Metal curtain wall system

Abstract

This invention relates to the technical field of building exterior walls, and more particularly to a metal curtain wall system, including a curtain wall unit. The curtain wall unit includes an inner panel, an outer panel, a first filler, and an outer frame module. A U-shaped buckle is recessed towards the filling cavity and its two ends are correspondingly inserted into two connecting slots. The U-shaped buckle is provided in various width models, and the first filler is provided in various thickness models that match the width models of the U-shaped buckle. Its advantage is that by replacing the matching first filler U-shaped buckle, the thickness of the curtain wall unit can be infinitely adjusted, thereby greatly improving its flexibility of use. The inner panel and the outer panel are also connected by the outer frame module. Since the components of the outer frame module that connect the inner panel and the outer panel are first profiles and second profiles that have thermal insulation capabilities, the heat transferred in this part of the heat transfer path is also greatly reduced, thereby improving the thermal insulation performance of the curtain wall unit.

Description

Technical Field

[0001] This invention relates to the technical field of building exterior walls, and more particularly to a metal curtain wall system. Background Technology

[0002] In the field of architecture, with the increasing demands for building energy efficiency, aesthetics, and construction efficiency, traditional curtain wall systems have gradually become unable to meet the design and functional requirements of modern buildings.

[0003] For example, the invention patent with application number CN112554400A discloses a detachable framed metal curtain wall sandwich panel, which includes an insulation board, aluminum profiles and a metal outer panel. The aluminum profiles are arranged around the outer periphery of the side of the insulation board, and two adjacent aluminum profiles are connected by mortise and tenon joints. The metal outer panel is arranged on the front and back sides of the insulation board, and the outer edge of the metal outer panel is provided with a folded edge for connecting the aluminum profiles.

[0004] In this technical solution, adjacent aluminum profiles need to be riveted, which greatly reduces the assembly efficiency of the metal curtain wall; the thickness of the metal curtain wall cannot be flexibly and steplessly adjusted, which limits the flexibility of the metal curtain wall in use. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a metal curtain wall system that solves the technical problems of low assembly efficiency and poor flexibility of use of metal curtain walls in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] In a first aspect, the present invention provides a metal curtain wall system suitable for fixed connection to the exterior wall of a building, comprising a curtain wall unit, the curtain wall unit including an inner panel, an outer panel, a first filler, and an outer frame module, the inner panel and the outer panel being arranged in parallel and spaced apart; the outer frame module is configured in four groups and respectively connected to the edge positions of the inner panel and the outer panel, the inner panel, the outer panel, and the outer frame module forming a rectangular filling cavity of the first filler; the outer frame module includes a first profile, a second profile, and a U-shaped buckle plate, the first profile and the second profile being respectively fixedly connected to the opposite sidewalls of the outer panel and the inner panel, and both of them forming a connecting groove on the side facing the filling cavity, the U-shaped buckle plate being recessed towards the filling cavity and its two ends corresponding to the two connecting grooves; the U-shaped buckle plate is configured in multiple width models, and the first filler is configured in multiple thickness models matching the width model of the U-shaped buckle plate.

[0010] In one technical solution of the present invention, the two ends of the two opposing outer frame modules make way for the two ends of the other two outer frame modules, so that the outer frame modules form a closed rectangular frame.

[0011] In one technical solution of the present invention, the outer edges of both the inner and outer plates extend vertically toward the direction of filling the cavity to form a bent portion, thereby making the inner and outer plates form a box shape with an opening on one side.

[0012] In one technical solution of the present invention, the outer edges of the two opposite bends of the outer panel extend in a direction that approaches each other to form inward portions, so as to cooperate with the bends and the outer panel to form a U-shaped groove for accommodating the second profile; the U-shaped groove corresponds to the second profile of the non-yielding outer frame module.

[0013] In one technical solution of the present invention, a connector for connecting adjacent curtain wall units and a keel fixed to the exterior wall are also included. The connector includes a fixing clip and a connecting bolt. An abutment portion is formed on the adjacent second profile corresponding to the adjacent curtain wall units. The fixing clip can be fixedly connected to the keel by the connecting bolt, and the two sides of the fixing clip abut against the two abutment portions, thereby pressing the curtain wall units closer to the keel.

