the main body of the refrigerator 100 and housing the compressor 600 constituting the refrigeration cycle; and the machine room 601 and the cooler room 640.
- a second heat insulating wall provided between the machine room and the storage room, and a fiber assembly provided on the door of the storage room or the first heat insulating wall or the second heat insulating wall, and the organic fiber 2 formed into a sheet shape
- the core material 5 550 having a cut portion with a cut end surface is inserted into the outer packaging material 4 to seal the sealing portion of the outer packaging material around the sheet, so that the inside is in a substantially vacuum state
- a vacuum heat insulating material 7, 700 formed by sealing, and a long fiber equal to or longer than the length of the fiber assembly 1 is used for the organic fiber 2.
- the vacuum heat insulating material 700 provided on the heat insulating wall between the machine room 601 and the cooler room 640 has a complicated Z-shaped structure bent at two places as shown in FIG.
- the vacuum heat insulating material 700 is inserted in a sheet state of a predetermined size in which the core material 5 in which the fiber assembly 1 formed of long fibers is stacked in the outer packaging material 4 is cut (cut). After drying and evacuation, the inserted portion of the outer packaging material 4 is sealed by heat welding or the like to complete.
- the fiber assembly 1 is used for the core material 5, and at least the surface on the side to be bent is formed by shallow small holes or continuous grooves that can provide heat insulation performance to the extent that they do not penetrate through laser processing or the like. Bending portions 55 and 56 such as processing (for example, hole processing or groove processing by melting) are provided. Therefore, after the vacuum heat insulating material 700 is completed, it can be easily bent at a required predetermined angle from the bent portions 55 and 56 of the core material 5.
- the size, groove width, depth, and the like of the bent portions 55 and 56 are appropriately determined by experiments or the like based on the bending angle, the bending amount, and the like.
- the bent portions 55 and 56 are provided in a range that does not penetrate both sides of the bent portion, it becomes easy to bend, so that bending at a large angle is possible, and the bent portions 55 and 56 penetrate the core material 5. Therefore, heat insulation performance can be maintained. Moreover, since the long fiber longer than the sheet
- the fiber assembly 1 and a plurality of (for example, two) continuous sheet-like fiber assemblies 1J have a predetermined length (wrap margin Xb) in the width direction. ) If the core materials 5 and 550 are manufactured by laminating a plurality of times in a state where they are shifted and overlapped, the number of slits is also equal to the number of stacked fiber assemblies 1 and 1J (a plurality of 3 layers are overlapped).
- the folding portions 59 (the first slit portion 57 and the second slit portion 58) can easily bend both sides of the sheet surface. It becomes possible. Further, since the first slit portion 57 and the second slit portion 58 have a concave trapezoidal shape and can be formed on both sides in the thickness direction of the vacuum heat insulating material 750, for example, when the thickness is increased. However, since the first slit portion 57 and the second slit portion 58 formed on both sides of the sheet can be easily bent, the outer packaging material 4 is not torn or damaged. Further, even complicated shapes such as a Z shape, a C shape, and a W shape can be easily manufactured.
- the core material 560 having the recessed portion 760X is used instead of the core material 550 having the bent portion 59 (the first slit portion 57 and the second slit portion 58). Even if the thickness of the vacuum heat insulating material is increased, the recesses 760X are provided on both sides of the sheet surface, so that it can be easily bent on both sides of the sheet surface. In addition, since the recess 760X has a concave trapezoidal cross-sectional shape and can be formed on both sides in the thickness direction of the vacuum heat insulating material 760, for example, it is formed on both sides of the sea and the surface even when the thickness is increased. Therefore, the outer packaging material 4 is not torn or damaged because it can be easily bent at the recessed portion 760X. Further, even complicated shapes such as a Z shape, a C shape, and a W shape can be easily manufactured.
- the vacuum heat insulating materials 750 and 760 of the present embodiment are connected at the connecting portions (slit portions) between the adjacent fiber assemblies of the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. It becomes possible to bend at a predetermined angle (for example, approximately 90 degrees), and to dispose on, for example, at least two continuous wall surfaces of a heat insulating box having an upper surface, both side surfaces, a back surface, and a bottom surface of the refrigerator.
- a predetermined angle for example, approximately 90 degrees
- the present invention can be applied to two continuous wall surfaces such as a wall and a side wall, (4) a bottom wall and a side wall, and (5) a bottom wall and a back wall.
- (1) back wall and both side walls, (2) top wall and both side walls, (3) bottom wall and both side walls, (4) top wall, back wall It can be applied to three continuous walls such as a bottom wall.
- FIG. 38 is a diagram showing the first embodiment, and is another cross-sectional view of the refrigerator 100.
- FIG. 38 the same parts as those in FIG. In the drawing, the vacuum heat insulating materials 700, 750, and 760 are bent portions 59 and 56 formed by the bent portions 55 and 56, the first slit portion 57, the second slit portion 58, and the like formed by laser processing or the like.
- the present invention can be applied to devices such as a water heater and a refrigeration / air-conditioning apparatus other than the refrigerator.
- the vacuum heat insulating material 700 having a complicated structure of “Z” shape bent at two places has been described.
- the “L” shape bent at one place may be used, and the vacuum heat insulating material 700 may be bent at two places.
- it can be easily applied to a “C” shape, a “C” shape, a “J” shape, and a “W” shape that are bent at a plurality of locations.
- the vacuum heat insulating material of the present embodiment has been difficult to bend and drill holes so far, and it has been difficult to mount the vacuum heat insulating material (“Z” shape, “ko” shape, “ The present invention can also be applied to locations such as “C” shape, “J” shape, “W” shape, or locations where there are protrusions or pipes, and can be mounted on any device.
- Equipment such as a refrigerator equipped with the vacuum heat insulating material of the present embodiment is excellent in recyclability, has no adverse effects on the human body, and can be expected to improve heat insulating performance.
- a pipe connecting the compressor 600 and the cooler 650 may penetrate the heat insulating wall between the machine room 601 and the cooler room 640.
- the through holes 72 vacuum heat insulating material openings 71
- the vacuum heat insulating materials 7, 700, 750, and 760 may be provided in the vacuum heat insulating materials 7, 700, 750, and 760.
- FIG. 39 is a diagram showing the first embodiment, and is a schematic diagram showing a vacuum heat insulating material 700 used for a heat insulating partition of the refrigerator 100.
- the core material 5 is provided with a core material opening 51
- the outer packaging material 4 is provided with an outer packaging material opening 41 smaller than the core material opening 51 by a sealing amount necessary for sealing, thereby vacuum insulation.
- the vacuum heat insulating material 700 provided with the material opening 71 is obtained.
- the through-hole 72 that is the vacuum heat insulating material opening 71 of the vacuum heat insulating material 700 is large enough to pass through a pipe such as a suction pipe or a discharge pipe that wants to penetrate the heat insulating wall or a lead wire for control or power supply.
- a through-hole having a larger diameter than that may be used, and a notch shape may be used.
- the vacuum heat insulating material 700 of this Embodiment although the bending process parts 55 and 56 and the through-hole 72 which is the vacuum heat insulating material opening 71 are shown in the different location, the bending process part 55, A through hole 72 through which piping or the like is passed may be provided in 56. In this case, if the core material through hole 52 which is the core material opening 51 is provided in the bent portions 55 and 56 of the core material 5, the vacuum heat insulating material 7 having the through hole can be easily obtained.
- refrigerator 100 has a refrigerator compartment provided with an openable / retractable door (refrigerator compartment door 160, switching compartment door 210, freezer compartment door 310, vegetable compartment door 410, ice making compartment door 510).
- a plurality of storage rooms (refrigeration room 150, switching room 200, freezing room 300, vegetable room 400, ice making room 500) including 150, freezing room 300, and the like are arranged on the back side of the storage room via a partition wall for storage
- a cooler 650 for generating cool air in the chamber, a cooler 650 and an internal fan 660 for blowing the cool air generated by the cooler 650 to each storage chamber, and a partition wall on the back side of the storage chamber,
- a cooler chamber 640 that houses the cooler and the internal fan, a machine room 601 that is provided in the lower or upper part of the refrigerator main body and houses the compressor 600 constituting the refrigeration cycle, a machine room 601, and a cooler chamber 640 And a heat insulating wall provided between the two and the door of the storage room or
- a vacuum heat insulating material 7 and 700 formed by inserting the core material 5 into the outer packaging material 4 and sealing the sealing portion of the outer packaging material 4 around the sheet so that the inside is sealed in a substantially vacuum state.
- a long fiber equal to or longer than the length of the sheet 1 is used for the fiber 2. Therefore, the heat insulation performance of the vacuum heat insulating material 7,700 is good, recyclability is excellent, and there is no seal failure, so the reliability is high. Recyclability is good.
- the vacuum heat insulating material 700 is provided on the heat insulating wall between the machine room 601 and the cooler room 640 .
- the vacuum heat insulating material opening 71 may be applied to the cooling air passage.
- the vacuum heat insulating material 700 may be used for a partition wall, a partition wall, or a heat insulating wall having a cooling air passage.
- you may provide in the heat insulation wall which comprises the cooler room 640.
- a vacuum heat insulating material 700 is arranged in the heat insulating wall on the back or side of the refrigerator, and a concave groove (with a width of about the diameter of the pipe such as the condensation pipe) that can accommodate the pipe such as the condensation pipe by heat welding or laser processing.
- a continuous groove having a depth) may be provided, and piping such as a condensation pipe may be disposed in the groove to insulate the condensation pipe.
- a drain pan provided with a drain outlet for receiving defrost water falling from the cooler 650 such as a heat insulating wall between the machine room 601 and the cooler room 640 and discharging the defrost water to the outside of the refrigerator 100 or the machine room 601 Even if it has a function, since the vacuum heat insulating material 701 of the present invention includes the vacuum heat insulating material opening 71, the vacuum heat insulating material so that the position of the vacuum heat insulating material opening 71 substantially coincides with one of the drain ports. 700 may be arranged.
- the foamed resin when the foamed resin is filled between the outer box 9 and the inner box 10, a vent hole is required for filling the foamed resin. If it is disposed on a heat insulating wall such as between, the gas venting holes of the outer box must be provided avoiding the arrangement area of the vacuum heat insulating panel, and the foamed resin does not rotate well in the heat insulating box, resulting in manufacturing defects. Therefore, it is conceivable to provide a vent hole in the inner box, but this is insufficient, so it is possible to attach a vacuum heat insulating material to the inner box. It becomes difficult to paste.
