Ultralow-energy-consumption building outer wall with curtain wall connecting piece and construction method of ultralow-energy-consumption building outer wall
Through the combination of vacuum insulation panels and rock wool insulation layers, combined with staggered paving and split bolt connections, the thermal bridge effect problem caused by steel embedded parts is solved, and efficient insulation performance of the ultra-low energy consumption building exterior wall is achieved.
Patent Information
- Application Number
- CN202510833074.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2025-09-26
AI Technical Summary
The existing building exterior walls with curtain wall connectors have a thermal bridge effect caused by embedded steel parts, which reduces the thermal performance of the building and cannot meet the requirements of ultra-low energy consumption.
A combination of vacuum insulation panel insulation layer and rock wool insulation layer is used. The connectors are connected to the insulation pads through bolt assemblies made of GFRP material. The connecting steel plates and embedded parts are fixed with split staggered anchors. The vacuum insulation panels are laid with staggered seams to reduce heat transfer.
It effectively improves the thermal performance of the building's exterior wall, avoids direct heat exchange of steel keels and direct heat transfer of bolts, reduces thermal bridge effects, and improves the building's thermal insulation performance.
Smart Images
Figure CN120701017A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of building energy conservation, and in particular relates to an ultra-low energy consumption building exterior wall with a curtain wall connector and a construction method thereof. Background Art
[0002] Ultra-low energy building exterior walls offer significant advantages, including significantly reducing energy consumption, effectively improving indoor comfort, and extending building lifespan. By utilizing high-efficiency insulation materials and optimizing wall construction, they provide excellent thermal insulation performance, meeting the contemporary need for green buildings to reduce carbon emissions. Ultra-low energy building exterior walls are typically composite walls formed by combining a base wall with insulation materials. These insulation utilizes high-efficiency insulation materials to minimize heat loss.
[0003] However, in practice, due to structural requirements of some buildings, steel components, such as curtain wall connectors, must be embedded within the exterior walls. Steel, with its high thermal conductivity, can easily cause thermal bridging, leading to concentrated heat transfer through the steel components. While methods such as installing thermal insulation gaskets were employed during construction to address this issue, the presence of continuous steel components within the wall significantly reduced the thermal performance of the building's exterior walls, making it impossible to achieve ultra-low energy consumption. Summary of the Invention
[0004] In view of this, the present invention aims to propose an ultra-low energy consumption building exterior wall with curtain wall connectors and a construction method thereof, so as to solve the problem of reduced thermal performance of existing building exterior walls with curtain wall connectors due to thermal bridges generated by steel embedded parts.
[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: an ultra-low energy consumption building exterior wall with a curtain wall connector, which includes a rock wool insulation layer, a vacuum insulation panel insulation layer, a bonding layer, a ceramsite base wall, a concrete beam and a connector, wherein the vacuum insulation panel insulation layer is arranged on the outside of the ceramsite base wall, the ceramsite base wall and the vacuum insulation panel insulation layer are connected by the bonding layer, the concrete beam is arranged on the ceramsite base wall, the connector is arranged on the outside of the concrete beam and connected to the concrete beam, and the rock wool insulation layer is arranged on the outside of the vacuum insulation panel insulation layer and connected to the connector.
[0006] Furthermore, the connecting parts include embedded parts, insulation pads, bolt assemblies, connecting steel plates and keels. The embedded parts and connecting steel plates are respectively arranged on the inner and outer sides of the insulation pads. The embedded parts and connecting steel plates are connected to the insulation pads through bolt assemblies. The embedded parts are embedded in the concrete beams. The keels are arranged on the outer side of the connecting steel plates and wrapped in the rock wool insulation layer. One end of the keel passes through to the outer side of the rock wool insulation layer.
[0007] Furthermore, the rock wool insulation layer is composed of two layers of rock wool boards, and a certain distance is left between the boundary of the rock wool board and the keel. An air barrier membrane is arranged between the two layers of rock wool boards. The air barrier membrane is laid at the junction of the connecting steel plate and the vacuum insulation board insulation layer using a right-angle turning coating process. There is a distance between the air barrier membrane and the bolt assembly on the connecting steel plate.
[0008] Furthermore, the thermal insulation layer of the vacuum insulation panel comprises several layers of staggered vacuum insulation panels, each layer is provided with several vacuum insulation panels, and gaps exist between the panels of each layer of the several vacuum insulation panels.
