JPWO2005057077A1 - Thermal insulation panel and thermal insulation structure using the same - Google Patents

Abstract

Provided is a heat insulating panel that is easy to manufacture and capable of maintaining its shape, and also has excellent heat insulation, sound insulation, anti-condensation effect, and strength. The heat insulating panel 10 has a rectangular shape as a whole, and includes a curved surface portion 12 in which two opposing main surfaces 16 and 18 bulge in the same direction, and a flat surface portion 14 around the curved surface portion 12. The periphery of the main surfaces 16 and 18 is sealed with an edge 20, and the hollow portion inside thereof is in a reduced pressure state or a vacuum state. By making the hollow part between the main surfaces 16 and 18 into a vacuum, it is possible to obtain excellent heat insulation and sound insulation and to prevent condensation. In addition, since almost the entire main surfaces 16 and 18 are curved in the same direction, the stress applied to the center of the main surfaces 16 and 18 is dispersed when the hollow portion is evacuated, and the strength of the heat insulating panel 10 is increased. It can be raised to maintain its shape.

Description

  The present invention relates to a heat insulating panel having a heat insulating property or a sound insulating property and a heat insulating structure using the same, and more specifically to an improvement of a heat insulating panel including a vacuum layer or a reduced pressure layer.

  Conventionally, in order to provide high heat insulation and soundproofing, panels and blocks provided with a vacuum layer and a decompression layer inside have been used as building members and interior materials. In such a panel or the like, various materials such as a honeycomb core, a stud, glass wool, and powder are inserted into the hollow portion as a spacing member in order to maintain a vacuum layer. For this reason, not only the weight of the entire panel increases, but also inconveniences that it takes time to manufacture and the cost increases.

For example, a vacuum panel shown in the following Patent Document 1 has been proposed as a solution to the above-described inconvenience. According to this, a sheet-like vacuum panel is constituted by a vacuum panel unit body that is provided with a closing member on an end surface of a cylindrical unit body that is integrally formed of a synthetic resin and is kept in a vacuum state. Reinforcing ribs protruding vertically are provided inside the body. And when the inside of a cylindrical unit body is evacuated, the front-end | tip part of the said upper and lower reinforcement ribs mutually contacts, and the shape and intensity | strength of a panel are maintained.
JP 2003-42651 A

  However, in the background art as described above, a single vacuum panel unit is cylindrical, so that sufficient heat insulation and sound insulation cannot be exhibited. It is necessary to form a sheet-like vacuum panel by connecting the bodies. However, since a process for assembling individually manufactured panel units is required, the manufacturing process takes time, and it becomes difficult to avoid the inconvenience as a large panel is obtained.

  The present invention focuses on the above points, and its purpose is to provide a heat insulating panel having a high heat insulating property, a sound insulating property, and a strength while maintaining a shape while being easy to manufacture with a simple structure. It is providing the heat insulation structure using it.

  In order to achieve the above object, the present invention provides a heat insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is hermetically sealed and the inside is in a vacuum state or a reduced pressure state. The whole has a shape curved in the same direction.

  Another invention is a heat insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is hermetically sealed and the inside is in a vacuum state or a reduced pressure state. A plurality of curved surfaces bulging in the same direction are provided substantially concentrically so as to correspond to the positions between the two main surfaces.

  Still another invention is a heat insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is hermetically sealed and the inside is in a vacuum state or a reduced pressure state, and the two main surfaces are curved or expanded in the same direction. A plurality of curved surface portions are provided, and a portion other than the curved surface portion is a flat flat surface portion. One of the main forms is that by providing a plurality of curved surfaces obtained by bulging the two main surfaces in the same direction in a substantially concentric shape so as to correspond to the positions between the two main surfaces, A curved surface portion is formed.

  In another embodiment, a plurality of spacers each having a curved surface portion with a substantially central portion bulging in one side and a flat surface portion formed around the curved surface portion are opposed to each other inside the flat surface portions of the two main surfaces. The top portion of the curved surface portion of the spacer is in point contact with the inside of the main surface. Alternatively, a plurality of spacers each having at least one curved surface portion or curved portion capable of making point contact with each other are provided between the two principal surfaces inside the planar portions of both of the two principal surfaces. . Yet another embodiment is characterized in that the cross section of the curved surface is arcuate or corrugated.

  Still another invention is a heat insulating panel in which the periphery of two flat main surfaces facing each other at a predetermined interval is hermetically sealed and the inside thereof is in a vacuum state or a reduced pressure state, and a curved surface with a substantially central portion bulging to one side And a plurality of spacers each having a flat portion formed around the curved surface portion are disposed at positions facing the inner surfaces of the two main surfaces, and the top of the curved surface portion is disposed on the main surface. It is characterized by point contact inside.

