JP2012102894A - Insulated box, and insulated wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulated box that hardly generates a void and a heat insulating unfilled part in which a foam insulation is not filled, in a space to fill the foam insulation by a fin of a vacuum insulated panel.SOLUTION: A rugged sealing part is provided in which a ruggedness of a waveform alternately repeating a convex part and the concave part more than once on a surface of an outer covering material of the vacuum insulated panel 10. The vacuum insulated panel is fixed on a surface facing an inner box 3 of an outer box 2 so that the outer covering material side wherein the height difference between the convex part and the concave part on the surface of the outer covering material is larger is on the inner box 3 side, and the outer covering material side wherein the height difference between the convex part and the concave part of the surface of the outer covering material is smaller is on the outer box 2 side. A fin part in which at least one member of the rugged sealing part is rolled up on the outer covering material side wherein the height difference between the convex part and the concave part of the surface of the outer covering material is larger without being fixed to a core material part and thereby, suppressing generation of the void of a foam insulation 4 to be filled in the insulated box 1 and an unfilled part.

Description

  The present invention relates to a heat insulating box and a heat insulating wall in which a vacuum heat insulating material is disposed and filled with a foam heat insulating material.

  In recent years, as a measure against global warming, which is a serious global environmental problem, there has been an active movement to promote energy conservation in home appliances, equipment, and buildings such as houses, and a vacuum that has an excellent thermal insulation effect over the long term. Insulation is more demanded than ever.

  In general, a vacuum heat insulating material is formed by stacking two rectangular outer covering materials made of a gas barrier laminate film, and heat-welding the three peripheral edges of the overlapping outer covering materials to form one opening. Make a bag of jacket material, insert a core material with fine voids such as glass wool and silica powder into the bag of jacket material from the opening of the bag, decompress the inside of the bag of jacket material, and then bag These openings are hermetically sealed by thermal welding, and fins are formed on the four sides of the outer periphery of the vacuum heat insulating material.

  Further, the vacuum heat insulating material is a heat insulating material in which the heat conductivity of the gas is remarkably lowered by reducing the pressure inside the bag of the jacket material and keeping it in a vacuum, for example, a hard heat insulating box constituting a refrigerator. It is used by being embedded in a foam insulation such as polyurethane foam.

  However, when foaming heat insulation material is integrally foamed, near the fin part of the vacuum heat insulation material, the flowability of the foam heat insulation material is deteriorated, and voids and unfilled parts of the foam heat insulation material are generated, resulting in the heat insulation performance of the refrigerator. There is a problem of getting worse.

  Then, there exists what shortened the fin part by making the heat welding part other than the heat welding part of the covering material of one side which is an insertion port of a core material close to the edge of a core material (for example, refer patent document 1). ).

  Hereinafter, the conventional vacuum heat insulating material disclosed in Patent Document 1 will be described with reference to the drawings. FIG. 9 is a longitudinal sectional view when a conventional refrigerator-freezer is cut to the left and right. FIG. 10 is a cross-sectional view of a conventional vacuum heat insulating material.

  As shown in FIG. 10, the conventional vacuum heat insulating material 110 has a core material housed in a cover material 111 formed by bagging the peripheral edge portions of two gas barrier laminate films into a bag shape, The inside of the jacket material 111 is in a decompressed state.

  The core material is composed of an elastic inorganic fiber polymer 112 that is not solidified with a binder and a flexible inner bag 113 that encloses the inorganic fiber polymer 112, and a part of the inner bag 113 communicates the inside and the outside. A communicating part is provided. The core material is accommodated in the jacket material 111 so as to have an outer circumferential length that substantially matches the inner circumferential length of the jacket material 111.

  The core material is housed in the jacket material 111 in a state of having a restoring force to restore the outer circumference length larger than the inner circumference length of the jacket material 111, and the outer circumference length of the core material is inserted into the core material. The core material is restored to a state substantially the same as the opening circumferential length of the opening, and is stored in the jacket material 111.

Moreover, the jacket material 111 and the core material are each formed in a rectangular shape, and the jacket material 111 has a heat welded portion on the other three sides rather than a heat welded portion on one side that is an insertion port for the core material. In addition to being positioned close to the edge of the core material, only one side of the core material insertion hole (fin portion) is bent along the outer shape of the core material so as to overlap the core material. ing.

  In such a configuration, the inorganic fiber polymer 112 that is not solidified with the binder is stored in the flexible inner bag 113, and the inner bag 113 is depressurized in a state in which the inorganic fiber polymer 112 is compressed to be thin. The vacuum heat insulating material 110 is produced by molding the core material, storing the core material in the outer jacket material 111, and reducing the pressure in the outer jacket material 111 in a state where a part of the inner bag 113 is opened. .

  For this reason, since the fin part which is a part which does not pinch | interpose the core material of the jacket material 111 can be shortened in three sides of the vacuum heat insulating material 110, the flow inhibition effect of a foam heat insulating material can be reduced, and the work which folds a fin It is a reduction.

JP 2007-9928 A

  However, although the above-mentioned conventional vacuum heat insulating material 110 has a short fin, the gap between the fin of the heat insulating box body in which the vacuum heat insulating material 110 is disposed and the fin due to the wave of the fin and the warpage of the fin in all directions. Since the fluidity of the foam insulation material is hindered, voids (cavities) in the space filled with the foam insulation material and unfilled portions of the insulation material that do not fill with the foam insulation material occur, resulting in insulation properties However, there was a problem that appearance defects such as dents were generated in the housing of the heat insulation box.

  The present invention solves the above-described conventional problems, and a heat insulating box in which a void (cavity) or a foamed heat insulating material not filled with a heat insulating material is not easily generated in a space filled with the foam heat insulating material by the fin of the vacuum heat insulating material. The object is to provide a body or insulation wall.

  In order to achieve the above object, the heat insulating box of the present invention is configured by fixing one heat transfer surface of a vacuum heat insulating material having two heat transfer surfaces facing each other to the facing surfaces of the outer box or the inner box. The heat insulation box which filled the remaining space except the said vacuum heat insulating material part between the said outer box and the said inner box with the foam heat insulating material.

  The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. The core material is sealed under reduced pressure between the two outer cover materials arranged on the outer periphery of the core portion where the core material is between the two outer cover materials. The sealing part which has the fin-shaped fin part which consists only of material, and welded the outer peripheral parts of the two said jacket materials in order to seal the said core material in the said fin part is provided.

  When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material.

  In the vacuum heat insulating material, the outer cover material side having a larger height difference between the convex portion and the concave portion on the surface of the outer cover material is the outer casing or the inner box on the side where the vacuum insulating material is not fixed. Opposite the outer box or the inner box so that the outer jacket material side with the smaller height difference between the convex part and the concave part on the surface of the material is the side that fixes the vacuum heat insulating material, either the outer box or the inner box The fin portion provided with at least one side of the concave-convex sealing portion is not fixed to the core member portion, and the height difference between the convex portion and the concave portion of the surface of the jacket material is not fixed. Warps toward the larger outer jacket.

  In the above-described configuration, at least one of the sealing portions of the vacuum heat insulating material is the closest when the cross section when cut along a plane perpendicular to the peripheral edge of the closest covering material is viewed. The thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion and the portion other than the sealing portion as it goes from the peripheral edge of the outer covering material toward the inner periphery of the outer covering material. Waveform unevenness that repeats the thin wall part thinner than the part alternately several times, and repeats the convex part and the concave part alternately several times on the surface of the jacket material corresponding to the thick part and thin part The height difference between the convex portion and the concave portion of the surface of the outer cover material of the uneven sealing portion is different between the surface of one outer cover material and the surface of the other outer cover material. Since they are different from each other, the vacuum heat insulating material warps toward the outer covering material side where the height difference between the convex portion and the concave portion on the surface of the outer covering material is larger.

