JP2007155279A - Heat insulated case body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a vacuum heat insulating material from displacing due to heating of a heat insulated case body in a filling/foaming step of a hard urethane foam heat insulating material in a heat insulated case body by securely fixing the vacuum heat insulating material on the inner face side of the case body composed of a steel plate having a resin coating layer on the inner face side. <P>SOLUTION: A styrene rubber hot melt 20 is coated on the adhesion side face 19 of the vacuum heat insulating material 11, and the adhesion side face 19 is adhered on the inner face 16 of the steel plate 14. Further, the styrene rubber hot melt 20 is coated (provided) to contact both of an outer circumference face of a core material part adjacent perpendicularly to the adhesion side face 19 of the core part and the inner face 16 of the case body 15, on the outside of at least one side 21 of an outer material 13 of the adhesion side face 19 of the core part having a core material 12 between the outer material 13 of the vacuum heat insulating material 11, and the adhesion of the vacuum heat insulating material 11 and the steel plate 14 is strengthened. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat insulating housing provided with a vacuum heat insulating material.

  In recent years, from the viewpoint of protecting the global environment, energy saving in buildings such as houses has become an important issue as well as home appliances and industrial equipment. Therefore, application of a vacuum heat insulating material to a refrigerator or the like and an applicable construction method have been proposed (for example, see Patent Document 1).

FIG. 10 is a cross-sectional view illustrating the manufacturing process of a conventional refrigerator. As shown in FIG. 10, a hot-melt adhesive 101, which is a rubber-based thermoplastic resin, is uniformly applied to the vacuum heat insulating material 100 over almost the entire surface of one side. Is supplied to the upper part of the flat outer box 102 that moves on the assembly line conveyor, and is adhered to the heat insulation space side of the inner surfaces of both side walls of the outer box 102 formed in a flat shape by the adhesive force of the hot melt adhesive 101. wear. Thereafter, the outer box 102 is bent by the bending jig 103 to form a casing.
JP 2005-90897 A

  However, when the resin coating layer is provided on the heat insulating space side of the steel plate used for the outer casing 102 in the flat state, the adhesiveness between the hot melt adhesive 101 and the steel plate having the resin coating layer is small, and the hard urethane foam to the heat insulating casing In the step of filling and foaming the heat insulating material, there was a problem that the viscosity of the hot melt pressure-sensitive adhesive 101 was lowered by heating the heat insulating casing and the vacuum heat insulating material 100 was shifted from the arrangement position.

  In view of the above-mentioned problems of the prior art, the present invention provides a solid urethane foam heat insulating material filled in a heat insulating housing by firmly fixing a vacuum heat insulating material on the inner surface side of the housing made of a steel plate having a resin coating layer on the inner surface side. -In a foaming process, it aims at preventing the shift | offset | difference of the vacuum heat insulating material by the heating of a heat insulation housing.

  In order to achieve the above object, the heat insulating casing of the present invention is a vacuum formed by covering a core material with an outer cover material having a laminate structure having at least a heat welding layer and a gas barrier layer, and sealing the inside of the outer cover material under reduced pressure. A heat insulating material is bonded and arranged on the inner surface side of a steel plate made of a steel plate having a resin coating layer on the inner surface side by a styrene rubber-based hot melt provided on the bonding side surface of the vacuum heat insulating material. The outer side of at least one side of the outer cover material of the core material portion having the core material between the outer jacket materials, or at least two adjacent outer cover materials of the adhesive side surface of the core material portion. The said core material which adjoins the adhesion side surface of the said core material part perpendicularly | vertically on the outer side of the said jacket material of the outer side of a corner part, or the outer side of the said jacket material of the core material part, and the outer side of at least one corner part. Part Styrene rubber hot melt having a higher heat resistance than styrene rubber hot melt or styrene rubber hot melt provided on the adhesive side of the vacuum heat insulating material so as to contact both the peripheral surface and the inner surface of the housing. A melt is provided.

  Thereby, the shift | offset | difference of the vacuum heat insulating material by the heating of a heat insulation housing can be prevented in the filling and foaming process of the hard urethane foam heat insulation material to a heat insulation housing.

  The heat insulating housing of the present invention is filled and foamed with hard urethane foam heat insulating material on the heat insulating housing by the adhesive force of hot melt provided so as to be in contact with both the outer peripheral surface of the core portion of the vacuum heat insulating material and the inner surface of the housing. In the process, the displacement of the vacuum heat insulating material due to heating of the heat insulating housing can be prevented.

