Invisible frame box structure and its cold-bridge prevention foamed plate

Abstract

The utility model provides a kind of invisible framework box structure and its cold bridge prevention foamed board, wherein, including: first panel and second panel of horizontal relative arrangement, the first panel is set to outside, the second panel is set to inside, and one panel at least has one side edge relative to the side edge of another panel and protrudes outward to form stepped butt joint, the butt joint is used for the splicing between adjacent foamed board and / or with the mounting connection of external structure;At the butt joint, the inside of protruding panel is equipped with reinforcing rib;At the butt joint, the first panel is equipped with spacing strip between second panel, for blocking the heat conduction between them;The first panel is filled with polyurethane foaming layer between second panel.The utility model cuts off the heat conduction path of inside and outside panel and frame body connecting place by stepped panel design and low thermal conductivity spacing strip physical isolation, avoids panel outer surface edge condensation, and significantly improves overall thermal insulation performance.

Description

Technical Field

[0001] This utility model relates to the technical field of insulation materials for air supply ducts of air handling equipment, specifically to a foamed board with a cold bridge prevention structure and an invisible frame box structure composed of the foamed board. Background Technology

[0002] In rotary dehumidifiers, air ducts, insulated rooms, and other enclosure structures, the connection between traditional metal frames and insulation panels often creates a heat conduction path (i.e., a "cold bridge") due to direct contact. This leads to heat loss, reduced insulation performance, and condensation along the edges of the panel surface. Furthermore, the panels and frames are typically fixed directly with self-drilling screws, which can result in insufficient panel strength, leading to uneven, wavy surfaces, loose screws, and air leaks. Additionally, the frames of traditional enclosures are often exposed, affecting aesthetics and making them susceptible to corrosion. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a cold bridge-resistant foam board and an invisible frame box, which has the advantage of preventing the bottom mold from sliding.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution: According to the embodiments disclosed in this utility model, a first aspect provides an anti-cold bridging foam board, comprising: A first panel and a second panel are arranged horizontally opposite each other, with the first panel located on the outside and the second panel located on the inside. At least one side of one panel protrudes outward relative to the side of the other panel to form a stepped mating part. The mating part is used for splicing between adjacent foam boards and / or for installation connection with external structures. At the docking portion, a reinforcing rib is provided on the inner side of the protruding panel; At the docking portion, a spacer strip is provided between the first panel and the second panel to block heat conduction between them; A polyurethane foam layer is filled between the first panel and the second panel.

[0005] The above technical solution achieves the goal of blocking direct heat conduction between the first and second panels by using a spacer strip, effectively avoiding heat transfer loss and improving thermal insulation performance, and preventing condensation from appearing on the outer edge of the panel. The reinforcing ribs enhance the bending stiffness of the joint, preventing the panel from deforming when fastened or under stress. During installation, it is only necessary to attach the joint to another material and fix it with screws, making installation convenient.

[0006] In one embodiment of the present invention, the first panel has a first bend that folds inward at the mating portion, and the second panel has a second bend that bends vertically inward at the mating portion.

[0007] The above technical solution provides a connection point with the spacer strip through the first and second bending parts, and can effectively enhance the bending stiffness of the mating part, preventing the panel from deforming when fastened or under stress.

[0008] In one embodiment of the present invention, one end of the spacer strip is provided with a receiving groove for the first bent portion and / or reinforcing rib to be inserted, and the other end is provided with a slot for the second bent portion to be inserted.

[0009] In one embodiment of this utility model, the receiving groove and the card slot are arranged perpendicular to each other.

[0010] The above technical solution allows the spacer strip to be directly inserted into the first and second bends, making installation convenient and facilitating post-installation bonding and fixing.

[0011] In one embodiment of the present invention, the slot has an inclined opening end on one side and a support for supporting the reinforcing rib on the other side.

[0012] To achieve the above technical solution, the support bracket supports the reinforcing rib during assembly, ensuring accurate alignment and strengthening the stress.

[0013] In one embodiment of this utility model, the mating part and the reinforcing rib are respectively provided with through holes for bolts to pass through.

[0014] In one embodiment of this utility model, the mating portion and / or the reinforcing rib are provided with nuts that mate with the bolt.

[0015] The above technical solution effectively strengthens the panel connection by applying bolt force to the reinforcing ribs, making fixing easier.

[0016] In one embodiment of this utility model, a decorative rubber plug is provided on the outside of the through hole of the docking portion.

[0017] According to the present invention, a second aspect provides an invisible frame box, including four or more anti-cold bridge foam boards as described above, and a skeleton for installing the anti-cold bridge foam boards. The joint portion of the foam boards covers the outside of the skeleton, so that the skeleton is hidden inside the foam boards.

