Exterior wall thick thermal insulation structure

Abstract

The utility model relates to the technical field of external wall heat preservation, disclose a kind of external wall thick heat preservation structure, including structural purlin, first heat preservation layer is slidably connected in the structural purlin inner wall, heat preservation material special glue is provided in first heat preservation layer side, second heat preservation layer is provided in the other side of first heat preservation layer, second heat preservation layer is adjacent with first heat preservation layer and is connected with the structural purlin connecting end, vapor barrier is provided in second heat preservation layer side, metal exterior wall board is provided in vapor barrier side, metal exterior wall board is internally provided with connecting assembly.In the utility model, by splitting the heat preservation layer into first and second heat preservation layers, and then laying the second heat preservation layer and adhering it to the first heat preservation layer, the overall thickness of the external wall heat preservation layer is ensured to meet the energy-saving requirement, and the metal exterior wall board has a smooth appearance. The problem of bulging and deformation of the metal exterior wall board caused by the traditional single thick heat preservation layer is solved, and the construction efficiency of the heat preservation board installation is improved.

Description

Technical Field

[0001] This utility model relates to the field of external wall insulation technology, and in particular to a thick external wall insulation structure. Background Technology

[0002] In the field of modern architecture, with the deepening of the green building concept and the continuous upgrading of national energy-saving standards, the performance requirements of external wall insulation systems, as a key link in building energy consumption control, are constantly increasing. Precast metal external wall panel systems, with their advantages of beautiful appearance, high durability, and convenient construction, are increasingly widely used in commercial buildings, industrial plants, and public facilities. "A thick external wall insulation structure" is a technical solution developed to optimize the insulation requirements and structural stability of precast metal external wall panel systems. It aims to balance insulation performance and external wall structural safety through innovative design, solve the technical bottlenecks faced by traditional insulation systems in the application of thick insulation materials, and meet the current dual requirements of buildings for energy saving, appearance, and durability.

[0003] The mechanical structure and technical principle of existing precast metal exterior wall panel systems are as follows: They typically use a reinforced concrete facade as a foundation. First, installation points are pre-set on the wall surface and C-shaped steel purlins are fixed to form the load-bearing framework of the exterior wall. Then, insulation material is laid entirely on the outside of the metal purlins, so that the insulation layer is completely sandwiched between the metal purlins and the metal wall panel. Finally, self-tapping screws or bolts are used as connectors, sequentially threaded through the connection points of the metal wall panel and the insulation layer until they are securely connected to the metal purlins. The mechanical fastening force of the connectors forms a unified exterior wall sealing system with the wall panel, insulation layer, and purlins. Heat insulation is achieved through the thickness of a single insulation layer, thereby achieving the goal of building energy conservation.

[0004] The core problem with existing technologies is that, as society's requirements for building energy conservation continue to increase, the thickness of the insulation material on the inside of metal exterior wall panels needs to be continuously increased to meet higher heat transfer coefficient standards. However, the development of cost-effective, thin, and efficient insulation materials has not yet achieved a significant breakthrough, leading to a continuous increase in the thickness of the insulation layer in practical applications. The structural design of a single insulation layer sandwiched between the metal purlin and the wall panel causes significant uneven stress along the longitudinal direction of the metal exterior wall panel when subjected to the fastening force of the connectors and its own compressive tension. The self-tapping screw or bolt fixing positions are pressed inward due to the fastening force, while areas without connectors bulge due to the outward tension of the insulation layer. This ultimately causes severe bulging and deformation of the metal exterior wall panel, which not only damages the integrity of the exterior wall appearance but also leads to the failure of the sealing system, reducing the durability and applicability of the exterior wall.

[0005] Therefore, this application proposes a thick-wall thermal insulation structure to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a thick-wall insulation structure, which aims to solve the problem that the thickness of the insulation material on the inner side of the metal exterior wall panel is constantly increasing due to the increasing social requirements for building energy conservation, which in turn causes the metal exterior wall panel to bulge and deform.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A thick-wall thermal insulation structure includes structural purlins. A first insulation layer is slidably connected to the inner wall of the structural purlins. A special adhesive for thermal insulation material is provided on one side of the first insulation layer, and a second insulation layer is provided on the other side of the first insulation layer. The second insulation layer is adjacent to the first insulation layer and fits the connection end of the structural purlin. A vapor barrier is provided on one side of the second insulation layer, and a metal exterior wall panel is provided on one side of the vapor barrier. A connecting component is provided inside the metal exterior wall panel.

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes self-tapping screws, which are inserted inside the metal exterior wall panel, the second insulation layer, and the first insulation layer, and the self-tapping screws have built-in waterproof gaskets.

[0011] As a further description of the above technical solution:

[0012] The first insulation layer is bonded and fixed to the base wall with special adhesive for insulation materials. The material is glass wool, and the aluminum foil reinforced surface is located on the indoor side. The second insulation layer is sandwiched between the structural purlin and the metal exterior wall panel. The material is glass wool, and the aluminum foil reinforced surface is located on the outdoor side.