  Still another invention is a heat insulating panel in which the periphery of two flat main surfaces corresponding to each other at a predetermined interval is hermetically sealed and the inside thereof is in a vacuum state or a depressurized state, and is disposed inside both of the two main surfaces. A plurality of spacers each having at least one curved surface portion or curved portion capable of point contact are provided between the two main surfaces.

  The heat insulation structure of the present invention is characterized in that a plurality of heat insulation panels according to any one of claims 1 to 9 are used. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, the hollow portions of two main surfaces facing each other at a predetermined interval are set in a vacuum state or a reduced pressure state, and (1) almost the entire main surface is curved in the same direction. A plurality of curved surfaces bulging in the same direction are provided on substantially the entire surface or a substantially central portion, and (3) a plurality of curved surface portions in which the two main surfaces are curved or bulged in the same direction are provided, and the curved surface portion The portion other than is a flat plane portion, and preferably, the curved surface portion of the spacer is point-contacted inside the flat surface portion, or (4) the spacer having the curved surface portion is point-contacted inside the flat main surface. As a result, it is possible to maintain the shape while being easy to manufacture, and further, there is an effect that a heat insulating panel excellent in heat insulating effect, soundproofing effect and strength can be obtained.

1A and 1B are diagrams showing a first embodiment of the present invention, in which FIG. 1A is a perspective view showing an overall configuration, and FIG. 1B is a sectional view taken along line # A- # A in the direction of an arrow. The sectional view seen, (C) is a main sectional view showing a modification of the present embodiment. 2A and 2B are diagrams showing a second embodiment of the present invention, in which FIG. 2A is a perspective view showing the overall configuration, and FIG. The sectional view seen, (C) is a main sectional view showing a modification of the present embodiment. FIGS. 3A and 3B are views showing a third embodiment of the present invention, in which FIG. 3A is a front view showing the entire roof using the present embodiment, and FIG. 3B is a perspective view showing the configuration of the panel of the present embodiment. FIG. 4A and 4B are diagrams showing a fourth embodiment of the present invention, in which FIG. 4A is a cross-sectional view showing the configuration of the present embodiment, FIG. The figure which shows the mode of the assembly of the panel of an Example, (D) is a figure which shows the modification of a spacer. 5A and 5B are diagrams showing Embodiment 5 of the present invention, in which FIG. 5A is a view showing an assembly example, and FIG. 6A and 6B are diagrams showing another embodiment of the present invention. FIG. 6A is a perspective view showing the sixth embodiment, and FIG. 6B is a perspective view showing the seventh embodiment. 7A and 7B are diagrams showing another embodiment of the present invention, in which FIG. 7A is a plan view showing an embodiment 8, and FIG. 7B is a cross-section taken along line # C- # C. FIG. 4C is a plan view showing the ninth embodiment. 8A and 8B are views showing Embodiment 10 of the present invention, in which FIG. 8A is a main cross-sectional view showing the configuration of this embodiment, FIG. 8B is a perspective view showing the structure of the spacer of this embodiment, and FIG. FIG. 9 is a cross-sectional view showing a spacer according to a modification of this embodiment, and FIG. 9D is a perspective view showing a spacer according to another modification of this embodiment.

Explanation of symbols

10: heat insulation panel 12: curved surface portion 14: flat surface portion 16, 18: main surface 20: edge 30: heat insulating panel 32: curved surface portion 32A, 32B: curved surface shape 36, 38: main surface 40: edge 42: heat insulating panel 44, 46: Main surface 50, 60: Thermal insulation panel 52, 54, 62, 64: Main surface 56, 66: Edge 68: Roof 70: Thermal insulation panel 72, 76: Main surface 74, 78: Edge 80, 86: Spacer 82, 87: Curved portion 84, 88: Plane portion 90: Heat insulation structure 92: Heat insulation panel 92A: Edge portion 94: Step 96: Heat insulation panel 96A, 96B: Main surface 96C: Recess 97: Groove 98: Step 100: Heat insulation panel 102 : Main surface 106: Side surface 108: Gas stove 110: Heat insulation panel 112: Boiler 114: Piping 120: Heat insulation panel 122, 124: Main surface 126: Edge 128: Plane portion 130: Curved surface 150: heat insulating panel 152: flat surface portion 154: curved surface portions 154A to 154D: curved surface shape 160: heat insulating panels 162, 164: main surfaces 166, 174, 180: spacers 168, 172, 176, 178, 182: curved surface portion 170: flat surface Part 184: protrusion

  While there may be many embodiments of the present invention, an appropriate number of examples are given and described in detail.