[0018] The above technical solution utilizes anti-cold bridge foam board to wrap the frame, eliminating heat transfer caused by direct exposure of the metal frame. This fundamentally avoids condensation at the panel edges due to the cold bridge effect, significantly improving overall thermal insulation performance and resulting in a more aesthetically pleasing overall appearance.

[0019] In one embodiment of this utility model, a sponge strip is provided between the foam board and the skeleton body.

[0020] The above technical solution effectively fills the tiny assembly gap between the panel and the frame by using sponge strips, while avoiding direct contact between the frame and the panel, thus improving the thermal insulation performance.

[0021] As described above, the present invention has the following beneficial effects: This invention provides a cold-bridge-resistant foamed board and a concealed frame enclosure. Through a stepped panel design and physical isolation by low-thermal-conductivity spacers, the heat conduction path at the connection point of the inner and outer panels is cut off, preventing condensation on the outer surface edges of the panels and significantly improving overall insulation performance. The reinforcing ribs on the inner side of the joint and the bending design of the panel enhance local connection strength, enabling the board to withstand greater installation force and usage load. The pre-set receiving grooves on the spacers precisely match the bent parts of the panels, facilitating production and assembly. The through holes and pre-set nuts on the joint ensure quick and secure on-site installation. When used in enclosure structures, the joint completely encloses the internal frame, forming a smooth and flat surface, preventing heat conduction and corrosion of the exposed frame. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of the anti-cold bridge foam board in an embodiment of this utility model.

[0023] Figure 2 The diagram shown is an exploded view of the anti-cold bridge foam board in an embodiment of this utility model.

[0024] Figure 3 The image shown is a front view of the anti-cold bridge foam board (model A) in this embodiment of the present invention.

[0025] Figure 4 Displayed as Figure 3 The right view.

[0026] Figure 5 Displayed as Figure 3 A bottom view.

[0027] Figure 6 Displayed as Figure 5 A magnified view of part A.

[0028] Figure 7 The image shown is a front view of the anti-cold bridge foam board (model B) in this embodiment of the present invention.

[0029] Figure 8 Displayed as Figure 7 A bottom view.

[0030] Figure 9 Displayed as Figure 8 A magnified view of section B.

[0031] Figure 10The image shown is a front view of the anti-cold bridge foam board (model C) in this embodiment of the present invention.

[0032] Figure 11 Displayed as Figure 10 A bottom view.

[0033] Figure 12 Displayed as Figure 11 A magnified view of a portion of point C.

[0034] Figure 13 The diagram shown is a structural schematic of the first spacer in an embodiment of this utility model.

[0035] Figure 14 The diagram shown is a structural schematic of the second spacer in an embodiment of this utility model.

[0036] Figure 15 The diagram shown is a structural schematic of the skeleton body in an embodiment of this utility model.

[0037] Figure 16 The diagram shown is a structural schematic of the invisible frame box in an embodiment of this utility model.

[0038] Figure 17 The diagram shown is a schematic diagram of the assembly structure of the invisible frame box in an embodiment of this utility model.

[0039] Figure 18 Displayed as Figure 17 A schematic diagram of the assembled structure.

[0040] Figure 19 This is a schematic diagram of another assembly structure of the invisible frame box in an embodiment of this utility model.

[0041] Figure 20 Displayed as Figure 19 A schematic diagram of the assembled structure.

[0042] Component designation explanation 11. First panel; 111. First bend; 12. Second panel; 121. Second bend; 13. Butt joint; 14b. Groove; 20. Reinforcing rib; 30. Spacer strip; 31. First spacer strip; 311. First receiving groove; 312. First slot; 32. Second spacer strip; 321. Second receiving groove; 322. Second slot; 323. Support; 40. Polyurethane foam layer; 50. Bolt; 51. Nut; 60. Plug; 70. Frame; 80. Sponge strip; 90. Sealant. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. For ease of distinction, the same type of component is distinguished by lowercase letters in different embodiments, for example: first panel 11a, first panel 11b, first panel 11c.