  And the vacuum heat insulating material is the surface of the outer cover material on the side where the outer surface of the outer cover material or the inner box is not fixed to the outer heat insulating material side where the difference in height between the convex portion and the concave portion of the surface of the outer cover material is large. Fix to the opposite surface of the outer box or inner box so that the outer jacket material side with the smaller height difference between the convex part and the concave part is the side fixing the vacuum heat insulating material, either the outer box or the inner box. When the fin part provided with the part is not fixed to the core part, the fin part provided with the uneven sealing part that is not fixed to the core part is the side where the vacuum heat insulating material is fixed to either the outer box or the inner box. Warps away from the direction.

  Therefore, the flow of the foam heat insulating material is not hindered when the remaining space excluding the vacuum heat insulating material portion between the outer box and the inner box is filled with the foam heat insulating material.

  This improves the fluidity of the foam heat insulating material during the foam growth of the foam heat insulating material without fixing the fin portion provided with the uneven sealing portion to the core material portion, and the foam heat insulating material due to the fin of the vacuum heat insulating material. It is possible to provide a heat-insulating box body in which a void (cavity) or a foamed heat insulating material that is not filled with a space is filled with a heat insulating material unfilled portion.

  In addition, another heat insulating wall of the present invention fixes one heat transfer surface of a vacuum heat insulating material having two heat transfer surfaces facing each other to a surface facing the other face material in one face material, It is the heat insulation wall which filled the remaining space except the said vacuum heat insulating material part between the two said facing materials facing each other with the foam heat insulating material.

  The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. A plate-shaped core material is sealed under reduced pressure between two outer cover materials arranged on the outer periphery of the core material portion where the core material is between the two outer cover materials. A sealing portion having a fin-like fin portion made of only the outer cover material, and heat-pressing the outer peripheral portions of the two outer cover materials to seal the core material in the fin portion. Is provided.

When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material.

  The vacuum heat insulating material is fixed such that the surface material side of the surface fixing the vacuum heat insulating material is the surface of the outer surface of the surface of the outer covering material where the height difference between the convex and concave portions is smaller. The fin portion provided with the concave / convex sealing portion on at least one side is not fixed to the core portion, and is on the outer jacket material side where the height difference between the convex portion and the concave portion on the surface of the outer jacket material is larger. It is warping.

  In the above-described configuration, at least one of the sealing portions of the vacuum heat insulating material is the closest when the cross section when cut along a plane perpendicular to the peripheral edge of the closest covering material is viewed. The thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion and the portion other than the sealing portion as it goes from the peripheral edge of the outer covering material toward the inner periphery of the outer covering material. Waveform unevenness that repeats the thin wall part thinner than the part alternately several times, and repeats the convex part and the concave part alternately several times on the surface of the jacket material corresponding to the thick part and thin part The height difference between the convex portion and the concave portion of the surface of the outer cover material of the uneven sealing portion is different between the surface of one outer cover material and the surface of the other outer cover material. Since they are different from each other, the vacuum heat insulating material warps toward the outer covering material side where the height difference between the convex portion and the concave portion on the surface of the outer covering material is larger.

  And the vacuum insulation material is the height of the convex part and the concave part of the surface of the jacket material on the face material side where the difference in height between the convex part and the concave part of the surface of the jacket material is larger, and the side of the jacket material is not fixing the vacuum thermal insulation material. Fix the fin part with the uneven sealing part to the core part, fixing the face material of the face material to the face material side facing each other so that the jacket material side with the smaller difference is the face material side fixing the vacuum heat insulating material When not fixed to the core part, the fin part provided with the uneven sealing part that is not fixed to the core part warps in a direction away from the face material side for fixing the vacuum heat insulating material.

  Therefore, the flow of the foam heat insulating material is not hindered when the remaining space excluding the vacuum heat insulating material portion between the two facing face materials is filled with the foam heat insulating material.

  This improves the fluidity of the foam heat insulating material during the foam growth of the foam heat insulating material without fixing the fin portion provided with the uneven sealing portion to the core material portion, and the foam heat insulating material due to the fin of the vacuum heat insulating material. It is possible to provide a heat insulating wall in which a void (cavity) or a foamed heat insulating material is not filled in a space filled with a heat insulating material that is not easily filled.

  According to the present invention, the fin portion provided with the uneven sealing portion that is not fixed to the core material portion is warped in the direction away from the face material side for fixing the vacuum heat insulating material, so that the fin portion provided with the uneven sealing portion. Even if the foam is not fixed to the core, the fluidity of the foam insulation is improved during the foam growth of the foam insulation, and the void (cavity) or foam insulation is filled in the space filled with the foam insulation by the fin of the vacuum insulation Therefore, it is possible to provide a heat insulating box or a heat insulating wall in which an unfilled portion of the heat insulating material that is not filled is difficult to occur.

  In addition, by providing the vacuum heat insulating material with a thin portion where the thickness of the heat-welded layer is thinner than the portion other than the sealing portion, the amount of gas and moisture entering from the end surface of the outer periphery of the jacket material is suppressed, and long-term Therefore, the heat insulation performance of the heat insulation box or the heat insulation wall containing the vacuum heat insulation material can be maintained over a long period of time.

Cross-sectional view of the heat insulation box in Embodiment 1 of the present invention Cross-sectional view showing a state during foam filling of the foam insulation of the heat insulation box of the same embodiment Sectional drawing of the vacuum heat insulating material used for the heat insulation box of the embodiment Sectional drawing which shows the heating compression jig used for formation of the uneven sealing part and uneven sealing part of the vacuum heat insulating material used for the heat insulation box of the embodiment The top view which shows the state before fin folding of the vacuum heat insulating material used for the heat insulation box of the embodiment The longitudinal cross-sectional view of the heat insulation box in Embodiment 2 of this invention The longitudinal cross-sectional view which shows the state at the time of foam filling of the foam heat insulating material of the heat insulation box of the embodiment Sectional drawing of the heat insulation wall in Embodiment 3 of this invention Vertical section of a conventional refrigerator-freezer Cross section of conventional vacuum insulation

  1st invention fixes one said heat-transfer surface of the vacuum heat insulating material which has two heat-transfer surfaces which oppose each other in the surface facing the inner box in an outer box, and is the said outer box and the said inner box. It is the heat insulation box which filled the remaining space except the said vacuum heat insulating material part in between with the foam heat insulating material.

  The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. The core material is sealed under reduced pressure between the two outer cover materials arranged on the outer periphery of the core portion where the core material is between the two outer cover materials. The sealing part which has the fin-shaped fin part which consists only of material, and welded the outer peripheral parts of the two said jacket materials in order to seal the said core material in the said fin part is provided.

  When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material.

  Further, in the vacuum heat insulating material, the height difference between the convex portion and the concave portion on the surface of the outer jacket material is larger on the outer casing material side on the inner box side, and the height difference between the convex portion and the concave portion on the surface of the outer jacket material is small. The fin portion provided with at least one side of the uneven sealing portion is fixed to a surface of the outer box facing the inner box so that the outer jacket material side is the outer box side, Without being fixed to the core part, the surface of the outer cover material is warped toward the outer cover material side where the height difference between the convex part and the concave part is larger.

  In the above-described configuration, at least one of the sealing portions of the vacuum heat insulating material is the closest when the cross section when cut along a plane perpendicular to the peripheral edge of the closest covering material is viewed. The thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion and the portion other than the sealing portion as it goes from the peripheral edge of the outer covering material toward the inner periphery of the outer covering material. Waveform unevenness that repeats the thin wall part thinner than the part alternately several times, and repeats the convex part and the concave part alternately several times on the surface of the jacket material corresponding to the thick part and thin part The height difference between the convex portion and the concave portion of the surface of the outer cover material of the uneven sealing portion is different between the surface of one outer cover material and the surface of the other outer cover material. Since they are different from each other, the vacuum heat insulating material warps toward the outer covering material side where the height difference between the convex portion and the concave portion on the surface of the outer covering material is larger.