- a spacer is provided for floating the vacuum heat insulating material from the outer box so as not to block the gas vent hole.
- a spacer is necessary, the cost is increased, and the assemblability is further deteriorated.
- a vacuum heat insulating material vacuum insulating material opening 71 such as a through hole or a notch of the vacuum heat insulating material 7, 700, 750, 760, and the vacuum heat insulating material opening 71.
- the vacuum heat insulating materials 7, 700, 750, and 760 of the present invention can be bent into a complicated shape, they can be easily attached to the inner surface of the inner box in the gap between the outer box having the unevenness and the inner box. . Therefore, the vacuum heat insulating materials 7, 700, 750, and 760 of the present invention are provided between the outer box 9 and the vacuum heat insulating materials 7, 700, 750, and 760, and between the inner box 10 and the vacuum heat insulating materials 7, 700, 750, and 760.
- the vacuum heat insulating material 7,700, 750, 760 can be directly pasted without providing a spacer or the like between 760 and the heat insulating box / refrigerator equipped with the vacuum heat insulating material with good heat insulating performance at low cost. Obtainable.
- the vacuum heat insulating materials 7, 700, 750, and 760 of the present invention are heat insulating materials for storage room doors such as the refrigerator compartment door 160, the switching room door 210, the freezer compartment door 310, the vegetable compartment door 410, and the ice making compartment door 510. May be provided. In this case, even if a screw or the like for fixing a handle such as a handle provided in the storage chamber door penetrates the heat insulating material, the vacuum heat insulating material 7 is positioned at a position substantially equivalent to the position of the screw portion for fixing the handle, The vacuum heat insulating material openings 71 of 700, 750, and 760 may be arranged.
- the vacuum heat insulating materials 7, 700, 750, and 760 of the present invention can be manufactured thinly because they have good heat insulating performance, and can be applied to heat insulation of the top plate of the refrigerator 100.
- the outer packaging material 4 around the core material opening 51 is sealed with the seal portion (seal margin 75), and then the inner side of the seal portion (seal margin 75) of the outer envelope material 4.
- An unnecessary portion without the core material 5 is formed by cutting, and as a result, the through holes 72 are formed in the vacuum heat insulating materials 7, 700, 750, and 760.
- the vacuum heat insulating materials 7, 700, 750, and 760 are left as they are without cutting unnecessary portions without the core material 5 inside the seal portion (seal margin 75) of the outer packaging material 4 as the vacuum heat insulating material openings 71. Also good.
- the vacuum heat insulating material 7, 700, 750, 760 has no through hole 72 in the vacuum heat insulating material opening 71, but the inside of the core material 5 inside the seal portion (seal margin 75) of the outer packaging material 4.
- the unnecessary unnecessary portion corresponds to the vacuum heat insulating material opening 71.
- the vacuum heat insulating materials 7, 700, 750, and 760 that have the core material opening 51 but do not have the vacuum heat insulating material through holes 72 are used as they are for the devices such as heat insulation boxes and refrigerators without providing the through holes 72. It is possible to perform drilling and screwing after it is incorporated in a range that does not affect the sealing performance of the seal part 75 in a state where it is incorporated in a device such as a heat insulation box or a refrigerator. Can be obtained, and low-cost vacuum insulation materials, insulation boxes, refrigerators, and other devices can be obtained.
- the vacuum insulating material 7, 700, 750, 760 having the core material opening 51 but not having the through hole 72 is used as the heat insulating material for the wall surface of the house.
- through holes for air conditioner refrigerant pipes and drain pipes are often drilled in accordance with the air conditioner installation position when the air conditioner is installed after the completion of the house. Since the extraction position of the piping and drain piping can be assumed to some extent in advance, the core material has the core material opening 51 in the vicinity of the extraction position of the refrigerant piping and drain piping, but the vacuum heat insulating material has a through hole 72.
- the refrigerant heat insulating material and the drain piping are taken out of the vacuum heat insulating materials 7, 700, 75 after the house is completed. , It may be carried out drilling in the portion of the through hole 72 of the 760. In this way, even if an air conditioner is not attached to the place, the packaging material 4 is present in the through hole 72, so that the inside and outside of the house do not penetrate and the heat insulation performance and the like are not significantly impaired.
- the bent portions 55 and 56 (or the bent portions 59 and the recessed portions 760X) and the through-holes 72 that are the vacuum heat insulating material opening portions 71 are simultaneously formed. Since it can be provided on a single vacuum heat insulating material, even a wall surface having a complicated shape such as a heat insulating wall or a partition wall between the machine room 601 and the cooler room 640 of the refrigerator 100 can be easily used. It can be processed and can be easily applied to pipes provided through the heat insulating wall, through holes such as lead wires and drains, and screw portions for fixing the handle.
- the core material 5 (or the core material 550, 560) is provided with both the bent portions 55, 56 (or the slit portions 57, 58, 560X) and the core material opening 51, the opening can be easily provided. Therefore, it is possible to obtain a vacuum heat insulating material 7 that can be easily bent, and therefore, a heat insulation efficiency and a cooling efficiency are good, and handling and workability are also good.
- FIG. 40 and 41 are diagrams showing the first embodiment.
- FIG. 40 is a schematic diagram showing the core material 5 of the vacuum heat insulating material 701.
- FIG. 41 is used for heat insulation of the compressor 600 and a hot water storage tank of a water heater. It is a schematic diagram showing the vacuum heat insulating material 701.
- FIG. 40 is a schematic diagram showing the core material 5 of the vacuum heat insulating material 701.
- FIG. 41 is used for heat insulation of the compressor 600 and a hot water storage tank of a water heater. It is a schematic diagram showing the vacuum heat insulating material 701.
- FIG. 40 and 41 are diagrams showing the first embodiment.
- FIG. 40 is a schematic diagram showing the core material 5 of the vacuum heat insulating material 701.
- FIG. 41 is used for heat insulation of the compressor 600 and a hot water storage tank of a water heater. It is a schematic diagram showing the vacuum heat insulating material 701.
- FIG. 40 and 41 are diagrams showing the first embodiment.
- FIG. 40 is
- the vacuum heat insulating material 701, the core material 5, the fiber assembly 1 and the like used here are the above-described vacuum heat insulating materials 7, 700, 750, 760 and the core materials 5, 550, 560 and fibers described in the present embodiment. Since the aggregates 1, 1J, 1K, etc. are used, the heat insulation performance is excellent.
- the core material 5 used for the vacuum heat insulating material 701 is composed of a laminated structure of nonwoven fabric sheets which are fiber assemblies 1.
- the core material 5 is formed with a shallow small hole (or continuous grooving) that can provide heat insulation performance to the extent that it does not penetrate through a heat roller provided with a heat welding portion such as an embossing 110 or laser processing.
- a plurality of bending portions 55 are provided at a predetermined interval or a necessary interval.
- the vacuum heat insulating material 701 can be easily bent from the bending portion 55 of the core material 5 at a required predetermined angle after completion, the portion that is desired to be bent can be reliably bent, and the portion that is not desired to be bent is bent or deformed. Can be suppressed.
- the bending portion 55 in which the core material 5 is provided with a plurality of hole processing (or continuous groove processing) at a certain degree of space in the width direction (having a foldable interval and depth) is the core.
- a plurality of members 5 are provided at predetermined intervals or intervals having a required length in the length direction of the material 5.
- the vacuum heat insulating material 701 is used for heat insulation of a substantially cylindrical container such as heat insulation around the outer peripheral portion of a sealed container of a compressor 600 such as the refrigerator 100 or a refrigeration / air conditioner, or heat insulation around the outer peripheral portion of a hot water storage tank of a water heater. Is done.
- the size, groove width, depth, and the like of the bent portion 55 are appropriately determined through experiments and the like based on the bending angle and the amount of bending.
- the bent portion 55 is provided in a range that does not penetrate both surfaces of the core material 5 at the position to be bent, it becomes easy to bend, so that bending at a large angle is possible.
- the bending process part 55 does not penetrate the core material 5, heat insulation performance can also be maintained. If laser processing is used, even complicated curved surface processing and hole processing can be easily performed, and the temperature rise during melting can be suppressed, so only the necessary part has the required size, width and depth. And continuous groove machining.
- this laser processing is also applied to the embossing 110, it is not necessary to separately prepare a heat roller, equipment investment can be reduced, and equipment such as a low-cost vacuum heat insulating material 701, a refrigerator 100, a refrigerating air conditioner, and a hot water supply device can be provided. can get.
- the bending portion 55 provided in the core material 5 and the through hole 72 which is the vacuum heat insulating material opening 71 are shown in different locations. You may provide the through-hole 72 which penetrates piping etc. in the bending process parts 55 and 56. FIG. In this case, if the core material through hole 52 which is the core material opening 51 is provided in the bent portions 55 and 56 of the core material 5, the vacuum heat insulating material 701 having the through hole can be easily obtained.
- the vacuum heat insulating material 700 of the present embodiment does not have to be a heat insulating wall between the compressor 600 and the cooler 650, and the control board storage chamber 910 and the refrigerator compartment 150 in which the control board 900 and the like are stored. You may arrange
- the vacuum heat insulating material 7 and 700 having high workability and a high degree of freedom of arrangement and high heat insulation performance can be used, so that no dew is formed in the control board storage chamber 910, and high performance and high performance are achieved.
- a reliable refrigerator 100 is obtained.
- the effect can be obtained even if it is disposed between the storage chambers that require heat insulation performance, or between the cooler chamber 640 and the storage chamber.
- the vacuum heat insulating materials 7 and 700 of this Embodiment have good heat insulation performance, they can be made thin, and since bending and opening are easy to process, the top plate, the partition plate, and the air path of the refrigerator 100 can also be applied. .
- the core material 5 is provided with a core material through hole 52 that is a core material opening 51 and a notch 53, and the vacuum heat insulating material 701 is vacuum-treated.
- a through hole 72 and a notch 73 which are heat insulating material openings 71 are provided.
- the core material 5 is provided with a core material through hole 52 and a notch 53, and the outer packaging material 4 has an outer packaging material opening 41 smaller than the core material through hole 52 and the notch 53 by a seal margin necessary for sealing.
