JP5969370B2 - Thermal insulation panels and insulation - Google Patents

Description

  The present invention relates to a heat insulation panel that can be arranged in a predetermined arrangement and an arranged heat insulator.

  Patent Document 1 describes a heat insulating panel that can easily assemble a plurality of heat insulating panels. This heat insulation panel includes a first panel having a flange portion at the opening edge of the recess, and a flat plate-like second panel joined via the flange portion. A core material for improving heat insulation performance is disposed in the recess.

  When assembling each heat insulation panel to form one heat insulator, the first panel side and the second panel side are alternately arranged. While making the outer peripheral wall of the recessed part of another heat insulating panel contact the outer peripheral wall of the recessed part of a heat insulating panel, the peripheral part which protruded from the recessed part is overlapped with the closed surface of a recessed part.

  However, the heat insulator by the heat insulation panel of patent document 1 cannot suppress the heat radiation from the clearance gap between the recessed parts arrange | positioned adjacently. Therefore, further improvement for improving the heat insulation performance is necessary.

JP 2008-280707 A

  This invention makes it a subject to provide the heat insulation panel and heat insulating body which can be assembled | attached easily and have high heat insulation performance in the assembly | attachment state.

  In order to solve the above-mentioned problems, a heat insulating panel of the present invention includes a first panel member having a polygonal bulging portion, and a second panel that is joined to the first panel member and closes the opening side of the bulging portion. A projecting portion projecting outwardly on the opening side of the bulging portion, and a heat insulating panel formed by evacuating the heat insulating space in the bulging portion, the outer periphery of the bulging portion A superposition part is provided on the wall, and the superposition parts of the heat insulating panels arranged adjacent to each other are overlapped by alternately positioning the first panel member side and the second panel member side. The heat insulating body using the heat insulating panel is configured such that the protrusions of the heat insulating panels overlap the closed surfaces of the bulging portions by alternately positioning the first panel member side and the second panel member side. At the same time, the overlapping portions of the heat insulating panels are arranged in an overlapping manner.

  The heat insulation panels are arranged adjacent to each other so that the first panel member side and the second panel member side are alternately positioned, and the overlapping portions provided on the outer peripheral wall of the bulging portion of each heat insulation panel are overlapped. . Therefore, it can be assembled easily. The assembled heat insulator can secure the distance of heat conduction between adjacent heat insulation panels. Moreover, a heat insulating space is located over the entire surface between the heat insulating object and the atmosphere. Therefore, the heat insulation performance can be greatly improved.

  It is preferable to provide the 2nd superposition | polymerization part which overlaps with each said heat insulation panel arrange | positioned adjacent to each corner | angular part of the said bulging part of the said heat insulation panel. Specifically, the second overlapping portion includes a contact portion extending in the orthogonal direction from the second panel member side, and a chamfered portion chamfered from an upper end of the contact portion to an upper end corner of the bulging portion. And the abutting portion of each of the heat insulation panels can be inserted and arranged in the chamfered portion of the heat insulation panel. In addition, a corner chamfer is provided at each corner of the protrusion of the heat insulation panel so as to be flush with the second overlapping portion, and the corner chamfer of each heat insulation panel is brought into contact with the corner. Positioning is possible. Further, it is preferable that the heat insulating panel is filled with a heat insulating material which is formed at a corner of the bulging portion in a state where the heat insulating panels are arranged adjacent to each other. In this way, no gap is generated at the corners of the adjacent heat insulation panels, so that the heat insulation performance can be further improved.

  Further, the overlapping portion of the heat insulation panel includes an inclined portion that is inclined toward the closed surface of the bulging portion. Alternatively, the overlapping portion of the heat insulating panel includes a first contact portion that extends in a vertical direction toward the closing surface of the bulging portion, and a second contact portion that extends in parallel to the closing surface. Consists of parts. If it does in this way, the heat insulation panel arrange | positioned adjacently can be arrange | positioned reliably on the side part of a bulging part.