[0009] Furthermore, the embedded parts include an anchor plate and a plurality of anchor rods, the anchor rods are connected to the inner surface of the anchor plate, the anchor rods are embedded in the concrete beam, and one end of the anchor rods is at a certain distance from the inner surface of the concrete beam.
[0010] Furthermore, the thermal insulation pad includes a rigid polyurethane outer frame and a concrete inner core, and the rigid polyurethane outer frame is arranged around the concrete inner core.
[0011] Furthermore, the bolt assembly includes a screw, a nut washer and a nut, and a plurality of screws are embedded alternately on the inner and outer sides of the concrete core. The screws on the inner and outer sides of the concrete core pass through the anchor plate and the connecting steel plate respectively and are fixed by the nut washer and the nut.
[0012] Furthermore, the material of the bolt assembly is GFRP.
[0013] Furthermore, the anchor plate and the connecting steel plate are both provided with through circular holes that match the screw rods.
[0014] The present invention also provides a method for constructing an ultra-low energy consumption building exterior wall with a curtain wall connector, which comprises the following steps: Step 1: Complete the construction of the ceramsite base wall of the required size in the factory, and accurately locate it according to the pre-embedded position and depth obtained by measurement. Place the screw at the planned position in the rigid polyurethane outer frame, pour the internal concrete core and cure it to form the insulation pad; Step 2: After the curing is completed, pass the inner screw embedded in the thermal insulation block through the through-hole on the anchor plate of the embedded part, put on the nut washer, and tighten the nut to complete the connection between the thermal insulation block and the embedded part: Step 3: According to the specific construction plan, place the connected insulation pads and embedded parts in the formwork of the concrete beam, and align the outer surface of the embedded parts with the outer surface of the concrete beam. Cast the concrete beam and maintain it. Step 4: Pass the outer screw embedded in the insulation block through the through-hole on the connecting steel plate, put on the nut washer, and tighten the nut to complete the connection between the connecting steel plate and the insulation block; Step 5: Place the keel at the planned position outside the connecting steel plate and connect the two by welding; Step 6: Position and install the concrete beam with connectors and the ceramsite base wall. Bond the concrete beam and the ceramsite base wall with thermal insulation mortar, and make the inner and outer surfaces of the two flush. Step 7: Bond the vacuum insulation panel insulation layer to the outer surface of the ceramsite base wall and the concrete beam through the adhesive layer; Step 8: Place an air barrier membrane between the two layers of rock wool boards and wrap the rock wool insulation layer around the outside of the keel; Step 9: Plaster and hang mesh on the interior and exterior walls.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an ultra-low energy consumption building exterior wall with curtain wall connectors and a construction method thereof. The vacuum insulation panels and rock wool insulation layers are used as insulation layers. The vacuum insulation panels have excellent thermal insulation properties and can effectively improve the thermal performance of the building exterior wall. At the same time, the rock wool insulation layer blocks most of the direct heat exchange between the steel keel and the external environment, thereby preventing a large amount of heat loss from the steel keel. 2. The present invention provides an ultra-low energy consumption building exterior wall with curtain wall connectors and a construction method thereof. The connecting steel plates and internal embedded parts are both bolted to the thermal insulation pads, and a split staggered anchoring method is adopted. The bolts are not embedded through the thermal insulation pads to isolate local thermal bridges, effectively avoiding direct heat transfer between the bolts, and can greatly reduce the thermal bridge effect caused by the connectors. 3. The present invention provides an ultra-low energy consumption building exterior wall with curtain wall connectors and a construction method thereof. The thermal insulation pads are in the form of a concrete-wrapped polyurethane outer frame, and the bolt assembly material is GFRP. The embedded position and embedded depth are determined in advance before construction. On the basis of ensuring the connection strength, the thermal performance of the wall is effectively improved from the material perspective. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a structural cross-sectional view of an ultra-low energy consumption building exterior wall with curtain wall connectors according to the present invention; Figure 2 This is an overall schematic diagram of a connector in an ultra-low energy consumption building exterior wall with a curtain wall connector according to the present invention; Figure 3 This is an exploded view of a connector in an ultra-low energy consumption building exterior wall with a curtain wall connector according to the present invention; Figure 4This is a schematic plan view of a thermal insulation pad in an ultra-low energy consumption building exterior wall with a curtain wall connector according to the present invention; Figure 5 for Figure 4 Schematic diagram of the cross section at AA in the middle.
