Suitable for assembled energy-saving building envelope unit wallboard joint heat insulation structure

Abstract

The utility model discloses a kind of suitable for assembled energy-saving building outer envelope unit wallboard joint heat insulation structure, belong to near zero energy consumption building field.The joint heat insulation structure is used to connect the vertical and horizontal joint of assembled unit wallboard.Each wallboard is provided with groove cavity around, and inner fixed section bar, and sealing structure is arranged in the gap between section bar and cavity.Three grooves are arranged on section bar along length direction.A glue strip is arranged in the first groove of upper and lower two section bars in horizontal joint structure, and B glue strip is arranged in the second groove;B glue strip includes B glue strip main part and extension, wherein B glue strip main part is inserted into the groove of section bar;Extension extends from B glue strip main part to the end away from B glue strip main part;A glue strip is arranged in the first groove and third groove of left and right two section bars in vertical joint structure;Two section bars are fixedly connected by convex slot and concave slot.The structure realizes the fine, stable connection of wallboard joint, improves air tightness, water tightness, and is simple to operate.

Description

Technical Field

[0001] This utility model belongs to the field of near-zero energy buildings, specifically relating to a heat insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels. Background Technology

[0002] In the construction of near-zero energy buildings, the joint treatment of prefabricated exterior wall panels is a crucial step, playing a decisive role in the building's energy efficiency and overall performance. Currently, common joint treatment methods in the construction industry include: filling with high-performance sealing materials, constructing structural columns, applying airtight membranes, using non-shrink epoxy structural adhesives, and filling with high-efficiency insulation materials. While these methods have achieved some success, they still reveal numerous problems, such as difficulty in fully guaranteeing airtightness at the joints, compromised insulation performance, unsatisfactory waterproofing, ineffective blocking of heat conduction and transfer, and high technical difficulty due to excessively high construction precision requirements. These problems not only weaken the building's overall energy efficiency and durability but also potentially reduce living comfort.

[0003] Furthermore, existing materials and processes fail to meet the standards for exterior wall joint specifications in key areas such as wind tightness, air tightness, water tightness, and thermal conductivity for ultra-low energy or near-zero energy buildings. For the cross-joints of prefabricated exterior wall panels, it is necessary to balance the requirements of waterproofing, sealing, and blocking heat transfer, while also considering the convenience and reliability of structural assembly. However, current technologies cannot comprehensively meet these requirements. Therefore, there is an urgent need to design a more scientific and reasonable prefabricated exterior wall panel cross-joint assembly structure to facilitate the deeper development of near-zero energy buildings. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a heat insulation structure for the joints of prefabricated energy-saving building exterior wall panels.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] This utility model provides a heat insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels. The heat insulation structure includes a vertical joint structure and a horizontal joint structure. The horizontal joint structure is used to connect two adjacent prefabricated unit wall panels, and the vertical joint structure is used to connect two adjacent prefabricated unit wall panels, one on the left and one on the right. Each prefabricated unit wall panel has a groove cavity on all four sides.

[0007] Each prefabricated unit wall panel has a profile fixed in its groove cavity; a sealing structure is provided for the gap between the groove cavity and the profile; a first groove, a second groove, and a third groove are formed along the length of each profile for placing adhesive strips; in the horizontal splicing structure, an A adhesive strip is arranged along the length of the first and third grooves of the upper and lower profiles, and a B adhesive strip is arranged in the second groove; the B adhesive strip includes a main body and an extension, wherein the main body of the B adhesive strip is inserted into the groove of the profile; the extension extends from the main body of the B adhesive strip to the end away from the main body of the B adhesive strip; in the vertical splicing structure, an A adhesive strip is arranged along the length of the first and third grooves of the left and right profiles, and a B adhesive strip is arranged in the second groove; a foam sealing structure is also provided at the gap between two adjacent prefabricated unit wall panels;

[0008] The two profiles are fixedly connected to the wall; one side of the convex slot and the concave slot are respectively fixedly connected to the profiles fixed in the groove cavity of the two prefabricated unit wall panels, and the protruding part of the other side of the convex slot is inserted into the concave slot.

[0009] Preferably, in the B-type adhesive strip, the extension portion is inclined outward from the main body of the B-type adhesive strip to prevent water and air from flowing along the extension portion to the main body of the B-type adhesive strip.

[0010] Preferably, the outer periphery of the main body of both the A and B adhesive strips has a serrated structure facing the direction of water and air seepage.