  It is preferable that a core material having a lower thermal conductivity than each panel member and incapable of elastic deformation is disposed in the heat insulating space. If it does in this way, generating of the curvature by heat can be prevented. Therefore, a large number of heat insulating panels can be easily and reliably joined together.

  The heat insulation panel of the present invention can be easily joined and assembled by the overlapping portion formed on the outer peripheral wall of the bulging portion. In addition, in the assembled state, it is possible to ensure the extended distance of the heat conduction, and since the heat insulating space is located over the entire surface of the heat insulating object, the heat insulating performance can be greatly improved.

The perspective view which shows the heat insulation panel of 1st Embodiment which concerns on this invention. (A) is a front view which shows the heat insulating body which assembled | attached many heat insulation panels, (B) is a cross-sectional view of (A). The front view which shows the state before an assembly | attachment. (A) is a side view showing a state before assembly, (B) is a side view showing a state after assembly. The perspective view which shows the heat insulation panel of 2nd Embodiment. The heat insulating body of 2nd Embodiment is shown, (A) is a front view, (B) is a side view. The perspective view which shows the heat insulation panel of 3rd Embodiment. The heat insulating body of 3rd Embodiment is shown, (A) is a front view, (B) is a side view. FIG. 9A is an enlarged view of a main part of FIG. 8A, and FIG. 9B is an enlarged view of a main part of FIG. The perspective view which shows the heat insulation panel of 4th Embodiment. The front view which shows the heat insulating body of 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows a heat insulation panel 10 according to the first embodiment of the present invention, and FIGS. 2 to 4 show a heat insulator using the heat insulation panel 10 of the first embodiment. The heat insulating panel 10 can be easily assembled without any gaps in a checkered pattern by providing the bulging portion 14 with the first and second overlapping portions 16 and 17 overlapping each other. The heat insulator improves the heat insulation performance by ensuring the extended distance of the heat conduction to the individual heat insulation panels 10.

  As shown in FIG. 1, the heat insulation panel 10 is provided with the 1st and 2nd panel members 11 and 20 which processed the stainless steel (SUS304 or SUS310S) board of thickness 0.1-1.0mm. A heat insulating space 21 is formed between them, and a core material 22 is disposed in the heat insulating space 21. The heat insulating space 21 is sealed after evacuating from the exhaust 15.

  The first panel member 11 has a square shape in plan view, and a bulging portion 14 having a square shape is formed at the center. By forming the bulging portion 14, a protruding portion 12 that protrudes outward is formed at the opening edge of the bulging portion 14. A corner chamfer 13 is provided at each corner of the protrusion 12. By forming the corner chamfered portion 13, the outer shape of the first panel member 11 has an octagonal shape in plan view. On the closed surface 14 a of the bulging portion 14, an exhaust portion 15 having a tip tube disposed in the exhaust hole is provided. The tip tube is sealed after evacuation.

  In the bulging portion 14, a first overlapping portion 16 is formed on the outer peripheral wall in four directions so as to be closely arranged so as to overlap another adjacent heat insulating panel 10, and a second overlapping having a stepped shape at each corner portion. A portion 17 is formed. The 1st superposition | polymerization part 16 is comprised by the inclination part inclined inward toward the closed surface 14a from the opening (protrusion part 12) side of the bulging part 14. FIG. The inclination angle of the first overlapping portion 16 of this embodiment is set to 45 degrees. The 2nd superposition | polymerization part 17 is provided with the contact part 18 extended in the orthogonal direction from the 2nd panel member 20 side (opening side of the bulging part 14). The contact portion 18 is formed in a triangular shape by the inclination of the first overlapping portion 16. The total height up to the top of the contact portion 18 is set to half the total height of the bulging portion 14. The contact portion 18 of the present embodiment is formed so as to be coplanar with the chamfered portion 13. The second overlapping portion 17 includes a chamfered portion 19 that is chamfered from the upper end of the abutting portion 18 to the upper end corner of the bulging portion 14. The chamfered portion 19 has a contact step portion 19a having a triangular shape in plan view extending from the top of the contact portion 18 in parallel to the protruding portion 12 and the closing surface 14a, and bulges from the inner end of the contact step portion 19a. And a triangular inclined portion 19b extending inclinedly toward the corner portion of the portion 14.