[0044] Please see Figures 1 to 4 The first aspect of this utility model provides an anti-cold bridge foam board. The anti-cold bridge foam board of this embodiment has a rectangular plate structure, including a first panel 11, a second panel 12, reinforcing ribs 20, spacers 30, and a polyurethane foam layer 40. The first panel 11 and the second panel 12 can be made of galvanized color steel plate, stainless steel plate, or aluminum plate, etc. The first panel 11 and the second panel 12 are arranged horizontally opposite each other. The first panel 11 is located on the outer side (i.e., usually serving as the outer surface of the box structure), and the second panel 12 is located on the inner side (i.e., usually serving as the interior of the box structure). At least one side of one panel protrudes outward relative to the side of the other panel to form a stepped joint 13 for installation. The stepped joint 13 achieves an "invisible frame" and convenient installation. It is understandable that, based on actual installation requirements, to enable the mating parts to be used for splicing between adjacent foam panels and / or for installation connection with external structures, the foam panels can be configured such that the length and width of the first panel 11a are both greater than the length and width of the second panel 12a, forming a "Type A" structure where the four sides of the first panel 11a protrude relative to the four sides of the second panel 12a; or the length and width of the first panel 11b are both less than the length and width of the second panel 12b, forming a "Type B" structure where the four sides of the second panel 12b protrude relative to the four sides of the first panel 11b; and the length and width of the first panel 11c are the same as the length and width of the second panel 12c, but they are staggered, forming a "Type C" structure where at least one side of the first panel 11c protrudes relative to the side of the second panel 12c, with the first and second panels protruding alternately, etc. Example

[0045] This embodiment takes structure A as an example. The first panel 11a and the second panel 12a are horizontally opposite each other, forming a cavity between them. Through a high-pressure injection process, a continuous, dense, and heat-insulating polyurethane foam layer 40a is formed in the cavity. The four sides of the first panel 11a protrude outward relative to the four sides of the second panel 12a, forming a mating portion 13a with the sides of the second panel 12a. The protruding end of the first panel 11a is bent at 90° toward the second panel 12a, and then bent back at 90° toward the foam layer 40a to form a first bent portion 111a; the protruding end of the second panel 12a is bent at 90° toward the first panel 11a to form a second bent portion 121a. The first bent portion 111a and the second bent portion 121a enhance the edge strength of the mating portion and provide a connection point with the first spacer strip 31a. A reinforcing rib 20a is provided on the inner side of the first bend 111a. The reinforcing rib 20a can be in the form of a sheet or strip. In this embodiment, the reinforcing rib 20a is sheet-shaped and L-shaped, and is fixedly connected to the fold of the first bend 111a. The fixing method can be riveting, welding, or adhesive bonding. In this embodiment, welding is used for fixing. The reinforcing rib 20a strengthens the force during assembly of the butt joint 13a, enhances the bending stiffness of the butt joint, and prevents the panel from deforming when tightened or under stress, especially at screw and bolt connections.

[0046] The first bend 111a and the second bend 112a are separated from each other and connected by a first spacer 31a, thereby blocking heat conduction between the first panel 11a and the second panel 12a. The first spacer 31a is usually made of engineering plastic with low thermal conductivity, such as PVC, nylon with glass fiber, etc. One end of the first spacer 31a has a first receiving groove 311a for the end of the first bend 111a and / or the reinforcing rib 20a to be inserted, and the other end has a first slot 312a for the second bend 121a to be inserted. The first receiving groove 311a and the first slot 312a are usually arranged perpendicular to each other to match the direction of the two panel bends and provide convenient installation. Before foaming, the spacer 30 is snapped or inserted between the two panel bends like a "clamp" and fixed to form a physical isolation. The side of the first slot 312a facing the foam layer can be configured as an inclined opening, so that the second bent part 121a can slide into the first slot 312a along the inclined opening. With the above-mentioned anti-cold bridge foam panel structure, when it is necessary to splice adjacent foam panels and / or install them with the external frame structure, it is only necessary to attach the other material of the mating part and fix it with screws, which effectively avoids heat transfer loss, improves thermal insulation performance, and prevents condensation from appearing on the outer edge of the panel.

[0047] In some specific examples, the connecting portion 13a of the first panel 11a has a through hole for the bolt 50 to pass through. The bolt 50 can be directly screwed to another material through the through hole, avoiding the wavy unevenness of the installation surface caused by direct fixing with self-drilling screws, further improving installation stability, making the installation smoother, and preventing air leakage. At the same time, the bolt force on the reinforcing rib can effectively strengthen the strength of the panel connection, making fixing easier. The connecting portion 13a of the first panel 11a can be equipped with a pre-embedded nut, or a nut or threaded hole that mates with the bolt can be provided on the reinforcing rib 20a, providing diverse fixing methods for installation. In some embodiments, a decorative rubber plug 60 is provided at the through hole on the outer side of the connecting portion 13a of the first panel 11a. The decorative rubber plug is made of elastic material. After being pressed into the through hole, it is flush with or slightly raised with the panel surface, effectively achieving waterproofing and dustproofing at the through hole, while also making the overall appearance more aesthetically pleasing. Example