- a vacuum heat insulating material 701 having a vacuum heat insulating material through hole or a vacuum heat insulating material notch as the vacuum heat insulating material opening 71 is obtained.
- the end surface is cut using the laminated structure of the fiber assembly 1 formed of the long-fiber organic fibers on the core material 5 to obtain a sheet having a predetermined size. Therefore, since the remaining organic fibers 2a are unlikely to protrude or jump out due to the cut of the end face, the remaining organic fibers 2a will not jump out of the sealing portion of the outer packaging material 4 and will not cause a sealing failure.
- the seal margin 75 can be shortened, and a highly reliable vacuum heat insulating material that does not cause defective sealing at low cost can be obtained.
- the seal margin 75 of the through holes 52 and 72 and the notch 73 can be shortened, the through holes 52 and 72 can be used largely when incorporated in equipment such as a heat insulation box and a refrigerator, so that the vacuum insulation is easy to use. A material is obtained.
- the seal margin 75 of the outer packaging material 4 can be reduced, the hole diameter of the through holes 52 and 72 that are the core material opening 51 and the opening width (length) of the notches 53 and 73 can be reduced. Even with the vacuum heat insulating materials 7, 700, 701, and 750 having the holes 52 and 73 and the notches 53 and 73, the core material 5 can be made large and a vacuum heat insulating material with high heat insulating performance can be obtained.
- the vacuum heat insulating material 701 is used for heat insulation of a substantially cylindrical container such as heat insulation around the outer peripheral portion of a sealed container of a compressor 600 such as the refrigerator 100 or a refrigeration / air conditioner, or heat insulation around the outer peripheral portion of a hot water storage tank of a water heater. Is done. (Vacuum heat insulating materials 7, 700, 701, 750, and 760 are disposed so as to cover at least a part around the substantially cylindrical container.) At this time, the vacuum heat insulating material 701 has a through hole that is a vacuum heat insulating material opening 71.
- the hole 72 and the notch 73 are larger than the size of the pipe or lead wire to be penetrated, such as a pipe such as a suction pipe or a discharge pipe to be penetrated through the vacuum heat insulating material 701, a control lead wire or a power lead wire.
- a through hole having a diameter or a notch shape may be used.
- a housing having a substantially rectangular parallelepiped shape or a substantially cylindrical shape, a substantially cylindrical hot water storage tank stored in the housing for storing water or hot water, and a refrigeration cycle for heating water in the hot water storage tank (for example, a compressor, In a heat pump type hot water supply apparatus comprising a first heat exchanger (heat exchanger for water heating), a throttling device, and a heat source machine comprising a second heat exchanger (evaporator) connected in an annular shape)
- the vacuum heat insulating material 7,700,701,750,760 may not be disposed directly around the hot water storage tank, and the vacuum heat insulating material 7,700 of the present invention may be disposed on all or at least a part of the inner wall of the housing.
- the heat insulation effect in the casing is improved, and the temperature of the hot water in the hot water storage tank can be maintained at a predetermined temperature for a long period of time. (Hot water supply ) Can be obtained. In addition, noise can be reduced and recyclability is improved.
- R410A carbon dioxide (CO2), flammable refrigerant (HC refrigerant, etc.), low-flammability low GWP refrigerant (R32, HFO refrigerant, etc.), etc. are used as the refrigerant, compressor, condenser (or gas cooler).
- An outdoor unit such as a refrigeration / air-conditioning unit or a hot water supply unit, a heat source unit, etc., which are configured by sequentially connecting a decompression device and an evaporator, a fan chamber and a compressor in which a fan is housed in a substantially rectangular housing
- the vacuum heat insulating material 7, 700, 701, 750, 760 of the present invention is attached to the inner surface of the machine room or integrated with the housing. May be formed.
- the present invention can be easily taken out from the vacuum heat insulating material opening 71 of the vacuum heat insulating materials 7, 700, 701, 750, and 760 to the outside of the housing. It has become. By doing in this way, the improvement of the heat insulation performance of a compressor and the effect of noise prevention are acquired.
- a partition wall partitions a fan chamber in which the fan is housed and a machine room in which the compressor is housed in a substantially rectangular parallelepiped housing, and at least a part of the machine room interior (or outside) is provided.
- equipment such as a refrigerator, vending machine, cold storage, water heater, refrigeration / air conditioner, etc. having a substantially cylindrical compressor
- the present invention covers all or at least a part around the substantially cylindrical compressor.
- the fan chamber in which the fan is accommodated and the machine room in which the compressor is accommodated are partitioned in the housing having a substantially rectangular parallelepiped shape as described above.
- a partition wall is provided and a gas cooler is arranged inside the housing, for example, at the lower part or side part of the fan room or the machine room, the entire inner surface of the machine room or the inside (or outside) of the machine room
- the vacuum heat insulating material 7, 700, 750, 760 of the present invention is provided on at least a part of the cover, or all or at least a part around the substantially cylindrical compressor is covered.
- the high-pressure refrigerant gas compressed by the machine can be sent to the gas cooler and condenser without heat loss, the hot water temperature and the heating capacity can be improved, and the energy-efficient heat pump water heater It is possible to provide a water vessel. Further, by providing the vacuum heat insulating material 7, 700, 750, 760 of the present invention inside the housing, there is an effect that noise of the fan and the compressor can be reduced.
- the vacuum heat insulating material 7,700,701,750,760 of the present invention is used as a heat insulating material for a substantially cylindrical container such as a jar pot, the heat insulating performance is improved, so that the heat can be kept for a long time. As a result, energy-efficient equipment such as jar pots can be obtained.
- the heat insulating material in the vicinity of the control lead wire and the power supply lead wire is used.
- the control lead wire or the power supply lead wire is passed through the vacuum heat insulating material opening 71 and used as a heat insulating material, it also functions as an insulating material.
- 750, 760 and a heat insulating box including the vacuum heat insulating materials 700, 701, 750, 760, a compressor 600, a vending machine, a cold storage, a refrigerator 100, a water heater, a refrigeration / air conditioner, and the like.
- the heat insulating material of this embodiment is used in the vicinity of a portion where an electrical component is disposed such as the vicinity of a power supply connection or control board or at least a part of the periphery of a power supply box in which a control board is stored, the safety of this embodiment The effect that a simple device is obtained is obtained.
- the vacuum heat insulating materials 750 and 760 of the present embodiment are used around the power supply box, the inner wall of the machine room, the compressor, the hot water storage tank of the water heater, etc. Even if a service person (or user) touches if there is a leak, there is no risk of an electric shock, and a further safer device can be obtained.
- the rear surface of the device main body can be easily seen visually when disassembling or recycling the part where the vacuum heat insulating material is disposed.
- the side of the entire body of equipment such as the back and sides of the refrigerator body for the refrigerator 100, the side and back of the heat source for the water heater, the peripheral surface of the hot water storage tank, and the peripheral surface of the electric water heater
- the whole view and partial display such as cross-sectional view, development view, three-dimensional view and perspective view are displayed, and the vacuum insulation material placement position, getter agent placement position and adsorbent placement position etc. are shown on this overall view and partial display view. Is displayed so that useful information can be displayed at the time of disassembly or recycling so that it can be understood immediately by visual inspection.
- the amount and type of the reusable core material can be easily grasped. it can.
- the material name and amount of the core material 5 of the vacuum heat insulating material 7 used in the device are displayed, and the fact that the core material 5 is not a glass fiber but an organic fiber is also displayed.
- “Glass fiber is not used for the core material of the vacuum insulation material used in this product.
- Organic fiber (such as PET) is used for the core material.
- a refrigerator 100, a water heater, or a device that can be easily disassembled and disassembled can be obtained. Therefore, even if the core materials 5,550,560 (organic fibers) of the vacuum heat insulating materials 7,700,750,760 are mixed with urethane waste during recycling and subjected to thermal recycling, the combustion efficiency is not reduced.
- the present embodiment uses the fiber assembly 1 of continuous fibers that is continuous with the core material 5, the cut portion of the nonwoven fabric sheet (for example, the cut portion of the sheet end face or the hole processing cut)
- the length of the remaining fibers generated by the cutting can be secured long. Therefore, the remaining fibers can be prevented from protruding from the end face of the cut portion, and the protruding of the remaining fibers generated by the cut from the cut portion that occurs when the short fiber is used as the core material does not occur. Therefore, when the core material 5 is inserted into the outer packaging material 4 and sealed, the sealing performance is not impaired by the remaining fibers that protrude.
- the vacuum heat insulating materials 7,700, 750, 760 and the vacuum heat insulating materials 7, excellent in processability, handleability, heat insulating performance and productivity Equipment such as a heat insulation box, vending machine, cold storage, refrigerator 100, water heater, refrigeration / air conditioner, etc. provided with 700, 750, 760 can be provided.
- the organic fiber 2 is used for the core material 5 of the vacuum heat insulating material 7, compared with the case where the hard and brittle glass fiber is used as the core material 5 like the past.
- the vacuum heat insulating material 7 is manufactured, dust does not scatter and adhere to the skin, mucous membrane, etc. of the worker to give irritation, and handling and workability are improved.
- the organic fiber 2 is used for the core material 5 of the vacuum heat insulating material 7, manufacture of the vacuum heat insulating material 7 compared with the case where the hard and brittle glass fiber is used as a core material like the past. Occasionally, dust does not scatter and adhere to the skin and mucous membranes of workers, which can cause irritation, improving handling and workability.
- the nonwoven fabric sheet of the fiber assembly 1 using a long fiber is laminated
- the core material 5 is subjected to a heat roller or laser processing to form a groove in the vacuum heat insulating material 7, thereby forming a groove substantially similar to the pipe shape (a groove having a substantially semicircular cross section). ) Can be provided, so that a pipe can be arranged in the groove.
- the fiber aggregates of the core members 550 and 560 are arranged in the width direction with a predetermined gap so that the vacuum heat insulating materials 750 and 760 have concave portions (first slit portion 57, second slit portion 58, and concave portion 760X.
- the vacuum heat insulating material of the present invention may be provided on a wall surface, a ceiling, a floor surface or the like of a house or a store. Since the vacuum heat insulating materials 7, 700, 750, and 760 of the present invention do not use glass fiber for the core material 5, dust of glass fiber scatters at the time of construction or dismantling of a house and adheres to the skin / mucous membrane of an operator. This eliminates irritation and improves handling, workability, safety, and recyclability.
