A lightweight insulation board structure

Abstract

This utility model discloses a lightweight insulation board structure comprising a mesh partition layer, a main body layer disposed on both sides thereof, a fiberglass layer covering the outer surface of the main body layer, and fiberglass reinforcing ribs embedded within the mesh partition layer. The main body layer and the mesh partition layer are tightly bonded together, forming multiple independent vacuum chambers. This utility model achieves high strength through the fiberglass shell and internal composite reinforced mesh skeleton, which can resist vibration and impact during refrigerated truck transportation; at the same time, it utilizes polyurethane and independent vacuum chambers to achieve efficient composite insulation. Furthermore, the independent chamber design overcomes the defect of "one puncture and it's ruined," meaning that even if the board is partially damaged, only that single chamber fails, maintaining the overall insulation performance, resulting in extremely high reliability and achieving lightweight design.

Description

Technical Field

[0001] This utility model relates to the field of cold chain logistics equipment technology, and in particular to a lightweight insulation board structure. Background Technology

[0002] Cold chain logistics is a crucial link in ensuring the quality of temperature-sensitive products such as fresh produce and pharmaceuticals, and refrigerated trucks are the core equipment for cold chain transportation. The insulation performance of a refrigerated truck compartment directly determines energy consumption and cargo safety during transportation.

[0003] Currently, refrigerated truck bodies commonly employ a sandwich structure consisting of fiberglass skin, polyurethane foam core, and fiberglass skin. While this structure is technologically mature, it has significant drawbacks: First, polyurethane has a physical limit to its thermal conductivity. To achieve higher insulation requirements, such as transporting frozen goods or operating in extremely hot environments, the only solution is to increase the thickness of the polyurethane core. This directly reduces the effective volume within the truck body, lowering transportation efficiency. Second, thicker insulation panels mean greater vehicle weight. This not only increases fuel consumption but, more importantly, reduces the effective load, decreasing the weight of goods that can be transported per trip. Furthermore, poor insulation performance forces the onboard refrigeration unit to operate at high loads for extended periods, further increasing fuel consumption.

[0004] Furthermore, refrigerated trucks are subjected to continuous road bumps, vibrations, and frame twisting during operation, and face the risk of high-intensity impacts during loading and unloading, especially when using forklifts. Traditional polyurethane foam core materials have limited structural strength and are prone to cracking, delamination, or localized crushing under long-term stress and impact, leading to decreased insulation performance and damage to the truck body.

[0005] Therefore, there is a need to provide a new type of insulation board that simultaneously meets the requirements of lightweight, thinness, high structural strength, and high reliability in insulation performance. Utility Model Content

[0006] The purpose of this utility model is to provide a lightweight insulation board structure to solve the technical problems of existing refrigerated truck insulation boards being heavy, occupying volume, having insufficient strength, and being prone to failure of traditional vacuum boards.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a lightweight insulation board structure, the lightweight insulation board structure comprising: Mesh partition layer; The main body layer is disposed on the upper and lower sides of the mesh partition layer, and the main body layer and the mesh partition layer are closely fitted to form multiple independent vacuum chambers; Fiberglass, wherein the fiberglass covers the outer surface of the main body layer; A glass fiber reinforcing rib is disposed within the mesh partition layer, and the arrangement of the glass fiber reinforcing rib is the same as that of the mesh partition layer.

[0008] In one embodiment, the main body layer is a polyurethane layer.

[0009] In one embodiment, the mesh separating layer is distributed in a diamond-shaped mesh pattern.

[0010] In one embodiment, the glass fiber reinforcing ribs are completely covered by the material of the mesh partition layer, and the two together form an integrated composite reinforcing mesh skeleton.

[0011] In one embodiment, the main body layer is airtightly connected to the upper and lower surfaces of the mesh separator layer by hot-melt bonding.

[0012] In one embodiment, the mesh separator layer is made of a non-metallic material with low thermal conductivity.

[0013] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages: The lightweight insulation board structure provided in this embodiment combines the advantages of polyurethane insulation and vacuum insulation, achieving insulation performance far exceeding that of pure polyurethane boards of the same thickness. This means that the board material can be made thinner while meeting the same insulation standards. Thinner body panels significantly increase the effective internal volume of the refrigerated truck while reducing the vehicle's curb weight, thereby directly increasing the payload and bringing greater economic benefits to logistics transportation.

[0014] Furthermore, the lightweight insulation panel structure provided in this embodiment has multiple independent vacuum chambers, solving the problem of traditional vacuum panels being easily broken after collisions in refrigerated trucks. During loading and unloading, even if the panel is partially punctured by forklift teeth or sharp corners of cargo, only a very small number of vacuum chambers will fail, while the vast majority of chambers will maintain a highly efficient vacuum insulation state. The overall insulation performance of the panel experiences minimal degradation, significantly improving the durability and reliability of the truck bed.