[0011] Furthermore, the outer periphery of the main body of the A and B adhesive strips is also provided with a protruding structure for locking the groove in the profile.

[0012] Preferably, one side of the convex slot and the concave slot are fixedly connected to the profile by bolts.

[0013] Preferably, at least two protruding and recessed slots are provided between two adjacent prefabricated unit wall panels for fixing.

[0014] Preferably, the profile is fixedly connected to the main keel of the prefabricated unit wall panel by means of screws.

[0015] Preferably, a damping pad is provided between the profile and the main keel of the wall panel.

[0016] Preferably, the sealing structure uses a closed-cell foamed elastic strip; the foamed sealing structure uses a foamed sealant and a weather-resistant sealant.

[0017] As a preferred option, a vapor barrier membrane is also installed at the joint on the inner side of two adjacent prefabricated unit wall panels.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] (1) The joint structure provided by this utility model abandons the traditional joint sealing method and uses two different adhesive strips to achieve more precise, stable and efficient joint treatment. This utility model avoids the cumbersome and time-consuming traditional sealing process, greatly improves construction efficiency and reduces construction costs.

[0020] (2) The two types of adhesive strips provided by this utility model have different shapes and appearances. By being staggered in the profile, they perform excellently in terms of air tightness, water tightness, and wind tightness, preventing air, moisture, and wind penetration. This ensures a stable and dry internal environment for the building and also achieves complete building insulation, effectively blocking heat conduction.

[0021] (3) In this utility model, the use of convex and concave slots between the two prefabricated unit wall panels guides the installation of the adhesive strip, making the overall splicing structure installation process simple and convenient. The convex and concave slots also give the external wall panels strong resistance to displacement, maintaining the stability and safety of the building structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the horizontal seam provided in this embodiment;

[0023] Figure 2 This is a schematic diagram of the vertical seam provided in this embodiment;

[0024] Figure 3 This is a schematic diagram of the groove cavity in the transverse splice structure of this embodiment;

[0025] Figure 4 This is a schematic diagram of the profile installation in the transverse splice structure of this embodiment;

[0026] Figure 5 for Figure 1 Enlarged view of a portion of point A in the middle;

[0027] Figure 6 for Figure 2 Enlarged view of a section at point B in the middle;

[0028] Figure 7 This is a schematic diagram of the profile provided in this embodiment;

[0029] Figure 8 This is a schematic diagram of the A-type adhesive strip provided in this embodiment;

[0030] Figure 9 This is a schematic diagram of the B-type adhesive strip provided in this embodiment;

[0031] Figure 10 This is a schematic diagram of the connection between the convex slot and the concave slot provided in this embodiment;

[0032] In the diagram: Profile 1, First Groove 101, Second Groove 102, Third Groove 103, A Rubber Strip 2, B Rubber Strip 3, Main Body of B Rubber Strip 301, Extension 302, Protruding Slot 4, Recessed Slot 5, Groove Cavity 6, Damping Pad 7, Vapor Barrier Membrane 8, Main Keel of Wall Panel 9, Foamed Sealing Structure 10, Sealing Structure 11, Building Floor Slab 12, Frame Steel Beam 13, Structural Hanging Plate 14, Structural Hanging Plate Connecting Support 15. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0034] In the description of this utility model, it should be understood that the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one of those features.

[0035] like Figure 1 and Figure 2 As shown, as a preferred embodiment of this utility model, this embodiment provides a heat insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels. This joint insulation structure includes a vertical joint structure and a horizontal joint structure. The horizontal joint structure connects two adjacent prefabricated unit wall panels, while the vertical joint structure connects two adjacent prefabricated unit wall panels. The prefabricated unit wall panels in this utility model are all prefabricated finished wall panels manufactured in a factory. These wall panels generally have an outer decorative layer, an outer sheet, insulation material, sound insulation felt, and an inner sheet from the outside in. This utility model does not limit the specific structure or material of each layer of the wall panel. The inner side of the prefabricated unit wall panel is fixedly connected to structural hanging plate connecting supports 15 pre-installed on the building floor slab 12 at multiple locations via structural hanging plates 14. The inner side of the prefabricated unit wall panel is also fixedly connected to structural hanging plate connecting supports 15 pre-installed on the frame steel beam 13 via structural hanging plates 14.