  First, Embodiment 1 of the present invention will be described with reference to FIG. 1A is a perspective view showing the appearance of the present embodiment, and FIG. 1B is a cross-sectional view of FIG. 1A cut along the line # A- # A and viewed in the direction of the arrow. FIG. FIG. 1C is a cross-sectional view showing a modification of this embodiment. As shown in FIG. 1, the heat insulation panel 10 of the present embodiment is a square as a whole, and has a curved surface portion 12 that bulges (or curves) in one direction from a substantially central portion to almost the entire portion, and its periphery is A flat plane portion 14 is formed. Such a heat insulation panel 10 has two main surfaces 16 and 18 bulging in the same direction opposite to each other at a predetermined interval, and is sealed by providing an edge 20 around the main surface 16 and 18, and the hollow portion is in a vacuum state (or close to vacuum) (Depressurized state) can be maintained. The main surfaces 16 and 18 and the edge 20 are made of various known materials as long as they can withstand vacuum, such as a metal plate such as aluminum or iron, a synthetic resin plate or a ceramic plate. be able to.

  Next, an example of the manufacturing process of a present Example is demonstrated. For example, the main surfaces 16 and 18 provided with curved surfaces bulging in the same direction from the substantially central portion to almost the whole in advance are arranged to face each other at a predetermined interval in a vacuum atmosphere or a reduced pressure atmosphere, and the edge 20 is bonded to the periphery thereof. And seal. When the assembly is completed, the heat insulation panel 10 in which the hollow portion is in a vacuum or in a reduced pressure state is obtained by taking out from the vacuum atmosphere (or in a reduced pressure atmosphere) under normal pressure. Under normal pressure, the air pressure inside the heat insulating panel 10 is lower, so that the main surfaces 16 and 18 are each subjected to a force that deforms toward the inside. Since the curved surface portion 12 is provided, the force applied to the center of the main surface is dispersed as compared with a flat case. Therefore, the overall shape can be substantially maintained without being extremely deformed. Further, for example, the main surfaces 16 and 18 having the above-described shape are arranged to face each other at a predetermined interval under normal pressure, and the edge 20 is adhered and sealed around the main surfaces 16 and 18. Thereafter, a suction needle connected to a vacuum suction device (not shown) is inserted into an appropriate position to suck the air in the hollow portion, and the internal air is removed until a predetermined degree of vacuum is obtained, whereby the heat insulating panel 10 is manufactured. You may do it. In this case, as the air is deaerated, the pressure inside the heat insulating panel 10 decreases, and the main surfaces 16 and 18 start to deform inward, but the substantially arc-shaped curved surface portion 12 is provided almost entirely. Compared with the flat case, the force applied to the center of the main surface is dispersed, and the overall shape can be substantially maintained.

  The heat insulation panel 10 as described above is disposed in a place where heat insulation, sound insulation, or prevention of condensation is desired, such as a building wall, ceiling, partition, etc., for example, such that the bulging side of the curved surface portion 12 faces the room or the like. However, it may be installed in the opposite direction as necessary, or may be installed by changing the vertical and horizontal directions arbitrarily. In the present embodiment, the flat surface portion 14 is provided around the curved surface portion 12. However, as shown in FIG. 1C, the entire main surfaces 16 and 18 are curved without providing the flat surface portion. You may make it be a shape.

Thus, according to the first embodiment, there are the following effects.
(1) By making the hollow part between the two main surfaces 16 and 18 of the heat insulation panel 10 into a vacuum, excellent heat insulation properties, soundproof properties (sound insulation properties), and dew condensation prevention effects can be obtained.
(2) Since the curved surface portion 12 bulging in the same direction is formed from substantially the central portion of both the main surfaces 16 and 18 or the entire heat insulating panel 10 is formed into a curved shape. The stress applied to the center of the main surface is dispersed when the hollow portion between the surfaces 16 and 18 is in a vacuum or reduced pressure state. For this reason, while the intensity | strength of the heat insulation panel 10 becomes high, a shape maintenance is attained.
(3) Manufacture is easy because of the structure that does not require a shape-retaining reinforcing material inside the main surfaces 16 and 18.