  The second panel member 20 is joined to the opening side of the bulging portion 14 of the first panel member 11 and closes the opening side of the bulging portion 14. In this embodiment, it is formed in the same octagonal shape as the external shape of the 1st panel member 11 (projection part 12) which provided the square chamfering part 13. As shown in FIG. In other words, each corner of the square flat plate is formed in an octagonal shape in which a corner chamfer similar to that of the first panel member 11 is provided.

  The first and second panel members 11 and 20 are integrated by disposing the second panel member 20 on the opening side of the bulging portion 14 and sealing the opening side of the protruding portion 12 and the contact portion 18. . Sealing is performed by pressure bonding such as seam welding, butt welding such as TIG welding, MIG brazing, or the like. The panel members 11 and 20 are not limited to stainless steel but may be metal plates such as iron and titanium, and can be changed according to the required heat-resistant temperature. In addition, different metal materials may be used for the first panel member 11 and the second panel member 20. Of course, it may be made of a resin as long as a heat-resistant temperature according to the purpose of use can be obtained.

  As shown in FIG. 2B, a heat insulating space 21 is formed in the bulging portion 14 by joining the first and second panel members 11 and 20. In this heat insulation space portion 21, a pair of core materials 22, 22, a metal foil (copper foil) 23 for preventing radiant heat transfer, and a gas generated after completion are sucked to maintain the degree of vacuum. Getters (not shown).

  The core material 22 is made of a thick ceramic board that is a porous body that has low thermal conductivity and cannot be elastically deformed (hard), and is formed into a shape that divides the overall height of the heat insulating space 21 into two vertically. Yes. A ceramic material made of fiber and cured as a desired shape, or a granular material fired as a desired shape can be used, and has a heat resistant temperature of about 1000 ° C. The core material 22 may be urethane, which is a plate-like porous body, instead of the ceramic board. Moreover, you may apply woven fabrics or nonwoven fabrics, such as glass fiber, a ceramic fiber, and a carbon fiber, and the material changes according to the heat-resistant temperature required.

  In this heat insulating panel 10, for example, the opening side of the first panel member 11 is disposed upward, the core material 22, the metal foil 23, and the getter are disposed, and then the first panel member 11 is disposed above. And the protrusion part 12 and the contact part 18 are joined to the 2nd panel member 20, and the circumference | surroundings of the bulging part 14 are sealed. Thereafter, an exhaust device (not shown) is connected to the exhaust unit 15 to evacuate the heat insulation space 21 to a predetermined degree of vacuum. When the specified degree of vacuum is reached and it is confirmed that there is no leakage, the heat insulating space 21 is sealed by sealing the exhaust part 15.

  When the heat insulating panel 10 is manufactured, the panel members 11 and 20 may be warped due to heat at the time of joining and evacuation. However, in the present embodiment, since the hard core material 22 is disposed inside the bulging portion 14, it is possible to prevent the occurrence of warpage due to heat. Moreover, the thickness of the core material 22 hardly changes before and after evacuation. As a result, the heat insulation panel 10 as designed can be manufactured accurately and reliably. In addition, productivity can be increased.

  Next, formation of a heat insulator using a large number of one type of heat insulating panel 10 will be described.

  As shown in FIGS. 2 (A) and 2 (B), the heat insulating panels 10 and 10 are adjacently arranged vertically and horizontally so that the first panel member 11 side and the second panel member 20 side are alternately positioned. Individual insulation is formed. Hereinafter, the thing which has arrange | positioned the bulging part 14 to upper side is set as the heat insulation panel 10A, and the thing which has arrange | positioned the bulging part 14 to the lower side is called heat insulation panel 10B.