[0014] In one technical solution of the present invention, a first filling channel is formed between adjacent U-shaped buckles of adjacent curtain wall units; the metal curtain wall system further includes a second filler, which fills the first filling channel; both the first filler and the second filler are made of rock wool.

[0015] In one technical solution of the present invention, a second filling channel communicating with the first filling channel is formed between adjacent outer panels of adjacent curtain wall units; the metal curtain wall system also includes a sealing member that closes the second filling channel.

[0016] In one embodiment of the present invention, the sealing member includes a sealing strip and an inner sealant. The inner sealant is filled in the second filling channel near the inner side of the second filling member, and the sealing strip is filled in the second filling channel away from the outer side of the inner sealant, with the sealing strip embedded in the inner sealant. Alternatively, the sealing member includes a rod and an outer sealant. The rod is filled in the second filling channel near the inner side of the second filling member, and the outer sealant is filled in the second filling channel away from the outer side of the rod.

[0017] In one technical solution of the present invention, heat insulation channels are formed inside both the first profile and the second profile; both the first profile and the second profile are made of glass fiber polyurethane.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of the present invention are as follows: In the metal curtain wall system of the present invention, each outer frame module includes a first profile, a second profile and a U-shaped buckle plate. The two ends of the U-shaped buckle plate are respectively inserted into the connecting grooves on the corresponding first profile and second profile, thereby realizing a reliable connection between the inner and outer profiles, while ensuring the integrity and sealing of the structure.

[0020] The outer frame modules adopt a plug-in assembly method, which has the advantage of simple structure. Furthermore, two opposite outer frame modules can be interchanged, reducing process costs. When assembling the curtain wall units, the outer frame modules can be assembled first, followed by the outer frame modules, inner panels, outer panels, and the first filler, which helps to improve assembly efficiency.

[0021] The U-shaped panels are available in various widths, and the first filler is available in various thicknesses to match the width of the U-shaped panels. This allows for stepless adjustment of the curtain wall unit thickness by replacing the matching first filler U-shaped panels, without changing the inner panel, outer panel, first profile, or second profile. This significantly improves the flexibility of use, enabling highly customized curtain wall system thickness while saving production costs by sharing the inner panel, outer panel, first profile, and second profile.

[0022] Furthermore, since the inner panel is closer to the building's exterior wall than the outer panel, heat from the exterior wall is transferred to the outer panel through the inner panel. Because a first insulator is installed between them, the heat transfer along this path is significantly reduced. The inner and outer panels are also connected by an outer frame module. Since the components connecting the inner and outer panels in the outer frame module are first and second profiles with inherent thermal insulation capabilities, the heat transfer along this path is also greatly reduced, thus improving the thermal insulation performance of the curtain wall unit. Following the same principle, not only is thermal insulation performance improved, but sound insulation performance is also enhanced.

[0023] Furthermore, the structural design of the U-shaped buckle panel gives it strong structural load-bearing capacity, which in turn greatly improves the overall rigidity of the curtain wall unit and reduces the requirements for the wall support structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the axonometric structure of the metal curtain wall system of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of the decomposed structure;

[0026] Figure 3 This is a schematic diagram of the main structure of the metal curtain wall system of the present invention;

[0027] Figure 4 For the present invention Figure 2A schematic diagram of the left-side cross-sectional structure;

[0028] Figure 5 For the present invention Figure 2 A top-view cross-sectional structural diagram;

[0029] Figure 6 This is a schematic diagram of the outer frame module structure of the present invention;

[0030] Figure 7 This is one of the structural schematic diagrams showing the positions of the connector and sealing component of the present invention;

[0031] Figure 8 This is the second structural schematic diagram showing the positions of the connector and sealing component of the present invention.