  And the vacuum heat insulating material has a height difference between the convex part and the concave part on the surface of the outer cover material on the inner box side where the difference in height between the convex part and the concave part on the outer surface of the outer cover material is not fixed to the vacuum insulating material. The outer cover material side with the smaller difference is fixed to the surface facing the inner box in the outer box so that the side of the outer cover material fixing the vacuum heat insulating material is fixed. When not fixing, the fin part provided with the uneven sealing part which is not fixed to the core part warps in a direction away from the outer box side fixing the vacuum heat insulating material.

  Therefore, the flow of the foam heat insulating material is not hindered when the remaining space excluding the vacuum heat insulating material portion between the outer box and the inner box is filled with the foam heat insulating material.

  This improves the fluidity of the foam heat insulating material during the foam growth of the foam heat insulating material without fixing the fin portion provided with the uneven sealing portion to the core material portion, and the foam heat insulating material due to the fin of the vacuum heat insulating material. It is possible to provide a heat-insulating box body in which a void (cavity) or a foamed heat insulating material that is not filled with a space is filled with a heat insulating material unfilled portion.

  In addition, at least one side of the outer cover material is a plane perpendicular to the outer periphery of the outer cover material among the outer peripheral parts of the outer cover materials of the vacuum heat insulating material used for the heat insulating box. Gas and moisture that penetrates from the end face of the outer periphery of the outer cover material in the thin part of the heat-welded layer by providing a thin part where the thickness of the heat-welded layer is locally thin. The gas and moisture permeation resistance is increased, the gas and moisture permeation resistance is reduced, and the gas and moisture permeation rate is reduced. In order to maintain the vacuum heat insulating performance, the heat insulating performance of the heat insulating box containing the vacuum heat insulating material can be maintained over a long period of time.

  2nd invention fixes one said heat transfer surface of the vacuum heat insulating material which has two heat transfer surfaces which oppose each other to the surface facing an outer case in an inner case, and the said outer case and the said inner case It is the heat insulation box which filled the remaining space except the said vacuum heat insulating material part in between with the foam heat insulating material.

  The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. The core material is sealed under reduced pressure between the two outer cover materials arranged on the outer periphery of the core portion where the core material is between the two outer cover materials. The sealing part which has the fin-shaped fin part which consists only of material, and welded the outer peripheral parts of the two said jacket materials in order to seal the said core material in the said fin part is provided.

  When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material.

  Further, in the vacuum heat insulating material, the difference in height between the convex portion and the concave portion on the surface of the outer cover material is small on the outer casing side where the height difference between the convex portion and the concave portion on the surface of the outer cover material is larger. The fin portion provided with at least one side of the uneven sealing portion is fixed to a surface of the inner box facing the outer box so that the outer jacket material side is the inner box side, Without being fixed to the core part, the surface of the outer cover material is warped toward the outer cover material side where the height difference between the convex part and the concave part is larger.

  In the second invention, the vacuum heat insulating material fixed to the surface of the outer box facing the inner box in the first invention is fixed to the surface of the inner box facing the outer box. The same effect as the first invention except that the relationship between the outer box and the inner box in the vacuum heat insulating material in the first invention is the relationship between the inner box and the outer box in the vacuum heat insulating material in the second invention. Have.

According to a third aspect of the present invention, one heat transfer surface of a vacuum heat insulating material having two heat transfer surfaces facing each other is fixed to a surface of the one face material facing the other face material, and It is the heat insulation wall which filled the remaining space except the said vacuum heat insulating material part between the said face materials with the foam heat insulating material.

  The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. The core material is sealed under reduced pressure between the two outer cover materials arranged on the outer periphery of the core portion where the core material is between the two outer cover materials. The sealing part which has the fin-shaped fin part which consists only of material, and welded the outer peripheral parts of the two said jacket materials in order to seal the said core material in the said fin part is provided.

  When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material.

  Further, the vacuum heat insulating material is fixed so that the outer cover material side with the smaller height difference between the convex portion and the concave portion of the surface of the outer cover material is the face material side on which the vacuum heat insulating material is fixed. The fin portion provided with at least one side of the concave-convex sealing portion is not fixed to the core material portion, and has a larger height difference between the convex portion and the concave portion on the surface of the outer jacket material. Has warped.

  In the above-described configuration, at least one of the sealing portions of the vacuum heat insulating material is the closest when the cross section when cut along a plane perpendicular to the peripheral edge of the closest covering material is viewed. The thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion and the portion other than the sealing portion as it goes from the peripheral edge of the outer covering material toward the inner periphery of the outer covering material. Waveform unevenness that repeats the thin wall part thinner than the part alternately several times, and repeats the convex part and the concave part alternately several times on the surface of the jacket material corresponding to the thick part and thin part The height difference between the convex portion and the concave portion of the surface of the outer cover material of the uneven sealing portion is different between the surface of one outer cover material and the surface of the other outer cover material. Since they are different from each other, the vacuum heat insulating material warps toward the outer covering material side where the height difference between the convex portion and the concave portion on the surface of the outer covering material is larger.

  And the vacuum insulation material is the height of the convex part and the concave part of the surface of the jacket material on the face material side where the difference in height between the convex part and the concave part of the surface of the jacket material is larger, and the side of the jacket material is not fixing the vacuum thermal insulation material. Fix the fin part with the uneven sealing part to the core part, fixing the face material of the face material to the face material side facing each other so that the jacket material side with the smaller difference is the face material side fixing the vacuum heat insulating material When not fixed to the core part, the fin part provided with the uneven sealing part that is not fixed to the core part warps in a direction away from the face material side for fixing the vacuum heat insulating material.

  Therefore, the flow of the foam heat insulating material is not hindered when the remaining space excluding the vacuum heat insulating material portion between the two facing face materials is filled with the foam heat insulating material.

  This improves the fluidity of the foam heat insulating material during the foam growth of the foam heat insulating material without fixing the fin portion provided with the uneven sealing portion to the core material portion, and the foam heat insulating material due to the fin of the vacuum heat insulating material. It is possible to provide a heat insulating wall in which a void (cavity) or a foamed heat insulating material is not filled in a space filled with a heat insulating material that is not easily filled.

In addition, at least one sealing portion of the outer cover material of the sealing portions obtained by welding the outer peripheral portions of the vacuum insulating material used for the heat insulating wall is a plane perpendicular to the peripheral edge of the closest outer cover material. When the cut section is viewed, the thin portion of the heat-welded layer is provided with a locally thin portion. Since the permeation area is reduced, the permeation resistance of gas and moisture is increased, and the permeation rate of gas and moisture is reduced, so that the amount of gas and moisture that permeate over time is suppressed, and the vacuum insulation material is excellent over a long period of time. In order to maintain the vacuum performance, the heat insulation performance of the heat insulation wall containing the vacuum heat insulating material can be maintained over a long period of time.

  Next, the constituent material of the vacuum heat insulating material used for the heat insulating box or the heat insulating wall of the present invention will be described from the jacket material.

  The heat welding layer constituting the jacket material is not particularly specified, but a low density polyethylene film, a linear low density polyethylene film, a high density polyethylene film, a medium density polyethylene film, a polypropylene film, a polyacrylonitrile film, etc. These thermoplastic resins or mixed films thereof can be used.

  The core material is not particularly specified for its type, but is a porous body having a gas layer ratio of about 90%, and is open-celled such as urethane foam, styrene foam, phenol foam, glass wool, rock wool, alumina fiber, Conventionally known core materials such as fiber bodies such as silica-alumina fibers, powders such as pearlite, wet silica, and dry silica can be used.

  The adsorbent that is preferably sealed under reduced pressure in the jacket material together with the core material is not particularly specified as to the type, but the residual gas component of the core material or the jacket material, moisture that penetrates into the jacket material, Any gas adsorbing agent such as calcium oxide, zeolite, silica gel, or other getter material such as a moisture adsorbing agent that lowers or maintains the vacuum degree of the outer covering material can be used.

  The laminate adhesive used for the jacket material is not particularly specified, and conventionally known laminate adhesives such as two-component curable urethane adhesives or epoxy resin adhesives can be used.