- a refrigerant pipe for a refrigeration / air conditioner such as an air conditioner, a control lead wire take-out part, a vent hole, a power line, a water supply pipe, and a drain pipe It can be easily arranged and installed in a hole for taking out a wire or a hole for taking out a wire for a telephone or the Internet. Moreover, since bending is also easy, the installation to a curved surface or a bent part is also easy.
- the organic fiber 2 is used as the fiber, and the fiber assembly 1 in which the organic fiber 2 is formed into a sheet shape, the continuous sheet-like fiber assembly 1J, the first (organic) fiber assembly 1K, the second The core material 5,550,560 having the end face 1a having a predetermined length or width and the core material 5,550,560 are disposed inside.
- a gas barrier outer packaging material 4 that is housed and has a seal portion in a range larger than the core materials 5, 550 and 560 by the seal length, and seals in a state where the inside is decompressed, (organic) fiber 2 Since the (organic) fiber 2 continuous over the length or width of the core material 5, 550, 560 is used and the residual organic fiber 2a generated by the cut is suppressed from protruding from the cut portion, the seal portion 45 opposite the core The remaining fibers 2a do not protrude from the cut surface (end surface 5a) of the sheet end surface of 5,550,560, no seal failure occurs, high recyclability is good and heat insulation performance is not easily deteriorated and reliable High-performance vacuum heat insulating material 7,700,701,750,760 is obtained.
- organic fibers 2 are used as the fibers 2, and the end surfaces are formed so as to obtain a predetermined length, which is configured by a laminated structure of the fiber assembly 1 in which the organic fibers 2 are formed in a sheet shape.
- the core material 5 is formed by laminating the core material 5, 550, 560, or the fiber assembly 1 in which the organic fibers 2 are formed into a sheet shape, and then cutting the end face 5 a to a predetermined length (or width).
- the core material 5 is housed inside, and the outer size of the core material 5 (for example, the length and width when the core material is rectangular, and the diameter when the core material is circular) is sealed.
- the cut part for example, the end face 5 .
- 1 is formed by cutting the end surface 5a to a predetermined length (or width) after laminating 1 and having a core material opening 51 provided by cutting openings such as a through hole 52 and a notch 53.
- 5, 550, 560 and the core material 5 are housed inside, the periphery of the core material 5, 550, 560 (or the sheet-like fiber assembly 1) (for example, the end surfaces 5 a, 1 a) and the core material opening 51.
- the gas barrier outer packaging material 4 and the core material 5 are sealed in a substantially vacuum state by sealing the sealing portion 78.
- sealing portion 78 (For example, end face 5) , 1a) and the seal portion 45, 78 provided around the core material opening 51 is provided in the sealed outer packaging material 4, and the seal margin 75 is longer than the size of the core material opening 51.
- an outer packaging material opening 41 which is an opening such as a through hole or a notch having a small hole size (diameter when the opening is circular) and a length (or width), and an end face on the organic fiber 2 5a, 1a) is made of a long fiber having a length equal to or longer than the length (or width) of the sheet of the core material 5, 550, 560 from which the cut 5a, 1a) is cut.
- Fiber or fiber having a length equal to or longer than the length of the sheet even if the core material opening 51 such as a through hole or notch is provided by cutting (cutting), the through hole Inside the cut part of the core material opening 51 such as a notch
- the cut organic fibers 2b cut by cutting on the sides and the remaining organic fibers 2a remaining on the sheet will not pop out, no seal failure will occur, recyclability is good, and the heat insulation performance
- a heat insulation box, equipment, etc. using the vacuum heat insulating materials 7,700,701,750,760 and the vacuum heat insulating materials 7,700,701,750,760 are not obtained.
- the thickness of the fiber assembly 1 is not less than 3 times and not more than 18 times the fiber diameter of the organic fiber 2 when accommodated in the gas barrier container (outer packaging material 4) in a substantially vacuum state (reduced pressure state). Therefore, heat insulation performance improves rather than the case where a cotton-like fiber is used for a core material. Further, since the productivity is improved, the vacuum heat insulating material 7 with high performance and high reliability can be obtained at low cost.
- an organic fiber assembly in which organic fibers are formed into a sheet shape and heat-welded to the fiber assembly 1 is used, and the fiber assembly 1 is formed into a sheet shape by heat-welding the organic fibers 2. Since the ratio of heating and welding accounts for 3% or more and 20% or less of the total area (sheet area), both deformation due to compressive strain and a decrease in heat insulation performance can be suppressed. That is, by making the area to be heat-welded 3% or more of the total surface area (sheet surface area), the fiber assembly 2 does not become disjoint, the handling strength is increased, and the handleability of the fiber assembly 1 is improved.
- the compressive strain can be suppressed to a low level, and the thermal conductivity can be reduced. Therefore, it is possible to obtain a vacuum heat insulating material which is not easily deformed and can improve the heat insulating performance.
- the compressive strain can be further reduced to 198 [g / m 2 ] or less. In this case, the heat insulating performance can be maintained, so that the vacuum heat insulating materials 7,700,701,750,760 that are difficult to be deformed and obtain the necessary heat insulating performance can be obtained.
- the fiber aggregates 1 and 1J are formed into a sheet shape by heating and welding continuous organic fibers 2, for example, and the basis weight of the nonwoven fabric as the fiber aggregate 1 is 4.7 g / m 2 or more and 70 g. / m 2 or less, alternatively at 140 g / m 2 or more 198 g / m 2 or less, since the heat welding portion was made to penetrate the thickness direction of the sheet to the back surface of the fiber assembly 1 of the surface, the necessary heat insulating performance
- a non-woven fabric, vacuum heat insulating material 7,700, 750, 760, a heat insulating box, a refrigerator 100 using the vacuum heat insulating material 7, a water heater, a jar pot, etc. that can be secured and easy to manufacture and have good recyclability can be obtained. .
- the handleability of the core material 5 is good, and the vacuum heat insulating material 7 with high heat insulation performance is obtained.
- the fiber assembly 1 is formed by heating and welding continuous organic fibers 2, and the weight basis weight of the nonwoven fabric that is the fiber assembly 1 is 4.7 g / m 2 or more and 130 g / m 2. Since the heat-welded part does not penetrate in the thickness direction of the sheet from the front surface to the back surface of the fiber assembly 1, the necessary heat insulation performance can be ensured, and it is easy to manufacture and has good recyclability, Equipment such as the refrigerator 100, the hot water heater, and the jar pot using the vacuum heat insulating materials 7,700,750,760, the heat insulating box, and the vacuum heat insulating materials 7,700,750,760 are obtained. Moreover, the vacuum heat insulating material 7,700,750,760 of the handling property of the core material 5 and high heat insulation performance is obtained.
- the fabric weight of the nonwoven fabric which is the fiber assembly 1 is 85 g / m 2 or more and 198 g / m 2 or less, the deformation of the fiber assembly 1 due to the temperature and the compressive force at the time of vacuum forming is reduced. Since the thickness of the sheet becomes thick and difficult to be distorted, rigidity against compression is obtained, and deformation is difficult during vacuum forming, so that a highly reliable vacuum heat insulating material 7 is obtained without causing shape defects due to deformation.
- the nonwoven fabric sheet (fiber assembly)
- the weight per unit area of the body 1) may be 4.7 [g / m 2 ] or more and 26 [g / m 2 ] or less, and an improvement in heat insulation performance can be expected.
- the weight basis weight of the nonwoven fabric sheet is 110 [g / m 2 ] or more, and the basis weight is 1 or less (for example, 198 [g / m 2 ] or less).
- a vacuum heat insulating material with small deformation and good handleability can be obtained.
- the deformation (compression strain) of the nonwoven fabric sheet is suppressed and the heat insulation performance is desired to be improved to some extent (the thermal conductivity is the same as that in which the conventional cotton-like fiber is used for the core material, 0.003 [W / MK] or less)
- the basis weight of the nonwoven fabric sheet is 140 [g / m 2 ] or more and 198 [g / m 2 ] or less, there is little deformation (compression strain) and the core material
- a vacuum heat insulating material with good handleability and high heat insulating performance can be obtained.
- a core material 5 having a cut structure in which an end face 5a is cut to have a predetermined length which is configured by a laminated structure of fiber assemblies 1 in which organic fibers are formed into a sheet shape and heat-welded.
- the length of the seal is larger than the size of the outer shape of the core 5 that houses the core 5 and has a cut portion (for example, the length and width when the core is rectangular and the diameter when it is circular).
- the sealing material is sealed by sealing the gas barrier outer packaging material 4 having the sealing portion 78 that seals the periphery of the outer shape including the cut portion and the sealing portions 45 and 78 of the outer packaging material 4 within a range that is larger by (seal margin 75).
- the basis weight of the fiber assembly 1 (nonwoven fabric sheet) The 4.7 g / m 2 or more 70 g / m 2 or less, if so that the fiber aggregate than 20% of the sheet area a range of providing a heat welding portion (nonwoven fabric sheet) (hereinafter preferably 8%), heat Non-woven fabric, vacuum heat insulating material, heat insulation box using vacuum heat insulating material, refrigerator, water heater with low conductivity, high heat insulating performance, good productivity, easy manufacturing and good sheet handling, and good recyclability , Equipment such as jar pots, refrigeration and air conditioning equipment, showcases.
- the fiber assembly 1 is less likely to be disjointed and the handleability is improved. Furthermore, in order to perform appropriate pressurization and heat-welding, the contact area between the organic fibers 2 is reduced. The increase can be suppressed, and the heat conduction from the heat-welded portion due to the increase in heat transfer can be suppressed to prevent the heat insulation performance from decreasing. In addition to the effect of improving heat insulation performance, productivity can be improved, production costs can be reduced, and low cost, high performance and highly reliable vacuum insulation materials, insulation boxes using vacuum insulation materials, refrigerators, water heaters , Equipment such as jar pots, refrigeration and air conditioning equipment, showcases.
- the thickness of the fiber assembly 1 (nonwoven fabric sheet) is 3 to 18 times the average fiber diameter
- the weight basis weight of the fiber assembly 1 (nonwoven fabric sheet) is 98 [g / m 2 ] or more (preferably 140 [preferably 140 [g / m 2 ]). g / m 2 ] or more) 198 [g / m 2 ] or less
- the range in which the heat-welded portion is provided on the fiber assembly 1 (nonwoven fabric sheet) is 3% or more and 20% or less (preferably 8% or less) of the sheet area.