  Moreover, since the effect of preventing the vacuum heat insulating material from being peeled off from the steel plate by the hot melt adhesive force can be obtained even in the temperature change of the heat insulating housing installation environment at the time of using the heat insulating housing, the heat insulation due to the peeling of the vacuum heat insulating material is obtained. It is possible to provide a heat insulating casing that can prevent deformation of the casing such as undulations.

  According to the first aspect of the present invention, there is provided a vacuum heat insulating material in which the core material is covered with a jacket material having a laminate structure having at least a heat-welded layer and a gas barrier layer, and the inside of the jacket material is sealed under reduced pressure. Adhered to and disposed on the inner surface side of a casing made of a steel plate having a resin coating layer on the inner surface side by a styrene rubber-based hot melt provided on the bonding side surface of the heat insulating material, and further between the jacket materials in the vacuum heat insulating material The outer peripheral surface of the core material portion and the inner surface of the casing that are perpendicularly adjacent to the adhesive side surface of the core material portion on the outer side of at least one side of the outer cover material of the adhesive side surface of the core material portion having the core material It is a heat insulating casing provided with a styrene rubber-based hot melt so as to come into contact with both.

  The heat insulating housing of the present invention has an outer peripheral surface of the core member and an inner surface of the housing on the outer side of at least one side of the outer cover member of the core member having the core member between the outer cover members in the vacuum heat insulating member. Adhesive strength between the vacuum heat insulating material and the steel sheet is reinforced by the adhesive strength of the hot melt provided so as to come into contact with both, so the vacuum heat insulating material is heated by heating the heat insulating housing in the filling and foaming process of hard urethane foam heat insulating material It is possible to prevent the deviation.

  In addition, by providing enhanced adhesion between the vacuum insulation material and the steel plate, we provide a heat insulation case that can prevent deformation of the heat insulation case due to peeling of the vacuum heat insulation material from the steel plate due to temperature changes in the heat insulation case installation environment when using the heat insulation case. The effect that can be obtained.

  According to a second aspect of the present invention, there is provided a vacuum heat insulating material in which the core material is covered with a jacket material having a laminate structure having at least a heat-welded layer and a gas barrier layer, and the inside of the jacket material is sealed under reduced pressure. Adhered to and disposed on the inner surface side of a casing made of a steel plate having a resin coating layer on the inner surface side by a styrene rubber-based hot melt provided on the bonding side surface of the heat insulating material, and further between the jacket materials in the vacuum heat insulating material The outer peripheral surface of the core material portion perpendicularly adjacent to the adhesion side surface of the core material portion, on the outer side of at least two adjacent corner portions of the jacket material on the adhesion side surface of the core material portion having the core material This is a heat insulating housing provided with a styrene rubber-based hot melt so as to come into contact with both inner surfaces of the housing.

  The heat insulating casing of the present invention has an outer peripheral surface of the core material portion on the outer side of at least two adjacent corner portions of the outer cover material of the adhesive side surface of the core material portion having the core material between the outer cover materials in the vacuum heat insulating material. Due to the adhesive strength of the hot melt provided so as to come into contact with both the inner surfaces of the housing, the two corners provided with the hot melt are more firmly fixed to the steel plate and the vacuum heat insulating material. It is possible to prevent the displacement of the vacuum heat insulating material due to the heating of the heat insulating casing in the material filling / foaming step.

  Further, an effect of providing a heat insulating casing that can prevent deformation such as undulation of the heat insulating casing due to the peeling of the vacuum heat insulating material from the steel sheet due to a temperature change of the heat insulating casing installation environment at the time of using the heat insulating casing can be obtained. Furthermore, in the adhesion of vacuum insulation and steel plates, the corners where peeling is likely to occur can be fixed more firmly with hot melt to prevent the corners from floating. The effect which can prevent the penetration | invasion of a hard urethane foam heat insulating material is acquired.

  According to a third aspect of the present invention, there is provided a vacuum heat insulating material in which the core material is covered with a covering material having a laminate structure having at least a heat-welded layer and a gas barrier layer, and the inside of the covering material is sealed under reduced pressure. Adhered to and disposed on the inner surface side of a casing made of a steel plate having a resin coating layer on the inner surface side by a styrene rubber-based hot melt provided on the bonding side surface of the heat insulating material, and further between the jacket materials in the vacuum heat insulating material The core material portion that is perpendicularly adjacent to the adhesion side surface of the core material portion on the outer side of at least one side of the jacket material and the outer side of at least one corner portion of the adhesion side surface of the core material portion having the core material It is the heat insulation housing | casing in which the styrene rubber type hot melt was provided so that both the outer peripheral surface of this and the inner surface of the said housing might be contacted.