  In addition, a recessed part is the sealing which welded when seeing the cross section at the time of cut | disconnecting in the plane perpendicular | vertical to the peripheral edge of the nearest jacket material at least the sealing part of one side of a jacket material among sealing parts This refers to the portion where at least two of the heat-sealing layers of the outer cover material are recessed, and the boundary line (boundary surface) between the heat-welding layer and other layers adjacent to the outside of the heat-welding layer is heat-welded The point which becomes at least 2 convex to the layer side is pointed out.

  Hereinafter, embodiments of the heat insulation box and the heat insulation wall of the present invention will be described with reference to the drawings. Note that the same reference numerals are given to the same components as those of the above-described embodiment, and the detailed description thereof will be omitted. Further, the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a heat insulation box in Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view showing a state during foam filling of the foam insulation of the heat insulation box of the same embodiment. FIG. 3 is a cross-sectional view of the vacuum heat insulating material used in the heat insulating box of the same embodiment, and FIG. 4 shows the uneven sealing portion and the uneven sealing portion of the vacuum heat insulating material used in the heat insulating box of the same embodiment. FIG. 5 is a plan view showing a state before the fin folding of the vacuum heat insulating material used in the heat insulating box of the same embodiment.

  The heat insulation box 1 of this embodiment fixes one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other to a surface facing the inner box 3 in the outer box 2, The remaining space excluding the vacuum heat insulating material 10 between 2 and the inner box 3 is filled with the foam heat insulating material 4.

  The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 and the adsorbent 13 are sealed under reduced pressure between two outer cover materials 12 arranged to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

  Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

  In addition, the sealing part 21 of the edge | side 16 used as the opening for insertion is the sealing part 21 with the normal surface which is not the uneven sealing part 20, and is flat.

  Further, the vacuum heat insulating material 10 has the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 on the inner casing 3 side where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger. It is fixed to the surface facing the inner box 3 in the outer box 2 so that the outer cover material 12 side with the smaller height difference is the outer box 2 side, and at least one side of the uneven sealing part 20 is provided. The fin portion 14 is not fixed to the core material portion, but is warped toward the outer covering material 12 side (inner box 3 side) where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger.

  The remaining space excluding the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 including the foam heat insulating material 4 is 5 mm or more so as not to inhibit the growth of the foam heat insulating material 4. desirable. More preferably, it is 10 mm or more, and 20 mm or more is desirable in order to completely suppress the generation of voids (cavities) and unfilled portions of the heat insulating material.

  Moreover, the heat insulation door 5 is arrange | positioned so that the front opening part of the accommodating part formed with the heat insulation box 1 can be opened and closed.

  The outer box 2 is preferably a metal steel plate such as a steel plate or a stainless steel plate, and the inner box 3 is preferably a resin such as ABS, PP, or PET.

As shown in FIG. 2, air vent holes 8 are provided in the outer box 2 and the inner box 3, and nozzle inlets 7 are respectively provided in tapered portions obtained by obliquely cutting the left and right corners on the back of the outer box 2. In the back and left and right sides facing the inner box 3, the vacuum heat insulating material 10 is placed on the outer covering material 12 having a larger height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20. The outer box 2 and the inner box 3 that are open at the front are combined so that a space filled with the foam insulation 4 is formed between the outer box 2 and the inner box 3. In the state where the front opening of the combined outer box 2 and inner box 3 is turned down, the foam heat insulating material 4 is left in the remaining space except the vacuum heat insulating material 10 portion between the outer box 2 and the inner box 3. Is filled.

  The raw material liquid of the foam heat insulating material 4 discharged from the nozzle 6 is uniformly filled in the lower direction (front opening direction) of the nozzle inlet 7, starts foaming, and expands upward (back direction). To do.

  At the time of foaming, the air in the portion excluding the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 passes through the air vent hole 8 provided in the outer box 2 and the inner box 3. Therefore, the air hole 8 is located downstream of the foam heat insulating material 4 in the foam growth direction.

  The foam growth direction (expansion direction) of the foam heat insulating material 4 can be seen by the difference in density after the completion of foaming. That is, the density in the upstream in the growth direction is relatively high and the density in the downstream in the growth direction is relatively low.

  The foam heat insulating material 4 is desirably a polyurethane foam, and the production method thereof will be described.

  The raw materials constituting the foamed polyurethane are a polyol component and a polyisocyanate component. The polyol component contains cyclopentane, a silicon-based foam stabilizer, an amine catalyst and water in advance. And a carbon dioxide is mixed with a polyol component by a static mixer.

  Here, carbon dioxide is mixed with the polyol component. However, it is preferable to mix carbon dioxide as a solute on the highly soluble side of the polyol component and the polyisocyanate component.

  Usually, the polyol component and the polyisocyanate component form a high-pressure circulation circuit via a mixing head. In the high-pressure circulation circuit, the polyol component and the polyisocyanate component flow in a high-pressure state, are mixed with each other by a mixing head at the time of injection, and are discharged to a substantially atmospheric pressure atmosphere.

  The fin portion 14 on the front opening side of the vacuum heat insulating material 10 fixed to the side surface of the outer box 2 has two opposing core material portions with the core material 11 between the outer cover material 12 of the vacuum heat insulating material 10. The heat transfer surface is bent so as to be in close contact with the heat transfer surface facing the inner box 3 (overlap the core portion), and is fixed by a sheet-like adhesive member 15. At this time, the sheet-like adhesive member 15 is fixed so as to cover all the convex portions 27 of the convex-concave sealing portion 20 of the fin portion 14, and the core material 11 is provided between the jacket material 12 of the vacuum heat insulating material 10. It adheres to the heat transfer surface on the inner box 3 side of the two heat transfer surfaces facing each other in the core part.

  The fin part 14 on the front opening side is bent and fixed to the heat transfer surface facing the inner box 3 of the core part of the vacuum heat insulating material 10 because the effective heat insulating area of the vacuum heat insulating material 10 with respect to the heat insulating box 1 The fin portion 14 on the front opening side of the vacuum heat insulating material 10 is expanded and insulated by bending the fin portion located upstream of the foam heat insulating material 4 in the direction of foam growth of the foam heat insulating material 4. This is to prevent the growth of the material 4 from being hindered.

  In addition, when the surface of the fin part 14 is parallel to the foaming growth direction of the foam heat insulating material 4, the fin part 14 does not hinder the flow of growth of the foam heat insulating material 4, so that the fin part 14 is bent and fixed. do not have to.

  The fixing method is not limited to fixing by the sheet-like adhesive member 15 provided with an adhesive, but may be cellophane tape or the like, and is not particularly limited.

  Further, the fin portion 14 on the back side, which is not bent and fixed in the vacuum heat insulating material 10 fixed to the side surface of the outer box 2, has an outer surface having a larger height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12. It is warped to the workpiece 12 side (inner box 3 side). The magnitude of warping is less than half of the thickness of the vacuum heat insulating material 10.

  When the nozzle 6 is inserted into the nozzle inlet 7, the fin portion 14 on the back side that is not bent and fixed in the vacuum heat insulating material 10 fixed to the side surface of the outer box 2 is temporarily warped by the insertion of the nozzle 6. However, when the nozzle 6 is pulled out from the nozzle inlet 7, the original warping state is restored, so that the fin portion 14 does not hinder the growth of the foam heat insulating material 4, and the void (cavity) or the heat insulating material unfilled portion There is almost no possibility of causing it.

  As shown in FIG. 2, the fin portion 14 of the vacuum heat insulating material 10 on the upstream side in the foam growth direction of the foam heat insulating material 4 is bent and fixed by the sheet-like adhesive member 15, and the vacuum on the downstream side in the growth direction. The fin part 14 of the heat insulating material 10 is not bent and fixed.

  This is because, on the downstream side in the growth direction, the fin portion 14 of the vacuum heat insulating material 10 is warped, so that the foam heat insulating material 4 can be grown and filled without generating voids.

  Here, the shape of the uneven sealing portion 20 including the thin portion 25 and the thick portion 26 will be described.

