JP2008202709A - Arranging method of vacuum heat insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set a flat surface type vacuum insulating material on a structure having a curved surface by directly adhering it closely to the surface. <P>SOLUTION: This vacuum heat insulating material 31 sealing the inside of a jacket material 13 by decompressing it by covering a plate type core material 12 having two heating surfaces facing each other with the gas barrier type jacket material 13 has a net type recessed part 32 bent by forming a plurality of bending lines in three directions or more on a part covering at least one of the heating surfaces of the core material 12 on the jacket material 13, and the vacuum heat insulating material 31 is arranged so as to run along the curved surface of a heat insulated body by deforming it by bending it at a plurality of locations of the net type recessed part 32 so as to make it run along a shape of the curved surface to arrange it on the heat insulated body. Consequently, it is possible to directly adhere and set the vacuum heat insulating material 31 on the surface of the structure even when the surface of the structure on which the vacuum heat insulating material 31 is set has various curved surfaces. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method of disposing a vacuum heat insulating material on the surface of a structure having a curved surface.

  The vacuum heat insulating material is a heat insulating material in which a core material made of a porous material is covered with a gas barrier outer covering material, and the inside is reduced in pressure and sealed, and the shape thereof is a board-like flat plate. Therefore, the application method is affixed to a planar portion of the surface of the structure to be heat-insulated, or disposed in parallel with the surface of the structure via a support such as a multilayer with rigid urethane foam or polystyrene foam. It is common to apply.

  On the other hand, a method of imparting flexibility to a vacuum heat insulating material and using it for a body warming device has been reported (for example, see Patent Document 1).

  A conventional vacuum heat insulating material will be described with reference to FIG. FIG. 9 is an external view of a conventional vacuum heat insulating material. In FIG. 9, the vacuum heat insulating material 1 has a configuration in which a core material 3 is vacuum-sealed in an outer cover material 2 made of a film obtained by laminating a plastic film and a metal foil or a metal vapor deposition film. The core material 3 is formed with lines 4 by pressurization or bending.

In the above configuration, when an external force is applied to the vacuum heat insulating material 1, the vacuum heat insulating material 1 can be easily deformed around the line 4 of the core material 3. That is, there is an effect of having substantial flexibility with respect to external force.
JP 61-173928 A

  However, in the above-described conventional configuration, the number of lines 4 provided to the vacuum heat insulating material 1 is small, that is, a total of four lines each having two vertical and horizontal lines, and the direction of the folding line formed by bending the line 4 is substantially the line 4 Since there are only two directions in which are formed, flexibility of flexibility is lowered. Therefore, it has been difficult to cover the surface of a heat-insulated body having a gently curved surface or a complicated curved surface.

  The present invention provides a vacuum heat insulating material arrangement that enables the vacuum heat insulating material to be installed in close contact with the surface even when the surface of the structure on which the vacuum heat insulating material is to be installed has various curved surfaces. The purpose is to provide an installation method.

  In order to achieve the above object, the vacuum heat insulating material disposing method of the present invention covers a plate-like core material having two opposing heat transfer surfaces with a gas barrier outer covering material, and the inside of the outer covering material. A vacuum heat insulating material sealed under reduced pressure, wherein the vacuum heat insulating material has a plurality of folding lines in three or more directions in a portion covering the heat transfer surface of at least one of the core materials in the jacket material. The vacuum heat insulating material is bent at a plurality of positions of the net-like concave portion so as to conform to the shape of the curved surface on which the vacuum heat insulating material is to be disposed in the body to be insulated. The said vacuum heat insulating material is arrange | positioned so that it may deform | transform and follow the curved surface of a to-be-insulated body.

  Thus, in the case where the surface of the structure to be heat-insulated has various curved surfaces, the vacuum heat-insulating material includes at least one of the core materials in the jacket material so that a plurality of folding lines in three or more directions can be formed. Since the net-like recesses that can be bent by forming a plurality of fold lines in three or more directions are formed in the portion covering the heat transfer surface, the core material forms fold curves in three or more directions by the net-like recesses. Since the vacuum heat insulating material can be deformed so as to be bent along the surface of the structure, the net-like recess is formed so as to follow the shape of the curved surface on which the vacuum heat insulating material is to be disposed in the structure (insulated body). It is possible to dispose the vacuum heat insulating material by bending it at a plurality of locations so that the vacuum heat insulating material is in close contact with the surface of the structure (insulated body) in a curved manner.