- the nonwoven fabric, the vacuum heat insulating material, and the vacuum heat insulating material can be easily manufactured with low deformation, good productivity, good sheet handling, high reliability, and good recyclability.
- Equipment such as heat insulation boxes using materials, refrigerators, water heaters, jar pots, refrigeration / air-conditioning equipment, showcases, etc. can be obtained.
- the organic fibers 2 are heat-welded, the fiber assembly 1 is less likely to be disjointed and the handleability is improved. Furthermore, in order to perform appropriate pressurization and heat-welding, the contact area between the organic fibers 2 is reduced.
- the increase can be suppressed, the heat conduction from the heat welded portion due to the increase in heat transfer can be suppressed, and the heat insulation performance can be prevented from decreasing.
- productivity can be improved, production cost can be reduced, and low cost, high performance and highly reliable vacuum heat insulation, heat insulation box using vacuum heat insulation, refrigerator, water heater , Equipment such as jar pots, refrigeration / air-conditioning equipment, showcases.
- the cross-sectional shape of the fibers constituting the fiber assembly 1 is an irregular cross-sectional shape such as a substantially triangular shape, a substantially C-shaped shape or a substantially Y-shaped shape, and the cross-sectional shape of the organic fiber 2 is substantially the same as a fiber having a substantially circular cross-section. If the cross-sectional area is substantially triangular, the second moment of cross-section is greater than that of a fiber having a substantially circular cross-sectional area, and the rigidity is improved. It reduces and the heat insulation performance of the vacuum heat insulating material 7 improves. Moreover, the same effect can be obtained even when the cross-sectional shape is an irregular shape such as a substantially C shape or a substantially Y shape.
- the cross-sectional shape when crushed by the pressure at the time of molding becomes a pipe shape (substantially circular shape with a hollow center part), so a fiber with a substantially circular cross section is used. Rather than this, the cross-section of the pipe shape makes the heat transfer worse, and the heat insulating performance of the vacuum heat insulating materials 7,700,701,750 is improved.
- the core materials 5, 550, 560 are laminated by combining a plurality of types of core materials 5, 550 having different basis weights, the thickness after lamination is the same as compared with the case where the same thickness is laminated. Then, the core material 5 as a whole can reduce the strain, and has a better heat insulation performance than a case where high-weight materials are laminated to the same thickness, and a highly reliable vacuum heat insulating material 7 with less deformation due to strain. 700,750 are obtained.
- the required heat insulation performance can be ensured as compared with the case where the materials having lower weight are laminated to the same thickness, and the predetermined rigidity is obtained, so that the heat insulation performance is good, the deformation is high performance and the highly reliable vacuum heat insulating material 7 , 700, 701, 750, 760 are obtained.
- the core members 5, 550, 560 are formed of a laminated structure of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H, and the first (organic) fiber assembly If 1K and the second (organic) fiber assembly 1H are overlapped so as to cross each other, the point-to-point contact between the sheets approaches and the heat insulation performance is further improved. Further, if the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H have different basis weights, the same thickness as compared with the case where the same thickness is laminated. The core material 5 as a whole can reduce the strain, and can be made thinner than the case where the same number of high-weight materials are laminated.
- the heat insulation performance is good, the lamination thickness is thin, and there is less deformation due to distortion.
- a highly vacuum insulating material 7 can be obtained. Furthermore, the required heat insulation performance can be ensured as compared with the case of laminating the same number of materials with a low basis weight, and the required rigidity is obtained, so that the heat insulation performance is good, the deformation is high performance, and the vacuum insulation material 7 is highly reliable. 700, 701, 750, 760 are obtained.
- the cut portion (for example, the cut portion (end surface 1a, 5a) or hole of the sheet end surface) of the nonwoven fabric sheet of the fiber assembly 1 It is possible to ensure a long length of the remaining organic fiber 2a generated by the cut in the cut portion (through hole 52) or the cut portion (notch 53) in the cut processing. Therefore, it is possible to suppress the remaining organic fiber 2a from protruding from the end surface of the cut portion, and the protrusion of the remaining organic fiber 2a generated by the cut from the cut portion that occurs when the short fiber is used for the core material 5 does not occur. . Accordingly, the sealing performance is not impaired by the residual organic fiber 2a that protrudes when the core materials 5, 550, and 560 are inserted into the outer packaging material 4 and sealed.
- the organic fiber 2 uses the continuous fiber continuous in the length direction or the width direction of the fiber assembly 1, the cut part (for example, core) of the fiber assembly 1 (nonwoven fabric sheet) Generated by cutting at the cut portion (end surface 5a, 1a) of the material 5, 550 or the fiber assembly 1, the cut portion of the hole processing (through hole 52), the cut portion of the cut processing (notch 53), etc. Since the length of the remaining organic fiber 2a can be ensured to be long, it is possible to suppress the protrusion of the residual fiber generated by the cut from the cut portion that occurs when the short fiber is used as the core material.
- the seal length of the seal portion of the outer packaging material 4 can be shortened. It can be obtained thermal material.
- the core material 5,550,560 is only the length of the protruding portion of the remaining fiber (for example, about 1 mm to 10 mm) as compared with the case where the conventional short fiber is used.
- the size of the sheet (the length and width of the sheet) can be increased, and the area that can be insulated can be increased, so that the heat insulation performance is improved.
- the organic fiber 2 of the fiber assembly 1 is any one of polyester, polystyrene, polypropylene, polylactic acid, aramid, and liquid crystal polymer, it is excellent in processability, handleability, heat insulation performance, and productivity.
- an outer box 9 and an inner box 10 disposed inside (inside) the outer box 9 are provided, and the vacuum heat insulating materials 7 and 700 of the present embodiment described above are provided in the gap between the outer box 9 and the inner box 10. , 750, 760 are provided, the heat insulation box provided with the vacuum heat insulating material 7 excellent in workability, handling property, heat insulation performance and productivity and good heat insulation performance, and the refrigerator 100 provided with the heat insulation box can be obtained.
- the spacer 8 is disposed between the outer box 9 and the vacuum heat insulating materials 7, 700, 750, 760, the heat heat from the outside is introduced through the spacer 8 through the vacuum heat insulating materials 7, 700, 750, 760. Insulation efficiency is improved because of heat insulation.
- heat insulation with urethane or the like can be further performed. Will improve. Further, the strength of the box can be secured by the outer box 9, the inner box 10, the foam heat insulating material 11 (urethane), and the spacer 8.
- the heat insulation wall between the machine room 601 that houses the compressor 600 and the cooler room 640 that houses the cooler 650 that generates cold air is bent in two places, or a complicated shape that is bent in three or more places. Since the vacuum heat insulating materials 7, 700, 750, and 760 of the present embodiment are disposed on the core material 5, the heat insulating wall of the refrigerator 100 has a bent shape. However, it is possible to easily arrange a vacuum heat insulating material with low cost, good recyclability, and high heat insulating performance.
- the refrigerator 100 with high heat insulating performance can be provided at low cost.
- the vacuum heat insulating materials 7,700, 750, 760 are provided with the vacuum heat insulating material openings 71 such as the through holes 72 or the notches 73 in the vacuum heat insulating materials 7,700.
- vacuum heat insulator 7 , 700, 750, and 760 are obstructed when the vacuum heat insulating materials 7, 700, 750, and 760 such as the suction pipe and the discharge pipe, and the control and power supply lead wires are provided. Even if there are things, low cost The vacuum heat insulating materials 7, 700, 750, and 760 that can easily process openings such as the through-hole 72 and the notch 73 can be disposed at a low cost and a high degree of freedom in disposing and a refrigerator having high heat insulating performance. 100 can be provided.
- the refrigeration / air-conditioning apparatus such as the air conditioner of the present embodiment is installed indoors and includes an indoor unit that performs indoor air-conditioning, a case having a substantially rectangular parallelepiped shape, and a fan inside the case.
- An outdoor unit having a partition wall that partitions the fan chamber and the machine room in which the compressor is housed, and the interior of the machine room configured by the housing and the partition wall (the partition wall and the housing in the machine room).
- the vacuum heat insulating materials 7, 700, 701, 750, and 760 of the present embodiment are disposed on at least a part of the body or the periphery of the compressor) or the outside (the casing constituting the machine room or the outer wall of the partition wall). Therefore, since the machine room and the compressor can be insulated, the heating capacity can be improved, and an energy-efficient refrigeration / air-conditioning apparatus and equipment can be provided.
- a device such as a refrigerator, a refrigeration / air-conditioning device, or a hot water supply device having a substantially rectangular parallelepiped box having two continuous wall surfaces among at least the upper surface, both side surfaces, the back surface, the front surface, and the bottom surface, the core material 5 , 550, 560, bending portions 55, 56 (concave portions formed by laser processing, etc.), first slit portion 57 between adjacent fiber assemblies, second slit portion 58, or between adjacent fiber assemblies
- the third slit portion 560K is provided, and the vacuum heat insulating materials 7, 700, 701, 750, and 760 are bent at a predetermined angle (for example, approximately 90 degrees) from the bent portions 55 and 56, the bent portion 59, and the recessed portion 760x at least.
- the vacuum heat insulating material can be continuously arranged at the corner portion between two continuous wall surfaces having a predetermined angle, the coverage of the vacuum heat insulating material with respect to the outer surface area of the outer box excluding the door portion of the refrigerator or the like Can be greatly improved.
- the coverage of the vacuum heat insulating material with respect to the surface area of the outer box which was difficult in the past, of 80%.
- a long fiber of the organic fiber 2 having a substantially cylindrical container such as a compressor 600 or a tank and having a length equal to or longer than the length of the core material sheet (or the fiber assembly 1) whose end face is cut in the core material 5. Since the vacuum heat insulating material of the present embodiment using the above is disposed around a substantially cylindrical container, a device having good heat insulating performance can be obtained.
- a resin fiber for example, LCP or PPS
- a high temperature resistance can be used for the organic fiber 2.
- the vacuum heat insulating material of the present embodiment is disposed outside the heat insulating material of the separate member, such as a heat insulating material such as urethane foam and polystyrene having high temperature resistance, around the substantially cylindrical container.
- a heat insulating material such as urethane foam and polystyrene having high temperature resistance
- Equipment such as a machine and a water heater can be obtained.