  Next, Embodiment 2 of the present invention will be described with reference to FIG. 2A is a perspective view showing the appearance of the present embodiment, and FIG. 2B is a cross-sectional view of FIG. 2A cut along line # B- # B and viewed in the direction of the arrow. It is a figure which shows a state. FIG. 2C is a cross-sectional view showing a modification of this embodiment. In the first embodiment described above, almost the entire front and back main surfaces of the heat insulating panel are formed in a shape curved in the same direction, but this embodiment is an example in which a plurality of curved surfaces are provided on the front and back main surfaces. .

  As shown in FIG. 2, the heat insulation panel 30 of the present embodiment is generally rectangular, and a plurality of curved surface portions 32 are formed concentrically from substantially the center portion to the edge portion. As shown in the cross section of FIG. 2 (B), the heat insulating panel 30 has two main surfaces 36 and 38 arranged opposite to each other at a predetermined interval, and the periphery thereof is sealed by an edge 40. It is in a vacuum state. In the present embodiment, a plurality of concentric curved surface shapes 32A and 32B bulging in the same direction are formed at corresponding positions on the main surfaces 36 and 38, respectively. The curved surface portion 32 is formed by these curved surface shapes 32A and 32B. The main surfaces 36 and 38 and the edge 40 are made of the same material as that of the first embodiment.

  According to the second embodiment, a plurality of curved surfaces 32A and 32B bulging (projecting) in the same direction are provided concentrically at positions corresponding to each other on the main surfaces 36 and 38, respectively. It is possible to obtain the heat insulating panel 30 that reinforces the main surfaces 36 and 38, has high strength, and can maintain the shape. Other operations and effects are the same as those of the first embodiment described above. In addition, the cross-sectional shape of the curved surface portion 32 in this embodiment is an example, and as shown in FIG. 2 (C), the main surfaces 44 and 46 constituting the heat insulation panel 42 are formed so that the cross section has a continuous waveform. However, the same effect can be obtained.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. In this embodiment, the heat insulating panel of the present invention is used as a tile provided on a roof of a house or the like. FIG. 3A is a front view showing the entire roof using the heat insulation panel of this embodiment, and FIG. 3B is a view showing the structure of the heat insulation panel. As shown in FIG. 3 (B), in this embodiment, the heat insulating panels 50 and 60 are alternately overlapped and used. The heat insulation panel 50 has a substantially square shape as a whole, the periphery of two main surfaces 52 and 54 curved in the same direction is sealed by an edge 56, and the inner hollow portion is in a vacuum or reduced pressure state. . The other heat insulating panel 60 has basically the same configuration, and the two main surfaces 62 and 64 that are curved in the same direction are hermetically sealed by an edge 66, and the hollow portion is in a vacuum or reduced pressure state. It is a thing. The heat insulating panel 50 is set to be slightly wider than the heat insulating panel 60 and to be gently curved.

  The heat insulation panels 50 and 60 as described above are provided so as to be alternately arranged on the roof 68. For example, it arrange | positions so that the main surface 52 (convex side of a curved surface) of the heat insulation panel 50 may face outside, and the main surface 64 (convex side of a curved surface) of the heat insulation panel 60 faces inward, ie, the side which contact | connects the roof 68. It is a condition of arranging. As described above, according to the third embodiment, by providing the heat insulating panels 50 and 60 on the roof 68 instead of the tiles, in addition to the heat insulating effect shown in the above-described embodiments, rain water or the like is added to the main surface 62 of the heat insulating panel 60. It is also possible to obtain the effect of discharging through the (concave side of the curved surface). In addition, you may make it aim at heat insulation etc. by providing the heat insulation panel 50 or 60 in the boundary part of the top part of the roof 68 as needed. In addition, by forming the heat insulating panels 50 and 60 according to the tile standards (shape and dimensions), the heat insulating panels 50 and 60 can be easily used in place of the existing roof tiles.

  Next, Embodiment 4 of the present invention will be described with reference to FIG. FIG. 4A is a cross-sectional view of the present embodiment, FIG. 4B is a view showing the structure of the spacer, and FIG. 4C is a view showing an assembly state of the present embodiment. In Examples 1 to 3 described above, almost all of the heat insulation panel has a curved shape, or a curved portion is formed on the substantially central portion or substantially the entire surface of the heat insulation panel. This is an example in which the main surface constituting the panel is flat, and a spacer is provided as an interval maintaining material or a reinforcing material inside thereof. As shown in FIG. 4 (A), the heat insulation panel 70 of this embodiment has a plurality of spacers 80 on the inner side of two flat main surfaces 72 and 76 having a rectangular shape facing each other at a predetermined interval. It is provided by contact. Around the main surfaces 72 and 76, edges 74 and 78 having a predetermined width are provided, respectively. Further, as shown in FIG. 4B, the spacer 80 has a curved surface portion 82 whose substantially central portion bulges to one side, and the periphery thereof is a flat plane portion 84. That is, the whole has a square shape similar to that of the first embodiment shown in FIGS. Such a spacer 80 may be formed by a single plate material, or in the same manner as in the first embodiment, two plate materials are arranged opposite to each other and sealed, and the inside is vacuumed or depressurized as necessary. It may be a simple structure. The main surfaces 72 and 76 are made of the same material as that of the above-described embodiment, for example. The spacer 80 is also made of the same material as the main surfaces 72 and 76, but may be formed using a different material if necessary.

