Heat insulation sandwich panel for combined refrigeration house

Abstract

The utility model provides a heat insulation sandwich panel for a combined refrigeration house, which comprises an outer layer panel, an inner layer panel and an outer layer panel, the inner-layer substrate is used for providing internal support; the heat insulation filling material is filled between the outer-layer panel and the inner-layer substrate and is used for reducing heat conduction; the splicing frames are arranged on the edges of the two sides of the sandwich board and used for being connected with other sandwich boards; the lock catch groove is formed in the outer side of the splicing frame on one side; the splicing frame on the other side is provided with a lock catch groove, the splicing flange is arranged on the outer side of the splicing frame on the other side, the splicing flange comprises a gradually-changed section to enhance the attaching performance, the lock catch groove is matched with the splicing flange in an embedded mode to achieve fastening between the adjacent sandwich boards, and the inner wall of the splicing frame is provided with a groove; the grooves are filled with sealing gaskets so as to improve the sealing performance when the adjacent sandwich boards are spliced. Through the scheme of the embodiment of the invention, the cold bridge effect can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building materials, in particular to a heat-insulating sandwich panel for combined cold storage. BACKGROUND

[0002] The heat-insulating sandwich panel for combined cold storage is a building material specially used for cold storage construction, which is composed of a metal panel and an internal high-efficiency heat-insulating core material (such as polyurethane foam or other thermal insulation materials). It has the characteristics of light weight, good heat-insulating performance, and convenient installation, and is widely used in cold storage, cold chain storage and other fields to ensure the temperature control effect. However, in actual application, this heat-insulating sandwich panel has the problem of cold bridge effect. Because the thermal conductivity of the metal panel or the connecting structure is strong, it is easy to cause the cold energy to be conducted out through the gap or node between the materials, thereby affecting the overall thermal insulation effect and energy consumption performance of the cold storage. SUMMARY

[0003] Therefore, the present application provides a heat-insulating sandwich panel for combined cold storage, which at least partially solves the problems existing in the prior art.

[0004] The heat-insulating sandwich panel for combined cold storage of the present application comprises:

[0005] an outer panel, which is an external protective structure of the sandwich panel;

[0006] an inner substrate, which is used to provide internal support;

[0007] a heat-insulating filling material, which is filled between the outer panel and the inner substrate to reduce heat conduction;

[0008] a splicing frame, which is arranged at both side edges of the sandwich panel and is used to connect with other sandwich panels;

[0009] a locking slot, which is arranged on the outside of the splicing frame on one side;

[0010] a plug-in flange, which is arranged on the outside of the splicing frame on the other side, the plug-in flange comprising a gradually changing cross section to enhance the fitting performance, wherein

[0011] the locking slot and the plug-in flange are embedded and matched to realize the fastening between adjacent sandwich panels, and the inner wall of the splicing frame is provided with a groove, and the groove is filled with a sealing gasket to improve the sealing performance when the adjacent sandwich panels are spliced.

[0012] According to one embodiment, the end of the plug-in flange has a chamfer structure to facilitate splicing, and the plug-in flange is distributed in multiple levels to reduce the cold bridge effect.

[0013] According to one embodiment, the inner surface of the outer panel is provided with a plurality of groups of positioning protrusions, which are used to cooperate with the positioning holes on the inner substrate to ensure the assembly accuracy.

[0014] According to one embodiment, the inner layer substrate edge is provided with a reinforcing rib to prevent deformation caused by stress during splicing.

[0015] According to one embodiment, the reinforcing rib is a V-shaped structure, which can improve the bending resistance.

[0016] According to one embodiment, the heat insulation filling material includes a moisture-proof and vapor-proof layer for preventing water vapor penetration.

[0017] According to one embodiment, the moisture-proof and vapor-proof layer is a multi-layer composite structure, and a metal mesh is embedded to optimize the heat conduction path distribution.

[0018] According to one embodiment, the inner wall of the locking groove is provided with a textured recess for enhancing the friction between the locking groove and the plug-in flange.

[0019] According to one embodiment, the surface of the plug-in flange is attached with a porous sound-absorbing coating.