[0048] This embodiment uses structure B as an example. Structure B is basically the same as structure A, the main difference being that they are mirror images of each other. That is, the length and width of the second panel 12b are both greater than those of the first panel 11b, forming protruding mating portions 13b on all four sides of the second panel 12b. Grooves 14b for the passage of crossbars of the frame are provided at the four corners of the mating portions 13b. The first panel 11b and the second panel 12b are horizontally opposite each other, forming a cavity between them, which is filled with a polyurethane foam layer 40b. All four sides of the second panel 12b protrude outwards relative to the four sides of the first panel 11b, forming mating portions 13b with the sides of the first panel 11b. The protruding end of the second panel 12b is bent at a 90° angle toward the first panel 11b, and then folded back at a 90° angle toward the foam layer 40b to form a first bent portion 121b; the end of the first panel 11b is bent at a 90° angle toward the first panel 11a to form a second bent portion 111b. A reinforcing rib 20b is provided on the inner side of the first bent portion 121b and is fixedly connected to the fold back of the first bent portion 121b.

[0049] The first bent portion 121b and the second bent portion 111b are separated from each other and connected by a second spacer 32b. One end of the second spacer 32b has a second receiving groove 321b for inserting the end of the first bent portion 121b and / or the reinforcing rib 20b, and the other end has a second slot 322b for inserting the second bent portion 111b. The second receiving groove 321b and the second slot 322b are arranged perpendicular to each other. In this embodiment, only the first bent portion 121b is inserted into the second receiving groove 321b, and the reinforcing rib 20b is located below the second spacer 32b. The second slot 322b has an inclined opening end on the side facing the second bent portion 111b, and a support 323b for supporting the reinforcing rib is provided on the side facing the first bent portion 121b. The support is used to support the reinforcing rib during assembly, ensuring accurate alignment and strengthening the force. The second spacer 32b and the reinforcing rib 20b have through holes for bolts 50 to pass through. The reinforcing rib 20b is provided with a nut or threaded hole to mate with the bolt as a fastener. In this embodiment, the nut 51 is used as the fastener. When it is necessary to connect the "Type A" anti-cold bridge foam board with the "Type B" anti-cold bridge foam board, simply pass the bolt 50 through the through holes of the mating part 13a, the reinforcing rib 20a, and the second spacer 32b in sequence, and screw it into the nut 51 on the reinforcing rib 20b. This avoids the phenomenon of uneven, wavy installation surfaces caused by direct fixing with self-drilling screws, further improving installation stability, making the installation flatter, and preventing air leakage. At the same time, the force of the bolt on the reinforcing rib can effectively strengthen the strength of the panel connection, making fixing more convenient. Example

[0050] This embodiment takes structure C as an example. Structure C combines the features of structures A and B. The length and width of the first panel 11c are the same as the length and width of the second panel 12c, but they are misaligned. That is, at least one side of the first panel 11c protrudes relative to the side of the second panel 12c. The main difference is that the mounting structure of at least one side is the same as the mounting structure of structure A, while the mounting structures of the other sides are the same as the mounting structure of structure B, so as to provide greater adaptability for different box assembly needs.

[0051] A second aspect of this utility model provides a concealed frame enclosure. The enclosure mainly comprises a metal skeleton 70 and at least four of the aforementioned anti-cold bridging foam boards. The skeleton 70 is typically welded or assembled from metal profiles (such as square or rectangular tubes) made of aluminum alloy, galvanized steel, etc., forming the basic frame of the enclosure.

[0052] During installation, the side of the anti-cold bridge foam board with the stepped joint 13 faces the frame body 70. Bolts 50 are used to directly lock the foam board to the corresponding positions of the columns, beams, etc., of the frame body 70 through the through holes in the joint 13, internal reinforcing ribs, and / or spacers. Because the joint 13 is a structure with the panel protruding outwards, after installation, the main insulation part of the foam board completely covers the frame body 70, making the frame body hidden inside the panel. From the outside of the enclosure, only a flat, continuous panel surface is visible, with no exposed frame; from the inside of the enclosure, the frame body is also concealed by the second panel 12. This eliminates heat transfer caused by direct exposure of the metal frame, fundamentally avoiding condensation at the panel edges due to the cold bridge effect, significantly improving overall insulation performance, and resulting in a more aesthetically pleasing overall appearance.

