Box wall structure and container
Patent Information
- Application Number
- CN202522609468.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-09
AI Technical Summary
然而,岩棉彩钢板的防火性能有限,难以满足用户对防火安全日益提升的要求,尤其是对维持更长时间的耐火极限的典型需求
[0016]根据本实用新型第二方面的集装箱,通过应用上述的箱壁结构,能提高集装箱整体的保温和隔热效果,从而有利于实现集装箱维持更长时间的耐火极限的目的,进而满足用户对防火安全日益提升的要求。
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Figure CN224899710U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates generally to the technical field of containers, and more specifically to a container wall structure and a container. Background Technology
[0002] Energy storage containers and other containers using related technologies typically employ a process of installing rock wool corrugated steel panels inside the container to meet fire resistance requirements. However, the fire resistance of rock wool corrugated steel panels is limited and cannot meet users' increasingly stringent requirements for fire safety, especially the typical need to maintain a longer fire resistance limit.
[0003] Therefore, there is a need to provide a container wall structure and a container to at least partially solve the above problems. Utility Model Content
[0004] The present invention includes a series of simplified concepts, which will be further explained in detail in the detailed description section. This present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0005] To at least partially solve the above problems, the first aspect of this utility model provides a box wall structure, the box wall structure comprising: First panel layer; A connector, the connector being located on one side of the first panel layer along a first direction and fixed to the first panel layer; A thermal insulation layer is located on the side of the connector facing away from the first panel layer along the first direction. A second panel layer, the second panel layer being located on the side of the thermal insulation layer opposite to the first panel layer along the first direction; and Fasteners are securely connected to the second panel layer and the connector, and extend through the thermal insulation layer.
[0006] According to the first aspect of the box wall structure of this utility model, by setting a thermal insulation layer between the first panel layer and the second panel layer, the formation of thermal bridges between the first panel layer and the second panel layer can be prevented. By setting a connector between the first panel layer and the thermal insulation layer, and fastening the connecting part of the connector to the second panel layer with fasteners, the thermal insulation layer is sandwiched between the connector and the second panel layer. Therefore, heat conduction between the first panel layer and the second panel layer can be effectively reduced, further preventing the formation of thermal bridges. Compared with directly connecting the second panel layer to the first panel layer, the thermal insulation effect of the box wall structure can be improved, which is conducive to maintaining the fire resistance limit of the box wall structure for a longer period of time, thereby meeting the increasingly demanding fire safety requirements of users.
[0007] Optionally, the fasteners connected to the second panel layer and the connector are spaced apart from the first panel layer.
[0008] Optionally, a first cavity is formed between the thermal insulation layer and the first panel layer; The box wall structure also includes a first heat insulation filler, which fills the first cavity and is constructed using a heat insulation material.
[0009] Optionally, the first panel layer includes a corrugated metal plate, and the surface of the first panel layer facing the thermal insulation layer includes a crest portion, a trough portion, and a transition portion. The crest portions and the trough portions are arranged alternately, and the crest portions are connected to adjacent trough portions through the transition portions. The connector is positioned corresponding to and spaced apart from the trough portions along the first direction, and the connector is connected to adjacent transition portions. The first cavity is formed between the connector, the transition portions, and the trough portions.
[0010] Optionally, the connector is configured as a connecting plate, and along the first direction, the projection of the connecting plate covers the projection of the trough.
[0011] Optionally, along the first direction, the thermal insulation layer abuts against the crest portion, and the connector is spaced apart from the thermal insulation layer to form a second cavity; The box wall structure also includes a second heat insulation filler, which is located in the second cavity. Along the first direction, the second heat insulation filler abuts against the connector and the heat insulation layer. The first heat insulation filler is constructed with a structure made of heat insulation material.
[0012] Optionally, the first panel layer includes a planar metal plate.
[0013] Optionally, the connector extends along a second direction, and there are multiple connectors arranged at intervals along a third direction. Any two of the second direction, the third direction, and the first direction are perpendicular to each other. The first cavity is located between every two adjacent connectors; and / or The first panel layer also includes a frame, which is located on the side of the planar metal plate facing the second panel layer. The frame is disposed around the periphery of the planar metal plate. A portion of the thermal insulation layer is located between the frame and the second panel layer. The second panel layer is connected to the frame by the fasteners.
[0014] Optionally, the second panel layer is made of a flat metal sheet; and / or The fastener is a self-tapping screw; and / or The thermal conductivity of the insulation layer is less than or equal to 0.04 W / (mk).
[0015] The second aspect of this utility model provides a container, the container including a wall assembly, a door assembly, a top panel assembly, and a bottom assembly, any one of the wall assembly, door assembly, top panel assembly, and bottom assembly being configured as or including the aforementioned container wall structure.