[0020] The embodiments of the present disclosure provide a heat-insulating sandwich panel for a combined cold storage, which comprises an outer panel serving as an external protection structure of the sandwich panel, an inner layer substrate for providing internal support, a heat-insulating filling material filled between the outer panel and the inner layer substrate for reducing heat conduction, a splicing frame arranged at the two side edges of the sandwich panel for connecting with other sandwich panels, a locking groove arranged on the outside of the splicing frame on one side, and a plug-in flange arranged on the outside of the splicing frame on the other side, wherein the plug-in flange comprises a gradually changing cross section to enhance the fitting performance, the locking groove and the plug-in flange are embedded and matched to realize fastening between adjacent sandwich panels, and the inner wall of the splicing frame is provided with a groove, and the groove is filled with a sealing gasket to improve the sealing performance when the adjacent sandwich panels are spliced. Through the scheme of the embodiments of the present disclosure, the cold bridge effect can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present disclosure, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be considered as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Figure 1 is a structural schematic diagram of a heat-insulating sandwich panel for a combined cold storage according to the present disclosure;

[0023] Figure 2 is an exploded schematic diagram of a heat-insulating sandwich panel for a combined cold storage according to the present disclosure;

[0024] Figure 3 It is the explosion schematic view of the connection relationship between the splicing frame and the sealing strip in the heat insulation sandwich panel for combined cold storage.

[0025] In the figure: 1, outer panel; 2, inner base plate; 3, heat insulation filling material; 4, splicing frame; 5, lock catch groove; 6, plug-in flange; 7, groove; 8, positioning bump; 9, positioning hole; 10, reinforcing rib; 11, moisture-proof and vapor-proof layer; 12, metal grid; 13, sealing gasket; 14, texture recess; 15, porous sound-absorbing coating DETAILED DESCRIPTION

[0026] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0027] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0028] As Figures 1-3 shown, the heat insulation sandwich panel for combined cold storage of the present application includes a plurality of key components: outer panel 1, inner base plate 2, heat insulation filling material 3, splicing frame 4, lock catch groove 5 and plug-in flange 6. Through the effective cooperation of these components, a sandwich panel with good heat insulation performance and structural stability can be formed.

[0029] The outer panel 1 constitutes the external protection structure of the sandwich panel, mainly responsible for resisting the influence of the external environment. The outer panel 1 is made of metal material with high weather resistance and good strength (such as galvanized steel plate or aluminum plate), usually has a flat surface, which can prevent external moisture, humidity and other harsh weather conditions from causing damage to the overall sandwich panel. At the same time, in order to enhance the protection performance, a corrosion-resistant coating can be coated on the surface of the outer panel 1, further improving the service life and technical effect.

[0030] The inner layer substrate 2 is one of the important components of the sandwich panel, which is located inside the sandwich panel and cooperates with the outer layer panel 1 to form a sealed space. The inner layer substrate 2 is generally made of high-strength metal material or plastic material with certain elasticity and hardness to ensure the stability and anti-deformation of the overall structure of the sandwich panel. In addition, the inner layer substrate 2 provides a good connection interface for other components by precise installation position and shape design, such as providing a bearing platform for the thermal insulation filling material 3, and cooperating with the splicing frame 4 and other components to form an overall assembly scheme.

[0031] The thermal insulation filling material 3 is distributed in the space between the outer layer panel 1 and the inner layer substrate 2, which is a key technical link to achieve low thermal conductivity. The thermal insulation filling material 3 can select different types of products according to application requirements, such as polyurethane foaming material, rock wool or extruded polystyrene foam board, etc. These materials all have excellent thermal insulation effect and low thermal conductivity. The preparation method mainly includes on-site injection molding foaming or pre-prepared board assembly, thereby maximizing the thermal insulation performance of the overall structure.