  Specifically, it arrange | positions so that the 2nd panel member 20 of 10 A of heat insulation panels may contact the heat insulation target object X (for example, wall surface of a heating furnace), and the 1st panel member 11 side of the heat insulation panel 10B is the heat insulation target object X. Arrange them so that they are on the side. At this time, the protruding portions 12 and 12 of the heat insulating panels 10A and 10B are arranged so as to overlap the outer surfaces of the closed surfaces 14a and 14a of the bulged portions 14 and 14, respectively. Moreover, it arrange | positions so that the 1st superposition | polymerization parts 16 and 16 of each heat insulation panel 10A and 10B may contact and overlap. Thereby, the heat insulation panel 10A, 10B adjacently arranged can be positioned and arranged easily and accurately.

  In addition, the second overlapping portions 17 overlap each other at corners where the four heat insulating panels 10A, 10B, 10A, and 10B meet. Specifically, as shown in FIGS. 3 and 4 (A) and 4 (B), each of the chamfered portions 13 and 13 and the abutting portions of the heat insulating panels 10A and 10A and the heat insulating panels 10B and 10B positioned obliquely. 18 and 18 contact (surface contact). In addition, the contact step 19a of the chamfer 19 of the heat insulation panel 10A and the contact step 19a of the chamfer 19 of the heat insulation panel 10B located on the side contact (surface contact). Thereby, the contact part 18 of the heat insulation panel 10A is inserted and arranged in the chamfered parts 19 and 19 of the heat insulation panels 10B and 10B arranged adjacent to each other, and the contact part 18 of the heat insulation panel 10B is arranged adjacent to the heat insulation panel 10A. , 10A, the chamfered portions 19 and 19 are inserted and arranged. 3 and 4A are for clarifying the relationship between the second overlapping portions 17 and 17 of the heat insulating panels 10A and 10B, and are not in accordance with the actual assembling work.

  As described above, the protruding portions 12 of the heat insulating panels 10A and 10B are overlapped with the bulging portions 14 of the heat insulating panels 10B and 10A disposed adjacent to each other, and the angle chamfered portions of the heat insulating panels 10A and 10A and the heat insulating panels 10B and 10B located obliquely. 13 and 13 are brought into contact with each other. Accordingly, the first overlapping portions 16 and 16 of the heat insulating panels 10A and 10B disposed adjacent to each other and the second overlapping portions 17 and 17 of the heat insulating panels 10A and 10A and the heat insulating panels 10B and 10B disposed adjacent to each other obliquely are contacted. It can be easily positioned and arranged at the regular assembly position where the portions 18, 18 are in contact. And since the heat insulation panel 10 of this embodiment can prevent generation | occurrence | production of curvature at the time of manufacture, many heat insulation panels 10A and 10B can be joined together easily and reliably. Moreover, since the heat insulator of a predetermined area is formed only with one kind of heat insulation panel 10, workability | operativity can be improved significantly.

  Since the assembled heat insulator has a state in which the first overlapping portions 16 and 16 and the second overlapping portions 17 and 17 provided on the outer peripheral wall of the bulging portion U overlap each other, there is a gap between the heat insulating panels 10A and 10B. Will not occur. Moreover, since the 1st superposition | polymerization part 16 and 16 of heat insulation panel 10A, 10B makes the state extended diagonally, the extended surface distance of heat conduction is securable. Moreover, between the heat insulation object X and the atmosphere, the heat insulation space 21 (core material 22) is located over the entire surface. Therefore, since heat radiation from the entire periphery of the four sides and corners of the bulging portion 14 can be suppressed, the heat insulation performance can be greatly improved.

(Second Embodiment)
FIG. 5 shows the heat insulation panel 10 of 2nd Embodiment, FIG. 6 (A), (B) shows the heat insulation using the heat insulation panel 10 of 2nd Embodiment. The heat insulation panel 10 of 2nd Embodiment is different from 1st Embodiment by the point which comprised the 1st superposition | polymerization part 16 by the step-shaped step part.