- a substantially cylindrical container such as a compressor 600 or a hot water storage tank is provided, and the core members 5, 550, 569 have bending portions 55, 56 (such as recesses by laser processing) and bending portions 59 (first slit portion 57).
- a concave portion by the second slit portion 58) and a concave portion 760x (a concave portion by the third slit portion 560K) are provided, and the vacuum heat insulating materials 700, 701, 750, and 760 are bent by the bent portions 55 and 56, the bent portion 59 and the concave portion.
- the through-hole 72 and the cutting can be cut at low cost. Since the vacuum heat insulating material that can easily process the opening such as the notch 73 can be disposed, it is possible to provide a device that is low in cost and has a high degree of freedom in disposition, good recyclability, and high heat insulation performance.
- heated and melted organic resin such as polyester or polystyrene is continuously extruded from a plurality of nozzles arranged in a row with a predetermined width.
- Outer packaging 4 is provided with an outer packaging material sealing step for sealing the sealing portion 45 of the insertion slot 4a, so that continuous formation of organic fibers can be performed easily, and the fiber assembly 1 made of continuous fibers of organic fibers can be easily formed. it can. Further, by adjusting the extrusion amount (discharge amount) of the molten resin and the speed of the conveyor, it is possible to easily manufacture the fiber assembly 1 having a different thickness or the fiber assembly 1 having a different basis weight. Moreover, the fiber diameter of an organic fiber can be easily changed by changing the hole diameter of a nozzle.
- the remaining organic fibers 2 a may protrude or protrude from the sealing portion 45 of the outer packaging material 4 even if the end surface is cut. Therefore, it is possible to obtain a highly reliable vacuum heat insulating material in which the degree of vacuum is not easily lowered over a long period of time in which a seal failure is unlikely to occur.
- an extrusion process of continuously extruding heated and melted organic resins such as polyester and polystyrene from a plurality of nozzles arranged in a row with a predetermined width is also possible.
- a fiberizing process in which the resin extruded continuously from the nozzle in the extrusion process is cooled with cooling air, etc., and then stretched with compressed air, or fiberized, or in the vicinity of the nozzle hole in the resin extruded from the nozzle
- the extrusion amount (discharge amount) of the molten resin and the speed of the conveyor it is possible to easily manufacture the fiber assembly 1 having a different thickness or the fiber assembly 1 having a different basis weight.
- the fiber diameter of an organic fiber can be easily changed by changing the hole diameter of a nozzle.
- a core material processing process cuts an end surface, after laminating
- a core material processing process makes a sheet
- the area range which performs heat welding is 20% or less (preferably 15% or less, more preferably 8% or less) of the total area of the fiber assembly 1. Since the range is within the range, the organic fibers 2 are heat-welded with each other, the fiber aggregate 1 is less likely to be separated, the handling property and the handling strength are improved, and the organic fiber 2 is subjected to appropriate pressure and heat-welding. The increase in the contact area can be suppressed, the heat conduction from the heat-welded part due to the increase in heat transfer can be suppressed, and the deterioration of the heat insulation performance can be suppressed.
- the fabric weight of the fiber assembly 1 is manufactured core material so that 4.7 g / m 2 or more 26 g / m 2 or less, A continuous fiber assembly 1 of organic fibers can be easily manufactured.
- the weight basis weight is 4.7 g / m 2 or more, even if the organic fiber 2 is wound up by a roller, the organic fiber 2 is not cut and a highly reliable continuous organic fiber long fiber is obtained.
- the basis weight is 26 g / m 2 or less, the thermal conductivity is about 0.002 [W / mK] which is the thermal conductivity of the conventional general vacuum heat insulating material 7 in which the glass fiber is the core material 5. Therefore, vacuum heat insulating materials 7,700, 750, and 760 having high heat insulating performance can be obtained.
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Abstract
Description
(1)断熱性能が良く、生産性(特に芯材の生産性)に優れる。
(2)断熱性能が良く、しかも取り扱い性やリサイクル性に優れる。
(3)芯材に有機繊維集合体を使用した場合に、生産性に優れ、また真空成形時の圧縮力や温度による芯材の変形が少ない。
(4)穴加工や切り欠き加工や曲げ加工が容易でシール性も良好で低コストであり、断熱性能が良く、取り扱いが容易である。
(5)曲げ加工の曲げの大きさに合わせて曲げ加工部の形状や大きさを変更でき、製造が容易である。
(6)配管形状に沿った凹みを備える。
図1乃至図4は実施の形態1を示す図で、図1は真空断熱材7の模式図であって、不織布シートを複数積層した真空断熱材7の芯材5の斜視図、図2は真空断熱材7の模式図であって、不織布シート1枚における繊維の配向を表した側面図、図3は真空断熱材7の模式図であって、芯材5に厚みがある場合の繊維の配向具合を示す側面図、図4は真空断熱材7の構成を示す分解斜視図である。
図1において、芯材5は、例えば、少なくとも1つの端面がカットされたシート状の繊維集合体1(例えば、有機繊維2を使用した有機繊維集合体)を積層した積層構造を有している。すなわち、図1に示す芯材5は、略長方形状の繊維集合体1(例えば、有機繊維集合体)が複数積層されたのち、略長方形の4辺のうちの少なくと1辺がカットされたシート状を形成している。あるいは、略長方形状の繊維集合体1の4辺の少なくとも1辺がカットされた後に複数積層されて略長方形のシート状を形成している。尚、芯材5を、単に芯材と呼ぶ場合もある。