[0053] To further enhance the heat conduction blocking effect, a sponge strip 80 is pre-attached or padded at the contact point between the inner side of the second panel 12 of the anti-cold bridge foam board and the frame 70. The sponge strip 80 is compressed when the bolts are tightened, which can effectively fill the small assembly gap between the panel and the frame, while preventing the frame 70 from directly contacting the panel, thus improving the thermal insulation performance.

[0054] Specific installation example: Taking the right-angle splicing of panel A as a side panel and a top panel as an example, firstly, the anti-cold bridging foam panel serving as the side panel is vertically installed on the side of the frame 70. At this time, the first bend 111a and the second bend 121a of the mating portion 13a on the top edge of the side panel cover the left vertical surface and the lower surface of the top beam square tube of the frame 70. Then, the anti-cold bridging foam panel serving as the top panel is horizontally installed on the top of the frame 70. The first bend 111a and the second bend 121a of the mating portion 13a on the side of the top panel cover the upper surface and the right vertical surface of the same top beam square tube. Finally, the two mating portions are fastened to the nuts 51 of the beam with bolts 50. After installation, the joints of the two foam panels fit together perfectly, completely enclosing and concealing the underlying frame beams. The heat inside the enclosure is blocked by the anti-cold-bridge foam panels, effectively preventing heat conduction and improving insulation performance. Furthermore, no condensation occurs on the outer edges of the panels, resulting in a more aesthetically pleasing overall appearance. In some embodiments, to further enhance sealing and insulation performance, sealant 80 is applied to the joints between the two panels inside the enclosure, achieving multiple layers of sealing protection.

[0055] Taking the splicing of Type A and Type B panels as continuous sides as an example, firstly, the Type A anti-cold bridging foam panel, serving as the right front end, is vertically installed on the side of the frame 70. At this time, the first bend 111a and the second bend 121a of the side joint 13a on the right side of this panel cover the outer surface of the square tube of the vertical beam on the side of the frame 70 and the left side facade. Then, the Type B anti-cold bridging foam panel, serving as an extension panel, is vertically installed on the left side of the Type A panel. The first bend 111a and the second bend 121a of the joint 13a on the left side of the Type A anti-cold bridging foam panel are spliced ​​onto the first bend 111b and the second bend 121b of the joint 13b on the right side of the Type B anti-cold bridging foam panel. Finally, bolts 50 are used to fasten these two joints to the nuts 51 of the reinforcing rib 20b. In some embodiments, to further improve the sealing and insulation performance, sealant 80 is applied to the joint between the two panels inside the box to achieve multiple sealing protections.

[0056] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A type of anti-cold bridging foam board, characterized in that, include: A first panel and a second panel are arranged horizontally opposite each other, with the first panel located on the outside and the second panel located on the inside. At least one side of one panel protrudes outward relative to the side of the other panel to form a stepped mating part. The mating part is used for splicing between adjacent foam boards and / or for installation connection with external structures. At the docking portion, a reinforcing rib is provided on the inner side of the protruding panel; At the docking portion, a spacer strip is provided between the first panel and the second panel to block heat conduction between them; A polyurethane foam layer is filled between the first panel and the second panel.

2. The anti-cold bridging foam board according to claim 1, characterized in that, The first panel has a first bend that folds inward at the mating portion, and the second panel has a second bend that bends inward vertically at the mating portion.

3. The anti-cold bridging foam board according to claim 2, characterized in that, One end of the spacer bar is provided with a receiving groove for the first bent portion and / or the end of the reinforcing rib to be inserted, and the other end is provided with a slot for the second bent portion to be inserted.

4. The anti-cold bridging foam board according to claim 3, characterized in that, The receiving slot and the card slot are arranged perpendicular to each other.

5. The anti-cold bridging foam board according to claim 3, characterized in that, The slot has an inclined opening on one side and a support for supporting the reinforcing rib on the other side.

6. The anti-cold bridging foam board according to claim 1, characterized in that, The connecting part and the reinforcing rib are respectively provided with through holes for bolts to pass through.

7. The anti-cold bridging foam board according to claim 6, characterized in that, The mating part and / or the reinforcing rib are provided with nuts that mate with the bolts.

8. The anti-cold bridging foam board according to claim 7, characterized in that, A decorative rubber plug is provided on the outside of the through hole of the docking part.

9. A concealed frame box structure, characterized in that, It includes four or more anti-cold bridge foam boards as described in any one of claims 1-8, and a frame for mounting the anti-cold bridge foam boards, wherein the mating portion of the foam boards covers the outside of the frame, so that the frame is hidden inside the foam boards.

10. The invisible frame box structure according to claim 9, characterized in that, A sponge strip is provided between the foam board and the frame.

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