  As shown in FIG. 5, the first overlapping portion 16 composed of stepped portions includes a first contact portion 16a, a second contact portion 16b extending in a direction orthogonal to the first contact portion 16a, and a second contact portion. And a third contact portion 16c extending in a direction orthogonal to the contact portion 16b. The first contact portion 16 a extends in the vertical direction from the protruding portion 12 toward the closing surface 14 a of the bulging portion 14, and is dimensioned to an overall height that is half of the overall height of the bulging portion 14. The second contact portion 16b extends in parallel to the protruding portion 12 and the closing surface 14a from the tip of the first contact portion 16a. The third contact portion 16c extends in the vertical direction from the inner end of the second contact portion 16b to the closing surface 14a, and is dimensioned to an overall height that is half of the overall height of the bulging portion 14. In the assembled state, the first contact portion 16a contacts the third contact portion 16c of the other heat insulation panel 10, and the second contact portion 16b contacts the second contact portion 16b of the other heat insulation panel 10. .

  The 2nd superposition | polymerization part 17 of 2nd Embodiment is provided with the contact part 18 extended in the orthogonal direction from the 2nd panel member 20 side. The contact portion 18 is formed in a rectangular shape by forming the first contact portion 16 a of the first overlapping portion 16. The chamfered portion 19 includes a contact step portion 19a that is positioned in a plane with respect to the second contact portion 16b. In addition, the inclined part 19b shown in 1st Embodiment is not provided by formation of the 3rd contact part 16c extended in a perpendicular direction.

  The heat insulation panel 10 of 2nd Embodiment is manufactured similarly to 1st Embodiment, and as shown to FIG. 6 (A) and (B), it can assemble | attach similarly to 1st Embodiment and can form a heat insulating body. And the effect | action and effect similar to 1st Embodiment can be acquired. Moreover, in the second embodiment, since the first and second overlapping portions 16 and 17 are formed in a step shape, it is possible to reliably prevent a gap from being generated at the corner portions of the heat insulating panels 10A and 10B. Therefore, the heat insulation performance can be further improved.

  In the first and second embodiments, the contact portion 18 of the second overlapping portion 17 is formed in the same plane with respect to the corner chamfering portion 13. If the sealing performance cannot be ensured, the protruding portion 12 may be formed. If it does in this way, the heat insulation space part 21 can be sealed reliably.

(Third embodiment)
FIG. 7 shows a heat insulation panel 10 according to the third embodiment, and FIGS. 8A and 8B show a heat insulator using the heat insulation panel 10 according to the third embodiment. As shown in FIG. 7, the heat insulating panel 10 according to the third embodiment has an inclined chamfered portion 19 that does not overlap with other heat insulating panels 10 at the corners of the bulging portion 14 instead of the second overlapping portion 17. This is different from the first embodiment. Moreover, in 3rd Embodiment, the protrusion part 12a is formed also in the outer peripheral part of the chamfering part 19, and the semicircle-shaped bolt insertion part 24 for fixing to this protrusion part 12a (edge of the square chamfering part 13) is provided. Forming.

  The heat insulation panel 10 of 3rd Embodiment is manufactured similarly to 1st Embodiment, and as shown to FIG. 8 (A) and (B), it can assemble | attach similarly to 1st Embodiment and can form a heat insulating body. Further, in the third embodiment, as shown in FIG. 9A, the semi-circular bolt insertion portions 24, 24 are formed in the corner chamfered portions 13, 13 that are in contact in the assembled state. The heat insulation panels 10A and 10B can be fixed to the heat insulation object X through the bolts 25A and 25B through the bolt insertion part 24.