真空断熱材7の芯材5を形成する有機繊維2として本実施形態では有機繊維2を使用するようにしているが、この有機繊維2に用いる材料として、ポリエステルや、その他に、ポリプロピレン、ポリ乳酸、アラミド、LCP(液晶ポリマー)、PPS、ポリスチレンなどを用いることができる。また、芯材5の耐熱性を向上させたい場合は、有機繊維2にLCP(液晶ポリマー)やPPS(ポリフェニレンサルファイド)など耐熱性のある樹脂を使用すれば良い。また、圧縮クリープ特性を向上させたい場合は、繊維径の大きなものを使用すれば良い。また、上記の樹脂を混合させて使用すれば、圧縮クリープ特性の優れた耐熱性が高く断熱性の高い真空断熱材7が得られる。ポリスチレンは、固体熱伝導率が小さく断熱材の断熱性能の向上が期待でき、しかも安価に製造できる。
芯材5を形成する繊維集合体1(有機繊維集合体、シート状集合体に同じ)は、製造したい幅に対して横一列に並んだいくつものノズルから加熱溶融したポリエステル樹脂やポリスチレン樹脂などの樹脂を、コンベア上に自由落下させ、コンベアを任意の速度で動かしながら加圧ローラで加圧して円筒状の原反用ローラに巻き取って略円筒状の原反ロール素材を製造する。繊維集合体1の嵩密度は、溶融樹脂の吐出量とコンベアの速度により調整し、厚さの異なる繊維集合体1を得ることができる。
本実施の形態1では繊維集合体1として、例えば、有機繊維集合体を使用するが、この有機繊維集合体の繊維径は、これを成形するノズル径により調整し、約15μmとした。断熱性能上は、繊維径はより細い方が良い。理論的に繊維径は、真空断熱材7の内部真空度と繊維で細分化される空間距離、気体分子の自由行程距離の関係から小さいほうが好ましい。繊維径は、15μm以下が望ましく、好ましくは10μm以下が良く、平均繊維径が9μm程度のものを使用すれば良い。
次に、得られたシート状の繊維集合体1を、例えば所定の大きさであるA4サイズ(幅210mm×長さ297mm)になるように端面1aをカット(裁断)する。これらを、複数層(例えば25層)に積層して端面5aがカットされた所定の大きさと厚さの芯材5が形成される。芯材5は、シート状の繊維集合体1を複数積層した後に端面5aをカットして所定の大きさに形成しても良い。なお、積層する枚数は、得られた繊維集合体1の厚さと製造したい真空断熱材7の厚さを基に任意に設定して良い。
真空断熱材7の外包材4(図4)には、厚さ5μm以上100μm以下のラミネートフィルムを使用している。本実施の形態では、例えば、ナイロン(6μm)、アルミ蒸着PET(ポリエチレンテレフタレート)(10μm)、アルミ箔(6μm)、高密度ポリエチレン(50μm)で構成されるガスバリア性のあるプラスチックラミネートフィルムを使用している。
真空断熱材7の製造は、先ず開口部4aを有する袋状である外包材4に所定の大きさと厚さの芯材5を挿入し、開口部4aが閉まらないように固定して恒温槽にて約105℃の温度下で半日(約12時間)乾燥を行った。その後、真空包装後の残存ガスや経時的に放出される芯材5からのアウトガス、外包材4のシール層を通して進入する透過ガスを吸着するための吸着剤6(ガス吸着剤や水分吸着剤など)をフィルム袋(外包材4)内に挿入し、柏木式真空包装機(NPC社製;KT-650)にて真空引き(減圧処理)を行った。真空引きは、チャンバ内真空度が1~10Pa程度になるまで行い、そのままチャンバ内でフィルム袋(外包材)4の開口部4aをヒートシールして板状の真空断熱材7を得た。
上述のようにシート状の繊維集合体1を所定の大きさにカットして複数枚積層して芯材5を形成して真空断熱材7を製造しても良いし、シート状の繊維集合体1を複数積層した後に端面5aをカットして所定の大きさに形成して芯材5を形成して真空断熱材7を製造しても良いが、ここでは、芯材5の別の製造方法について説明する。連続したシート状繊維集合体1J(例えば、有機繊維集合体)を連続してコイル状に巻き取って芯材5を製造する方法について説明する。
次に図9に基づいて、本実施の形態での真空断熱材7の製造方法について説明する。図9は真空断熱材の製造方法を表す図である。図9において、図9(a)~(i)は、真空断熱材7の製造の工程を表している。
また、芯材5を外包材4に挿入する場合には、連続したシート状繊維集合体1Jの長さ方向の2つの折れ曲がり端部5fのうち、連続したシート状繊維集合体1Jの巻き終わり端部1Jeが外包材の開口部4aに引っ掛かってばらけない方の折れ曲がり端部5faから挿入するようにしている。例えば、図5に示すように巻き終わり端部1Jeの位置に対し、連続したシート状繊維集合体1Jの巻き方向上流側(巻き方向反対側)の折れ曲がり端部5fa側から挿入すれば良い。すなわち、本実施の形態では、所定の幅を有し、長さ方向に連続したシート状の繊維集合体1Jを内側から外側に向かって巻きつけて平板状に形成した芯材5を、芯材5の長さ方向の2つの折れ曲がり端部5fのうち、連続したシート状繊維集合体1Jの巻き終わり端部1Je位置に対して巻き方向上流側の折れ曲がり端部5fa側からガスバリア性を有する外包材4の開口部4aから外包材4内に挿入する芯材挿入ステップと、芯材5が挿入された状態の外包材4の内部を減圧し開口部4aをシールする外包材シールステップと、を備えている。このようにすれば、芯材5を外包材4の開口部4aから挿入する場合に巻き終わり端部1Jeがばらけて開口部4aに引っ掛かったりしないので、芯材5が外包材4にスムーズに挿入でき、挿入性が大幅に改善でき、短時間で真空断熱材7が製造できる。また、巻き終わり端部1Jeがはがれたり、あるいはばらけないように接着剤などで芯材5に固定する必要もなくなるので、安価にできる。
次に原反ローラ1301を複数組み合わせて芯材5,550を製造する方法について説明する。図12乃至図15は実施の形態1を示す図で、図12は原反ロールを複数組み合わせて1つの大きな幅を有する組み合わせ原反ロールの構成を表す図、図13は組み合わせ原反ロールを2つ使用して巻枠に巻き取る場合の巻き取り装置の模式図、図14は組み合わせ原反ロールを2つ(上側原反ロール、下側原反ロール)使用する巻き取り装置にて巻き取られる有機繊維集合体の構成を表す模式図、図15は組み合わせ原反ロールを2つ使用する巻き取り装置にて巻き取られた芯材の断面図である。
以上は、シート状の繊維集合体1を所定の大きさにカットして複数枚積層して芯材5を形成して真空断熱材7を製造したり、シート状の繊維集合体1を複数積層した後に端面5aをカットして所定の大きさに形成して芯材5を形成して真空断熱材7を製造する場合(芯材の製造方法1)や、連続したシート状繊維集合体1J(例えば、有機繊維集合体)を連続してコイル状に巻き取って芯材5を製造する方法(芯材の製造方法2)や、原反ロールを幅方向に複数組み合わせて1つの大きな幅を有する組み合わせ原反ロール(たとえば組み合わせ原反ロール1305,1306)を複数組み合わせてシート面に対して略直角方向に重ねた状態で巻き取って芯材5,550を製造する方法(芯材の製造法3)について説明した。
第1の繊維集合体と第3の繊維集合体が、第1の繊維集合体1Kあるいは第3の繊維集合体1、1Jのシート面に対して略直角方向に重ねられた状態で内側から外側に向かって連続してコイル状に巻かれて平板状に成形された繊維集合体の積層構造から構成された芯材と、
芯材を内部に収納し、内部が減圧された状態で周囲がシールされるシール部を有するガスバリア性の外包材と、
外包材の内部が略真空状態でシール部をシールすることで外包材を密封して製造された真空断熱材を備えたので、原反ロールを所定幅にカットした残りの耳部原反ロールなどの端材を効率良く使用できるので、従来は廃却していた耳部などの端材の有効活用が行える。
(繊維集合体の厚さ)
以下、繊維に長繊維の有機繊維2を使用し、繊維集合体1に有機繊維集合体を使用した場合について説明する。まず、有機繊維集合体の厚さの断熱性能に及ぼす影響をについて、本実施の形態の繊維集合体1を積層した芯材5,550を使用した真空断熱材7,750を実施例1~4として、比較例1(綿状芯材)との比較を行った。その比較結果について説明する。
(繊維直径と繊維間距離)
次に有機繊維2の直径と繊維間距離とが断熱性能に及ぼす影響について説明する。
(加熱溶着の影響)
次に芯材5,550に繊維集合体1を使用し、繊維集合体1がエンボス加工110による熱溶着を施した不織布である場合の目付けの断熱性能への影響を説明する。
(長繊維、短繊維)
ここで、連続した長繊維を用いたために重量目付けが140[g/m2]以上で断熱性能がよくなることを実証するため、比較例2のような仕様の短繊維を芯材5とした真空断熱材7を作成して比較した。ここで、比較例2の芯材5に使用した有機繊維2は、繊維長が1枚のシート厚さよりも長く積層後のシートの厚さ(5mm~10mm程度)と同等程度以下である5~7mm程度の短い繊維長の短繊維を使用した。
(加熱溶着貫通、非貫通)
次にエンボス加工110が厚さ方向に貫通する場合と貫通しない場合での断熱性能の比較を行ったので、その結果を説明する。上述の真空断熱材7では、エンボス加工110が貫通した場合に低目付け(70[g/m2]以下が良く、好ましくは26[g/m2]以下)にすることで断熱性能を向上することができることを説明した。ここでは、エンボス加工110が一枚のシートの厚さ方向に貫通する場合と、シートの厚さ方向に貫通しない場合(シートの表裏面のみにエンボス加工を設ける場合)とで、断熱性能が変化するかの確認を行った。
(加熱溶着なし)
ここで、芯材5,550の取り扱い性の問題から、繊維集合体1のシートを形成する場合に、有機繊維2x、有機繊維2y同士を熱ローラーなどで加熱溶融(エンボス加工110)をする場合が多い。エンボス加工110を行う場合は、上述のように低目付けで断熱性能が良くなることを説明したが、低目付けの不織布では、一枚のシートの厚さが薄くなり、所定の厚さの真空断熱材7,750を得るための積層枚数が多くなってしまう。そのため、不織布製造ラインのスピードが不足したり、積層工程の時間が長くなるなど、生産性が低下する。したがって、本実施の形態に係る繊維集合体1は、ここでは、エンボス加工110などによる加熱溶着をしない場合の断熱性能について説明する。エンボス加工110などによる加熱溶着をしていない場合は、伝熱パスを減らせるため、断熱性能が向上すると考えられる。
(繊維の断面形状)
次に、有機繊維2の断面形状と断熱性能の関係について説明する。上述した有機繊維2の断面形状は略円形であったが、繊維集合体1を構成する有機繊維2の断面形状を略円形以外の異形断面である三角形断面とした場合について説明する。異形断面の有機繊維2を用いて繊維集合体1を製造し、300枚積層して芯材5,550を得、上述の方法と同様の方法で真空断熱材7,750を製造した場合を例に説明する。
(貫通穴、切り欠きなどの開口部)
次に真空断熱材7,750の製造工程でのクリープによる歪の大きさや変形などを比較するために、上述した方法で真空断熱材7、750を作成した後、真空断熱材7,750の厚みを測定した。そして約60℃の恒温槽に入れた後、約11時間温度加熱してから取り出し、再度真空断熱材7,750の厚みを測定した。
圧縮歪σ=(tB-tA)/tA
ここで、
tA:加熱する前の真空断熱材7の厚み
tB:60℃、11時間加熱した後の真空断熱材7の厚み
(貫通穴、切り欠き)
本実施の形態では、真空断熱材7に貫通穴や切り欠きなどの貫通する開口部70を設けるようにしている。図31乃至図33は実施の形態1を示す図で、図31は開口部を有する真空断熱材7,750の正面図、図32は芯材5,550に短繊維を使用した場合の真空断熱材7,750の芯材5,550の開口部の様子を表す図、図33は真空断熱材7,750の芯材5,550の開口部外周周辺にエンボス加工110などの熱溶着部を設ける例を示す図である。
次に本発明の真空断熱材7の冷蔵庫への適用の一実施例について説明する。
図35乃至図37は実施の形態1を示す図で、図35は冷蔵庫100の断面図、図36は図35に示す冷蔵庫100の断熱仕切りに使用される真空断熱材7,700,750の芯材5,550を表す模式図、図37は冷蔵庫100の断熱仕切りに使用される真空断熱材7を表す模式図である。
Claims (37)
- 繊維がシート状に形成された繊維集合体の積層構造で構成され、所定の長さあるいは幅で端面がカットされたカット部を有する芯材と、前記芯材を内部に収納し、前記芯材の外形の大きさよりもシール長さ分だけ大きい範囲でシールするシール部を有し、内部を減圧した状態でシールするガスバリア性の外包材と、を備え、前記繊維に前記芯材の長さあるいは幅と同等程度以上に連続した繊維を使用し、カットにより生じた残存繊維が前記カット部よりはみ出すのを抑制するようにしたことを特徴とする真空断熱材。