[0017] 1- rock wool insulation layer, 2- vacuum insulation panel insulation layer, 3- bonding layer, 4- ceramsite base wall, 5- concrete beam, 6- embedded parts, 7- insulation pads, 8- bolt assembly, 9- connecting steel plate, 10- keel, 1-1- air barrier membrane, 6-1- anchor plate, 6-2- anchor rod, 7-1- rigid polyurethane outer frame, 7-2- concrete inner core, 8-1- screw, 8-2- nut and washer, 8-3- nut. DETAILED DESCRIPTION
[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.
[0019] See also Figure 1-5 This embodiment describes an ultra-low energy consumption building exterior wall with a curtain wall connector, which includes a rock wool insulation layer 1, a vacuum insulation panel insulation layer 2, a bonding layer 3, a ceramsite base wall 4, a concrete beam 5 and a connector. The vacuum insulation panel insulation layer 2 is arranged on the outside of the ceramsite base wall 4. The ceramsite base wall 4 and the vacuum insulation panel insulation layer 2 are connected by the bonding layer 3. The concrete beam 5 is arranged on the ceramsite base wall 4. The connector is arranged on the outside of the concrete beam 5 and connected to the concrete beam 5. The rock wool insulation layer 1 is arranged on the outside of the vacuum insulation panel insulation layer 2 and connected to the connector. The connector includes an embedded part 6, an insulation pad 7, a bolt assembly 8, a connecting steel plate 9 and a keel 10. The embedded parts 6 and the connecting steel plates 9 are respectively arranged on the inner and outer sides of the thermal insulation pads 7. The embedded parts 6 and the connecting steel plates 9 are connected to the thermal insulation pads 7 by bolt assemblies 8. The embedded parts 6 are embedded in the concrete beam 5. The keel 10 is arranged on the outer side of the connecting steel plates 9 and wrapped in the rock wool insulation layer 1. One end of the keel 10 passes through the outer side of the rock wool insulation layer 1. Two insulation layers, the vacuum insulation panel insulation layer 2 and the rock wool insulation layer 1, are adopted. The vacuum insulation panel has excellent thermal insulation performance and can effectively improve the thermal performance of the building's exterior wall. At the same time, the rock wool insulation layer 1 blocks most of the direct heat exchange between the steel keel 10 and the external environment, which can avoid a large amount of heat loss from the steel keel 10.
[0020] The rock wool insulation layer 1 in this embodiment is composed of two layers of rock wool boards, and a certain distance is left between the boundary of the rock wool board and the keel 10. An air barrier membrane 1-1 is arranged between the two layers of rock wool boards. The air barrier membrane 1-1 is laid at the junction of the connecting steel plate 9 and the vacuum insulation panel insulation layer 2 using a right-angle turning coating process to prevent the thermal performance of the wall from being affected by the infiltration of water vapor. There is a distance between the air barrier membrane 1-1 and the bolt assembly 8 on the connecting steel plate 9 to prevent the air barrier membrane (1-1) from being damaged.
[0021] The vacuum insulation panel insulation layer 2 in this embodiment includes several layers of staggered vacuum insulation panels, each layer is provided with several vacuum insulation panels, and there are gaps between the panels of each layer of the several vacuum insulation panels. The vacuum insulation panel insulation layer 2 adopts a staggered paving process to increase the heat transfer path and improve the thermal performance of the building exterior wall. In this embodiment, the number of layers of vacuum insulation panels is two.
[0022] In this embodiment, the embedded parts 6 include an anchor plate 6-1 and several anchor rods 6-2. The anchor rods 6-2 are connected to the inner surface of the anchor plate 6-1. The anchor rods 6-2 are embedded in the concrete beam 5. One end of the anchor rod 6-2 is at a certain distance from the inner surface of the concrete beam 5.
[0023] The thermal insulation pad 7 in this embodiment includes a rigid polyurethane outer frame 7-1 and a concrete inner core 7-2. The rigid polyurethane outer frame 7-1 is arranged around the concrete inner core 7-2. The bolt assembly 8 is made of GFRP. The thermal insulation pad 7 adopts the form of concrete wrapped in a polyurethane outer frame 7-1. The bolt assembly 8 is made of GFRP. The embedded position and embedded depth are determined in advance before construction. On the basis of ensuring the connection strength, the thermal performance of the wall is effectively improved from the material perspective.