  Since the vacuum heat insulating material used in the present invention has a net-like recess that is bent by forming a plurality of folding lines in three or more directions in a portion covering at least one heat transfer surface of the core material in the jacket material. Since the core material is bent by forming a fold line in three or more directions with a net-like recess, and the vacuum heat insulating material can be deformed along the surface of the structure, the vacuum heat insulating material in the structure (insulated body) The vacuum heat insulating material is deformed by bending at a plurality of locations in the net-like recesses so as to follow the shape of the curved surface to be disposed, and is directly adhered to the surface along the curved surface of the structure (insulated body). A vacuum heat insulating material can be provided.

  Therefore, the degree of freedom of application of the vacuum heat insulating material is expanded, and application to a structure having a curved surface that has been difficult to apply until now becomes possible.

  Moreover, since it can arrange | position closely along a curved surface, since the influence of the convection of the air layer which exists in the clearance gap between a vacuum heat insulating material and a to-be-insulated body can be excluded, the heat insulation effect improves.

  According to a first aspect of the present invention, there is provided a vacuum heat insulating material arranging method in which a plate-shaped core material having two opposing heat transfer surfaces is covered with a gas barrier outer covering material, and the interior of the outer covering material is covered. A vacuum heat insulating material sealed under reduced pressure, wherein the vacuum heat insulating material has a plurality of folding lines in three or more directions in a portion covering the heat transfer surface of at least one of the core materials in the jacket material. The vacuum heat insulating material is bent at a plurality of positions of the net-like concave portion so as to conform to the shape of the curved surface on which the vacuum heat insulating material is to be disposed in the body to be insulated. The said vacuum heat insulating material is arrange | positioned so that it may deform | transform and it may follow the curved surface of a to-be-insulated body.

  Therefore, in the case where the surface of the structure to be heat-insulated has various curved surfaces, the vacuum heat-insulating material includes at least one of the core materials in the outer-coating material so that a plurality of folding lines in three or more directions can be formed. Since a net-like concave portion that is bent by forming a plurality of folding lines in three or more directions is formed in a portion covering the heat transfer surface, the core material forms a folding curve in three or more directions by the net-like concave portions. Since the vacuum heat insulating material can be deformed so as to be bent along the surface of the structure, the net-like concave portion of the structure (heat-insulated body) is arranged along the curved surface to be provided with the vacuum heat insulating material. It is possible to dispose the vacuum heat insulating material by bending it at a plurality of locations, and to directly adhere to the surface along the curved surface of the structure (insulated body).

  Therefore, the degree of freedom of application of the vacuum heat insulating material is expanded, and application to a structure having a curved surface that has been difficult to apply until now becomes possible.

  Moreover, since it can arrange | position closely along a curved surface, since the influence of the convection of the air layer which exists in the clearance gap between a vacuum heat insulating material and a to-be-insulated body can be excluded, the heat insulation effect improves.

  According to a second aspect of the present invention, there is provided a vacuum heat insulating material disposing method, wherein the mesh-shaped recess in the first aspect of the invention is a continuous body having a basic shape of any one of a substantially triangular shape, a substantially square shape, and a substantially hexagonal shape. And after a vacuum heat insulating material preparation, it shape | molds by a compression process.

  Therefore, the net-like recesses in the part covering the at least one heat transfer surface of the core material (core material part) in the jacket material are the basic shapes of triangles, squares, and hexagons that are generally used industrially. Therefore, existing members and molds can be used.

  In addition, a concave mold provided in a net shape having a basic shape of a substantially triangular shape, a substantially rectangular shape, or a substantially hexagonal shape is excellent in productivity because it can be formed by compression processing.

  Therefore, even if it is a board-like vacuum heat insulating material, it becomes possible to bend at a plurality of locations in three or more directions with a net-like concave portion in the core material portion, so that it follows the surface of the heat-insulated body having a curved surface. It can arrange | position closely.

  Note that the folding line is a center line of bending formed by bending the core material portion in the net-like recesses of the vacuum heat insulating material, and does not necessarily need to be a straight line, and is a valley fold or a mountain fold. But no problem.

  On the other hand, a vacuum heat insulating material is a material in which a core material having a high gas phase ratio, which is an aggregate, is covered with a gas barrier film or a covering material such as a container, and the inside is decompressed and sealed. It refers to a heat insulating material that exhibits high heat insulating performance by reducing the heat conduction of gas components by reducing the pressure to a level pressure.