[0016] According to the second aspect of this utility model, by applying the above-mentioned container wall structure, the overall heat preservation and insulation effect of the container can be improved, thereby helping to achieve the purpose of maintaining the fire resistance limit of the container for a longer period of time, and thus meeting the increasingly higher requirements of users for fire safety. Attached Figure Description
[0017] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings, Figure 1 This is a structural schematic diagram of a container according to one embodiment of the present invention; Figure 2 This is a front view of the box wall structure according to the first embodiment of the present utility model; Figure 3 For along Figure 2 The sectional view cut by line AA in the middle; Figure 4 For along Figure 2 The sectional view cut by line BB in the middle; Figure 5 for Figure 2 The exploded perspective view of the box wall structure shown; Figure 6 This is a front view of the box wall structure according to the second embodiment of the present invention; Figure 7 For along Figure 6 The sectional view cut by line CC in the middle; Figure 8 for Figure 6 The exploded perspective view of the box wall structure shown; Figure 9 A schematic diagram of the structure of a top plate assembly according to one embodiment of the present invention; and Figure 10 This is a structural schematic diagram of a box bottom assembly according to one embodiment of the present invention.
[0018] Explanation of reference numerals in the attached figures: 100: Box wall structure 100b: Second chamber 101: First panel layer 101a: Crest section 101b: Valley 101c: Transition Section 101d: Border 102: Connector 103: Thermal insulation layer 104: Second panel layer 106: First thermal insulation filler 108: Second thermal insulation filler 109: Fasteners 110: Container 111: Wall Components 111a: End wall 111b: Side wall 112: Cabinet door assembly 113: Top plate assembly 114: Box bottom assembly 200: Box wall structure 201: First panel layer 201d: Border 202: Connector 203: Thermal insulation layer 204: Second panel layer 206: First thermal insulation filler 209: Fasteners D1: First Direction D2: Second Direction D3: Third direction Detailed Implementation
[0019] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.
[0020] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.
[0021] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.
[0022] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.
[0023] The terms “center,” “parallel,” “perpendicular,” “aligned,” and “symmetrical” used in this invention do not have to be precise, but can include typical engineering tolerances.
[0024] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.
[0025] This utility model provides a container wall structure 100 and a container 110 having the same. Here, the container 110 refers to a container 110 requiring insulation and fireproofing, such as an energy storage container 110. See below for further details. Figures 1 to 10 The examples shown provide a detailed description of the container wall structure 200 and the container 110 having therein according to the present invention.
[0026] First Implementation Method See Figures 2 to 5 The first embodiment of this utility model provides a box wall structure 100. The box wall structure 100 includes a first panel layer 101, a connector 102, a thermal insulation layer 103, a second panel layer 104, and fasteners 109. The connector 102 is located on one side of the first panel layer 101 along a first direction D1 and is fixed to the first panel layer 101. The thermal insulation layer 103 is located on the side of the connector 102 along the first direction D1 away from the first panel layer 101. The second panel layer 104 is located on the side of the thermal insulation layer 103 along the first direction D1 away from the first panel layer 101. The fasteners 109 are fastened to the second panel layer 104 and the connector 102 and penetrate the thermal insulation layer 103.
[0027] According to the box wall structure 100 of this utility model, by providing a thermal insulation layer 103 between the first panel layer 101 and the second panel layer 104, the formation of thermal bridges between the first panel layer 101 and the second panel layer 104 can be prevented. By providing a connector 102 between the first panel layer 101 and the thermal insulation layer 103, and fastening the connecting part of the connector 102 to the second panel layer 104 with fasteners 109, the thermal insulation layer 103 is sandwiched between the connector 102 and the second panel layer 104. Therefore, the heat conduction between the first panel layer 101 and the second panel layer 104 can be effectively reduced, further preventing the formation of thermal bridges. Compared with directly connecting the second panel layer 104 to the first panel layer 101, the thermal insulation effect of the box wall structure 100 can be improved, which is conducive to maintaining the fire resistance limit of the box wall structure 100 for a longer period of time, thereby meeting the increasingly demanding requirements of users for fire safety.
[0028] The first panel layer 101, the thermal insulation layer 103, and the second panel layer 104 mentioned above are all plate-shaped structures. The first direction D1 is the overall thickness direction of each of the first panel layer 101, the thermal insulation layer 103, and the second panel layer 104.