  Next, the assembly method of a present Example is demonstrated. As shown in FIG. 4C, the spacer 80 is attached by brazing or spot welding so that the top of the curved surface portion 82 is in contact with the inside of the two main surfaces 72 and 76. The spacer 80 is fixed so that when the main surfaces 72 and 76 are combined, the spacer 80 attached to each main surface is in a corresponding position. In the illustrated example, two main surfaces 72 and 76 are attached to each of the main surfaces 72 and 76 at positions away from the edges 74 and 78, but the number may be changed as necessary. . After the spacer 80 is attached, the main surfaces 72 and 76 are brought together and the edges 74 and 78 are bonded together by appropriate means. The assembling operation as described above is performed in an atmosphere set in advance in a vacuum state or a reduced pressure state. When the assembly is completed, the pressure is taken out under normal pressure. However, since the air pressure inside the heat insulating panel 70 is lower, external pressure is applied to the main surfaces 72 and 76, and a deforming force acts so as to be recessed toward the inside. However, in this embodiment, the flat portions 84 of the spacers 80 provided inside the respective main surfaces come into contact with each other to prevent the main surfaces 72 and 76 from being dented and deformed, and a vacuum layer or a decompression layer is formed. Can be maintained. Similarly to the first embodiment, the main surfaces 72 and 76 are combined, and the edges 74 and 78 are bonded together by appropriate means, and then the hollow portion is decompressed by a vacuum suction device (not shown) until a predetermined degree of vacuum is reached. Even if it does so, the same heat insulation panel 70 can be obtained.

Thus, according to the fourth embodiment, there are the following effects.
(1) By making the hollow part between the main surfaces 72 and 76 of the heat insulation panel 70 into a vacuum or a reduced pressure state, excellent heat insulation and sound insulation can be obtained.
(2) Since the spacers 80 that also serve as a spacing member and a reinforcing material are provided inside the main surfaces 72 and 76, the strength of the heat insulating panel 70, particularly the strength against the force perpendicular to the main surfaces 72 and 76, is provided. In addition, the space of the vacuum layer can be maintained by maintaining the shape.
(3) The top portion of the curved surface portion 82 of the spacer 80 is in point contact with the inside of the main surfaces 72 and 76, and the contact area is very small, so that the heat insulation effect by the vacuum layer or the decompression layer is hardly hindered. .
(4) Since the main surfaces 72 and 76 are combined after the spacer 80 is attached to the main surfaces 72 and 76, the manufacturing is easy. Further, by increasing or decreasing the number of spacers 80, it is possible to flexibly cope with the shape and size of the main surfaces 72 and 76.

  Next, Embodiment 5 of the present invention will be described with reference to FIG. FIG. 5A is a view showing an assembly example when a plurality of heat insulation panels of the present invention are used, and FIG. 5B is a cross-sectional view showing a connecting portion of the heat insulation panels. As shown in FIG. 5, the heat insulation structure 90 of this embodiment has a structure in which a plurality of heat insulation panels 92 and 96 are combined. The heat insulation panel 96 also serves as a connecting material for connecting the plurality of heat insulation panels 92. As the heat insulation panel 92, the one having basically the same configuration as that of the above-described fourth embodiment is used, and as the heat insulation panel 96, the one having basically the same configuration as the above-described third embodiment is used. Is done. That is, the heat insulating panel 92 has a configuration in which spacers (not shown) are provided on the inner sides of two opposing main surfaces, and the inner side is in a reduced pressure or vacuum state. It is flat. Further, an engaging step 94 for connecting to the heat insulating panel 96 is formed on the edge portion 92A. On the other hand, the heat insulation panel 96 has a shape including a concave portion 96C in which a main surface 96A on the front side bulges and a substantially central portion of the main surface 96B on the back side is recessed along the longitudinal direction. Almost all of the main surfaces 96A and 96B have a shape bulging (or curved) in the same direction. The inside of such a heat insulating panel 96 is in a reduced pressure or vacuum state. Further, a groove 97 and a step 98 are formed between the main surfaces 96A and 96B for engaging and connecting with the step 94 of the heat insulating panel 92. The heat insulating panel 92 as described above is connected to the heat insulating panel 96 by inserting the edge portion 92 </ b> A into the groove 97 of the heat insulating panel 96 and engaging the steps 94 and 98. As described above, according to the present embodiment, it is possible to easily obtain a heat insulating structure having an arbitrary shape and size excellent in heat insulating properties and soundproofing properties by appropriately combining the heat insulating panels 92 and 96 and providing them at appropriate locations. This makes it easy to carry in, carry out, construct, and handle.