[0032] The splicing frame 4 is located at the edge of the sandwich panel on both sides, which is used to complete the close butt joint with other sandwich panels. The splicing frame 4 is made of alloy or engineering plastic material with certain mechanical strength, which can adapt to cold deformation to ensure that there is no fracture phenomenon during installation, and can provide reliable rigidity guarantee under different environmental conditions. According to actual needs, the splicing frame 4 can be pre-prepared with various types of interface forms to meet the requirements of flexible assembly, such as the groove 7 structure and the embedded slot design, which makes the subsequent splicing operation more simple and convenient.

[0033] The locking groove 5 is a functional part provided on one side of the splicing frame 4, which is mainly used to cooperate with the corresponding locking part to enhance the connection strength between adjacent sandwich panels. The locking groove 5 is processed by precise mold opening process to ensure that the size tolerance reaches a very small range, so as to avoid the problems of loose connection or too large gap after connection. When the related structure on the other sandwich panel is inserted into this area, the two parts of the sandwich panel are tightly combined into one through reasonable force distribution, thereby enhancing the consistency and stability of the overall structure.

[0034] The plug-in flange 6 is provided on the opposite edge of the splicing frame 4, which plays an important role in reducing the width of the splicing joint. After the gradual change of the cross-section design of the plug-in flange 6, the flexible fitting performance is more excellent, and the thickness gradient of the flange can be adjusted according to the requirements in actual application to ensure that the close contact effect is more excellent. Specifically, the end of the flange adopts chamfering process to reduce the interference phenomenon during splicing; in addition, after optimization by multi-level staggered arrangement, the cold bridge effect that may exist is effectively reduced, and the overall thermal insulation performance is improved.

[0035] In terms of the technical problem of how to reduce the cold bridge effect, the present application makes a breakthrough through a series of targeted design solutions: on the one hand, the multi-level staggered distribution optimization is achieved through the insertion flange 6, which breaks the heat conduction concentration area that may be caused by the traditional linear contact form; on the other hand, the strict control of the filling quality of the heat insulation filling material 3 and the uniform distribution method are used to avoid the formation of local weak points, thereby achieving the purpose of significantly improving the influence of the cold bridge effect on the cold storage environment temperature regulation as a whole.

[0036] As shown in Figure 3 In one embodiment, the present application provides a splicing frame 4 for the combined cold storage heat insulation sandwich panel, which is provided with a recess 7 on the inner wall of the splicing frame 4, which is specially used to accommodate a sealing gasket 13, thereby enhancing the sealing performance when adjacent sandwich panels are spliced. This design forms a stable and reliable fixing point by installing the sealing gasket 13 in the specific recess 7 position on the inner wall of the splicing frame 4, ensuring that it can always maintain good cooperation with the sandwich panel during use. Due to the presence of the sealing gasket 13, the possibility of external air infiltration or cold loss is significantly reduced, thereby improving the energy utilization rate of the entire cold storage environment.

[0037] Specifically, the recess 7 is usually located on one side of the inner wall of the splicing frame 4 near the insertion flange 6 or the locking groove 5, and extends along the edge direction of the sandwich panel, so as to facilitate the overall installation and replacement of the sealing gasket 13. In addition, the depth and width of the recess 7 are adjusted according to the actual application requirements to adapt to sealing gaskets 13 of different thicknesses and materials. For example, during the manufacturing process, the recess 7 area can be directly reserved during the integrated manufacturing stage of the splicing frame 4 through injection molding process, or precise molding can be achieved by using post-machining method, to ensure that the sealing gasket 13 can be tightly fitted after assembly, and no loosening or deformation occurs. This method ensures the consistency of the sealing performance of the spliced sandwich panel, and also facilitates on-site installation operation.

[0038] As shown in Figure 2 In one embodiment, the present application provides a splicing frame 4 for the combined cold storage heat insulation sandwich panel, which is provided with a recess 7 on the inner wall of the splicing frame 4, which is specially used to accommodate a sealing gasket 13, thereby enhancing the sealing performance when adjacent sandwich panels are spliced. This design forms a stable and reliable fixing point by installing the sealing gasket 13 in the specific recess 7 position on the inner wall of the splicing frame 4, ensuring that it can always maintain good cooperation with the sandwich panel during use. Due to the presence of the sealing gasket 13, the possibility of external air infiltration or cold loss is significantly reduced, thereby improving the energy utilization rate of the entire cold storage environment.