[0013] As a further description of the above technical solution:

[0014] The vapor barrier layer has an edge and a pre-reserved ventilation hole at its end. The metal exterior wall panel is assembled from multiple metal plate units, with the ends of the units bent inward to form an L-shaped connection end.

[0015] As a further description of the above technical solution:

[0016] The self-tapping screws are sequentially passed through the L-shaped connecting end of the metal exterior wall panel and the second insulation layer, and then screwed into the connecting end of the structural purlin to secure the metal exterior wall panel, the second insulation layer and the structural purlin.

[0017] As a further description of the above technical solution:

[0018] The structural purlins are H-shaped steel purlins. After the self-tapping screws pass through the L-shaped connecting end of the metal exterior wall panel, their connection position is concealed inside the metal exterior wall panel, forming a concealed fastening structure.

[0019] This utility model has the following beneficial effects:

[0020] In this invention, the insulation layer is divided into a first insulation layer and a second insulation layer. Based on the structural purlins, the first insulation layer is fixed with special adhesive for insulation materials. Then, the second insulation layer is laid and attached to the first insulation layer. A vapor barrier layer is added for moisture protection. Finally, self-tapping screws with waterproof pads are used to fasten the metal exterior wall panel. This achieves the effect of ensuring the overall thickness of the exterior wall insulation layer meets energy-saving requirements and the appearance of the metal exterior wall panel is flat. It solves the problem of bulging and deformation of the metal exterior wall panel caused by the traditional single thick insulation layer and improves the construction efficiency of insulation board installation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a thick-wall thermal insulation structure proposed in this utility model;

[0022] Figure 2 This is a cross-sectional view of a thick-wall thermal insulation structure proposed in this utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Legend:

[0025] 1. Structural purlins; 2. First insulation layer; 3. Insulation material adhesive; 4. Second insulation layer; 5. Vapor barrier; 6. Metal exterior wall panel; 7. Self-tapping screws. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 - Figure 3This utility model provides an embodiment of a thick-wall thermal insulation structure, including structural purlins 1. The structural purlins 1 are generally long strips, and are arranged at intervals along the longitudinal direction of the building's exterior wall. The arrangement intervals strictly correspond to the factory width of the thermal insulation material or an integer multiple thereof, ensuring that no additional cutting is required for subsequent thermal insulation layer installation. Its length direction is consistent with the transverse direction of the exterior wall, which can evenly bear the weight of the outer components. The inner side of the structural purlins 1 forms a slot-like space adapted for the installation of the thermal insulation layer, allowing the first thermal insulation layer 2 to be embedded and achieve a sliding connection. This sliding connection design not only facilitates the fine adjustment of the position of the first thermal insulation layer 2 according to the actual size during installation, but also prevents the first thermal insulation layer 2 from shifting or falling off during long-term use through the limiting effect of the inner wall of the structural purlins 1.

[0028] A first insulation layer 2 is slidably connected to the inner wall of the structural purlin 1. The first insulation layer 2 serves as the inner foundation of the insulation system. One side of it is directly attached to the base wall. To ensure a firm and airtight fit, this side is pre-applied with a special adhesive 3 for insulation materials. The adhesive 3 fully covers the contact area between the first insulation layer 2 and the base wall, using the bonding force of the adhesive layer to stably fix the first insulation layer 2 to the base wall, effectively preventing gaps between the first insulation layer 2 and the wall. The special adhesive 3 is applied to one side of the first insulation layer 2, and a second insulation layer 4 is applied to the other side of the first insulation layer 2. The second insulation layer 4 is adjacent to the first insulation layer 2 and... At the connection end of the purlin 1, the other side of the first insulation layer 2 is closely adjacent to the second insulation layer 4. There is no obvious gap at the joint between the two, forming a continuous insulation transition area. A vapor barrier 5 is provided on one side of the second insulation layer 4. The vapor barrier 5 is fully wrapped and attached to the outer surface of the second insulation layer 4. Its coverage includes not only the main area of ​​the second insulation layer 4, but also extends to the end of the second insulation layer 4. In order to enhance the moisture-proof effect, the vapor barrier 5 has a folded edge treatment at the end of the second insulation layer 4. The edge length extends to the outer edge of the purlin 1. Through the indirect bonding between the edge and the purlin 1, external moisture is blocked from seeping in from the gap at the end of the second insulation layer 4.

[0029] A metal exterior wall panel 6 is installed on one side of the vapor barrier 5. The metal exterior wall panel 6 serves as the outer protective and decorative layer of the exterior wall and is composed of multiple independent metal plate units spliced ​​together. The ends of each metal plate unit are bent to form a regular L-shaped connection end. One side of this L-shaped connection end is a flat surface that fits against the vapor barrier 5 and the second insulation layer 4, while the other side is bent vertically towards the inside of the metal exterior wall panel 6, forming a groove structure that facilitates the concealment of the connecting components. Connecting components are installed inside the metal exterior wall panel 6. The component includes a self-tapping screw 7. When installing the self-tapping screw 7, it is necessary to strictly follow the preset positioning points, cut into the L-shaped connection end groove on the outside of the metal exterior wall panel 6, and pass through the L-shaped connection end of the metal exterior wall panel 6, the vapor barrier layer 5, and the second insulation layer 4 in sequence, and finally tighten it with the connection end of the structural purlin 1. During the tightening process, the thread of the self-tapping screw 7 is tightly engaged with the internal structure of the connection end of the structural purlin 1 to form sufficient tightening force, and firmly fix the metal exterior wall panel 6 and the second insulation layer 4 to the structural purlin 1.