[0032] [Explanation of Labels in the Attached Image]

[0033] 1: Inner panel;

[0034] 2: Outer panel;

[0035] B. Bending section; C. Retracted section;

[0036] 3: First filler component;

[0037] 4: Outer frame module; 41: First profile; 42: Second profile; 43: U-shaped buckle plate; A: Connecting groove;

[0038] 5: Connecting parts; 51: Fixing clips; 52: Connecting bolts; D: Abutting parts;

[0039] 6. Second filler;

[0040] 7. Sealing components;

[0041] 71. Sealing strip; 74. Inner sealant;

[0042] 72. Bar stock; 73. External sealant;

[0043] 8. Keel. Detailed Implementation

[0044] To better explain and facilitate understanding of this invention, the following description is provided in conjunction with the appendix. Figures 1-8 The present invention will be described in detail through specific embodiments. In this document, directional terms such as "upper" and "lower" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0045] Example 1:

[0046] Reference Figures 1-8The present invention provides a metal curtain wall system suitable for fixed connection to the exterior wall of a building, including a curtain wall unit, the curtain wall unit including an inner panel 1, an outer panel 2, a first filler 3 and an outer frame module 4, the inner panel 1 and the outer panel 2 are arranged in parallel and spaced apart, and the inner panel 1 is closer to the exterior wall of the building than the outer panel 2.

[0047] The outer frame module 4 is set into four groups and connected to the edge positions of the inner plate 1 and the outer plate 2 respectively. The inner plate 1, the outer plate 2 and the outer frame module 4 form a rectangular filling cavity of the first filling element 3.

[0048] The outer frame module 4 includes a first profile 41, a second profile 42 and a U-shaped buckle 43. The first profile 41 and the second profile 42 are respectively fixedly connected to the opposite side walls of the outer panel 2 and the inner panel 1, and both of them form a connecting groove A on the side facing the filling cavity. The U-shaped buckle 43 is recessed in the direction of filling the cavity and its two ends are correspondingly inserted into the two connecting grooves A.

[0049] In this embodiment, the metal curtain wall system is suitable for fixed connection with the exterior wall of a building, and the overall structure is composed of multiple curtain wall units spliced ​​together. Each curtain wall unit includes an inner panel 1, an outer panel 2, a first infill element 3, and four outer frame modules 4. The inner panel 1 and the outer panel 2 are parallel to each other and are set at a certain distance. The inner panel 1 is located on the side closer to the exterior wall of the building, while the outer panel 2 faces the outdoor environment, serving as external protection and decoration.

[0050] Four outer frame modules 4 are installed at the four edges of the curtain wall unit to achieve a stable connection between the inner panel 1 and the outer panel 2, and together they form a closed filling cavity to accommodate the first filler 3. The first filler 3 can be made of thermal insulation, heat insulation or sound insulation materials according to actual needs to enhance the functionality of the curtain wall system.

[0051] Furthermore, each outer frame module 4 includes a first profile 41, a second profile 42, and a U-shaped fastener 43. The first profile 41 is fixedly connected to the surface of the outer panel 2 facing the inner panel 1, while the second profile 42 is fixedly connected to the surface of the inner panel 1 facing the outer panel 2, and the connection can be achieved by adhesive bonding. Both profiles have dedicated connecting grooves A on the side facing the filling cavity. The two ends of the U-shaped fastener 43 are respectively inserted into the connecting grooves A on the corresponding first profile 41 and second profile 42, thereby achieving a reliable connection between the inner and outer profiles while ensuring the integrity and sealing of the structure.

[0052] The outer frame module 4 adopts a plug-in assembly method, which has the advantage of simple structure. In addition, the two opposite outer frame modules 4 can be interchanged, reducing the process cost. When assembling the curtain wall unit, the outer frame module 4 can be assembled first, and then the outer frame module 4, inner panel 1, outer panel 2 and first filler 3 can be assembled, which helps to improve assembly efficiency.