[0036] like Figure 3As shown, each prefabricated unit wall panel provided in this embodiment has a recessed cavity 6 around its four sides. An insulating profile 1 is fixed within the recessed cavity 6 of each prefabricated unit wall panel. Each profile 1 has a first recess 101, a second recess 102, and a third recess 103 along its length for placing adhesive strips, as detailed below. Figure 7 As shown.

[0037] like Figure 4 As shown, in this embodiment, the portion of the profile 1 without the groove is fixedly connected to the main keel 9 of the prefabricated unit wall panel via screws. A damping pad 7 is also provided between the profile 1 and the main keel 9. The damping pad 7 is used to prevent bimetallic oxidation or corrosion. Furthermore, due to manufacturing and installation errors, there may be gaps between the profile 1 and the main keel 9 in the building structure; the damping pad 7 can fill these gaps, maintaining close contact with both the profile 1 and the main keel 9. This invention does not limit the specific type of damping pad 7; those skilled in the art can select the type of damping pad 7 according to specific circumstances.

[0038] Figure 5 for Figure 1 A magnified view of section A, which is also a schematic diagram of the nodes in the horizontal seam structure. (See attached image.) Figure 5 As shown, in the transverse splicing structure, the upper and lower profiles 1 are aligned vertically, so that the first groove 101, the second groove 102, and the third groove 103 in the profile 1 are respectively arranged opposite each other, forming a cavity for placing the adhesive strip. In the transverse splicing structure, the first groove 101 and the third groove 103 of the profile 1 are arranged with adhesive strip A 2 along their length, and the second groove 102 is arranged with adhesive strip B 3.

[0039] A schematic diagram of the adhesive strip 2 (A) provided in this embodiment is shown below. Figure 8 As shown in the diagram, the schematic diagram of adhesive strip 3 (B) is as follows: Figure 9 As shown. The B-type adhesive strip 3 includes a main body portion 301 and an extension portion 302, wherein both ends of the main body portion 301 are inserted into the second groove 102 of the profile 1. The extension portion 302 extends from the main body portion 301 away from it. Specifically, the B-type adhesive strip 3 is inserted into the second groove 102 of the profile 1, and the extension portion 302 extends outward, contacting the upper surface of the underlying structure. Preferably, the extension portion 302 of the B-type adhesive strip 3 is inclined outward from the main body portion 301 to prevent water and air from flowing along the extension portion 302 towards the main body portion 301.

[0040] Figure 6 for Figure 2 A magnified view of section B, which is a schematic diagram of the nodes in the vertical splicing structure. (See attached image.) Figure 6As shown, in the vertical splicing structure, the two profiles 1 on the left and right are aligned, so that the first groove 101, the second groove 102, and the third groove 103 in the profile 1 are respectively arranged opposite each other, forming a cavity for placing the adhesive strip. In the vertical splicing structure, the A adhesive strip 2 is arranged along the length of the first groove 101 and the third groove 103 of the two profiles 1 on the left and right, and the B adhesive strip 3 is arranged along the length of the second groove 102.

[0041] Both the A-strip 2 and the B-strip main body 301 have a serrated structure on their periphery facing the direction of water and air seepage. This design can further improve the water tightness and air tightness of the strips, block heat conduction, and significantly improve the thermal insulation performance. The A-strip 2 and the B-strip main body 301 also have a raised structure on their periphery for locking the groove in the profile 1.

[0042] This embodiment, by setting up rubber strips A2 and B3, creates a structure with three overlapping rubber strips protecting the weakest points of the cross-joint, resulting in better airtightness and watertightness. Rubber strips A2 and B3 are generally selected from architectural sealing strips, such as ethylene propylene diene monomer (EPDM), thermoplastic vulcanizate (TPV), and nitrile rubber.

[0043] Before installing adhesive strip A or adhesive strip B, it is necessary to first fix the two profiles 1 on the left and right sides of the vertical joint structure or the two profiles 1 on the top and bottom of the horizontal joint structure. The structural diagrams of the protruding slot 4 and the recessed slot 5 are shown below. Figure 10 As shown. One side of the convex slot 4 and the concave slot 5 are respectively fixedly connected to the profile 1 fixed in the groove cavity 6 of the two prefabricated unit wall panels, and the protruding part of the other side of the convex slot 4 is inserted into the concave slot 5. In this embodiment, one side of the convex slot 4 and the concave slot 5 are fixedly connected to the profile 1 by screw connection. At least two fixing structures of convex slot 4 and concave slot 5 are provided between two adjacent prefabricated unit wall panels. This utility model does not limit the specific number of convex slot 4 and concave slot 5, and those skilled in the art can make adaptive selection according to the specific size of the prefabricated unit wall panels. The cooperation of the convex slot 4 and the concave slot 5 plays a guiding role for the subsequent on-wall installation of the prefabricated unit wall panels, so that the two wall panels are connected as one, which facilitates construction and installation, and can enhance the overall strength of the overall building exterior wall panel.