[0029] See Figure 3 In some embodiments, the fasteners 109 connected to the second panel layer 104 and the connector 102 are spaced apart from the first panel layer 101. By spaced apart from the first panel layer 101, thermal bridges between the fasteners 109 and the first panel layer 101 can be further prevented, thereby improving fire resistance and thermal insulation performance.
[0030] See Figure 3 and Figure 5 In some embodiments, a first cavity is formed between the thermal insulation layer 103 and the first panel layer 101. The box wall structure 100 also includes a first thermal insulation filler 106. The first thermal insulation filler 106 fills the first cavity. The first thermal insulation filler 106 is constructed using a thermal insulation material. By providing the first cavity and filling it with the first thermal insulation filler 106, the effect of blocking the thermal bridge between the first panel layer 101 and the second panel layer 104 can be further enhanced, thereby improving fire resistance and thermal insulation performance.
[0031] Optionally, the first thermal insulation filler 106 may be made of thermal insulation materials such as rock wool.
[0032] See Figure 5In some embodiments, the first panel layer 101 includes a corrugated metal plate. The surface of the first panel layer 101 facing the thermal insulation layer 103 includes crests 101a, troughs 101b, and transition portions 101c. The crests 101a and troughs 101b are arranged alternately. A crest 101a is connected to an adjacent trough 101b via a transition portion 101c. A connector 102 is positioned corresponding to and spaced apart from the troughs 101b along a first direction D1. The connector 102 is connected to an adjacent transition portion 101c. A first cavity is formed between the connector 102, the transition portion 101c, and the troughs 101b. On the surface of the first panel layer 101 facing away from the thermal insulation layer 103, the portion corresponding to the trough 101b is raised, while the portion corresponding to the crest 101a is recessed. Compared to the fire resistance of the crest 101a of the box wall structure 100, the fire resistance of the trough 101b of the box wall structure 100 is given priority because it is easier for external objects or people to feel the heat of the box wall structure 100 here. By providing a first cavity in the trough 101b and filling it with a first heat-insulating filler 106, heat conduction between the second panel layer 104 and the trough 101b of the first panel layer 101 can be blocked, further improving the fire resistance and heat insulation effect of the trough 101b of the box wall structure 100.
[0033] Optionally, the corrugated metal sheet is a stainless steel corrugated sheet. The stainless steel corrugated sheet can be made by splicing multiple stainless steel corrugated sheets together, and the splicing methods include, but are not limited to, welding and riveting.
[0034] See Figure 5 Optionally, the first panel layer 101 further includes a frame 101d. The frame 101d surrounds the periphery of the corrugated metal sheet. The frame 101d is located on the side of the corrugated metal sheet facing the second panel layer 104. A thermal insulation layer 103 is located between the frame 101d and the second panel layer 104. The second panel layer 104 is also connected to the frame 101d by fasteners 109.
[0035] See Figure 3 and Figure 5 Optionally, the connector 102 is configured as a connecting plate. Along the first direction D1, the projection of the connecting plate overlaps the projection of the trough portion 101b. This helps to define the first cavity as a cross-sectionally closed chamber, thereby preventing the filler filling the first cavity from dispersing or leaking.
[0036] See Figure 3In some embodiments, along the thickness direction, the thermal insulation layer 103 abuts against the crest portion 101a, and the connector 102 is spaced apart from the thermal insulation layer 103 to form a second cavity 100b. The box wall structure 100 also includes a second thermal insulation filler 108. The second thermal insulation filler 108 is located in the second cavity 100b. Along the first direction D1, the second thermal insulation filler 108 abuts against the connector 102 and the thermal insulation layer 103. The first thermal insulation filler 106 is configured to be made of thermal insulation material. By arranging the thermal insulation layer 103 abutting against the crest portion 101a, the structural compactness of the box wall structure 100 in the first direction D1 can be improved, thereby helping to reduce the compression of the internal space. By providing the second thermal insulation filler 108 in the second cavity 100b, the fire resistance and thermal insulation performance of the box wall structure 100 corresponding to the trough portion 101b can be further improved. By arranging the second thermal insulation filler 108 in contact with the connector 102 and the thermal insulation layer 103 respectively, the structural compactness of the box wall structure 100 along the first direction D1 at the trough can be improved.
[0037] Optionally, the second insulating filler 108 is made of a nano-fireproof board with a thermal conductivity of no more than 0.04 W / (mk). This ensures effective insulation and extends the fire resistance time.
[0038] See Figures 2 to 5 In some embodiments, the second panel layer 104 is made of a planar metal plate. By making the second panel layer 104 of a planar metal plate, it is possible to increase the surface rigidity and strength of the box wall structure 100 while reducing the space occupied in the first direction D1.