  Specifically, as shown in FIG. 9B, a bolt 25 </ b> A is attached to the heat insulation object X, and the bolt 25 </ b> A and a separate bolt 25 </ b> B are connected by a connector 26. The connector 26 is a hollow case made of a material having low thermal conductivity, and can connect the bolts 25A and 25B in a non-contact state. The connector 26 is disposed in a gap 27 formed at a corner where the four heat insulating panels 10A, 10B, 10A, and 10B meet. That is, in the heat insulation panel 10 of the present embodiment, since the second overlapping portion 17 is configured by an inclined portion, the void portion 27 having a substantially rhombus shape is formed at the corner portion in the assembled state. In the gap portion 27, a heat insulating material 28 is filled around the connector 26. Ceramic fiber that can be elastically deformed is applicable to the heat insulating material 28. Glass fibers or carbon fibers may be used instead of ceramic fibers.

  In this way, the heat insulating panels 10 </ b> A and 10 </ b> B attached to the heat insulating object X can prevent heat dissipation from the gap portion 27 by the heat insulating material 28. In addition, since the separate bolts 25A and 25B are connected in a non-contact state by the connector 26, heat dissipation using the bolts 25A and 25B as a medium can be prevented. Therefore, it can prevent that heat insulation performance falls.

(Fourth embodiment)
FIG. 10 shows the heat insulation panel 10 of 4th Embodiment, FIG. 11 shows the heat insulation using the heat insulation panel 10 of 4th Embodiment. As shown in FIG. 10, the heat insulation panel 10 of 4th Embodiment is the 1st and 2nd panel members 11 and 20 by the point which formed the convex parts 29 and 30 for reducing a heat-transfer area. It is different from the embodiment.

  The first panel member 11 is formed with a convex portion 29 projecting in an annular shape on the closing surface 14a of the bulging portion 14 by pressing. Further, the corners of the closing surface 14a are convex portions 29a protruding in a substantially right triangle shape. The second panel member 20 is formed with a convex portion 30 projecting in an annular shape in a region located in the projecting portion 12. Thereby, the area | region in which the convex parts 29 and 30 are not formed comprises the recessed part which cannot contact other members, such as the heat insulation target object X. FIG.

  The heat insulation panel 10 of 4th Embodiment is manufactured similarly to 1st Embodiment, and as shown in FIG. 11, it can assemble | attach similarly to 1st Embodiment and can form a heat insulating body. Moreover, in 4th Embodiment, since the convex parts 29 and 30 are provided in the 1st and 2nd panel members 11 and 20, the contact area with the heat insulation target object X is reduced, and the heat radiation by heat transfer is further reduced. it can. Therefore, the heat insulation performance can be further improved. And since the convex parts 29 and 30 make the role of the reinforcement part for preventing the deformation | transformation of the heat insulation panel 10, the rigidity of the heat insulation panel 10 and a heat insulating body can be improved.

  In addition, the heat insulation panel 10 of this invention is not limited to the structure of the said embodiment, A various change is possible.

  For example, you may form the bolt insertion part 24 shown in 3rd Embodiment in the heat insulation panel 10 of 1st, 2nd and 4th embodiment. In this case, it is preferable that the bolt insertion portion 24 formed in the contact portion 18 is configured by a concave groove that is recessed in a semi-cylindrical shape. Moreover, since the 2nd superposition | polymerization part 17 of 1st Embodiment forms a slight space | gap in the assembly | attachment state, you may fill the space | interval with the heat insulating material 28 similarly to 3rd Embodiment. Furthermore, you may provide the convex parts 29 and 30 shown in 4th Embodiment in the heat insulation panel 10 of 1st to 3rd embodiment. Moreover, the convex portions 29 and 30 are not limited to an annular shape, and can be formed in a desired shape and arrangement. And in the said embodiment, although the bulging part 14 was bulged in planar view square shape, if it is a polygon more than a triangle, it can change as desired. Moreover, the superposition | polymerization parts 16 and 17 are not restricted to an inclination part or a step-like step part, What is necessary is just the shape which mutually overlaps with the superposition | polymerization parts 16 and 17 of the other heat insulation panel 10 arrange | positioned adjacently.