[0024] The bolt assembly 8 in this embodiment includes a screw 8-1, a nut washer 8-2 and a nut 8-3. A plurality of screws 8-1 are embedded in the inner and outer sides of the concrete core 7-2 in an alternating manner. The screws 8-1 on the inner and outer sides of the concrete core 7-2 pass through the anchor plate 6-1 and the connecting steel plate 9 respectively and are connected and fixed by the nut washer 8-2 and the nut 8-3. The connecting steel plate 9 and the internal embedded part 6 are both connected to the thermal insulation pad 7 through the bolt assembly 8, and a split staggered anchoring is adopted. The screw 8-1 is non-through embedded in the thermal insulation pad 7 to isolate the local thermal bridge, effectively avoiding direct heat transfer between the bolts, and greatly reducing the thermal bridge effect generated by the connecting parts.
[0025] In this embodiment, the anchor plate 6 - 1 and the connecting steel plate 9 are both provided with through circular holes that match the screw rod 8 - 1 , and the screw rod 8 - 1 passes through the anchor plate 6 - 1 and the connecting steel plate 9 through the through circular holes.
[0026] This embodiment also provides a method for constructing an ultra-low energy consumption building exterior wall with curtain wall connectors, which includes the following steps: Step 1: Complete the construction of the ceramsite base wall 4 of the required size in the factory, and accurately locate it according to the pre-embedded position and depth obtained by measurement, place the screw 8-1 at the planned position in the rigid polyurethane outer frame 7-1, pour the internal concrete core 7-2 and cure it to form the thermal insulation pad 7; Step 2: After the curing is completed, insert the inner screw 8-1 embedded in the thermal insulation block 7 through the through-hole on the anchor plate 6-1 of the embedded part 6, put on the nut washer 8-2, and tighten the nut 8-3 to complete the connection between the thermal insulation block 7 and the embedded part 6: Step 3: According to the specific construction plan, place the connected insulation pads 7 and embedded parts 6 in the formwork of the concrete beam 5, and align the outer surface of the embedded parts 6 with the outer surface of the concrete beam 5 to ensure that there will be no installation gaps that reduce the thermal performance of the wall during the subsequent wall installation process. Pour the concrete beam 5 and maintain it. Step 4: Pass the outer screw 8-1 embedded in the thermal insulation pad 7 through the through-hole on the connecting steel plate 9, put on the nut washer 8-2, and tighten the nut 8-3 to complete the connection between the connecting steel plate 9 and the thermal insulation pad 7; Step 5: Place the keel 10 at the planned position outside the connecting steel plate 9 and connect the two by welding; Step 6: Position and install the concrete beam 5 with the connector and the ceramsite base wall 4. Bond the concrete beam 5 and the ceramsite base wall 4 with thermal insulation mortar, and make the inner and outer surfaces of the two flush. Step 7: Bond the insulation layer 2 of the vacuum insulation panel to the outer surface of the ceramsite base wall 4 and the concrete beam 5 through the adhesive layer 3. The material used is thermal insulation mortar to ensure the smoothness of the construction of the insulation layer 2 of the vacuum insulation panel. In this embodiment, the vacuum insulation panel has two layers. After the first layer of vacuum insulation panel is bonded, the second layer of vacuum insulation panel is bonded with staggered joints to reduce the impact of the panel joints on the thermal performance of the building exterior wall. Step 8: Insert the air barrier membrane 1-1 between the two layers of rock wool boards, and wrap the rock wool insulation layer 1 on the outside of the keel 10 to reduce heat loss and ensure that the curtain wall is connected and installed to the wall through the keel 10; Step 9: Plaster and mesh the interior and exterior walls using thermal insulation mortar.
[0027] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.
Claims
1. An ultra-low energy consumption building exterior wall with curtain wall connectors, characterized by: It comprises a rock wool insulation layer (1), a vacuum insulation panel insulation layer (2), a bonding layer (3), a ceramsite base wall (4), a concrete beam (5) and a connecting piece, wherein the vacuum insulation panel insulation layer (2) is arranged on the outside of the ceramsite base wall (4); the ceramsite base wall (4) and the vacuum insulation panel insulation layer (2) are connected via the bonding layer (3); the concrete beam (5) is arranged on the ceramsite base wall (4); the connecting piece is arranged on the outside of the concrete beam (5) and connected to the concrete beam (5); and the rock wool insulation layer (1) is arranged on the outside of the vacuum insulation panel insulation layer (2) and connected to the connecting piece.
2. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 1, characterized in that: The connecting part comprises an embedded part (6), a heat-insulating pad (7), a bolt assembly (8), a connecting steel plate (9) and a keel (10). The embedded part (6) and the connecting steel plate (9) are respectively arranged on the inner side and the outer side of the heat-insulating pad (7). The embedded part (6) and the connecting steel plate (9) are both connected to the heat-insulating pad (7) via the bolt assembly (8). The embedded part (6) is embedded in the concrete beam (5). The keel (10) is arranged on the outer side of the connecting steel plate (9) and wrapped in the rock wool insulation layer (1). One end of the keel (10) passes through the outer side of the rock wool insulation layer (1).
3. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 2, characterized in that: The rock wool insulation layer (1) is composed of two layers of rock wool boards, a certain distance is left between the boundary of the rock wool boards and the keel (10), and an air barrier membrane (1-1) is provided between the two layers of rock wool boards. The air barrier membrane (1-1) is laid at the junction of the connecting steel plate (9) and the vacuum insulation panel insulation layer (2) using a right-angle turning coating process, and there is a distance between the air barrier membrane (1-1) and the bolt assembly (8) on the connecting steel plate (9).
4. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 3, characterized in that: The vacuum insulation panel heat preservation layer (2) comprises a plurality of layers of staggered vacuum insulation panels, each layer is provided with a plurality of vacuum insulation panels, and gaps exist between the panels of each layer of the plurality of vacuum insulation panels.
5. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 2, characterized in that: The embedded part (6) comprises an anchor plate (6-1) and a plurality of anchor rods (6-2), wherein the anchor rods (6-2) are connected to the inner surface of the anchor plate (6-1), and the anchor rods (6-2) are embedded in the concrete beam (5), with one end of the anchor rod (6-2) being at a certain distance from the inner surface of the concrete beam (5).
6. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 2, characterized in that: The heat-insulating pad (7) comprises a hard polyurethane outer frame (7-1) and a concrete inner core (7-2), wherein the hard polyurethane outer frame (7-1) is arranged around the concrete inner core (7-2).
7. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 6, characterized in that: The bolt assembly (8) comprises a screw rod (8-1), a nut washer (8-2) and a nut (8-3); a plurality of screw rods (8-1) are pre-embedded in an alternating manner on both sides of the inner and outer sides of the concrete inner core (7-2); the screw rods (8-1) on both sides of the inner and outer sides of the concrete inner core (7-2) respectively pass through the anchor plate (6-1) and the connecting steel plate (9) and are connected and fixed by the nut washer (8-2) and the nut (8-3).
8. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 7, characterized in that: The material of the bolt assembly (8) is GFRP.
9. The ultra-low energy consumption building exterior wall with curtain wall connector according to claim 7, characterized in that: The anchor plate (6-1) and the connecting steel plate (9) are both provided with through circular holes that match the screw rod (8-1).
10. A construction method for an ultra-low energy consumption building exterior wall with a curtain wall connector according to claim 1, characterized in that: It includes the following steps: Step 1: Complete the construction of the ceramsite base wall (4) of the required wall size in the factory, and accurately locate it according to the pre-embedded position and depth obtained by measurement, place the screw (8-1) at the planned position in the hard polyurethane outer frame (7-1), pour the internal concrete core (7-2) and cure it to form the thermal insulation pad (7); Step 2: After the curing is completed, the inner screw (8-1) embedded in the thermal insulation pad (7) is passed through the through-hole on the anchor plate (6-1) of the embedded part (6), and the nut washer (8-2) is put on. The nut (8-3) is tightened to complete the connection between the thermal insulation pad (7) and the embedded part (6): Step 3: According to the specific construction plan, the connected thermal insulation pad (7) and the embedded part (6) are placed in the formwork of the concrete beam (5), and the outer surface of the embedded part (6) is flush with the outer surface of the concrete beam (5), and the concrete beam (5) is poured and cured; Step 4: Insert the outer screw (8-1) embedded in the heat-insulating pad (7) through the through-hole on the connecting steel plate (9), put on the nut washer (8-2), and tighten the nut (8-3) to complete the connection between the connecting steel plate (9) and the heat-insulating pad (7); Step 5: Place the keel (10) at the planned position outside the connecting steel plate (9) and connect the two by welding; Step 6: Position and install the concrete beam (5) with the connector and the ceramsite base wall (4), bond the concrete beam (5) and the ceramsite base wall (4) with thermal insulation mortar, and make the inner and outer surfaces of the two flush; Step 7: bonding the vacuum insulation panel insulation layer (2) to the outer surface of the ceramsite base wall (4) and the concrete beam (5) through the adhesive layer (3); Step 8: sandwich an air barrier film (1-1) between two layers of rock wool boards, and wrap the rock wool insulation layer (1) on the outside of the keel (10); Step 9: Plaster and hang mesh on the interior and exterior walls.