  As shown in FIG. 4, the uneven sealing portion 20 is in the sealing portion 21 and includes a thin portion 25 and a thick portion 26. The thin-walled portion 25 is located at the deepest portion of the concave portion 28, and the heat-welded layer 24 of the thin-walled portion 25 has a thickness (relative to the thickness of the heat-welded layer 24 that is heat-welded in a range other than the unevenly sealed portion 20 of the sealed portion 21. Thinly).

  Moreover, the thick part 26 is located at both ends of the thin part 25, and the heat welding layer 24 of the thick part 26 is the thickness of the heat welding layer 24 that is heat-sealed in a range other than the uneven sealing part 20 of the sealing part 21. It is thicker (relatively).

  The width of the sealing portion 21 is 20 mm, and the thickness of the thin portion 25 is 10 μm. Moreover, the convex part 27 of the convex-concave sealing part 20 has seven pieces. Here, the distance between the deepest portions of the adjacent recesses 28 is 1.5 mm.

  Moreover, the core material 11 of the filling is made of glass fiber.

  The jacket 12 is made of a linear low density polyethylene film having a thickness of 50 μm as the heat welding layer 24, an aluminum foil having a thickness of 6 μm as the gas barrier layer 23, and two nylon films having a thickness of 15 μm and 25 μm as the surface protective layer 22. Laminated.

  The adsorbent 13 is made of calcium oxide. An aluminum vapor deposition film may be applied to the gas barrier layer, or a combination of an aluminum vapor deposition film and an aluminum foil may be applied.

  Next, an example of the manufacturing method of the vacuum heat insulating material 10 of this Embodiment comprised as mentioned above is demonstrated based on FIGS.

  First, two rectangular outer covering materials 12 having the same size and having the heat welding layer 24 on one side are arranged so that the heat welding layers 24 face each other, and the three sides around the outer covering material 12 are arranged. To form a bag.

  At the time of this thermal welding, the metal upper heating and compression jig 31, the silicon rubber 32, and the lower heating and compression jig 33 having convex portions 30 that are substantially semicircular in cross section at the tip and continuous in the direction perpendicular to the cross section. Then, heat sealing is performed so as to sandwich the two outer cover materials 12 to form the sealing portion 21 including the uneven sealing portion 20 including the thin portion 25 and the thick portion 26 having the shape shown in FIG.

  At this time, the preferable conditions (values) of the temperature T1 of the upper heating and compression jig 31, the temperature T2 of the lower heating and compression jig 33, the thermal welding time S, and the thermal welding pressure P are as follows. The temperature T2 of the lower heating compression jig 33 is 70 to 110 ° C., the thermal welding time S is 1.5 to 4.5 seconds, and the thermal welding pressure P is 0.2 to 0.6 MPa. However, it varies depending on the material of the jacket material 12, and a preferable value may be selected, and is not particularly limited.

  Here, the heat-welding layer 24 of the sealing portion 21 may be heat-welded to the end of the fin portion 14.

  Here, the seal width (the width for heat-welding the jacket materials 12) is 20 mm. However, the seal width (the width for heat-welding the jacket materials 12) varies depending on the sealing property, and a preferable value may be selected, and is not particularly limited.

  The seal width (the width for heat-welding the jacket materials 12) is 20 mm, and the thickness of the thin portion 25 is 10 μm. Moreover, the convex part 27 of the convex-concave sealing part 20 has seven pieces. Here, the distance between the deepest portions of the adjacent recesses 28 is 1.5 mm.

  Here, the seal width (the width at which the outer cover materials 12 are thermally welded), the thickness of the thin portion 25, and the distance between the deepest portions of the adjacent concave portions 28 vary depending on the gas penetration amount, equipment and quality, and can be selected as preferable values. There is no particular limitation. However, at least two recesses 28 are provided.

  Here, the upper heating compression jig 31 has a convex portion 30 that has a substantially semicircular cross section at the tip and continues in a direction perpendicular to the horizontal cross section, but the silicon rubber 32 and the lower heating compression jig 33 There is no convex part, and it is a plane or a substantially plane. However, after forming the uneven sealing portion 20 of the sealing portion 21, since the thin portion 25 is formed, the outer covering material 12 closer to the silicon rubber 32 has a shape with a wave.

  Thereafter, the core material 11 made of glass fiber and having the adsorbent 13 previously placed therein is inserted into the bag from the side 16 serving as an opening for inserting the bag of the jacket material 12, and the bag interior is reduced to about 200 Pa or less. The vacuum heat insulating material 10 before fin folding is obtained by heat-sealing and sealing the side 16 serving as the opening for inserting the bag of the outer covering material 12 while reducing the pressure.

  At the time of thermal welding of the side 16 serving as the opening for insertion, a certain area is pressurized with a constant pressure and is thermally welded at a constant temperature.

  At this time, although not shown, the preferable values (conditions) for the temperature T1, the thermal welding time S, and the thermal welding pressure P of the upper heating and compression jig 31 are 120 to 200 ° C. when the temperature T1 of the upper heating and compression jig 31 is 120 to 200 ° C. The welding time S is 1.5 to 3 seconds, and the thermal welding pressure P is 0.2 to 0.6 MPa. However, it varies depending on the material of the jacket material 12, and a preferable value may be selected, and is not particularly limited.

  Here, at the time of thermal welding of the side 16 serving as the opening for insertion, the thermal welding layer 24 of the sealing portion 21 may be thermally welded to the end portion of the fin portion 14.

When the fin portion 14 is bent and fixed, it must be bent and fixed from the side having the uneven sealing portion 20 in order to suppress cracks generated in the uneven sealing portion 20 due to the bending and fixing. First, it is necessary to first bend and fix the opposite sides having the uneven sealing portion 20, and then bend and fix the side having the uneven sealing portion 20 facing the side 16, and finally bend and fix the side 16. .

  When the fins 14 are bent and fixed in an incorrect order, the vacuum heat insulating material 10 cannot maintain excellent vacuum heat insulation performance over a long period due to gas intrusion from cracks generated in the uneven sealing part 20.

  As described above, the heat insulating box 1 of the present embodiment fixes one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other to the surface facing the inner box 3 in the outer box 2. Then, the remaining space excluding the vacuum heat insulating material 10 portion between the outer box 2 and the inner box 3 is filled with the foam heat insulating material 4.

  The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 is sealed under reduced pressure between two outer cover materials 12 arranged so as to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

  Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

  Further, the vacuum heat insulating material 10 has the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 on the inner casing 3 side where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger. It is fixed to the surface facing the inner box 3 in the outer box 2 so that the outer cover material 12 side with the smaller height difference is the outer box 2 side, and at least one side of the uneven sealing part 20 is provided. The fin portion 14 is not fixed to the core material portion, but is warped toward the outer covering material 12 side (inner box 3 side) where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger.

  In the above configuration, at least one sealing portion 21 of the outer covering material 12 among the sealing portions 21 of the vacuum heat insulating material 10 is seen in a cross section when cut by a plane perpendicular to the peripheral edge of the nearest outer covering material 12. The thickness of the heat-welded layer 24 between the two gas barrier layers 23 becomes thicker than the portion other than the sealing portion 21 as it goes from the peripheral edge of the nearest outer cover material 12 toward the inner periphery of the outer cover material 12. The thick portion 26 and the thin portion 25 thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the covering material 12 of the sealing portion 21 corresponding to the thick portion 26 and the thin portion 25. The convex and concave sealing portion 20 is formed with a corrugated concave and convex portion that alternately repeats the convex portion 27 and the concave portion 28 a plurality of times. The height difference of the concave portion 28 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12. Since it is, the vacuum heat insulator 10 is warped in the enveloping member 12 side towards the height difference between the raised portion 27 and the recess 28 is large on the surface of the enveloping member 12.

And the vacuum heat insulating material 10 is the inner shell 3 side where the outer shell material 12 side where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer shell material 12 is larger is not fixed to the outer shell material 12. Surface convex part 27
And the outer cover material 12 side with the smaller height difference between the recesses 28 is fixed to the surface of the outer box 2 facing the inner box 3 so that the outer cover material 12 side is fixed, and the uneven sealing part 20 When the fin portion 14 provided with is not fixed to the core material portion, the fin portion 14 provided with the uneven sealing portion 20 not fixed to the core material portion is separated from the outer box 2 side to which the vacuum heat insulating material 10 is fixed. Warps in the direction.