[0015] Finally, this invention utilizes a composite structure formed by a fiberglass outer shell as the inner and outer skin of the refrigerated truck body and an internal mesh partition layer, along with fiberglass reinforcing ribs, to create a double high-strength support. This results in excellent bending, compressive, and impact resistance, effectively resisting the continuous vibrations and torsional loads generated by refrigerated trucks traveling on complex road conditions, as well as the rough impacts during loading and unloading, ensuring the stability of the truck body structure and extending its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional schematic diagram of the lightweight insulation board structure provided in this embodiment of the utility model; Figure 2 for Figure 1 Sectional view at point AA.

[0018] The labels for the various figures are as follows: 1. Mesh partition layer; 2. Main body layer; 3. Vacuum chamber; 4. Fiberglass; 5. Fiberglass reinforcing ribs. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Please see Figures 1 to 2 This application provides a lightweight insulation board structure, including a mesh partition layer 1 sandwiched in the middle, and main body layers 2 disposed on the upper and lower sides of the mesh partition layer 1. Optionally, the main body layer 2 is a polyurethane layer. Polyurethane is a high-performance closed-cell rigid foam insulation material.

[0024] like Figure 2 As shown, the mesh-like separator layer 1 is distributed in a grid pattern, specifically a diamond-shaped grid, which provides excellent stability under stress. The upper and lower main body layers 2 (polyurethane layers) are tightly bonded to the mesh-like separator layer 1 using airtight connections such as hot-melt adhesive, forming multiple independent vacuum chambers 3. These chambers are evacuated during production, utilizing the vacuum environment to block heat conduction and convection, providing higher insulation performance compared to conventional materials. The airtight connection formed by hot-melt adhesive ensures that there are no microscopic gaps between the mesh and the main body layer 2. When a chamber is punctured, air cannot "crosstalk" to adjacent chambers through the adhesive interface. This ensures the characteristic of "single-point failure, localized damage," overcoming the "one leak, all is lost" defect of traditional VIP panels, making it suitable for harsh environments such as refrigerated trucks with frequent loading and unloading.

[0025] To enable the panels to withstand more complex stresses, this invention employs a double-reinforcement structure: First, fiberglass 4 is covered on the outermost surface of the main body layer 2. Fiberglass 4 is typically used as the inner and outer skin of refrigerated truck compartments, providing a robust, corrosion-resistant, easy-to-clean surface that meets food and pharmaceutical contact standards, while also exhibiting excellent impact resistance and weather resistance, protecting the internal insulation structure.

[0026] Secondly, fiberglass reinforcing ribs 5 are pre-embedded inside the mesh partition layer 1. These reinforcing ribs are arranged along the direction of the ribs in the mesh partition layer 1 (e.g., the edge of the diamond mesh). The fiberglass reinforcing ribs 5 are completely covered by the material of the mesh partition layer 1 (preferably a non-metallic material with low thermal conductivity, specifically high-density rigid polyurethane foam, phenolic foam, etc.), and the two together form an integrated "composite reinforced mesh skeleton". The complete coverage isolates the fiberglass reinforcing ribs 5 from the outside environment (especially the residual moisture in the vacuum chamber 3), preventing the fibers from degrading due to long-term moisture or chemical corrosion, and ensuring the long-term durability of the carriage skeleton. This skeleton acts like the "keel" of the board, greatly improving the overall bending and compressive strength of the board, making the carriage less prone to deformation and cracking under long-term vibration and impact.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight thermal insulation board structure, characterized in that, The lightweight insulation board structure includes: Mesh partition layer; The main body layer is disposed on the upper and lower sides of the mesh partition layer, and the main body layer and the mesh partition layer are closely fitted to form multiple independent vacuum chambers; Fiberglass, wherein the fiberglass covers the outer surface of the main body layer; A glass fiber reinforcing rib is disposed within the mesh partition layer, and the arrangement of the glass fiber reinforcing rib is the same as that of the mesh partition layer.

2. The lightweight insulation board structure according to claim 1, characterized in that: The main body layer is a polyurethane layer.

3. The lightweight insulation board structure according to claim 1, characterized in that: The mesh separator layer is distributed in a diamond-shaped grid pattern.

4. The lightweight insulation board structure according to claim 1, characterized in that: The glass fiber reinforcing ribs are completely covered by the material of the mesh partition layer, and the two together form an integrated composite reinforcing mesh skeleton.

5. The lightweight insulation board structure according to claim 1, characterized in that: The main body layer is airtightly connected to the upper and lower surfaces of the mesh separator layer by hot-melt bonding.

6. The lightweight insulation board structure according to claim 1, characterized in that: The mesh separator layer is made of a non-metallic material with low thermal conductivity.

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