- 前記芯材が、所定の幅を有し、長さ方向に連続したシート状の繊維集合体が内側から外側に向かって巻かれた積層構造で構成された平板状であることを特徴とする請求項1に記載の真空断熱材。
- 前記外包材は前記芯材を挿入する開口部を備え、前記芯材は前記芯材の巻き方向の2つの端部のうち、前記繊維集合体の巻き方向上流側の端部側から前記外包材内に挿入されていることを特徴とする請求項2に記載の真空断熱材。
- 前記芯材は、前記繊維集合体の巻き終わり端部が前記芯材の巻き方向の2つの端部のうちのいづれかの端部近傍に位置するようにしたことを特徴とする請求項2に記載の真空断熱材。
- 前記外包材は、前記芯材を挿入する開口部を備え、前記繊維集合体の巻き終わり端部が位置しない他方の端部側から前記芯材を前記外包材内に挿入するようにしたことを特徴とする請求項4に記載の真空断熱材。
- 前記芯材の長さあるいは幅と略同等以上の長さの有機繊維を使用して繊維集合体を形成したことを特徴とする請求項1または請求項2に記載の真空断熱材。
- 前記繊維集合体に有機繊維をシート状に形成して加熱溶着が施された有機繊維集合体を使用し、前記加熱溶着部が前記繊維集合体の表面から裏面へ貫通する場合は、前記繊維集合体である不織布の重量目付けが4.7g/m2以上70g/m2以下、あるいは140g/m2以上198g/m2以下とし、前記加熱溶着部が前記繊維集合体の表面から裏面へ貫通しない場合は、前記繊維集合体である不織布の重量目付けが4.7g/m2以上130g/m2以下としたことを特徴とする請求項1乃至6のいずれかに記載の真空断熱材。
- 前記繊維集合体に有機繊維をシート状に形成して加熱溶着が施された有機繊維集合体を使用し、前記有機繊維集合体は、前記加熱溶着の占める割合を全面積(シート面積)の3%以上20%以下として圧縮歪による変形と断熱性能低下の両方を抑制するようにしたことを特徴とする請求項1乃至6のいずれかに記載の真空断熱材。
- 前記有機繊維集合体の重量目付けを85[g/m2]以上198[g/m2]以下としたことを特徴とする請求項8に記載の真空断熱材。
- 所定の幅になるように幅方向端面がカットされたカット部を有し、長さ方向に連続したシート状に形成された繊維集合体が内側から外側に向かって長さ方向に連続して巻かれて形成された芯材と、前記芯材を内部に収納し、前記カット部を有する芯材の外形よりもシール長さ分だけ大きい範囲で、前記芯材の周囲をシールするシール部を有するガスバリア性の外包材と、を備え、前記繊維集合体を形成する繊維に前記芯材の幅と同等かそれ以上の長さの長繊維を使用するようにしたことを特徴とする真空断熱材。
- 前記芯材は、平板状に形成されていることを特徴とする請求項10に記載の真空断熱材。
- 前記外包材は前記芯材を挿入する開口部を備え、前記芯材は前記芯材の巻き方向の2つの端部のうち、前記繊維集合体の巻き方向上流側の端部側から前記外包材内に挿入されていることを特徴とする請求項10に記載の真空断熱材。
- 前記繊維集合体の外周側の巻き終わり端部が前記芯材の巻き方向の2つの端部のうちのいづれかの端部近傍に配置されていることを特徴とする請求項10に記載の真空断熱材。
- 前記外包材は、前記芯材を挿入する開口部を備え、前記繊維集合体の巻き終わり端部が位置しない他方の端部側から前記芯材を前記外包材内に挿入するようにしたことを特徴とする請求項10に記載の真空断熱材。
- 前記芯材が、長さ方向に連続したシート状の繊維集合体が幅方向に複数隣接して並んだ第1の繊維集合体と、前記第1の繊維集合体の前記シート面に対して略直角方向に重なるように設けられ、長さ方向に連続したシート状の繊維集合体が幅方向に複数隣接して並んだ第2の繊維集合体と、前記第1の繊維集合体と前記第2の繊維集合体が幅方向に所定量Xbだけずれた状態で重なって内側から外側に向かって連続して巻かれて平板状に成形されたものであることを特徴とする請求項1乃至請求項14のいずれかに記載の真空断熱材。
- 前記芯材が、長さ方向に連続したシート状の繊維集合体が幅方向に連続した第3の繊維集合体と、前記第3の繊維集合体の前記シート面に対して略直角方向に重なるように設けられた長さ方向に連続したシート状の繊維集合体が幅方向に所定間隔を介して複数並んだ第1の繊維集合体と、前記第3の繊維集合体と前記第1の繊維集合体が重なった状態で内側から外側に向かって連続して巻かれて平板状に成形されたものであることを特徴とする請求項1乃至請求項14のいずれかに記載の真空断熱材。
- 前記外包材内に挿入されて減圧された状態で前記第1の繊維集合体あるいは前記第2の繊維集合体の隣接する繊維集合体間のスリット部が平板状の表面、裏面において長さ方向に凹んだ形状であることを特徴とする請求項15または請求項16に記載の真空断熱材。
- 前記所定量Xbを7mm以上、前記外包材内で略真空状態の芯材の厚さtの3倍以下として前記芯材がばらばらになって断熱性能が低下するのを抑制するとともに、折り曲げ性も良好としたことを特徴とする請求項15に記載の真空断熱材。
- 前記第1の繊維集合体あるいは前記第2の繊維集合体を構成する複数の繊維集合体の少なくとも1つに稜線の揃っていない繊維集合体素材の幅方向端部を含む耳部繊維集合体を使用するようにしたことを特徴とする請求項15乃至請求項17のいずれかに記載の真空断熱材。
- 前記芯材が前記外包材内で減圧されてシールされた状態で前記芯材の長さ方向端部の幅方向に直角な断面形状が長さ方向外側に向かって厚さが小さくなる略三角形であることを特徴とする請求項10に記載の真空断熱材。
- 幅方向の少なくとも一方の端側に外方に突出する薄肉部を有することを特徴とする請求項15または請求項16に記載の真空断熱材。
- 外箱と、前記外箱の内側に配置された内箱とを備え、前記外箱と前記内箱との間に請求項16乃至請求項21のいずれかに記載の真空断熱材を配設するようにしたことを特徴とする断熱箱。
- 請求項16乃至請求項22のいずれかに記載の真空断熱材を使用し、前記真空断熱材を前記第1の繊維集合体あるいは前記第2の繊維集合体の隣接する繊維集合体間の接続部で所定角度で折り曲げ、上面、両側面、背面、底面を有する断熱箱体の少なくとも2つの連続する壁面に配置するようにしたことを特徴とする冷蔵庫。
- 貯蔵室の扉、あるいは、圧縮機を収容する機械室と冷気を生成する冷却器を収容する冷却器室との間の断熱壁に請求項1乃至21のいずれかに記載の真空断熱材を配設したことを特徴とする冷蔵庫。
- 前記真空断熱材に貫通穴あるいは切り欠きなどの開口部を設けて前記開口部を前記圧縮機と前記冷却器を接続する配管位置に配置して前記配管が前記真空断熱材を通過するようにしたことを特徴とする請求項22または請求項23に記載の冷蔵庫。
- 略直方体状の形状をした筐体と、前記筐体内をファンが収容されるファン室と圧縮機が収容される機械室とを仕切る仕切り壁と、前記機械室の内部あるいは外部の少なくとも一部に配設された請求項1乃至21のいずれかに記載の真空断熱材と、を有する室外機を備えたことを特徴とする冷凍・空調装置。
- 略直方体状や略円筒形状をした筐体と、前記筐体内に収納されて水やお湯を溜める略円筒形の貯湯タンクと、を備え、前記筐体内面壁の全部、あるいは少なくとも一部に請求項1乃至21のいずれかに記載の真空断熱材を配置したことを特徴とする給湯装置。
- 少なくとも上面、両側面、背面、前面、底面のうち、2つの連続する壁面を有する略直方体状の箱体を備えた機器において、芯材に曲げ加工部や折り曲げ部を設け、請求項1乃至請求項21のいずれかに記載の真空断熱材を前記曲げ加工部や前記折り曲げ部より所定角度に折り曲げて前記少なくとも2つの連続する壁面に配置するようにしたことを特徴とする機器。
- 圧縮機やタンクなどの略円筒形の容器を備え、芯材に前記芯材の長さと同等かそれ以上の有機繊維の長繊維を使用した請求項1乃至21のいずれかに記載の真空断熱材を前記容器の回りに配設したことを特徴とする機器。
- 所定の幅を有し、長さ方向に連続したシート状の繊維集合体が内側から外側に向かって巻かれた状態で平板状に形成された積層構造の芯材と、
前記芯材を開口部から内部に収納し、内部が減圧された状態で前記開口部がシールされるガスバリア性の外包材と、を備え、
前記平板状の芯材は、長さ方向の2つの端部のうち、前記繊維集合体の巻き終わり端部位置に対して巻き方向上流側の端部側から前記開口部内に挿入されていることを特徴とする真空断熱材。 - 所定の幅を有し、長さ方向に連続したシート状の繊維集合体を内側から外側に向かって巻きつけて平板状に形成した芯材を、前記芯材の長さ方向の2つの端部のうち、前記繊維集合体の巻き終わり端部位置に対して巻き方向上流側の端部側からガスバリア性を有する外包材の開口部から前記外包材内に挿入する芯材挿入ステップと、
前記芯材が挿入された状態の前記外包材の内部を減圧し前記開口部をシールする外包材シールステップと、を備えたことを特徴とする真空断熱材の製造方法。 - 所定幅にカットされた略円筒形の原反ロールに巻きつけられた所定の幅を有する前記繊維集合体を所定回数分だけ巻枠に巻き取る巻き取りステップと、前記巻枠に巻き取られた前記繊維集合体を切断する切断ステップと、前記巻枠に所定回数分だけ巻き取られて切断された前記繊維集合体を前記巻枠より抜き取る分離ステップと、前記分離ステップにて前記巻枠より抜き取られた前記繊維集合体を平板状の芯材に成形する成形ステップと、を備えたことを特徴とする請求項31に記載の真空断熱材の製造方法。
- 前記分離ステップは、前記巻枠に所定回数分だけ巻き取られて切断された前記繊維集合体をクランプ部材にてクランプするクランプステップと、前記クランプステップにてクランプされた前記繊維集合体の前記巻枠に対する張力をゆるめる繊維集合体張力緩和ステップと、前記張力緩和ステップにて張力が緩められた繊維集合体を前記巻枠より抜き取る巻枠除去ステップ、とを供えたことを特徴とする請求項32に記載の真空断熱材の製造方法。
- 前記成形ステップは、前記クランプ部材を2つ使用して前記繊維集合体を2箇所でクランプして前記2つのクランプ部材を略反対方向に可動させて芯材を平板状に成形するようにしたことを特徴とする請求項32に記載の真空断熱材の製造方法。
- 請求項32乃至請求項34のいずれかに記載の真空断熱材の製造方法によって製造されたことを特徴とする真空断熱材。
- 前記繊維集合体が連続した有機繊維をシート状に形成したものであることを特徴とする
請求項35に記載の真空断熱材。 - 請求項35に記載の真空断熱材を搭載したことを特徴とする冷蔵庫。
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WO2021166256A1 (ja) * | 2020-02-21 | 2021-08-26 | 三菱電機株式会社 | 空気調和機の室外機 |
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JP7292490B2 (ja) | 2020-02-21 | 2023-06-16 | 三菱電機株式会社 | 空気調和機の室外機 |
Also Published As
Publication number | Publication date |
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CN102686929B (zh) | 2015-11-25 |
EP2472164A1 (en) | 2012-07-04 |
US20120196059A1 (en) | 2012-08-02 |
CN102686929A (zh) | 2012-09-19 |
JPWO2011048824A1 (ja) | 2013-03-07 |
US9103482B2 (en) | 2015-08-11 |
JP5362024B2 (ja) | 2013-12-11 |
EP2472164A4 (en) | 2014-01-29 |
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