[0039] Optionally, the flat metal sheet is a flat stainless steel sheet. The flat stainless steel sheet can be composed of multiple stainless steel sheets joined together, and the joining methods include, but are not limited to, welding and riveting.
[0040] See Figures 3 to 5 In some embodiments, the fastener 109 is a self-tapping screw. By setting the fastener 109 as a self-tapping screw, it is easier to quickly install by self-tapping. Compared with methods such as welding, this not only reduces the formation of thermal bridges but also improves assembly efficiency.
[0041] Optionally, the thermal conductivity of the insulation layer 103 is less than or equal to 0.04 W / (mk). Compared with refractory insulation materials such as rock wool, it can effectively reduce heat transfer efficiency, thereby extending the time to reach the fire resistance limit and improving fire resistance performance.
[0042] According to one embodiment of the box wall panel structure of this utility model, its manufacturing method may include: firstly, adding a 10mm fire-resistant nano-board as a second heat insulation filler 108 to the inner side of the corrugated plate serving as the first panel layer 101. Then, laying a 20mm thick fire-resistant nano-board as a thermal insulation layer 103 on the side of the second heat insulation filler 108 facing away from the first panel layer 101. Afterwards, laying a 1.6mm flat steel plate as a second panel layer 104 on the side of the thermal insulation layer 103 facing away from the first panel layer 101. The second panel layer 104 is fixed to the corrugated plate together with the thermal insulation layer 103 and the second heat insulation filler layer using 4.8x38mm self-tapping screws. Since the fire-resistant nano-board itself has good thermal insulation properties and a thermal conductivity coefficient of 0.03W / (mk), current production practice shows that the fire resistance time can reach 2 hours or more. This screw connection structure reduces or avoids welding points between the first panel layer 101 and the second panel layer 104, preventing the formation of thermal bridges and effectively reducing heat conduction between the second panel layer 104, the thermal insulation layer 103, and the first panel layer 101. The thermal insulation layer 103 completely isolates the main steel of the container wall structure 100, thereby minimizing thermal bridging. When applied to a container 110, the container wall structure 100 of this invention helps to maximize the insulation of the internal steel of the container 110 by the thermal insulation layer 103. When the internal temperature of the container rises or a high-temperature flame appears, it is not easy or possible for heat to be directly transferred to the outside of the container 110 through the steel, achieving excellent fireproof separation and thermal insulation effects.
[0043] According to the container wall structure 100 of this utility model, when applied to the container 110, it helps to improve the overall fire resistance time of the container 110 and solves the problem of poor overall thermal insulation of the container 110. The structure of this utility model is simple and practical, which helps to ensure the thermal insulation requirements and economy of the container 110.
[0044] Second Implementation Method Figures 6 to 8 The box wall structure 200 of the second embodiment of this utility model is schematically shown. The differences between the box wall structure 200 of the second embodiment and the box wall structure 100 of the first embodiment are described below; the parts that are the same as those in the first embodiment will not be repeated. In the box wall structure 200 of the second embodiment of this utility model, the first panel layer 201 includes a planar metal plate. Using a planar metal plate reduces the dimension of the box wall structure 200 along the first direction D1.
[0045] See Figure 7 and Figure 8 Optionally, the flat metal plate is a flat stainless steel plate. The flat stainless steel plate can be composed of multiple stainless steel plates spliced together, and the splicing methods include, but are not limited to, welding and riveting.
[0046] See Figure 8 Optionally, the first panel layer 201 further includes a frame 201d. The frame 201d surrounds the periphery of the planar metal plate. The frame 201d is located on the side of the planar metal plate facing the second panel layer 204. A thermal insulation layer 203 is located between the frame 201d and the second panel layer 204. The second panel layer 204 is also connected to the frame 201d by fasteners 209.
[0047] See Figure 7 and Figure 8 Optionally, the connector 202 extends along the second direction D2. There are multiple connectors 202. These multiple connectors 202 are arranged at intervals along the third direction D3. Any two of the second direction D2, the third direction D3, and the first direction D1 are perpendicular. The first cavity is located between every two adjacent connectors. Here, the connector 202 acts as a support beam or reinforcing beam, fulfilling the connection function while simultaneously strengthening the structural strength of the first panel layer 201.
[0048] See Figures 1 to 10 An embodiment of this utility model provides a container 110. The container 110 includes a wall assembly 111, a door assembly 112, a top assembly 113, and a bottom assembly 114. Any one of the wall assembly 111, the door assembly 112, the top assembly 113, and the bottom assembly 114 constitutes or includes the aforementioned container wall structure 100.