  Next, Embodiment 6 of the present invention will be described with reference to FIG. The present embodiment is an example in which a heat insulating panel having the same configuration as that of the above-described fourth embodiment is used as a heat insulating panel provided around the gas stove 108. As shown in FIG. 6 (A), the heat insulation panel 100 of the present embodiment is formed by the main surface 102 and the side surface 106, and the inner hollow portion thereof is the same as the spacer 80 of the above-described fourth embodiment. A spacer is provided by point contact (not shown) and is in a vacuum or reduced pressure state. The main surface 102 and the side surface 106 can be folded, and are erected around the gas stove 108 as shown in the drawing in a substantially L-shaped open state. As described above, when the heat insulation panel 100 is provided around the gas stove 108, the heat insulation effect can effectively reduce the temperature of the wall around the gas stove 108, and oil and juice can be taken from what is being cooked. It can also be prevented from splashing.

  Next, Embodiment 7 of the present invention will be described with reference to FIG. The heat insulation panel 110 of the present embodiment is an example provided around a pipe 114 that supplies hot water generated by a boiler 112 installed on a veranda or the like of an apartment to a bathroom or a sink. As shown in FIG. 6 (B), the heat insulation panel 110 of the present embodiment has a substantially cylindrical shape whose shape and dimensions are set in advance so as to match the shape of the pipe 114. It is the structure which was the same structure as a heat insulation panel, and was combining two things with a substantially semicircular cross section. When the heat insulation panel 110 is provided around the pipe 114, it is possible to prevent the temperature of the hot water generated in the boiler 112 from dropping due to the heat insulation effect while passing through the pipe 114, and the sound of the hot water flowing outside A soundproofing effect that suppresses leakage is also obtained. Further, the sound insulation effect of the heat insulation panel 110 may be utilized to be used for drain pipes and sewer pipes of apartments and apartment houses.

  Next, Embodiment 8 of the present invention will be described with reference to FIGS. 7 (A) and 7 (B). FIG. 7A is a plan view showing the whole of the present embodiment, and FIG. 7B is a cross-sectional view taken along line # C- # C and viewed in the direction of the arrow. In any of the above-described embodiments, the entire heat insulating panel has a curved shape, or is provided with a curved surface or a curved surface at almost the entire surface or substantially at the center. This is an example in which a plurality of curved surface portions are arranged across the surface.

  As shown in FIGS. 7A and 7B, the heat insulating panel 120 of the present embodiment is entirely rectangular, and the curved surface portion in which the two main surfaces 122 and 124 bulge (or bend) in the same direction. A flat portion 128 is continuously formed around 130. In the illustrated example, six curved surface portions 130 are formed in the flat surface portion 128 so as to be appropriately spaced. Such a heat insulating panel 120 is obtained by arranging two main surfaces 122 and 124 having substantially the same shape so as to face each other at a predetermined interval, sealing the periphery with an edge 126, and setting the hollow portion inside to a vacuum or a reduced pressure state. It is done. Further, in the heat insulating panel 120 of the present embodiment, a spacer 80 similar to that of the above-described fourth embodiment is attached to the inside of the flat portion 128 so that the top of the curved surface portion 82 is in point contact with the inside of the main surface. ing. The manufacturing method of the present embodiment is the same as that of the above-described embodiment, and may be assembled in an atmosphere set in advance in a reduced pressure or vacuum state, or the main surfaces 122 and 124 and the edge 126 are assembled under normal pressure. Later, the inside may be depressurized by appropriate means until a predetermined degree of vacuum is reached.

  As described above, according to this embodiment, since the plurality of curved surface portions 130 are formed on the main surfaces 122 and 124, the external pressure applied to the main surfaces is dispersed, and the shape of the heat insulating panel 120 can be maintained. it can. In addition, since the spacer 80 is provided by point contact inside the plane portion 128, the interval of the plane portion 128 can be maintained (shape maintenance), and the shape of the heat insulation panel 120 as a whole is not impaired. Other operations and effects are basically the same as those of the above-described embodiment.