  In the heat insulating housing of the present invention, the vacuum heat insulating material and the steel plate are bonded together at the sides and corners of the vacuum heat insulating material in addition to the bonding of the surface by hot melt, so that the rigid urethane is fixed. It is possible to prevent the displacement of the vacuum heat insulating material due to the heating of the heat insulating casing in the filling and foaming process of the foam heat insulating material.

  Further, an effect of providing a heat insulating casing that can prevent deformation such as undulation of the heat insulating casing due to the peeling of the vacuum heat insulating material from the steel sheet due to a temperature change of the heat insulating casing installation environment at the time of using the heat insulating casing can be obtained. In addition, in the adhesion of vacuum insulation and steel plates, the corners where peeling is likely to occur can be fixed more firmly with hot melt, preventing the corners from floating. The effect which can prevent the penetration | invasion of a hard urethane foam heat insulating material is acquired.

  Furthermore, the application of hot melt to the sides and corners of the vacuum insulation can be freely determined according to the flow direction and foaming temperature of the hard urethane foam insulation, so the optimum application form can be selected according to the situation at that time. The effect that can be obtained. Furthermore, the effect which can reduce the application | coating thickness of the hot melt apply | coated to the adhesion side surface of a vacuum heat insulating material as needed, and can reduce the quantity is acquired.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects of the present invention, both the outer peripheral surface of the core member and the inner surface of the casing that are perpendicularly adjacent to the bonding side surface of the core member are provided. As the styrene rubber-based hot melt provided so as to come into contact, one having a higher heat resistance temperature than that of the styrene rubber-based hot melt provided on the adhesion side surface of the vacuum heat insulating material is used.

  In the heat insulating housing of the present invention, the adhesive side surface of the vacuum heat insulating material is used as a styrene rubber-based hot melt provided so as to be in contact with both the outer peripheral surface of the core material portion and the inner surface of the housing perpendicularly adjacent to the adhesive side surface of the core material portion. The use of hot melt, which has higher heat resistance than the hot melt provided on the surface and cannot be applied with a roll coater, enhances the adhesion between the vacuum heat insulating material and the steel plate. Even if the viscosity of the hot melt disposed between the two is reduced by temperature, the hot melt applied to the outer peripheral surface of the core part of the vacuum heat insulating material has high heat resistance, so the viscosity of the hot melt does not decrease. In addition, the displacement of the vacuum heat insulating material due to the heating of the heat insulating housing in the filling / foaming process of the hard urethane foam heat insulating material can be prevented to a higher temperature.

  In addition, there is an effect that it is possible to provide a heat insulating casing that can prevent deformation such as waving of the heat insulating casing due to peeling of the vacuum heat insulating material from the steel plate due to temperature change of the heat insulating casing installation environment when using the heat insulating casing even under higher temperature conditions. .

  Next, the constituent materials of the vacuum heat insulating material will be described in detail.

  The material used for the core material is obtained by processing a porous body having a gas phase ratio of about 90% into a sheet or plate shape, and industrially usable materials include foams, powders, and fiber bodies. . These can use a well-known material according to the use use and required characteristic.

  Among these, as the foam, open-cell bodies such as urethane foam, styrene foam, and phenol foam can be used. In addition, inorganic, organic, and mixtures thereof can be used as the powder, but industrially, powders mainly composed of dry silica, wet silica, pearlite, and the like can be used.

  In addition, inorganic, organic, and mixtures thereof can be used as the fibrous body, but inorganic fibers are advantageous from the viewpoint of cost and heat insulation performance. As an example of the inorganic fiber, a known material such as glass wool, glass fiber, alumina fiber, silica alumina fiber, silica fiber, rock wool, or the like can be used.

  In addition, mixtures of these foams, powders, fiber bodies and the like can also be applied.

  The laminate film used for the jacket material is a laminate film in which the innermost layer is a heat-welded layer, the middle layer is a gas barrier layer, a metal foil or a metal vapor-deposited layer, and the outermost layer is provided with a surface protective layer Is applicable. In addition, the laminate film may be applied by combining two types of laminate films, ie, a laminate film having a metal foil and a laminate film having a metal vapor deposition layer.

  In addition, as a heat welding layer, a low density polyethylene film, a chain low density polyethylene film, a high density polyethylene film, a polypropylene film, a polyacrylonitrile film, an unstretched polyethylene terephthalate film, an ethylene-vinyl alcohol copolymer film, or those A mixture or the like can be used.