  Therefore, the flow of the foam heat insulating material 4 is not hindered when the remaining space excluding the vacuum heat insulating material 10 portion between the outer box 2 and the inner box 3 is filled with the foam heat insulating material 4.

  Thereby, even if it does not fix the fin part 14 provided with the uneven sealing part 20 to a core material part, the fluidity | liquidity of the foam heat insulating material 4 improves at the time of foaming growth of the foam heat insulating material 4, and the vacuum heat insulating material 10 of FIG. It is possible to provide the heat insulating box 1 in which voids (cavities) and the unfilled portion of the heat insulating material that is not filled with the foam heat insulating material 4 are not easily generated in the space filled with the foam heat insulating material 4 by fins.

  Moreover, the sealing part 21 of the at least one side of the covering material 12 is the nearest covering material among the sealing parts 21 which welded the outer peripheral parts of the covering material 12 of the vacuum heat insulating material 10 used for the heat insulating box 1. When the cross section taken along a plane perpendicular to the peripheral edge of 12 is viewed, the thin portion 25 of the heat welding layer 24 is provided with the thin portion 25 where the thickness of the heat welding layer 24 is locally thin. The permeation area of gas and water entering from the end face of the periphery of the workpiece 12 is reduced, the permeation resistance of gas and water is increased, and the permeation speed of gas and water is reduced. Since the amount is suppressed and the vacuum heat insulating material 10 maintains excellent vacuum heat insulating performance for a long time, the heat insulating performance of the heat insulating box 1 incorporating the vacuum heat insulating material 10 can be maintained for a long time.

(Embodiment 2)
FIG. 6 is a longitudinal sectional view of the heat insulation box according to the second embodiment of the present invention, and FIG. 7 is a longitudinal sectional view showing a state of the heat insulation box of the same embodiment at the time of foam filling of the foam insulation.

  In the present embodiment, the same components as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heat insulation box 1 of this embodiment fixes one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other to the surface of the inner box 3 facing the outer box 2, The remaining space excluding the vacuum heat insulating material 10 between 2 and the inner box 3 is filled with the foam heat insulating material 4.

  The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 and the adsorbent 13 are sealed under reduced pressure between two outer cover materials 12 arranged to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

  In addition, the sealing part 21 of the edge | side 16 used as the opening for insertion is the sealing part 21 with the normal surface which is not the uneven sealing part 20, and is flat.

  Further, the vacuum heat insulating material 10 has the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 on the outer casing 2 side where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger. It is fixed to the surface facing the outer box 2 in the inner box 3 so that the outer cover material 12 side with the smaller height difference is on the inner box 3 side, and an uneven sealing part 20 of at least one side is provided. The fin portion 14 is not fixed to the core material portion and is warped toward the outer covering material 12 side (outer box 2 side) where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger.

  The remaining space excluding the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 including the foam heat insulating material 4 is 5 mm or more so as not to inhibit the growth of the foam heat insulating material 4. desirable. More preferably, it is 10 mm or more, and 20 mm or more is desirable in order to completely suppress the generation of voids (cavities) and unfilled portions of the heat insulating material.

  Moreover, the heat insulation door 5 is arrange | positioned so that the front opening part of the accommodating part formed with the heat insulation box 1 can be opened and closed.

  The outer box 2 is preferably a metal steel plate such as a steel plate or a stainless steel plate, and the inner box 3 is preferably a resin such as ABS, PP, or PET.

  As shown in FIG. 7, an air vent hole 8 is provided in the outer box 2 and the inner box 3, a nozzle inlet 7 is provided on the back side of the bottom surface of the outer box 2, and the rear surface of the inner box 3 facing the outer box 2 The vacuum heat insulating material 10 is fixed to the top surface and the bottom surface with the outer cover material 12 having the larger height difference between the convex portion 27 and the concave portion 28 of the surface of the outer cover material 12 of the uneven sealing portion 20 facing the outer box 2, The outer box 2 and the inner box 3 each having an open front are combined so that a space for filling the foam heat insulating material 4 is formed between the outer box 2 and the inner box 3, and the combined outer box 2 With the front opening of the inner box 3 facing up, the remaining space excluding the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 is filled with the foam heat insulating material 4.

  The raw material liquid of the foam heat insulating material 4 discharged from the nozzle 6 is uniformly filled on the back surface, starts foaming, and expands upward (in the direction of the opening).

  At the time of foaming, the air in the portion excluding the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 passes through the air vent hole 8 provided in the outer box 2 and the inner box 3. Therefore, the air hole 8 is located downstream of the foam heat insulating material 4 in the foam growth direction.

  The fin part 14 on the back side of the vacuum heat insulating material 10 fixed to the top and bottom surfaces of the inner box 3 is opposite to the core material part 2 having the core material 11 between the outer cover material 12 of the vacuum heat insulating material 10. The two heat transfer surfaces are bent so as to be in close contact with the heat transfer surface opposite to the outer box 2 (overlap the core member), and are fixed by the sheet-like adhesive member 15. At this time, the sheet-like adhesive member 15 is fixed so as to cover all the convex portions 27 of the convex-concave sealing portion 20 of the fin portion 14, and the core material 11 is provided between the jacket material 12 of the vacuum heat insulating material 10. The two heat transfer surfaces facing each other in the core part are fixed to the heat transfer surface on the outer case 2 side.

  The fin part 14 on the back side is bent and fixed to the heat transfer surface facing the outer box 2 of the core part of the vacuum heat insulating material 10 because the effective heat insulating area of the vacuum heat insulating material 10 with respect to the heat insulating box 1 is widened. At the same time, the fin portion 14 on the back side of the vacuum heat insulating material 10 grows the foam heat insulating material 4 by bending the fin portion located on the upstream side of the foam heat insulating material 4 in the direction of foam growth. This is so as not to hinder.

  Note that air in the portion except for the vacuum heat insulating material 10 between the outer box 2 and the inner box 3 is easy to escape through the air hole 8 provided in the outer box 2 and the inner box 3. The fin part 14 close to is not bent.

  In addition, when the surface of the fin part 14 is parallel to the foaming growth direction of the foam heat insulating material 4, the fin part 14 does not hinder the flow of growth of the foam heat insulating material 4, so that the fin part 14 is bent and fixed. do not have to.

  Further, the fin portion 14 on the opening side which is not fixed by bending in the vacuum heat insulating material 10 fixed to the top and bottom surfaces of the inner box 3 has a difference in height between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12. It is warped to the outer covering material 12 side (outer box 2 side). The magnitude of warping is less than half of the thickness of the vacuum heat insulating material 10.

  As shown in FIG. 7, in the vacuum heat insulating material 10 fixed to the top and bottom surfaces of the inner box 3, the fin portion 14 of the vacuum heat insulating material 10 on the upstream side in the foaming growth direction of the foam heat insulating material 4 is bent, and the sheet The fin part 14 of the vacuum heat insulating material 10 which is fixed by the adhesive member 15 and which is on the downstream side in the growth direction is not bent and fixed.

  This is because, on the downstream side in the growth direction, the fin portion 14 of the vacuum heat insulating material 10 is warped, so that the foam heat insulating material 4 can be grown and filled without generating voids.

  As described above, the heat insulating box 1 of the present embodiment fixes one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other to the surface facing the outer box 2 in the inner box 3. Then, the remaining space excluding the vacuum heat insulating material 10 portion between the outer box 2 and the inner box 3 is filled with the foam heat insulating material 4.

  The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 is sealed under reduced pressure between two outer cover materials 12 arranged so as to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

  Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

Further, the vacuum heat insulating material 10 has the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 on the outer casing 2 side where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger. It is fixed to the surface facing the outer box 2 in the inner box 3 so that the outer cover material 12 side with the smaller height difference is on the inner box 3 side, and an uneven sealing part 20 of at least one side is provided. The fin portion 14 is not fixed to the core material portion and is warped toward the outer covering material 12 side (outer box 2 side) where the height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 is larger.