DESCRIPTION OF SYMBOLS 10, 10A, 10B ... Thermal insulation panel 11 ... 1st panel member 12 ... Protrusion part 12a ... Protrusion part 13 ... Square chamfering part 14 ... Expansion part 14a ... Closure surface 15 ... Exhaust part 16 ... 1st superposition | polymerization part 16a ... 1st DESCRIPTION OF SYMBOLS 1 Contact part 16b ... 2nd contact part 16c ... 3rd contact part 17 ... 2nd superposition | polymerization part 18 ... Contact part 19 ... Chamfering part 19a ... Contact step part 19b ... Inclination part 20 ... 2nd panel member DESCRIPTION OF SYMBOLS 21 ... Thermal insulation space part 22 ... Core material 23 ... Metal foil 24 ... Bolt insertion part 25A, 25B ... Bolt 26 ... Connection tool 27 ... Space | gap part 28 ... Thermal insulation material 29, 29a ... Convex part 30 ... Convex part X ... Thermal insulation object

Claims (9)

A first panel member having a polygonal bulging portion; and a second panel member joined to the first panel member and closing the opening side of the bulging portion, and is provided on the opening side of the bulging portion. In the heat insulating panel in which the protruding portion protruding in the direction is formed and the heat insulating space in the bulging portion is a vacuum,
An overlapping portion is provided on the outer peripheral wall of the bulging portion, and the overlapping portions of the heat insulating panels arranged adjacent to each other are overlapped by alternately positioning the first panel member side and the second panel member side. Insulation panel characterized by that. A first panel member having a polygonal bulging portion; and a second panel member joined to the first panel member and closing the opening side of the bulging portion, and is provided on the opening side of the bulging portion. A protruding portion protruding in the direction is formed, and the heat insulating space portion in the bulging portion is composed of two or more heat insulating panels that are vacuum , and an overlapping portion is provided on the outer peripheral wall of the bulging portion of each heat insulating panel, By alternately positioning the first panel member side and the second panel member side, the protrusions of the heat insulation panels overlap the closed surfaces of the bulges, and the polymerization of the heat insulation panels. A heat insulator characterized in that the parts are arranged in an overlapping manner.   The heat insulating body according to claim 2, wherein a second overlapping portion is provided at each corner portion of the bulging portion of the heat insulating panel so as to overlap the heat insulating panels arranged adjacent to each other.   The second overlapping portion has a contact portion extending in the orthogonal direction from the second panel member side, and a chamfered portion chamfered from an upper end of the contact portion to an upper end corner of the bulging portion, The heat insulator according to claim 3, wherein the abutting portion of each heat insulating panel can be inserted and disposed in the chamfered portion of the heat insulating panel adjacently disposed.   At each corner of the protrusion of the heat insulation panel, a corner chamfer is provided so as to be flush with the second overlapping portion, and the corner chamfer of each heat insulation panel is brought into contact with and positioned. The heat insulator according to claim 3 or 4, wherein the heat insulator is made possible. Any one of claims 2 to 5, wherein said heat insulating material in the gap portion that will be formed at the corner portion of the bulged portion in a state in which each insulation panel adjacent arrangement is arranged to fill The insulator according to 1.   The heat insulating body according to any one of claims 2 to 6, wherein the overlapping portion of the heat insulating panel includes an inclined portion inclined toward a closing surface of the bulging portion.   The overlapping portion of the heat insulation panel includes a first contact portion that extends in a vertical direction toward the closed surface of the bulge portion, and a step portion that includes a second contact portion that extends parallel to the closed surface. The heat insulator according to any one of claims 2 to 6, wherein the heat insulator is provided.   9. The core material according to claim 2, wherein a core material having lower thermal conductivity than each panel member and incapable of elastic deformation is disposed in the heat insulating space. Insulation.

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