  As the surface protective layer, known materials such as nylon film, polyethylene terephthalate film, and stretched polypropylene film can be used.

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

(Embodiment 1)
FIG. 1 is a perspective view of a heat insulating casing in Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA in FIG. Moreover, FIG. 3 is a top view of the inner surface where the vacuum heat insulating material of the heat insulating casing in Embodiment 1 of the present invention is attached. 4 is a cross-sectional view taken along line AA of FIG. 1 after completion of foaming of hard urethane.

  The vacuum heat insulating material 11 used for the heat insulating casing 10 of the present embodiment is such that a core material 12 made of glass fiber or the like is covered with a covering material 13 made of a laminate film, and the inside of the covering material 13 is decompressed and sealed. .

  The jacket material 13 includes a heat-welded layer made of polyethylene, polypropylene film, etc. from the core material 12 side, a gas barrier layer made of aluminum foil, a first protective layer made of nylon, polyethylene terephthalate film, nylon, polyethylene terephthalate, etc. The second protective layer is made of a film or the like.

  The heat insulation housing 10 constitutes a housing 15 from a steel plate 14 that does not require painting as a heat insulation housing. The inner surface 16 of the steel plate 14 constituting the casing 15 is coated with a resin-based coating such as acrylic or polyester for the purpose of preventing corrosion or the like on galvanizing.

  When installing the vacuum heat insulating material 11 on the inner surface 16 of the steel plate 14 of the heat insulating casing 10, the surface opposite to the surface 18 that is bent on the top seal portion 17 of the vacuum heat insulating material 11 and attached to the vacuum heat insulating material 11 with tape or the like. The vacuum heat insulating material 11 is installed on the casing 15 by applying a styrene rubber-based hot melt 20 to the (adhesion side surface) 19 and affixing the adhesion side surface 19 to the inner surface 16 of the steel plate 14.

  Further, styrene rubber-based hot melt 20 is applied to at least one of the covering materials 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11 (in this embodiment). 4) the outer side of the four sides 21 is applied (provided) so as to contact both the outer peripheral surface of the core member perpendicularly adjacent to the bonding side surface 19 of the core member and the inner surface 16 of the housing 15 to provide vacuum insulation. The adhesion between the material 11 and the steel plate 14 is strengthened.

  Then, after attaching the inner box 22, the cooling system pipe, and the like to the casing 15, the rigid urethane foam heat insulating material 23 is filled between the casing 15 made of the steel plate 14 and the inner box 22. At this time, the casing 15 is placed on a urethane foaming jig and kept at a temperature of about 60 ° C., and then the urethane liquid is filled between the casing 15 made of the steel plate 14 and the inner box 22 and foams. Thus, the hard urethane foam heat insulating material 23 is filled between the housing 15 and the inner box 22. Then, the heat insulation housing 10 is completed by attaching a cooling compressor or the like and filling the refrigerant.

  In the heat insulating casing 10 manufactured as described above, the inner surface 16 of the steel plate 14 of the heat insulating casing 10 is provided with a resin-based coating such as acrylic or polyester to prevent corrosion. By this resin-based coating, styrene rubber Since the adhesiveness between the hot melt 20 and the inner surface 16 of the steel sheet 14 is small, and when the hard urethane foam heat insulating material 23 is filled in the casing 15, a temperature of about 60 ° C. is applied and the reaction heat of urethane is generated. There is a problem that the vacuum heat insulating material 11 is displaced from the inner surface 16 of the steel plate 14 and the vacuum heat insulating material 11 is dropped only by applying the styrene rubber-based hot melt 20 to the adhesion side surface 11.

  On the other hand, in the present embodiment, further, the styrene rubber-based hot melt 20 is applied to the covering material 13 on the adhesion side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11. A vacuum heat insulating material is applied (provided) on the outer side of at least one side 21 so as to be in contact with both the outer peripheral surface of the core portion perpendicularly adjacent to the bonding side surface 19 of the core portion and the inner surface 16 of the casing 15. By strengthening the adhesion between the steel plate 14 and the steel plate 14, the effect of solving these problems was obtained.

  Furthermore, by strengthening the adhesive strength of the vacuum heat insulating material 11, the corrugation of the housing 15 of the heat insulating housing 10 due to the peeling of the vacuum heat insulating material 11 from the steel plate 14 due to the temperature change in the installation environment of the heat insulating housing 10 when the heat insulating housing 10 is used. The effect which can prevent a deformation | transformation of is acquired.