  In the above configuration, at least one sealing portion 21 of the outer covering material 12 among the sealing portions 21 of the vacuum heat insulating material 10 is seen in a cross section when cut by a plane perpendicular to the peripheral edge of the nearest outer covering material 12. The thickness of the heat-welded layer 24 between the two gas barrier layers 23 becomes thicker than the portion other than the sealing portion 21 as it goes from the peripheral edge of the nearest outer cover material 12 toward the inner periphery of the outer cover material 12. The thick portion 26 and the thin portion 25 thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the covering material 12 of the sealing portion 21 corresponding to the thick portion 26 and the thin portion 25. The convex and concave sealing portion 20 is formed with a corrugated concave and convex portion that alternately repeats the convex portion 27 and the concave portion 28 a plurality of times. The height difference of the concave portion 28 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12. Since it is, the vacuum heat insulator 10 is warped in the enveloping member 12 side towards the height difference between the raised portion 27 and the recess 28 is large on the surface of the enveloping member 12.

  And the vacuum heat insulating material 10 is the outer cover material 12 side where the height difference of the convex part 27 and the recessed part 28 of the surface of the outer cover material 12 where the level difference is large does not fix the vacuum heat insulating material 10 side. Fix the surface of the inner box 3 facing the outer box 2 so that the outer cover material 12 side with the smaller height difference between the convex part 27 and the concave part 28 on the surface is the inner box 3 side fixing the vacuum heat insulating material 10; When the fin part 14 provided with the uneven sealing part 20 is not fixed to the core part, the fin part 14 provided with the uneven sealing part 20 not fixed to the core part is used to fix the vacuum heat insulating material 10. Warps away from the box 3 side.

  Therefore, the flow of the foam heat insulating material 4 is not hindered when the remaining space excluding the vacuum heat insulating material 10 portion between the outer box 2 and the inner box 3 is filled with the foam heat insulating material 4.

  Thereby, even if it does not fix the fin part 14 provided with the uneven sealing part 20 to a core material part, the fluidity | liquidity of the foam heat insulating material 4 improves at the time of foaming growth of the foam heat insulating material 4, and the vacuum heat insulating material 10 of FIG. It is possible to provide the heat insulating box 1 in which voids (cavities) and the unfilled portion of the heat insulating material that is not filled with the foam heat insulating material 4 are not easily generated in the space filled with the foam heat insulating material 4 by fins.

  Moreover, the sealing part 21 of the at least one side of the covering material 12 is the nearest covering material among the sealing parts 21 which welded the outer peripheral parts of the covering material 12 of the vacuum heat insulating material 10 used for the heat insulating box 1. When the cross section taken along a plane perpendicular to the peripheral edge of 12 is viewed, the thin portion 25 of the heat welding layer 24 is provided with the thin portion 25 where the thickness of the heat welding layer 24 is locally thin. The permeation area of gas and water entering from the end face of the periphery of the workpiece 12 is reduced, the permeation resistance of gas and water is increased, and the permeation speed of gas and water is reduced. Since the amount is suppressed and the vacuum heat insulating material 10 maintains excellent vacuum heat insulating performance for a long time, the heat insulating performance of the heat insulating box 1 incorporating the vacuum heat insulating material 10 can be maintained for a long time.

(Embodiment 3)
FIG. 8 is a cross-sectional view of the heat insulating wall according to Embodiment 3 of the present invention.

  In the present embodiment, the same components as those in the first and second embodiments described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heat insulating wall 41 of the present embodiment is configured by fixing one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other to a surface facing the other face material 42 in the one face material 43. This is a heat insulating wall 41 in which the remaining space excluding the vacuum heat insulating material 10 portion between the two facing face materials 42 and 43 is filled with the foam heat insulating material 4.

The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 and the adsorbent 13 are sealed under reduced pressure between two outer cover materials 12 arranged to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

  Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

  In addition, the sealing part 21 of the edge | side 16 used as the opening for insertion is the sealing part 21 with the normal surface which is not the uneven sealing part 20, and is flat.

  Furthermore, the vacuum heat insulating material 10 is fixed so that the surface of the outer covering material 12 with the smaller height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 becomes the side of the face material 43 that fixes the vacuum insulating material 10. The fin portion 14 provided with at least one side of the concave / convex sealing portion 20 is not fixed to the core portion, and has a larger height difference between the convex portion 27 and the concave portion 28 on the surface of the outer cover material 12. It is warped toward the outer covering material 12 side (face material 42 side).

  The one face member 42 and the other face member 43 are desirably metal steel plates such as steel plates and stainless steel plates, or resins such as ABS, PP, and PET.

  Here, since the vacuum heat insulating material 10 and the foam heat insulating material 4 have the same configurations as those of the first embodiment, description thereof will be omitted.

  As described above, in the heat insulating wall 41 of the present embodiment, one heat transfer surface of the vacuum heat insulating material 10 having two heat transfer surfaces facing each other is opposed to the other face material 42 in one face material 43. It is the heat insulation wall 41 which filled the foaming heat insulating material 4 in the remaining space except for the vacuum heat insulating material 10 part between the two face materials 42 and 43 which are fixed to the surface and opposed to each other.

  The vacuum heat insulating material 10 has a surface protective layer 22 on one surface, a heat welding layer 24 on the other surface, and a gas barrier layer 23 between the surface protective layer 22 and the heat welding layer 24, respectively. The core material 11 and the adsorbent 13 are sealed under reduced pressure between two outer cover materials 12 arranged to face each other.

  And it consists of only two jacket materials 12 on the outer peripheral side of the core material portion where the core material 11 is between the two jacket materials 12 (the two jacket materials 12 are in close contact with each other). The sealing part 21 which has the fin part 14 and welded the outer peripheral parts of the two jacket materials 12 in order to seal the core material 11 in the fin part 14 is provided.

Of the sealing portion 21, the sealing portions 21 on the three sides of the outer covering material 12 other than the side 16 serving as the opening of the three-way sealing bag of the outer covering material 12 are planes perpendicular to the peripheral edge of the nearest outer covering material 12. When the cross section of the outer cover material 12 is cut, the thickness of the heat-welded layer 24 between the two gas barrier layers 23 increases from the peripheral edge of the outer cover material 12 toward the inner periphery of the cover material 12. The thick portion 26 that is thicker than the portion other than 21 and the thin portion 25 that is thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the thick portion 26 and the thin portion 25 are sealed correspondingly. It is the uneven sealing part 20 by which the unevenness | corrugation of the waveform which repeats the convex part 27 and the recessed part 28 alternately several times was formed in the surface of the jacket material 12 of the stop part 21. FIG. The height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 of the uneven sealing portion 20 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12.

  In addition, the sealing part 21 of the edge | side 16 used as the opening for insertion is the sealing part 21 with the normal surface which is not the uneven sealing part 20, and is flat.

  Furthermore, the vacuum heat insulating material 10 is fixed so that the surface of the outer covering material 12 with the smaller height difference between the convex portion 27 and the concave portion 28 on the surface of the outer covering material 12 becomes the side of the face material 43 that fixes the vacuum insulating material 10. The fin portion 14 provided with at least one side of the concave / convex sealing portion 20 is not fixed to the core portion, and has a larger height difference between the convex portion 27 and the concave portion 28 on the surface of the outer cover material 12. It is warped toward the outer covering material 12 side (face material 42 side).