[0030] Self-tapping screws 7 are inserted inside the metal exterior wall panel 6, the second insulation layer 4, and the first insulation layer 2. Each self-tapping screw 7 has a built-in waterproof gasket. The first insulation layer 2 is bonded to the base wall using special insulation material adhesive 3; it is made of glass wool, with aluminum foil reinforcement on the indoor side. The second insulation layer 4 is sandwiched between the structural purlin 1 and the metal exterior wall panel 6; it is also made of glass wool, with aluminum foil reinforcement on the outdoor side. The vapor barrier 5 has an edge trim and pre-drilled ventilation holes at its ends. The metal exterior wall panel 6 consists of multiple... The metal panel units are assembled, with the ends of the units bent inward to form L-shaped connecting ends. Self-tapping screws 7 are sequentially inserted through the L-shaped connecting ends of the metal exterior wall panel 6 and the second insulation layer 4, and then screwed into the connecting ends of the structural purlins 1 to secure them. This is used to connect and fix the metal exterior wall panel 6, the second insulation layer 4 and the structural purlins 1. The structural purlins 1 are H-shaped steel purlins. After the self-tapping screws 7 are inserted through the L-shaped connecting ends of the metal exterior wall panel 6, their connection positions are concealed inside the metal exterior wall panel 6, forming a concealed fastening structure.

[0031] Working principle: When using this thick-wall insulation structure, the structural purlin 1 is first fixed to the outside of the main structure as the load-bearing and positioning base. Then, the first insulation layer 2 is bonded and inserted into the structural purlin 1 using special insulation material adhesive 3, so that the first insulation layer 2 adheres to the base wall surface. Next, the second insulation layer 4 is laid adjacent to the first insulation layer 2 and adhered to it to form a continuous insulation structure. Then, a vapor barrier layer 5 is laid on the outside of the second insulation layer 4 to block water vapor and expel moisture. Finally, the metal exterior wall panel 6 is attached to the outside of the second insulation layer 4. By inserting self-tapping screws 7 through the metal exterior wall panel 6 and the second insulation layer 4 to the structural purlin 1, a tight connection is formed. This layered insulation eliminates the problem of bulging and deformation of the metal exterior wall panel 6 caused by a single thick insulation layer, and also achieves the functions of insulation, waterproofing and structural stability of the exterior wall.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 thick-wall thermal insulation structure, comprising structural purlins (1), characterized in that: The inner wall of the structural purlin (1) is slidably connected to a first insulation layer (2). A special adhesive (3) for insulation material is provided on one side of the first insulation layer (2). A second insulation layer (4) is provided on the other side of the first insulation layer (2). The second insulation layer (4) is adjacent to the first insulation layer (2) and fits the connection end of the structural purlin (1). A vapor barrier layer (5) is provided on one side of the second insulation layer (4). A metal outer wall panel (6) is provided on one side of the vapor barrier layer (5). A connecting component is provided inside the metal outer wall panel (6).

2. The thick-wall thermal insulation structure according to claim 1, characterized in that: The connecting assembly includes a self-tapping screw (7), which is inserted inside the metal outer wall panel (6), the second insulation layer (4) and the first insulation layer (2), and the self-tapping screw (7) has a built-in waterproof gasket.

3. The thick-wall thermal insulation structure according to claim 1, characterized in that: The first insulation layer (2) is bonded and fixed to the base wall surface by special adhesive (3) for insulation materials. The material is glass wool, and the aluminum foil reinforced surface is located on the indoor side. The second insulation layer (4) is sandwiched between the structural purlin (1) and the metal exterior wall panel (6). The material is glass wool, and the aluminum foil reinforced surface is located on the outdoor side.

4. The thick-wall thermal insulation structure according to claim 1, characterized in that: The vapor barrier (5) has an edge and a reserved ventilation hole at the end. The metal exterior wall panel (6) is assembled from multiple metal plate units, and the ends of the units are bent inward to form an L-shaped connection end.

5. The thick-wall thermal insulation structure according to claim 2, characterized in that: The self-tapping screw (7) passes through the L-shaped connecting end of the metal exterior wall panel (6) and the second insulation layer (4) in sequence, and then is screwed and tightened with the connecting end of the structural purlin (1) to connect and fix the metal exterior wall panel (6), the second insulation layer (4) and the structural purlin (1).

6. The thick-wall thermal insulation structure according to claim 2, characterized in that: The structural purlin (1) is an H-shaped steel purlin. After the self-tapping screw (7) passes through the L-shaped connecting end of the metal outer wall panel (6), its connection position is concealed inside the metal outer wall panel (6), forming a concealed fastening structure.

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