  In the present embodiment, the vacuum heat insulating material 11 is sealed from the core material among the fin-shaped seal portions formed on the outer peripheral portion of the vacuum heat insulating material 11 so that the hard urethane foam heat insulating material 23 can be uniformly filled. Although the example in which only the longest (wide) top seal portion 17 is bent up to the end of the portion has been shown, the other seal portions may be further bent. Further, it is not always necessary to bend the seal portion.

(Embodiment 2)
FIG. 5 is a plan view of the inner surface to which the vacuum heat insulating material of the heat insulating casing in Embodiment 2 of the present invention is attached.

  In the present embodiment, at least one of the covering materials 13 on the bonding side surface 19 of the core portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11 in the first embodiment (this embodiment Then, the coating is applied (provided) on the outer side of the four sides 21 so as to be in contact with both the outer peripheral surface of the core member perpendicularly adjacent to the bonding side surface 19 of the core member and the inner surface 16 of the housing 15, and vacuum. Instead of the styrene rubber-based hot melt 20 that reinforces the adhesion between the heat insulating material 11 and the steel plate 14, a second hot melt 24 having higher heat resistance than the styrene rubber-based hot melt 20 is used. These are the same as those in the first embodiment, and the description of the same configurations as those in the first embodiment is omitted.

  Since the second hot melt 24 cannot be applied by a roll coater like the hot melt 20, it is applied by a coating jig.

  In the present embodiment, the second hot melt 24 having higher heat resistance than the styrene rubber-based hot melt 20 is bonded to the side surface 19 of the core material portion having the core material 12 between the jacket materials 13 in the vacuum heat insulating material 11. The outer peripheral surface of the core member and the inner surface 16 of the casing 15 that are perpendicularly adjacent to the bonding side surface 19 of the core member on the outside of the side 21 of at least one of the outer cover members 13 (four in this embodiment). Since the adhesion between the vacuum heat insulating material 11 and the steel plate 14 was strengthened by applying (providing) both in contact with each other, the vacuum heat insulating material from the steel plate 14 due to the temperature change in the installation environment of the heat insulating housing 10 when the heat insulating housing 10 is used. The effect of preventing deformation such as undulation of the casing 15 of the heat insulating casing 10 due to the peeling of 11 even under higher temperature conditions can be obtained.

  At this time, since the second hot melt 24 has a higher heat resistance temperature than the conventional hot melt 20, even if the temperature environment at the time of filling the hard urethane foam heat insulating material 23 and using the heat insulating casing 10 is somewhat higher, the conventional problem The effect which can suppress generation | occurrence | production of is acquired.

  Further, in the present embodiment, the second hot melt 24 having higher heat resistance than the hot melt 20 is applied to the outside of the adhesion side surface 19 of the core material portion having the core material 12 between the jacket materials 13 in the vacuum heat insulating material 11. On the outer side of at least one side 21 (four in the present embodiment) of the substrate 13, both on the outer peripheral surface of the core member perpendicularly adjacent to the bonding side surface 19 of the core member and on the inner surface 16 of the housing 15. By applying (providing) in contact with each other and strengthening the adhesion between the vacuum heat insulating material 11 and the steel plate 14, the thickness of the hot melt 20 applied to the surface 19 of the vacuum heat insulating material 11 is reduced as necessary. The effect that the amount can be reduced is obtained.

(Embodiment 3)
FIG. 6 is a plan view of the inner surface to which the vacuum heat insulating material of the heat insulating casing in Embodiment 3 of the present invention is attached.

  In the first embodiment, at least one side (four in the first embodiment) of the covering material 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11. A styrene rubber-based hot melt 20 is applied to the outer side of 21 so as to be in contact with both the outer peripheral surface of the core part perpendicularly adjacent to the adhesion side surface 19 of the core part and the inner surface 16 of the casing 15. In the third embodiment, the adhesion between the vacuum heat insulating material 11 and the steel plate 14 has been strengthened. On the outside of at least two corner portions (four corner portions in the third embodiment) 25 adjacent to the workpiece 13, a styrene rubber-based hot melt 20 is perpendicularly adjacent to the bonding side surface 19 of the core portion. In contact with both the outer peripheral surface of the portion and the inner surface 16 of the housing 15 It was coated by a coating jig as Te (provided), and enhance the adhesion of the vacuum insulation material 11 and the steel plate 14. Other configurations are the same as those of the first embodiment, and the description of the same configurations as those of the first embodiment is omitted.