[0053] The U-shaped snap-fit ​​panel 43 is available in various widths, and the first filler 3 is available in various thicknesses to match the width of the U-shaped snap-fit ​​panel 43. Specifically, the width of the U-shaped snap-fit ​​panel 43 refers to the span between its two side pins. In this way, without replacing the inner panel 1, outer panel 2, first profile 41, and second profile 42, the thickness of the curtain wall unit can be infinitely adjusted by replacing the matching first filler 3 U-shaped snap-fit ​​panel 43. This greatly improves its flexibility of use, achieves a high degree of customization of the curtain wall system thickness, and saves production costs by sharing the inner panel 1, outer panel 2, first profile 41, and second profile 42.

[0054] Furthermore, since the inner panel 1 is closer to the building's exterior wall than the outer panel 2, heat from the exterior wall will be transferred to the outer panel 2 through the inner panel 1. Because the first filler 3 is installed between them, the heat transferred in this part of the heat transfer path is greatly reduced. The inner panel 1 and the outer panel 2 are also connected by the outer frame module 4. Since the components of the outer frame module 4 connecting the inner panel 1 and the outer panel 2 are the first profile 41 and the second profile 42, which themselves have thermal insulation capabilities, the heat transferred in this part of the heat transfer path is also significantly reduced, thereby improving the thermal insulation performance of the curtain wall unit. Under the same principle, not only is the thermal insulation performance improved, but the sound insulation performance is also improved.

[0055] Specifically, both the first profile 41 and the second profile 42 have internal heat-insulating channels. These channels not only improve the heat insulation performance of the materials themselves but also help optimize their structural strength. Both the first profile 41 and the second profile 42 are made of glass fiber polyurethane. Polyurethane itself is an excellent thermal insulation material with advantages such as low thermal conductivity, good mechanical strength, and durability. The addition of glass fiber not only improves the dimensional stability of the material but also further enhances its mechanical strength and compressive strength, while maintaining a low thermal conductivity to ensure efficient heat insulation.

[0056] More specifically, the outer panel 2 and the inner panel 1 are produced by specialized equipment, which can achieve stepless adjustment of the width range from 100mm to 2200mm and the length range from 100mm to 12000mm, thereby breaking through the size limitation of the largest unit metal curtain wall product and improving the applicability of the metal curtain wall system.

[0057] Example 2:

[0058] Reference Figure 1 and Figure 2 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0059] The two ends of the two opposing outer frame modules 4 make way for the two ends of the other two outer frame modules 4, so that the outer frame modules 4 form a closed rectangular frame.

[0060] In this embodiment, the two opposing outer frame modules 4 are designed to give way at both ends, so that the ends of the other two outer frame modules 4 located on adjacent sides can be smoothly inserted and structurally closed, thereby forming a stable and complete rectangular frame structure. This not only ensures the tight splicing and geometric accuracy between the outer frame modules 4 around the curtain wall unit, but also effectively improves the structural rigidity and stability of the entire frame system.

[0061] In addition, this closed rectangular frame structure, while meeting the mechanical performance requirements, can also provide a precise positioning foundation for the subsequent assembly of inner panel 1, outer panel 2 and filler, further ensuring the overall flatness, sealing and appearance consistency of the curtain wall unit, which is of great significance for improving the engineering quality and long-term performance of the curtain wall system.

[0062] Example 3:

[0063] Reference Figures 1-8 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0064] The outer edges of both the inner plate 1 and the outer plate 2 extend vertically toward the direction of filling the cavity to form a bent portion B, thereby making the inner plate 1 and the outer plate 2 form a box shape with an opening on one side on opposite sides.

[0065] In this embodiment, by vertically bending the edges of the inner panel 1 and the outer panel 2, the overall rigidity and bending resistance of the panels are increased, which helps to resist the influence of external wind pressure and other loads on the curtain wall unit and improves the stability of the system.

[0066] The bending section B fits tightly with the outer frame module 4, which can effectively prevent external moisture and air from entering the module through the joint, enhancing the waterproof and airtight performance of the curtain wall unit and playing an important role in improving the overall energy efficiency of the building.

[0067] The resulting box-like structure provides clearer boundary definitions for the curtain wall units, facilitating precise docking and positioning of components during on-site construction and reducing problems caused by assembly errors.