  In the above configuration, at least one sealing portion 21 of the outer covering material 12 among the sealing portions 21 of the vacuum heat insulating material 10 is seen in a cross section when cut by a plane perpendicular to the peripheral edge of the nearest outer covering material 12. The thickness of the heat-welded layer 24 between the two gas barrier layers 23 becomes thicker than the portion other than the sealing portion 21 as it goes from the peripheral edge of the nearest outer cover material 12 toward the inner periphery of the outer cover material 12. The thick portion 26 and the thin portion 25 thinner than the portion other than the sealing portion 21 are alternately repeated a plurality of times, and the covering material 12 of the sealing portion 21 corresponding to the thick portion 26 and the thin portion 25. The convex and concave sealing portion 20 is formed with a corrugated concave and convex portion that alternately repeats the convex portion 27 and the concave portion 28 a plurality of times. The height difference of the concave portion 28 is different between the surface of one outer covering material 12 and the surface of the other outer covering material 12. Since it is, the vacuum heat insulator 10 is warped in the enveloping member 12 side towards the height difference between the raised portion 27 and the recess 28 is large on the surface of the enveloping member 12.

  And the vacuum heat insulating material 10 is the surface material 42 side in which the surface material 12 side where the height difference of the convex part 27 and the recessed part 28 of the surface of the jacket material 12 has a large height difference does not fix the vacuum heat insulating material 10 side. Fixing to the face facing the face material 42 in the face material 43 so that the outer cover material 12 side with the smaller height difference between the convex portion 27 and the concave portion 28 on the surface is on the face material 43 side fixing the vacuum heat insulating material 10, When the fin part 14 provided with the uneven sealing part 20 is not fixed to the core part, the fin part 14 provided with the uneven sealing part 20 not fixed to the core part is a surface for fixing the vacuum heat insulating material 10. Warps in a direction away from the material 43 side.

  Therefore, the flow of the foam heat insulating material 4 is not hindered when the remaining space excluding the vacuum heat insulating material 10 portion between the two facing face materials 42 and 43 is filled with the foam heat insulating material 4.

  Thereby, even if it does not fix the fin part 14 provided with the uneven sealing part 20 to a core material part, the fluidity | liquidity of the foam heat insulating material 4 improves at the time of foaming growth of the foam heat insulating material 4, and the vacuum heat insulating material 10 of FIG. It is possible to provide a heat insulating wall 41 in which voids (cavities) or unfilled portions of the heat insulating material that are not filled with the foam heat insulating material 4 are not easily generated in the space filled with the foam heat insulating material 4 by fins.

In addition, at least the sealing portion 21 on one side of the covering material 12 out of the sealing portions 21 obtained by welding the outer peripheral portions of the covering material 12 of the vacuum heat insulating material 10 used for the heat insulating wall 41 is the closest covering material 12. When the cross-section of the heat-welded layer 24 is locally thin when the cross-section taken along a plane perpendicular to the peripheral edge of the heat-welded layer 24 is viewed, the outer cover of the thin-walled portion 25 of the heat-welded layer 24 is provided. Since the gas and moisture permeation area entering from the end face of the peripheral edge of the material 12 is reduced, the gas and moisture permeation resistance is increased, and the gas and moisture permeation rate is reduced. Is suppressed, and the vacuum heat insulating material 10 maintains excellent vacuum heat insulating performance over a long period of time, and thus the heat insulating performance of the heat insulating wall 41 containing the vacuum heat insulating material 10 can be maintained over a long period of time.

  The heat insulation box or heat insulation wall according to the present invention is less likely to have a void (cavity) or a non-filled portion of the heat insulating material that is not filled with the foam heat insulating material due to the fin of the vacuum heat insulating material, and has a heat insulating performance. Since it can be maintained over a long period of time, it can also be applied to applications such as refrigerators, vending machines, hot water supply containers, heat insulating materials for buildings, heat insulating materials for automobiles, and cold / heat insulating boxes.

DESCRIPTION OF SYMBOLS 1 Heat insulation box 2 Outer box 3 Inner box 4 Foam heat insulating material 10 Vacuum heat insulating material 11 Core material 12 Outer covering material 14 Fin part 20 Uneven sealing part 21 Sealing part 22 Surface protection layer 23 Gas barrier layer 24 Heat welding layer 25 Thin wall Part 26 thick part 27 convex part 28 concave part 41 heat insulating wall 42 face material 43 face material

Claims (3)

The vacuum heat insulating material between the outer box and the inner box by fixing one heat transfer surface of the vacuum heat insulating material having the two opposite heat transfer surfaces to a surface of the outer box facing the inner box. A heat insulation box filled with foam insulation in the remaining space excluding the part,
The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. A plate-shaped core material is sealed under reduced pressure between two outer cover materials arranged on the outer periphery of the core material portion where the core material is between the two outer cover materials. A sealing portion having a fin-like fin portion made of only the outer cover material, and heat-pressing the outer peripheral portions of the two outer cover materials to seal the core material in the fin portion. Is provided,
When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material,
The vacuum heat insulating material has a smaller height difference between the convex portion and the concave portion on the surface of the outer jacket material, and the smaller side difference between the convex portion and the concave portion on the surface of the outer jacket material on the inner box side. The fin portion provided with at least one side of the uneven sealing portion is fixed to a surface of the outer box facing the inner box so that the outer cover material side is the outer box side. A heat insulating box body that is not fixed to a material part and is warped toward the outer cover material side having a larger height difference between a convex part and a concave part on the surface of the outer cover material. The vacuum heat insulating material between the outer box and the inner box by fixing one heat transfer surface of the vacuum heat insulating material having two heat transfer surfaces facing each other to a surface of the inner box facing the outer box. A heat insulation box filled with foam insulation in the remaining space excluding the part,
The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. A plate-shaped core material is sealed under reduced pressure between two outer cover materials arranged on the outer periphery of the core material portion where the core material is between the two outer cover materials. A sealing portion having a fin-like fin portion made of only the outer cover material, and heat-pressing the outer peripheral portions of the two outer cover materials to seal the core material in the fin portion. Is provided,
When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material,
The vacuum heat insulating material has a smaller height difference between the convex portion and the concave portion on the surface of the outer jacket material, and the smaller side difference between the convex portion and the concave portion on the surface of the outer jacket material on the outer casing side. The fin portion provided with at least one side of the uneven sealing portion is fixed to a surface of the inner box facing the outer box so that the outer cover material side is the inner box side. A heat insulating box body that is not fixed to a material part and is warped toward the outer cover material side having a larger height difference between a convex part and a concave part on the surface of the outer cover material. One heat transfer surface of a vacuum heat insulating material having two heat transfer surfaces facing each other is fixed to a surface of the one face material facing the other face material, and between the two face materials facing each other. A heat insulating wall filled with a foam heat insulating material in the remaining space excluding the vacuum heat insulating material part,
The vacuum heat insulating material has a surface protective layer on one surface, a heat welding layer on the other surface, and a gas barrier layer between the surface protective layer and the heat welding layer so that the heat welding layers face each other. A plate-shaped core material is sealed under reduced pressure between two outer cover materials arranged on the outer periphery of the core material portion where the core material is between the two outer cover materials. A sealing portion having a fin-like fin portion made of only the outer cover material, and heat-pressing the outer peripheral portions of the two outer cover materials to seal the core material in the fin portion. Is provided,
When at least one of the sealing portions of the sealing portion is cut by a plane perpendicular to the peripheral edge of the closest covering material, the closest covering material is seen. The thick portion and the sealing portion in which the thickness of the heat-welded layer between the two gas barrier layers is thicker than the portion other than the sealing portion as it goes from the peripheral edge to the inner periphery of the jacket material The thin portion that is thinner than other portions is alternately repeated a plurality of times, and the convex portion and the concave portion are alternately formed on the surface of the covering material of the sealing portion corresponding to the thick portion and the thin portion. It is a concave / convex sealing portion in which a concave / convex portion having a waveform that repeats a plurality of times is formed, and the height difference between the convex portion and the concave portion of the surface of the outer cover material of the concave / convex sealing portion is the surface of one outer cover material. It differs from the surface of the other jacket material,
The vacuum heat insulating material is fixed such that the surface material side of the surface fixing the vacuum heat insulating material is the surface of the outer surface of the surface of the outer covering material where the height difference between the convex and concave portions is smaller. The fin portion provided with the concave / convex sealing portion on at least one side is not fixed to the core portion, and is on the outer jacket material side where the height difference between the convex portion and the concave portion on the surface of the outer jacket material is larger. An insulating wall characterized by warping.

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