  In the present embodiment, at least two adjacent corner portions (4 in the third embodiment) of the covering material 13 on the adhesion side surface 19 of the core material portion having the core material 12 between the covering material 13 in the vacuum heat insulating material 11. The styrene rubber-based hot melt 20 is applied to the outside of the two corner portions 25 so as to come into contact with both the outer peripheral surface of the core portion and the inner surface 16 of the casing 15 adjacent to the bonding side surface 19 of the core portion. However, since the adhesion between the vacuum heat insulating material 11 and the steel plate 14 was reinforced, an effect of solving the conventional problems was obtained.

  Further, by strengthening the adhesion of the vacuum heat insulating material 11, the corrugation of the housing 15 of the heat insulating housing 10 due to the peeling of the vacuum heat insulating material 11 from the steel plate 14 due to the temperature change of the installation environment of the heat insulating housing 10 when the heat insulating housing 10 is used. The effect which can prevent deformation | transformation etc. is acquired.

  Moreover, the effect which can reduce the application | coating thickness of the hot melt 20 apply | coated to the surface 19 of the vacuum heat insulating material 11 as needed, and can reduce the quantity is acquired.

  Moreover, in the adhesion between the vacuum heat insulating material 11 and the steel 14 plate, the corner portion 25 of the core material 12 that is likely to be peeled off is more firmly fixed by the hot melt 20 to prevent the corner portion 25 from floating. In addition, it is possible to prevent the hard urethane foam heat insulating material 23 from entering when the hard urethane foam heat insulating material 23 is filled and foamed.

(Embodiment 4)
FIG. 7 is a plan view of the inner surface to which the vacuum heat insulating material of the heat insulating casing in Embodiment 4 of the present invention is attached.

  In the present embodiment, at least two corner portions adjacent to the covering material 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering material 13 in the vacuum heat insulating material 11 in the third embodiment ( In Embodiment 3, it is applied to the outer side of the four corner portions) 25 so as to contact both the outer peripheral surface of the core portion perpendicularly adjacent to the bonding side surface 19 of the core portion and the inner surface 16 of the casing 15 (provided) Thus, instead of the styrene rubber-based hot melt 20 that strengthens the adhesion between the vacuum heat insulating material 11 and the steel plate 14, the second hot melt 24 having higher heat resistance than the styrene rubber-based hot melt 20 is used. The other configuration is the same as that of the third embodiment, and the description of the same configuration as that of the third embodiment is omitted.

  Since the second hot melt 24 cannot be applied by a roll coater like the hot melt 20, it is applied by a coating jig.

  In the present embodiment, the second hot melt 24 having higher heat resistance than the styrene rubber-based hot melt 20 is bonded to the side surface 19 of the core material portion having the core material 12 between the jacket materials 13 in the vacuum heat insulating material 11. The outer peripheral surface of the core member and the casing 15 that are adjacent to the bonding side surface 19 of the core member perpendicularly to the outside of at least two corner portions (four corner portions in the present embodiment) 25 adjacent to the outer cover member 13. Since the adhesion between the vacuum heat insulating material 11 and the steel plate 14 was strengthened by applying (providing) so as to be in contact with both of the inner surfaces 16 of the steel plate 14, the steel plate 14 was changed due to the temperature change in the installation environment of the heat insulating housing 10. It is possible to obtain an effect of preventing deformation such as waving of the casing 15 of the heat insulating casing 10 due to the peeling of the vacuum heat insulating material 11 even under higher temperature conditions.

  At this time, since the second hot melt 24 has a higher heat resistance temperature than the conventional hot melt 20, even if the temperature environment at the time of filling the hard urethane foam heat insulating material 23 and using the heat insulating casing 10 is somewhat higher, the conventional problem The effect which can suppress generation | occurrence | production of is acquired.

  Further, in the present embodiment, the second hot melt 24 having higher heat resistance than the hot melt 20 is applied to the outside of the adhesion side surface 19 of the core material portion having the core material 12 between the jacket materials 13 in the vacuum heat insulating material 11. On the outer side of at least one side 21 (four in the present embodiment) of the substrate 13, both on the outer peripheral surface of the core member perpendicularly adjacent to the bonding side surface 19 of the core member and on the inner surface 16 of the housing 15. By applying (providing) in contact with each other and strengthening the adhesion between the vacuum heat insulating material 11 and the steel plate 14, the thickness of the hot melt 20 applied to the surface 19 of the vacuum heat insulating material 11 is reduced as necessary. The effect that the amount can be reduced is obtained.

(Embodiment 5)
FIG. 8 is a plan view of the inner surface to which the vacuum heat insulating material of the heat insulating casing in the fifth embodiment of the present invention is attached.