  Next, Embodiment 9 of the present invention will be described with reference to FIG. FIG. 7C is a plan view showing the entirety of the present embodiment. The present embodiment is also an example in which a plurality of curved surface portions are provided in the same manner as the eighth embodiment described above. As shown in FIG. 7C, the heat insulating panel 150 of this embodiment has a configuration in which a plurality of curved surface portions 154 are arranged so as to be continuous with the flat surface portion 152. Although not shown, the heat insulation panel 150 of the present embodiment is also arranged in such a manner that two main surfaces having a shape that bulges or protrudes in the same direction are opposed to each other, and the periphery thereof is sealed with an edge, as in the above-described embodiment. The inner hollow portion is formed under reduced pressure or vacuum. The curved surface portion 154 is formed by arranging a plurality of curved surface shapes 154A to 154D in a substantially concentric manner like the heat insulation panel 30 of the second embodiment described above, and disperses the external pressure applied to the main surface. . In addition, a spacer 80 is provided inside the flat portion 152 by point contact, and the flat portion 152 is prevented from being deformed so as to be recessed by external pressure. The operation and effect of this embodiment are the same as those of the above-described embodiment.

  Next, a tenth embodiment of the present invention will be described with reference to FIG. FIG. 8A is a main cross-sectional view of the heat insulation panel of this embodiment, and FIG. 8B is a perspective view showing the structure of the spacer of this embodiment. FIG. 8A corresponds to a cross-sectional view of FIG. 8B cut along the line # D- # D and viewed in the direction of the arrow. FIGS. 8C and 8D are diagrams showing modifications of the spacer of this embodiment. In the above-described fourth, eighth, and ninth embodiments, the pair of spacers 80 are arranged opposite to each other at a plurality of positions between two main surfaces to make point contact. However, in this embodiment, one spacer is opposed to the main surface. This is an example in which point contact is made on both surfaces. As shown in FIG. 8A, a plurality of spacers 160 are provided between the two flat main surfaces 162 and 164 of the heat insulation panel 160 at appropriate intervals. The spacer 160 has a curved surface portion 168 whose substantially central portion bulges to one side, and the periphery thereof is a flat flat surface portion 170. The flat surface portion 170 is provided with a plurality of curved surface portions 172 bulging to the other side at appropriate intervals. In such a spacer 160, for example, the central curved surface portion 168 contacts one main surface 164 at one point, and the three curved surface portions 172 formed on the flat surface portion 170 are disposed on the other main surface 162 at three locations. Provided in point contact. Of course, the curved surface portion 168 may be provided so as to be in contact with the main surface 162, or the spacer 160 may be arranged in a different direction so as to be in contact with the main surface 162 and the main surface 164 alternately. The operations and effects of the present embodiment are the same as those of the fourth, eighth, and ninth embodiments described above. However, since one spacer can be point-contacted with both main surfaces 162 and 164 to maintain and reinforce, Assembly can be performed easily.

  Further, as in the spacer 174 shown in FIG. 8C, a plane portion is provided between the substantially central curved surface portion 176 that contacts one main surface and the curved surface portion 178 on the edge side that contacts the other main surface. Alternatively, the curved surface portions 176 and 178 may have a shape that is smoothly continuous. Alternatively, as in the spacer 180 shown in FIG. 8D, a plurality of (three in the illustrated example) are in contact with the other main surface at the edge of the substantially hemispherical curved surface portion 182 that is in contact with one main surface. The protruding portion 184 may be formed. The spacer 180 having such a shape is formed by, for example, applying a wave-shaped notch process to the edge of a hollow hemispherical body. Similar to the spacer 160, the spacers 174 and 180 are provided between two opposing main surfaces, and the same effects as in the fourth, eighth, and ninth embodiments can be obtained.

The present invention has many embodiments, and various modifications can be made based on the above disclosure. For example, the following are included.
(1) The material of the above-described embodiment is an example, and various known materials can be used as necessary. Similarly, the color, pattern, size, and shape can be changed as needed.

  (2) The shape, size, number of attachments, and arrangement of the spacers 80 shown in the fourth embodiment are also examples, and may be appropriately changed as necessary. For example, the cross-sectional shape of the curved surface portion 82 of the spacer 80, the ratio of the flat surface portion 84, and the like are appropriately changed. In the spacer 80, the flat portion 84 has a rectangular outer shape. However, like the spacer 86 shown in FIG. 4D, a circular flat portion 88 is provided around the curved portion 87 at the substantially central portion. However, the same effect can be obtained. The spacers 160, 174, and 180 shown in the tenth embodiment are also examples, and the shape, size, number of attachments, and arrangement may be changed as appropriate so as to achieve the same effect.