[0049] According to the embodiments of the present invention, the container 110, by applying the above-mentioned container wall structure 100, can improve the overall heat insulation and heat insulation effect of the container 110, thereby helping to achieve the purpose of maintaining the fire resistance limit of the container 110 for a longer period of time, and thus meeting the increasingly higher requirements of users for fire safety.
[0050] The wall assembly 111 includes a side wall 111b and an end wall 111a. In applications where the outer side panels of the side walls 111b and end walls 111a are corrugated, the side walls 111b and end walls 111a employ the container wall structure 100 of the first embodiment described above. In applications where the outer side panels of the side walls 111b and end walls 111a are flat, the side walls 111b and end walls 111a employ the container wall structure 200 of the second embodiment described above. Taking the illustrated container 110 as an example, the side wall 111b employs the container wall structure 200 of the second embodiment described above. The top assembly 113 includes the container wall structure 100 of the first embodiment described above. A door assembly 112 is provided at the side wall 111b. Each door in the door assembly 112 employs the same or substantially the same container wall structure 200 as the side wall 111b. Figure 9 As shown, the top plate assembly 113 includes the box wall structure 200 of the second embodiment described above, and the box wall structure 200 is located on the side of the top plate assembly 113 facing the internal space of the box. Figure 10 As shown, the box bottom assembly 114 can also be referred to as a box bottom structure or a base frame. The base frame includes the box wall structure 200 of the second embodiment described above. The bottom crossbeam of the base frame corresponds to the connector 202 of the box wall structure 200 of the second embodiment. The floor of the base frame corresponds to the first panel layer 201 of the box wall structure 200 of the second embodiment. The sealing plate below the bottom crossbeam of the base frame corresponds to the second panel layer 204 of the box wall structure 200 of the second embodiment.
[0051] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.
[0052] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.
Claims
1. A box wall structure, characterized in that, The box wall structure includes: First panel layer; A connector, the connector being located on one side of the first panel layer along a first direction and fixed to the first panel layer; A thermal insulation layer is located on the side of the connector facing away from the first panel layer along the first direction. A second panel layer, the second panel layer being located on the side of the thermal insulation layer opposite to the first panel layer along the first direction; and Fasteners are securely connected to the second panel layer and the connector, and extend through the thermal insulation layer.
2. The box wall structure according to claim 1, characterized in that, The fasteners connected to the second panel layer and the connector are spaced apart from the first panel layer.
3. The box wall structure according to claim 1 or 2, characterized in that, A first cavity is formed between the thermal insulation layer and the first panel layer; The box wall structure also includes a first heat insulation filler, which fills the first cavity and is constructed using a heat insulation material.
4. The box wall structure according to claim 3, characterized in that, The first panel layer includes a corrugated metal plate. The surface of the first panel layer facing the thermal insulation layer includes a crest portion, a trough portion, and a transition portion. The crest portions and the trough portions are arranged alternately. The crest portions are connected to adjacent trough portions through the transition portions. The connector is positioned corresponding to and spaced apart from the trough portions along the first direction. The connector is connected to adjacent transition portions. The first cavity is formed between the connector, the transition portions, and the trough portions.
5. The box wall structure according to claim 4, characterized in that, The connector is configured as a connecting plate, and along the first direction, the projection of the connecting plate covers the projection of the trough.
6. The box wall structure according to claim 4, characterized in that, Along the first direction, the thermal insulation layer abuts against the crest portion, and the connector is spaced apart from the thermal insulation layer to form a second cavity; The box wall structure also includes a second heat insulation filler, which is located in the second cavity. Along the first direction, the second heat insulation filler abuts against the connector and the heat insulation layer. The first heat insulation filler is constructed with a structure made of heat insulation material.
7. The box wall structure according to claim 3, characterized in that, The first panel layer comprises a planar metal plate.
8. The box wall structure according to claim 7, characterized in that, The connector extends along a second direction, and there are multiple connectors arranged at intervals along a third direction. Any two of the second direction, the third direction, and the first direction are perpendicular to each other. The first cavity is located between every two adjacent connectors; and / or The first panel layer also includes a frame, which is located on the side of the planar metal plate facing the second panel layer. The frame is disposed around the periphery of the planar metal plate. A portion of the thermal insulation layer is located between the frame and the second panel layer. The second panel layer is connected to the frame by the fasteners.
9. The box wall structure according to claim 1, characterized in that, The second panel layer is made of a flat metal sheet; and / or The fastener is a self-tapping screw; and / or The thermal conductivity of the insulation layer is less than or equal to 0.04 W / (mk).
10. A container, characterized in that, The container includes a wall assembly, a door assembly, a roof assembly, and a bottom assembly, any one of which is configured as or includes the wall structure of any one of claims 1 to 9.