[0039] For example, the uniformly distributed protruding structures can be formed on the inner surface of the outer panel 1 by a stamping or die forming process. Meanwhile, positioning holes 9 with corresponding diameters and depths are pre-set during the manufacturing of the inner base plate 2, so that they can smoothly receive the positioning protrusions 8 and be fixed. Specifically, the gap between the positioning protrusions 8 and the positioning holes 9 needs to be controlled within a reasonable range to ensure the reliability of the connection, but at the same time, a slight interference fit is retained in order to improve the anti-vibration performance and overall rigidity. Such a technical solution is simple and feasible and is convenient for mass standardized production.

[0040] As shown in FIG. 1, in one embodiment, the inner base plate 2 of the composite cold storage insulation sandwich panel of the present application is provided with a reinforcing rib 10 structure at the edge thereof. The reinforcing rib 10 is installed on the peripheral part of the inner base plate 2 through reasonable layout and forms a closed frame around the edge of the inner base plate 2. The connection between the reinforcing rib 10 and the inner base plate 2 can be achieved by one-piece forming, or can be assembled by adhesion or mechanical fixation. The design of the reinforcing rib 10 can enhance the ability of the inner base plate 2 to withstand external force during splicing, avoiding the problem of increased cold bridge effect due to deformation. Further, its position is selected close to the splicing area, aiming to reduce the risk of local heat conduction and maintain overall stability. Figure 2 Specifically, by using the reinforcing rib 10 made of high molecular reinforced material and combining with the progressive cross-section optimization design, the influence on the original space layout can be minimized while ensuring the rigidity requirement. In addition, the reinforcing rib 10 can be designed in a multi-level staggered form to match the specific geometric structure of the inner base plate 2, thereby improving the overall reliability of the structure. In this case, the reinforcing rib 10 not only strengthens the edge characteristics of the base plate, but also takes into account the assembly coordination relationship with the splicing frame 4 and the plug-in components.

[0041] As shown in FIG. 1, in one embodiment, the reinforcing rib 10 of the composite cold storage insulation sandwich panel of the present application adopts a V-shaped structure design. This structure effectively disperses the external force action points through its unique geometric shape, improves the overall bending resistance, and at the same time reduces the effective contact area of heat transfer. The V-shaped structure is characterized by its symmetrical slot-shaped distribution, which can guide and distribute internal stress, preventing deformation of the material due to compression or stretching. At the same time, due to the naturally formed spacing effect of the V-shaped slot, the heat conduction path between adjacent areas can be effectively reduced, thereby making the insulation sandwich panel have more excellent energy-saving properties. This design integrates the V-shaped structure into the key load-bearing area inside the insulation sandwich panel, significantly enhancing the overall strength of the panel without additional material, while maintaining good thermal insulation performance.

[0042] Figure 2

[0043] ​​For example, the installation can be completed by pre-embedding V-shaped structural components made of metal foil or high-strength engineering plastics on the thermal insulation filling material 3. One side of the V-shaped structural component closely fits the surface of the inner layer substrate 2, and the other side penetrates into the thermal insulation filling material 3 for fixation, thereby forming a stable overall connection form. Further, to ensure the accurate positioning and stable connection of the reinforcing rib 10, an adaptive groove 7 can be reserved at the corresponding position of the inner layer substrate 2 to cooperate with the installation.

[0044] As shown in Figure 2 , in one embodiment, the moisture-proof vapor barrier 11 is added to the thermal insulation filling material 3 of the combined cold storage insulation sandwich panel of the present application. This moisture-proof vapor barrier 11 is installed at a specific position in the interior or surface layer area of the thermal insulation filling material 3, which can effectively block the penetration of external environmental moisture into the thermal insulation material, thereby maintaining the low thermal conductivity and stability of the thermal insulation filling material 3 itself. Specifically, the moisture-proof vapor barrier 11 can be closely combined with the thermal insulation filling material 3 to prevent moisture from entering the thermal insulation area due to temperature difference or other external factors, reducing the risk of thermal conduction deterioration of the material during use.