  Explaining the constituent material of the vacuum heat insulating material, the material used for the core material is a porous body having a gas phase ratio of about 90% processed into a sheet or plate shape, and is foamed as an industrially usable material. Body, powder, and fiber body. These can use a well-known material according to the use use and required characteristic.

  Among these, as the foam, open-cell bodies such as urethane foam, styrene foam, and phenol foam can be used. As the powder, inorganic, organic, and mixtures thereof can be used, but industrially, those mainly composed of dry silica, wet silica, pearlite and the like are desirable. As the fibrous body, inorganic, organic, and mixtures thereof can be used, but inorganic fibers are advantageous from the viewpoint of cost and heat insulation performance. As an example of the inorganic fiber, a known material such as glass wool, rock wool, alumina fiber, or silica fiber can be used.

  The film that can be used as the covering material is preferably a laminate film having a high gas barrier property, and it is more desirable in terms of productivity and cost to use a plastic laminate film having a metal foil or a vapor deposition layer.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
The vacuum heat insulating material of Embodiment 1 of this invention is demonstrated. FIG. 1 is a plan view showing a state of the vacuum heat insulating material used in the method for arranging the vacuum heat insulating material according to the first embodiment of the present invention before the recess is formed, and FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. FIG. 3 is a plan view showing a state after forming a recess in the vacuum heat insulating material used in the vacuum heat insulating material disposing method in the first embodiment.

  The structure of the vacuum heat insulating material 11 shown in FIGS. 1 and 2 is such that a gas barrier plastic laminate film is welded to a core material 12 having a thickness of 4 mm made of glass wool having an average fiber diameter of 3 μm by thermoforming at a heat welding portion 14. Then, it is covered with a cover material 13 formed into a bag shape, and the cover material 13 is formed by being sealed under reduced pressure so that the inside of the cover material 13 becomes 10 Pa or less.

  At this time, the plastic laminate film is composed of a laminate film in which a PET film having a thickness of 25 μm, a 15 μm 6-nylon film, a 6 μm aluminum foil, and a 50 μm polyethylene film are laminated from the outermost layer. They are overlapped with each other and thermally welded at the heat welding portion 14 to be sealed.

  The flat surface portion of the core material 12 of the vacuum heat insulating material 11 thus manufactured (the portion covering at least one heat transfer surface of the core material 12 in the jacket material 13) is formed into a net-like shape having a quadrangular shape by compression processing. 3 was formed to produce the vacuum heat insulating material 31 shown in FIG.

  In addition, in the vacuum heat insulating material 31 of FIG. 3, the mesh-shaped recessed part 32 was shape | molded by the compression process so that the depth might be a maximum of 1.5 mm. Further, the quadrangle constituting the net-like recess 32 is formed so that one side has a length of 30 mm.

  Moreover, in FIG. 3, the arrow A to the arrow D show the direction of the folding line formed.

  The vacuum heat insulating material 31 produced in this way is bent at the net-like concave portion 32 to form a folding curve in four directions from arrow A to arrow D, and can be flexibly deformed. Therefore, it is possible to attach the structure having a gentle free-form surface to the surface.

  In addition, the magnitude | size of the square which comprises the net-shaped recessed part 32 can be changed according to the curvature of the curved surface of a to-be-insulated body.

  Further, the fin portion 15 is an ineffective heat insulating portion formed from the outer covering material 13 without the core material 12 therein, and when applied with a vacuum heat insulating material, it is subjected to processing such as bending as necessary. Can do.

  In the method of arranging the vacuum heat insulating material according to the present embodiment, the plate-like core material 12 having two opposing heat transfer surfaces is covered with a gas barrier outer covering material 13 and the inside of the outer covering material 13 is decompressed. It is the sealed vacuum heat insulating material 31, and the vacuum heat insulating material 31 forms a plurality of folding lines in three or more directions in a portion covering at least one heat transfer surface of the core material 12 in the jacket material 13. The vacuum heat insulating material 31 is deformed by being bent at a plurality of locations of the net-like concave portion 32 so as to follow the shape of the curved surface on which the vacuum heat insulating material 31 is to be disposed in the body to be insulated. The vacuum heat insulating material 31 is disposed along the curved surface of the heat insulating body.