  (3) As shown in Examples 3 and 5 described above, the heat insulating panel of the present invention may be used in combination as a shape and size according to the purpose. Further, the combination is not limited to the above-described example, and any combination may be used as long as it is a heat insulating panel of the present invention.

  (4) The heat insulation panel of the present invention is not limited to the tile of Example 3 described above, the heat insulation panel of Example 6, and the heat insulation panel of Example 7, but requires heat insulation, sound insulation, sound insulation, prevention of condensation, etc. It may be applied to various uses such as buildings and interior materials. For example, the present invention can be applied to building wall materials (curtain walls, etc.), partitions, heat insulation panels for floors, refrigerated containers such as trucks, and the like. Moreover, you may make it utilize as a heat insulating material for a refrigerator, a freezer, a refrigerator / freezer warehouse.

According to the present invention, the hollow portions of the two main surfaces facing each other at a predetermined interval are set in a vacuum or a reduced pressure state, and (1) the entire main surface is curved in the same direction. (2) the main surface A plurality of curved surfaces bulging in the same direction are provided on substantially the entire surface or substantially in the center, and (3) a plurality of curved surfaces in which the two main surfaces are curved or bulged in the same direction are provided. A portion other than the portion is a flat flat portion, and preferably, the curved surface portion of the spacer is point-contacted inside the flat surface portion, or (4) the spacer having the curved surface portion inside the flat main surface is point-contacted Therefore, it is easy to maintain and manufacture the shape, and it can be applied as a heat insulating panel having excellent heat insulating effect and soundproofing effect. In particular, the use of a plurality of these heat insulation panels is suitable for the use of a heat insulation structure for increasing heating efficiency and cooling efficiency.

Claims (10)

A heat-insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is sealed and the inside is in a vacuum state or a reduced pressure state,
The heat insulation panel, wherein substantially the entire two main surfaces are curved in the same direction. A heat-insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is sealed and the inside is in a vacuum state or a reduced pressure state,
A plurality of curved surfaces bulging in the same direction are provided in substantially concentric circles so as to correspond to each other between the two main surfaces on substantially the entire surface or substantially central portion of the two main surfaces. Heat insulation panel. A heat-insulating panel in which the periphery of two main surfaces facing each other at a predetermined interval is sealed and the inside is in a vacuum state or a reduced pressure state,
A heat insulating panel characterized in that a plurality of curved surface portions in which the two main surfaces are curved or bulged in the same direction are provided, and a portion other than the curved surface portion is a flat flat surface portion.   The curved surface portion is formed by providing a plurality of curved surface shapes in which the two main surfaces bulge in the same direction in a substantially concentric shape so as to correspond to positions between the two main surfaces. The heat insulation panel according to claim 3.   5. The heat insulation panel according to claim 2, wherein a cross section of the curved shape is an arc shape or a corrugated shape.   A plurality of spacers having a curved surface portion with a substantially central portion bulging in one side and a flat surface portion formed around the curved surface portion are arranged at positions facing each other inside the flat surface portions of the two main surfaces. The thermal insulation panel according to claim 3 or 4, wherein the top portion of the curved surface portion of the spacer is brought into point contact with the inside of the main surface.   2. A plurality of spacers each having at least one curved surface portion or curved portion capable of making point contact on the inner side of both flat surfaces of the two main surfaces are provided between the two main surfaces. The heat insulation panel of 3 or 4. A heat insulating panel in which the periphery of two flat main surfaces facing each other at a predetermined interval is sealed and the inside is in a vacuum state or a reduced pressure state,
A plurality of spacers having a curved surface portion with a substantially central portion bulging in one side and a flat surface portion formed around the curved surface portion are disposed at positions facing the inner surfaces of the two main surfaces, and The heat insulation panel characterized by making the top part of a curved-surface part contact the inside of the said main surface. The periphery of two flat main surfaces corresponding to each other at a predetermined interval is hermetically sealed, and the inside is a heat insulating panel having a vacuum state or a reduced pressure state,
A heat insulating panel, wherein a plurality of spacers each having at least one curved surface portion or curved portion capable of making point contact are provided on both inner sides of the two main surfaces between the two main surfaces. A heat insulating structure using a plurality of the heat insulating panels according to claim 1.

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