[0068] The neat and consistent bending design can make the curtain wall surface smoother and flatter, enhancing the overall aesthetics of the building's appearance and conforming to the trend of modern architectural design pursuing exquisite details.

[0069] Although it adds a bending step, this design actually simplifies the subsequent assembly process because it reduces the need for additional sealing materials or complex positioning components, thereby lowering production costs and speeding up construction.

[0070] Example 4:

[0071] Reference Figures 1-8 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0072] The outer edges of the two opposing bends B of the outer panel 2 extend toward each other to form an inwardly tapered portion C, which cooperates with the bends B and the outer panel 2 to form a U-shaped groove for accommodating the second profile 42; the U-shaped groove corresponds to the second profile 42 of the non-yielding outer frame module 4.

[0073] In this embodiment, by forming a U-shaped groove to accommodate the second profile 42, it is ensured that the second profile 42 can fit tightly against the interior of the outer panel 2, thereby effectively blocking the heat conduction path and further improving the thermal insulation performance of the curtain wall unit. Simultaneously, since the second profile 42 is fixed within the U-shaped groove, its position is more stable and less prone to displacement or damage due to external factors. Furthermore, it provides more precise positioning for the assembly process of the corresponding second profile 42. During installation, simply embedding the second profile 42 accurately into the U-shaped groove is sufficient to complete the fixing, greatly simplifying the assembly steps and further improving work efficiency.

[0074] The combined use of the U-shaped channel and the second profile 42 not only enhances the structural strength of the curtain wall unit itself, but also further improves the system's sealing performance, preventing air and moisture from penetrating into the building interior.

[0075] Example 5:

[0076] Reference Figures 1-8 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0077] The metal curtain wall system also includes connectors 5 that connect adjacent curtain wall units, and keels 8 that are fixed to the exterior wall;

[0078] The connector 5 includes a fixing clip 51 and a connecting bolt 52;

[0079] Each adjacent second profile 42 corresponding to an adjacent curtain wall unit forms an abutment portion D. The fixing clip 51 can be fixedly connected to the keel 8 by connecting bolts 52, and the two sides of the fixing clip 51 abut against the two abutment portions D, thereby pressing the curtain wall unit closer to the keel 8.

[0080] In this embodiment, the metal curtain wall system also includes connecting components for connecting adjacent curtain wall units, and a keel 8 structure fixedly installed on the building's exterior wall. The abutment portion D serves as a positioning and load-bearing structure, providing a stable support surface for the fixing clip 51. The fixing clip 51 is firmly fixed to the keel 8 by connecting bolts 52, and its two sides respectively make close contact with the abutment portions D on two adjacent second profiles 42, forming an effective force transmission path. This allows the fixing clip 51 to not only achieve a stable connection with the keel 8, but also to apply pressure towards the keel 8 to the two adjacent curtain wall units, thereby pressing the entire curtain wall unit tightly against the exterior wall, ensuring the stability and wind pressure resistance of the overall system, making it particularly suitable for high-rise buildings or buildings with large wind loads.

[0081] Specifically, the abutment part D and the fixing member 51 can be configured as a matching interlocking structure, such as a matching concave-convex structure, to further improve the positioning accuracy and the stability of the abutment part D and the fixing member 51 after they are engaged.

[0082] Example 6:

[0083] Reference Figures 1-8 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0084] A first filling channel is formed between adjacent U-shaped buckle panels 43 of adjacent curtain wall units;

[0085] The metal curtain wall system also includes a second filler 6, which fills the first filler channel;

[0086] Both the first filler 3 and the second filler 6 are made of rock wool.

[0087] In this embodiment, the first filler 3 and the second filler 6 work together to form a complete filling system. The second filler 6 effectively reduces heat transfer within the first filling channel, improving the thermal insulation and soundproofing performance of the metal curtain wall system. Simultaneously, it prevents air, rainwater, and impurities from contacting the connecting components through the joints between curtain wall units, effectively ensuring the service life of the connecting components and improving the system's airtightness. The filled joint area is smoother and more uniform, contributing to a clean and aesthetically pleasing overall appearance of the curtain wall. Rock wool filling can, to a certain extent, buffer minor displacements between adjacent units, thereby improving the system's adaptability to external loads such as wind pressure and temperature changes.