[0045] Specifically, the moisture-proof vapor barrier 11 is usually composed of high-density moisture-proof materials, which have strong water resistance and permeability resistance. Its position can be selected to be set on the surface layer of the thermal insulation filling material 3, or to be embedded in the center part of the thermal insulation filling material 3, forming a layered wrapping design. This structure selection is optimized according to the specific application scenario and the expected climate conditions. For example, when the sandwich panel is used in a hot and humid environment, the moisture-proof vapor barrier 11 can be further uniformly dispersed as multiple small units distributed in the key parts inside the thermal insulation filling material 3, thereby providing more uniform overall protection.

[0046] As shown in Figure 2 , in one embodiment, the technical implementation can be completed by a hot-pressing composite process to integrate the moisture-proof vapor barrier 11 with the thermal insulation filling material 3. Specifically, during the production stage of the sandwich panel, the pre-formed moisture-proof vapor barrier 11 is placed between the outer layer panel 1, the inner layer substrate 2 and the thermal insulation filling material 3 at the appropriate position, ensuring that the moisture-proof vapor barrier 11 is firmly bonded to the thermal insulation filling material 3 under the action of pressure and temperature, while the splicing frame 4 area is not affected for subsequent splicing with other sandwich panels.

[0047] As shown in Figure 2As shown, in one embodiment, the moisture-proof and vapor-proof layer 11 of the combined cold storage warehouse sandwich panel of the present application adopts a multi-layer composite structure design, which is arranged between the outer panel 1 and the thermal insulation filling material 3, for effectively blocking water vapor penetration and reducing heat transfer. The moisture-proof and vapor-proof layer 11 is composed of multiple functional layers, for example, the surface layer can adopt a corrosion-resistant polymer film to improve environmental adaptability, and the bottom layer selects a material with certain elasticity or softness to adapt to the small deformation requirement during installation. Through multi-layer composite design, the moisture-proof and vapor-proof layer 11 can not only significantly enhance the barrier performance, but also ensure its physical strength and durability.

[0048] Specifically, a metal grid 12 is embedded inside the moisture-proof and vapor-proof layer 11, which is arranged at a specific interval and penetrates the entire moisture-proof and vapor-proof layer 11. Its main function is to optimize the distribution of heat conduction path and prevent the cold bridge effect caused by local temperature unevenness. The metal grid 12 is closely combined with the multi-layer structure of the moisture-proof and vapor-proof layer 11 to ensure the consistency and functionality of the overall structure. For example, the metal grid 12 can be accurately fixed at the predetermined position through a pressing process, and wrapped in the composite material layer through coating or melting cladding, so that the metal grid 12 is firmly connected in the moisture-proof and vapor-proof layer 11, thereby realizing the technical feasibility.

[0049] As shown, Figure 1 In one embodiment, the splicing frame 4 of the combined cold storage warehouse sandwich panel of the present application is provided with a lock slot 5 on one side, which is used to embed the matching material to complete the connection between adjacent sandwich panels. Specifically, the inner wall of the lock slot 5 is provided with a textured recess 14, which serves to enhance the friction between the embedded lock and the inner surface of the slot. This design can ensure that the connecting components are not easy to slip due to external force or vibration during use, thereby maintaining the long-term stability of the structure. The textured recess 14 is formed by irregular micro-surface treatment, which can be completed at one time through mold forming technology in actual processing.

[0050] For example, when making the splicing frame 4 of the sandwich panel, a special-shaped injection mold can be used to texture the inner wall of the lock slot 5. Specifically, by adjusting the raised features of the cavity in the mold, the inner wall of the lock slot 5 naturally has a micro-textured structure after molding. This processing method not only improves production efficiency, but also meets the integration requirements of the overall manufacturing process. In this embodiment, the position and function of the lock slot 5 are further optimized to adapt to various installation requirements.