  Therefore, even when the surface of the structure to be heat-insulated has various curved surfaces, the vacuum heat-insulating material 31 includes the core material 12 of the jacket material 13 so that a plurality of folding lines in three or more directions can be formed. Since a net-like recess 32 that is bent by forming a plurality of folding lines in three or more directions is formed in a portion that covers at least one heat transfer surface, the core 12 is a net-like recess 32 in three or more directions. Since the vacuum heat insulating material 31 can be deformed so as to be bent along the surface of the structure, the shape of the curved surface to be provided with the vacuum heat insulating material 31 in the structure (heat-insulated body) is formed. The vacuum heat insulating material 31 is deformed by being bent at a plurality of locations of the net-like recesses so as to be along, and the vacuum heat insulating material 31 is disposed in close contact with the curved surface of the structure (insulated body). can do.

  Therefore, the degree of freedom of application of the vacuum heat insulating material 31 is expanded, and application to a structure having a curved surface that has been difficult to apply until now becomes possible.

  Moreover, since it can arrange | position closely along a curved surface, since the influence of the convection of the air layer which exists in the clearance gap between the vacuum heat insulating material 31 and a to-be-insulated body can be excluded, the heat insulation effect improves.

  Further, the vacuum heat insulating material 31 used in the present embodiment is a continuous body in which the net-like concave portion 32 has a rectangular (quadrangle) basic shape, and is formed by compression processing after the vacuum heat insulating material 11 is manufactured. It is.

  Therefore, the net-like recessed part 32 which has in the part (core part part) which covers the at least one heat-transfer surface of the core material 12 in the jacket material 13 is based on the rectangle (square) used industrially generally. Since it is shaped, an existing member or mold can be used.

  In addition, a concave mold formed in a net shape having a basic shape of a rectangle (quadrangle) can be molded by compression processing, and thus has excellent productivity.

  Therefore, even the board-like vacuum heat insulating material 31 can be bent at a plurality of locations in three or more directions by the net-like concave portion 32 provided in the core material 12 portion. It can arrange | position closely so that it may follow.

(Embodiment 2)
The vacuum heat insulating material of Embodiment 2 of this invention is demonstrated. 4-8 is explanatory drawing which shows the pattern of the mesh-shaped recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention.

  These net-like recess patterns can be formed by compressing the vacuum heat insulating material 11 in the first embodiment.

  The vacuum heat insulating material 31 of the present embodiment was formed in the same manner as in the first embodiment except that the pattern of the net-like recesses was different.

  The basic shape of the substantially triangular shape, the substantially rectangular shape, and the substantially hexagonal shape constituting the net-like recess pattern of the vacuum heat insulating material 31 was formed so that one side of the basic shape was 20 to 40 mm.

  The vacuum heat insulating material 31 produced in this way is formed in three or four directions of folding lines, and can be bent at a net-like recess, and the surface of the structure having a gentle free-form surface Affixing to can be easily realized.

  In the present embodiment, the heat insulating material for the ceiling of the automobile is applied by being attached to the inner surface of the PET felt that is the interior material of the ceiling (not shown). As a result, in any of the patterns shown in FIGS. 4 to 8, it could be easily disposed on the inner surface of the PET felt.

  In addition, the pattern of the net-shaped recessed part shape | molded by the compression process to the vacuum heat insulating material of FIGS. 4-8 is demonstrated.

  FIG. 4 shows a net-like recess pattern 41 made of a continuous body having a quadrangle as a basic shape, and the directions of the folding lines formed by bending at the recesses are 4 of arrow E, arrow F, arrow G, and arrow H. There is a direction. In addition, the number of folding lines is determined by the number of folding lines and the number of squares that are basic shapes. The larger the number of folding lines and the number of squares, the larger the number of folding lines, and the larger the number of folding lines, It becomes easy to follow.

  FIG. 5 shows a net-like recess pattern 51 formed of a continuous body having a triangular base shape. The directions of the folding lines formed by bending at the recesses are four of arrow I, arrow J, arrow K, and arrow L. There is a direction. The number of folding lines is determined by the number of directions of the folding curves and the number of triangles as the basic shape. The number of folding lines increases as the number of directions of the folding curves and the number of triangles increases, and the number of folding curves increases as the number of folding curves increases. It becomes easy to follow.

  FIG. 6 shows a net-like recess pattern 61 made of a continuous body having a triangular base shape, and the directions of the folding lines formed by bending at the recesses are four of arrow M, arrow N, arrow O, and arrow P. There is a direction. The number of folding lines is determined by the number of directions of the folding curves and the number of triangles as the basic shape. The number of folding lines increases as the number of directions of the folding curves and the number of triangles increases, and the number of folding curves increases as the number of folding curves increases. It becomes easy to follow.