[0088] Example 7:

[0089] Reference Figures 1-8 In addition to possessing all the technical solutions of the above embodiments, the embodiments of the present invention further possess the following technical solutions:

[0090] A second filling channel, which communicates with the first filling channel, is formed between adjacent outer panels 2 of adjacent curtain wall units;

[0091] The metal curtain wall system also includes a sealing element 7, which seals the second filling channel.

[0092] In this embodiment, the second filling channel not only connects to the first filling channel but also further enhances the system's airtightness through the sealing element 7, thereby further improving the thermal insulation and heat insulation capabilities of the metal curtain wall system. Simultaneously, it helps stabilize the connection between adjacent curtain wall units, reducing displacement or deformation caused by temperature changes or wind pressure, and enhancing the overall structural stability of the curtain wall system.

[0093] The sealing element 7 includes a sealing strip 71 and an inner sealant 74. The inner sealant 74 fills the inner side of the second filling channel near the second filling element 6, and the sealing strip 71 fills the outer side of the second filling channel away from the inner sealant 74, with the sealing strip 71 embedded in the inner sealant 74; or,

[0094] The sealing component 7 includes a rod 72 and an outer sealant 73. The rod 72 is filled in the inner part of the second filling channel near the second filler 6, and the outer sealant 73 is filled in the outer part of the second filling channel away from the rod 72.

[0095] In this embodiment, the sealing element 7 can be used in one of the following two ways to achieve good performance.

[0096] In the first method, the sealing component 7 includes a sealing strip 71 and an inner sealant 74. One end of the sealing strip 71 is designed to embed into the inner sealant 74, fitting tightly to it to create a continuous sealing barrier from the inside out. The other part of the sealing strip 71 is inserted into a second filling channel to externally seal the gap between adjacent outer panels 2. This structure not only improves the airtightness and watertightness of the entire joint area but also absorbs, to some extent, minor displacements caused by temperature changes or wind loads, preventing seal failure.

[0097] In the second method, the sealing element 7 is composed of a rod 72 and an outer sealant 73. The rod 72 is positioned on the side of the second filling channel near the second filler 6, serving as a backing material for support and containment. The outer sealant 73 fills the outer portion of the second filling channel, covering the rod 72 to form an elastic sealing layer. The rod 72 can be made of a material with good weather resistance and compression resilience, while the outer sealant 73 is preferably made of silicone or polyurethane, possessing excellent aging resistance, waterproofing, and adhesion properties. This composite structure of "backing + sealing" effectively prevents rainwater penetration and air leakage, and enhances the insulation effect and overall durability of the joint.

[0098] With the sealing element 7 in this embodiment, the inner sealant 74 and outer sealant 73 have a larger contact area with the corresponding sealing strip 71 and rod 72, thus making it less likely for the inner sealant 74 and outer sealant 73 to drip and contaminate the exterior surface. Furthermore, if the first embodiment of the sealing strip 71 is adopted, the inner sealant 74 is still placed inside the sealing strip 71, further reducing the likelihood of the aforementioned problems.

[0099] Furthermore, regardless of the type of sealing component 7, it does not rely solely on sealant, but rather utilizes a sealing strip 71 and an inner sealant 74, or a rod 72 and an outer sealant 73. Therefore, it is less prone to aging, which can solve the problem of sealing aging and failure that occurs after a long period of use in traditional curtain wall structures, and further avoid the problem of sealant dripping and contaminating the exterior surface.

[0100] The two sealing structures mentioned above can be flexibly selected according to actual project needs: the first option is easy to install and has high construction efficiency, and is suitable for assembly scenarios with a high degree of standardization; the second option has higher sealing reliability and the ability to adapt to complex environments, and is suitable for building projects with more stringent requirements for waterproofing and airtightness.