[0044] To further improve airtightness, a sealing structure 11 is provided between the groove cavity 6 and the short side of the profile 1. A foam sealing structure 10 is also provided at the joint between two adjacent prefabricated unit wall panels. In this embodiment, the sealing structure 11 is a closed-cell foam elastic strip. The foam sealing structure 10 uses foamed sealant and weather-resistant sealant. A vapor barrier membrane 8 is also provided at the joint on the inner side of two adjacent prefabricated unit wall panels.

[0045] The above embodiments are merely preferred solutions of this utility model, and are not intended to limit this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A heat insulation structure for the joints of modular wall panels in prefabricated energy-saving buildings, characterized in that, The joint insulation structure includes a vertical joint structure and a horizontal joint structure. The horizontal joint structure is used to connect two adjacent prefabricated unit wall panels, and the vertical joint structure is used to connect two adjacent prefabricated unit wall panels. Each prefabricated unit wall panel has a groove cavity on all four sides (6). Each prefabricated unit wall panel has a profile (1) fixed in its groove cavity (6); a sealing structure (11) is provided between the groove cavity (6) and the profile (1); a first groove (101), a second groove (102), and a third groove (103) for placing adhesive strips are opened along the length of each profile (1); in the transverse splicing structure, an A adhesive strip (2) is arranged along the length of the first groove (101) and the third groove (103) of the upper and lower profiles (1), and a B adhesive strip (3) is arranged in the second groove (102); the B adhesive strip (3) covers... The system includes a B-type adhesive strip main body (301) and an extension (302), wherein the B-type adhesive strip main body (301) is inserted into the groove of the profile (1); the extension (302) extends from the B-type adhesive strip main body (301) to the end away from the B-type adhesive strip main body (301); in the vertical splicing structure, the A-type adhesive strip (2) is arranged in the first groove (101) and the third groove (103) of the two profiles (1) on the left and right sides, and the B-type adhesive strip (3) is arranged in the second groove (102); a foam sealing structure (10) is also provided at the gap between two adjacent prefabricated unit wall panels; The two profiles (1) are fixedly connected to the wall; one side of the convex slot (4) and the concave slot (5) are fixedly connected to the profile (1) fixed in the groove cavity (6) of the two prefabricated unit wall panels, and the protruding part of the other side of the convex slot (4) is inserted into the concave slot (5).

2. The thermal insulation structure for the joints of modular wall panels in prefabricated energy-saving building envelopes as described in claim 1, characterized in that, In the B-type adhesive strip (3), the extension portion (302) is inclined outward from the main body portion (301) of the B-type adhesive strip to prevent water and air from flowing along the extension portion (302) to the main body portion (301) of the B-type adhesive strip.

3. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 1, characterized in that, The outer periphery of both the A rubber strip (2) and the B rubber strip main body (301) has a serrated structure facing the direction of water and air seepage.

4. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 3, characterized in that, The outer periphery of the main body (301) of the A rubber strip (2) and the B rubber strip is also provided with a protruding structure for locking the groove in the profile (1).

5. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 1, characterized in that, One side of the convex slot (4) and the concave slot (5) are fixedly connected to the profile (1) by bolts.

6. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 1, characterized in that, A fixing structure with at least two protruding slots (4) and recessed slots (5) is provided between two adjacent prefabricated unit wall panels.

7. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 1, characterized in that, The profile (1) is fixedly connected to the main keel (9) of the prefabricated unit wall panel by means of screw connection.

8. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels as described in claim 7, characterized in that, A damping pad (7) is provided between the profile (1) and the main keel (9) of the wall panel.

9. The thermal insulation structure for the joints of prefabricated energy-saving building exterior unit wall panels according to claim 1, characterized in that, The sealing structure (11) uses a closed-cell foamed elastic rubber strip; the foamed sealing structure (10) uses a foamed sealant and a weather-resistant sealant.

10. The thermal insulation structure for the joints of prefabricated energy-saving building envelope unit wall panels according to claim 1, characterized in that, A vapor barrier membrane (8) is also installed at the joint on the inner side of the two adjacent prefabricated unit wall panels.

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