  FIG. 7 shows a net-like recess pattern 71 made of a continuous body having a triangular base shape, and the direction of the fold line formed by bending at the recess is four of arrow Q, arrow R, arrow S, and arrow T. There is a direction. The number of folding lines is determined by the number of directions of the folding curves and the number of triangles as the basic shape. The number of folding lines increases as the number of directions of the folding curves and the number of triangles increases, and the number of folding curves increases as the number of folding curves increases. It becomes easy to follow.

  FIG. 8 shows 81 patterns of a net-like concave portion made of a continuous body having a hexagonal basic shape, and there are three directions of folding lines formed by bending at the concave portion: an arrow U, an arrow V, and an arrow W. . In addition, the number of folding lines is determined by the number of folding lines and the number of hexagons that are basic shapes. The larger the number of folding lines and the number of hexagons, the larger the number of folding lines and the greater the number of folding lines, It becomes easy to follow the curved surface.

  The basic shape of the net-like concave portion may be applied in combination with the basic shape described above, but it is more desirable to determine the pattern so that the folding line is a straight line.

  In addition, as described above, the larger the number of folding lines, the easier it is to follow the curved surface of the body to be insulated, and it can be changed according to the curvature of the curved surface in order to dispose it on the curved surface of the structure that is the body to be insulated. However, the size of the basic shape for forming the net-like recess is preferably 20 to 50 mm on one side. If the length of one side of the basic shape is too large, it becomes difficult to follow the curved surface, and if it is smaller than this, the damage to the jacket material of the vacuum heat insulating material becomes large.

  Further, the depth of the net-like recesses needs to be changed depending on the thickness of the vacuum heat insulating materials 11 and 31, but it is desirable to apply the vacuum heat insulating materials 11 and 31 having a thickness of 10 mm or less. The maximum depth of the recess is preferably 20 to 50% of the thickness of the vacuum heat insulating materials 11 and 31.

  If the groove depth exceeds this range, there is a possibility that the quality may be affected by a decrease in adhesion to the curved surface or damage to the jacket material 13 of the vacuum heat insulating materials 11 and 31.

  The arrangement method of the vacuum heat insulating material of the present invention can be arranged in close contact with the curved surface even when the surface of the structure to be insulated has various curved surfaces. Therefore, the degree of freedom of application of the vacuum heat insulating material is expanded, and application to a structure that has been difficult to apply until now becomes possible.

  In particular, in an automobile ceiling having a gently curved surface, it can be directly disposed on the inner surface of an exterior material such as an iron plate or an interior material made of PET felt or the like constituting the automobile ceiling. Or it can apply easily, such as sticking directly, or arrange | positioning through felt etc.

The top view which shows the state before the recessed part formation of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 1 of this invention. A-A 'line sectional view of FIG. The top view which shows the state after the recessed part formation of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in the embodiment Explanatory drawing which shows the pattern of the net-like recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention. Explanatory drawing which shows another pattern of the net-shaped recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention. Explanatory drawing which shows another pattern of the net-like recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention. Explanatory drawing which shows another pattern of the net-like recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention. Explanatory drawing which shows another pattern of the net-like recessed part of the vacuum heat insulating material used for the arrangement | positioning method of the vacuum heat insulating material in Embodiment 2 of this invention. External view of a partially cutout of conventional vacuum insulation

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vacuum heat insulating material 12 Core material 13 Cover material 31 Vacuum heat insulating material 32 Net-like recessed part

Claims (2)

  A plate-like core material having two heat transfer surfaces facing each other is covered with a gas barrier outer covering material, and the inside of the outer covering material is decompressed and sealed, wherein the vacuum insulating material is A portion of the jacket material covering the heat transfer surface of at least one of the core members has a net-like recess that is bent by forming a plurality of folding lines in three or more directions, and the vacuum heat insulation in the insulator The vacuum heat insulating material is deformed so as to be along the curved surface of the body to be insulated by bending the plurality of portions of the mesh-like recesses to deform the vacuum heat insulating material so as to follow the shape of the curved surface on which the material is to be disposed. Arrangement method of vacuum insulation material to arrange.   The vacuum heat insulating material according to claim 1, wherein the net-like concave portion is a continuous body having a basic shape of any one of a substantially triangular shape, a substantially square shape, and a substantially hexagonal shape, and is formed by compression after the vacuum heat insulating material is manufactured. Arrangement method.