[0101] It can be understood that, except for conflicting parts, the above embodiments 1-7 can be freely combined to form other embodiments of the present invention.

[0102] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0103] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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 invention according to the specific circumstances.

[0104] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0105] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0106] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A metal curtain wall system, suitable for fixed connection to the exterior wall of a building, characterized in that: The curtain wall unit includes an inner panel (1), an outer panel (2), a first filler (3), and an outer frame module (4), wherein the inner panel (1) and the outer panel (2) are arranged in parallel at intervals. The outer frame module (4) is set into four groups and respectively connects the edge positions of the inner plate (1) and the outer plate (2). The inner plate (1), the outer plate (2) and the outer frame module (4) form a rectangular filling cavity of the first filling element (3). The outer frame module (4) includes a first profile (41), a second profile (42) and a U-shaped buckle plate (43). The first profile (41) and the second profile (42) are respectively fixedly connected to the opposite side walls of the outer plate (2) and the inner plate (1), and both of them form a connecting groove (A) on the side facing the filling cavity. The two ends of the U-shaped buckle plate (43) in the width direction are inserted into the connecting groove (A) of the first profile (41) and the second profile (42). The U-shaped buckle (43) is configured with multiple widths, and the first filler (3) is configured with multiple thicknesses that match the width of the U-shaped buckle (43). In the four sets of outer frame modules (4), the two ends of the two opposing sets of outer frame modules (4) make way for the ends of the other two sets of outer frame modules (4) so ​​that the outer frame modules (4) form a closed rectangular frame. The outer edges of the inner plate (1) and the outer plate (2) extend vertically toward the direction of the filling cavity to form a bent portion (B), thereby making the inner plate (1) and the outer plate (2) form a box shape with an opening on one side of opposite sides; The outer edges of the two opposing bends (B) of the outer plate (2) extend toward each other to form inwardly tapered portions (C) to cooperate with the bends (B) and the outer plate (2) to form a U-shaped groove for accommodating the second profile (42); The U-shaped groove corresponds to the second profile (42) of the outer frame module (4) that does not give way.

2. The metal curtain wall system as described in claim 1, characterized in that: It also includes connectors (5) that connect adjacent curtain wall units, and keels (8) fixed to the exterior wall. The connector (5) includes a fixing clip (51) and a connecting bolt (52); Each adjacent second profile (42) corresponding to an adjacent curtain wall unit forms an abutment portion (D). The fixing clip (51) can be fixedly connected to the keel (8) by the connecting bolt (52), and the two sides of the fixing clip (51) abut against the two abutment portions (D), thereby pressing the curtain wall unit closer to the keel (8).

3. The metal curtain wall system as described in claim 2, characterized in that: A first filling channel is formed between adjacent U-shaped buckles (43) of adjacent curtain wall units; The metal curtain wall system also includes a second filler (6), which fills the first filling channel; Both the first filler (3) and the second filler (6) are made of rock wool.

4. The metal curtain wall system as described in claim 3, characterized in that: A second filling channel is formed between adjacent outer panels (2) of adjacent curtain wall units, which communicates with the first filling channel; The metal curtain wall system also includes a sealing element (7) that closes the second filling channel.

5. The metal curtain wall system as described in claim 4, characterized in that: The sealing element (7) includes a sealing strip (71) and an inner sealant (74). The inner sealant (74) fills the inner side of the second filling channel near the second filling element (6), and the sealing strip (71) fills the outer side of the second filling channel away from the inner sealant (74), and the sealing strip (71) is embedded in the inner sealant (74); or, The sealing component (7) includes a rod (72) and an outer sealant (73). The rod (72) is filled in the inner side of the second filling channel near the second filler (6), and the outer sealant (73) is filled in the outer side of the second filling channel away from the rod (72).

6. The metal curtain wall system as described in claim 1, characterized in that: Both the first profile (41) and the second profile (42) have internal heat insulation channels; Both the first profile (41) and the second profile (42) are made of glass fiber polyurethane.

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