[0051] As shown, Figure 1As shown, in one embodiment, the plug-in flange 6 of the composite cold storage sandwich panel of the present application is attached with a porous sound-absorbing coating 15 covering the entire surface of the plug-in flange 6 to achieve the suppression of acoustic resonance. The porous sound-absorbing coating 15 is made of materials with certain porosity and sound-absorbing properties, which can buffer the gas or solid contact noise caused by temperature changes during the connection of the sandwich panel. Specifically, the design of the coating combines the actual use scenario, and by fully treating the outside of the plug-in flange 6, it has additional functionality. The plug-in flange 6 will produce a small gap during cooperation with other components, at which time the porous structure can convert the energy of sound waves into heat and dissipate, reducing unnecessary noise propagation.

[0052] For example, the porous sound-absorbing coating 15 can be attached to the surface of the plug-in flange 6 by spraying, dipping or hot melting, etc. process, and in order to ensure uniform coverage and long-term durability, polyurethane or porous rubber materials can be selected for preparation. In addition, in order to better adapt to the cold storage environment, the coating also adds a moisture-proof agent to resist the influence of moisture and ensure the stable play of the overall function.

[0053] In actual operation, when the device is in use, the outer panel 1 and the inner base plate 2 can be combined to form a closed space, and the cavity between the outer panel 1 and the inner base plate 2 is filled with thermal insulation material to effectively reduce the heat conduction performance. Subsequently, the splicing frame 4 is connected with other sandwich panels, one side of the locking slot 5 is used to embed the matching locking structure to achieve firm fastening between adjacent sandwich panels, and the other side of the plug-in flange 6 is inserted into the locking slot 5 of the adjacent sandwich panel, thereby reducing the gap generated during splicing and improving the sealing performance. The plug-in flange 6 can better adapt to the flexible fitting requirement through its gradually changing cross-sectional design, and the chamfer structure at its end can facilitate the splicing process, and the multi-level staggered distribution design optimizes the influence of cold bridge effect, improving the overall thermal insulation performance and stability.

[0054] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A heat-insulating sandwich panel for modular cold storage, characterized in that, include: The outer panel (1) is the external protective structure of the sandwich panel; Inner substrate (2) is used to provide internal support; Thermal insulation filler material (3) is filled between the outer panel (1) and the inner substrate (2) to reduce heat conduction; The splicing frame (4) is set on both sides of the sandwich panel and is used to connect with other sandwich panels; The locking groove (5) is located on the outside of the splicing frame (4) on one side; A connecting flange (6) is disposed on the outer side of the splicing frame (4) on the other side. The connecting flange (6) includes a gradient cross-section to enhance the fitting performance. The locking groove (5) is engaged with the insertion flange (6) to achieve fastening between adjacent sandwich panels. The inner wall of the splicing frame (4) is provided with a groove (7), and the groove (7) is filled with a sealing gasket (13) to improve the sealing performance when adjacent sandwich panels are spliced.

2. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The end of the insertion flange (6) has a chamfered structure to facilitate splicing, wherein the insertion flange (6) is distributed in multiple layers to reduce the cold bridge effect.

3. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The inner surface of the outer panel (1) is provided with multiple sets of positioning protrusions (8) for cooperating with the positioning holes (9) on the inner substrate (2) to ensure assembly accuracy.

4. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The inner substrate (2) is provided with reinforcing ribs (10) at its edge to prevent deformation due to force during splicing.

5. The insulated sandwich panel for combined cold storage according to claim 4, characterized in that: The reinforcing rib (10) has a V-shaped structure, which can improve the bending resistance.

6. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The heat insulation filling material (3) includes a moisture-proof vapor barrier layer (11) to prevent water vapor penetration.

7. The insulated sandwich panel for combined cold storage according to claim 6, characterized in that: The moisture-proof vapor barrier (11) is a multi-layer composite structure with embedded metal mesh (12) to optimize the heat conduction path distribution.

8. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The inner wall of the locking groove (5) is provided with textured recesses (14) to enhance the friction between it and the insertion flange (6).

9. The insulated sandwich panel for combined cold storage according to claim 1, characterized in that: The surface of the insertion flange (6) is coated with a porous sound-absorbing coating (15).

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