  In the first embodiment, at least one side (four in the first embodiment) of the covering material 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11. A styrene rubber-based hot melt 20 is applied to the outer side of 21 so as to be in contact with both the outer peripheral surface of the core part perpendicularly adjacent to the adhesion side surface 19 of the core part and the inner surface 16 of the casing 15. In the fifth embodiment, the adhesion between the vacuum heat insulating material 11 and the steel plate 14 has been strengthened. However, in the fifth embodiment, the outer side of the adhesion side surface 19 of the core material portion having the core material 12 between the outer covering materials 13 in the vacuum heat insulating material 11. A styrene rubber-based hot melt 20 is provided outside at least one side 21 of the substrate 13 (four in the fifth embodiment) and outside of at least one corner (four corners in the fifth embodiment) 25. Is vertically adjacent to the adhesive side surface 19 of the core part. It was coated by a coating jig so as to be in contact with both the inner 16 of the outer peripheral surface and the housing 15 of the timber portion Te (provided), and enhance the adhesion of the vacuum insulation material 11 and the steel plate 14. Other configurations are the same as those of the first embodiment, and the description of the same configurations as those of the first embodiment is omitted.

  In the present embodiment, at least one (four in the fifth embodiment) sides of the covering material 13 of the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11. A styrene rubber-based hot melt 20 is placed on the outer side of 21 and at least one corner part (four corner parts in the fifth embodiment) 25, and the core part adjacent to the bonding side surface 19 of the core part. Since it applied (provided) so as to contact both the outer peripheral surface and the inner surface 16 of the casing 15 to strengthen the adhesion between the vacuum heat insulating material 11 and the steel plate 14, the effect of solving the conventional problems was obtained.

  Furthermore, by strengthening the adhesive strength of the vacuum heat insulating material 11, the corrugation of the housing 15 of the heat insulating housing 10 due to the peeling of the vacuum heat insulating material 11 from the steel plate 14 due to the temperature change in the installation environment of the heat insulating housing 10 when the heat insulating housing 10 is used. The effect which can provide the heat insulation housing | casing 10 which can prevent a deformation | transformation of is acquired.

  The present embodiment has a configuration in which the first embodiment and the third embodiment are combined, and the vacuum heat insulation in the third embodiment is combined with the adhesive force between the vacuum heat insulating material 11 and the steel plate 14 in the first embodiment. Adhesive strength between the material 11 and the steel plate 14 is added, and both effects are combined.

(Embodiment 6)
FIG. 9 is a plan view of the inner surface to which the vacuum heat insulating material of the heat insulating casing in the sixth embodiment of the present invention is attached.

  In the present embodiment, at least one of the covering materials 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11 in the fifth embodiment (Embodiment 5). The outer peripheral surface of the core member perpendicularly adjacent to the bonding side surface 19 of the core member on the outer side of the four sides 21 and the outer side of at least one corner portion (four corner portions in the fifth embodiment) 25. Instead of the styrene rubber-based hot melt 20 that is applied (provided) so as to be in contact with both the inner surfaces 16 of the housing 15 and strengthens the adhesion between the vacuum heat insulating material 11 and the steel plate 14, the styrene rubber-based hot melt 20 is used. The second hot melt 24 having high heat resistance is used, and the other configuration is the same as that of the fifth embodiment, and the description of the same configuration as that of the fifth embodiment is omitted.

  In the present embodiment, at least one (four in the sixth embodiment) sides of the covering material 13 on the bonding side surface 19 of the core material portion having the core material 12 between the covering materials 13 in the vacuum heat insulating material 11. A second hot melt 24 having higher heat resistance than the styrene rubber-based hot melt 20 is bonded to the outer side of 21 and at least one corner part (four corner parts in the sixth embodiment) 25. Since it was applied (provided) so as to be in contact with both the outer peripheral surface of the core portion perpendicularly adjacent to the side surface 19 and the inner surface 16 of the casing 15, the adhesion between the vacuum heat insulating material 11 and the steel plate 14 was reinforced, so that the conventional problem The effect that can be solved was obtained.

  Furthermore, by strengthening the adhesive strength of the vacuum heat insulating material 11, the corrugation of the housing 15 of the heat insulating housing 10 due to the peeling of the vacuum heat insulating material 11 from the steel plate 14 due to the temperature change in the installation environment of the heat insulating housing 10 when the heat insulating housing 10 is used. The effect which can provide the heat insulation housing | casing 10 which can prevent a deformation | transformation of is acquired.

  At this time, since the second hot melt 24 has a higher heat resistance temperature than the conventional hot melt 20, even if the temperature environment at the time of filling the hard urethane foam heat insulating material 23 and using the heat insulating casing 10 is somewhat higher, the conventional problem The effect which can suppress generation | occurrence | production of is acquired.

  Furthermore, the application of the hot melts 20 and 24 to the sides 21 and corners 25 of the vacuum heat insulating material 11 can be freely determined depending on the flow direction of the hard urethane foam heat insulating material 23 and the foaming temperature. The effect that the optimal application form can be selected is obtained.

  As described above, the heat insulating housing according to the present invention is filled with the hard urethane foam heat insulating material into the heat insulating housing by the adhesive force of hot melt applied to the vacuum heat insulating material after the vacuum heat insulating material is bonded and disposed on the steel plate. The effect which can prevent the shift | offset | difference of the vacuum heat insulating material by the heating of a heat insulation housing | casing in a foaming process is acquired. The heat insulation housing produced by this method is not limited to the refrigerator-freezer, but can be applied to uses such as prefabs and containers.

The perspective view of the heat insulation housing in Embodiment 1 of this invention AA line sectional view of FIG. The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing | casing in Embodiment 1 of this invention AA line cross-sectional view of FIG. 1 after the completion of rigid urethane foaming The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing | casing in Embodiment 2 of this invention The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing in Embodiment 3 of this invention The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing in Embodiment 4 of this invention The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing in Embodiment 5 of this invention The top view of the inner surface which affixed the vacuum heat insulating material of the heat insulation housing | casing in Embodiment 6 of this invention Sectional drawing which shows the manufacture process of the refrigerator which affixed the vacuum heat insulating material on the inner surface of the conventional outer box shown by patent document 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heat insulation housing | casing 11 Vacuum heat insulating material 12 Core material 13 Cover material 14 Steel plate 15 Housing 16 Inner surface 19 Adhesion side surface 20 Hot melt 21 Side 24 2nd hot melt 25 Corner part

Claims (4)

  Styrene provided on a bonding side surface of the vacuum heat insulating material, wherein a vacuum heat insulating material is formed by covering the core material with a cover material having a laminate structure having at least a heat-welded layer and a gas barrier layer and sealing the inside of the outer cover material under reduced pressure. A core part having the core material between the outer jacket materials of the vacuum heat insulating material, which is bonded and disposed on the inner surface side of the casing made of a steel plate having a resin coating layer on the inner surface side by a rubber-based hot melt Styrene so as to be in contact with both the outer peripheral surface of the core material portion and the inner surface of the casing that are perpendicularly adjacent to the adhesive side surface of the core material portion on the outer side of at least one side of the covering material of the adhesive side surface A heat-insulating housing provided with a rubber-based hot melt.   Styrene provided on a bonding side surface of the vacuum heat insulating material, wherein a vacuum heat insulating material is formed by covering the core material with a cover material having a laminate structure having at least a heat-welded layer and a gas barrier layer and sealing the inside of the outer cover material under reduced pressure. A core part having the core material between the outer jacket materials of the vacuum heat insulating material, which is bonded and disposed on the inner surface side of the casing made of a steel plate having a resin coating layer on the inner surface side by a rubber-based hot melt On the outer side of at least two corners adjacent to the outer cover material on the adhesive side surface of the core member so as to contact both the outer peripheral surface of the core member portion and the inner surface of the casing perpendicularly adjacent to the adhesive side surface of the core member portion And a heat insulating housing provided with a styrene rubber hot melt.   Styrene provided on a bonding side surface of the vacuum heat insulating material, wherein a vacuum heat insulating material is formed by covering the core material with a cover material having a laminate structure having at least a heat-welded layer and a gas barrier layer and sealing the inside of the outer cover material under reduced pressure. A core part having the core material between the outer jacket materials of the vacuum heat insulating material, which is bonded and disposed on the inner surface side of the casing made of a steel plate having a resin coating layer on the inner surface side by a rubber-based hot melt On the outer side of at least one side of the outer cover material and on the outer side of at least one corner of the outer side of the core, and the outer peripheral surface of the core part perpendicularly adjacent to the adhesive side of the core part and the inner surface of the casing A heat insulating housing provided with a styrene rubber-based hot melt so as to be in contact with both.   Styrene rubber-based hot melt provided so as to contact both the outer peripheral surface of the core material portion and the inner surface of the casing, which are perpendicularly adjacent to the adhesive side surface of the core material portion, is styrene provided on the adhesive side surface of the vacuum heat insulating material. The heat-insulating housing according to any one of claims 1 to 3, wherein the heat-resistant temperature is higher than that of a rubber-based hot melt.

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