Environment-friendly building external wall thermal insulation structure
By combining a double-glass photovoltaic module layer, an air convection cavity, and a phase change heat storage layer on the building's exterior wall, the problems of insufficient thermal management efficiency of traditional insulation materials and unutilized photovoltaic waste heat are solved, achieving efficient utilization of photovoltaic waste heat and reduction of building energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YISHAN (SHANGHAI) IND CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
Traditional building exterior wall insulation materials have insufficient thermal management efficiency and cannot dynamically adjust heat flow. Photovoltaic waste heat is not effectively utilized, resulting in energy waste and increased air conditioning load.
The structure adopts a combination of double-glass photovoltaic module layer, air convection cavity, phase change heat storage layer and vacuum insulation board layer within an aluminum alloy frame. It achieves dynamic regulation of heat flow through waste heat storage of photovoltaic module power generation, air convection and vacuum insulation, thereby improving waste heat utilization and heat preservation effect.
It achieves efficient utilization of photovoltaic waste heat, seasonally adaptive thermal management, reduces energy waste and building energy consumption, and maintains stable internal temperature.
Smart Images
Figure CN224161224U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building exterior wall insulation technology, and relates to an environmentally friendly building exterior wall insulation structure. Background Technology
[0002] Traditional building exterior wall insulation technology mainly relies on single materials such as polystyrene foam boards and rock wool boards to achieve thermal barrier properties. This structure suffers from the following problems: insufficient thermal management efficiency: traditional insulation materials have high thermal conductivity and cannot dynamically regulate heat flow. For example, the thickness of polystyrene foam boards (EPS) needs to reach 80-120mm to meet the requirements of low-energy buildings, occupying a large amount of building facade space and exhibiting poor adaptability to renovation projects. Furthermore, in summer, the surface temperature of photovoltaic panels can reach over 70℃, and heat is conducted into the interior through the walls, exacerbating the air conditioning load; lack of utilization of photovoltaic waste heat: although building-integrated photovoltaics (BIPV) technology can generate electricity, approximately 20%-30% of the waste heat from the backsheets of photovoltaic modules, accounting for a significant portion of the total radiant energy, is not effectively recovered, leading to energy waste and failing to meet the requirements of energy-efficient buildings.
[0003] Therefore, this utility model provides an environmentally friendly building exterior wall insulation structure to solve the above problems. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model discloses an environmentally friendly building exterior wall insulation structure. The technical solution adopted includes an aluminum alloy outer frame. A double-glass photovoltaic module layer is fixedly installed on the front side of the inner wall of the aluminum alloy outer frame. Several downwardly inclined convection holes are evenly arrayed from left to right on the upper and lower edges of the double-glass photovoltaic module layer. Miniature electric actuators are symmetrically installed on the middle parts of the upper and lower sides of the rear side wall of the double-glass photovoltaic module layer. The telescopic shafts of the upper and lower miniature electric actuators are fixedly connected to mounting blocks. The upper and lower mounting blocks are fixedly connected to the middle parts of the rear side wall of the baffle. An air convection cavity is set on the rear side of the double-glass photovoltaic module layer. Slots are opened on the front side of the corresponding aluminum alloy inner frame wall on the upper and lower sides of the air convection cavity. A phase change heat storage layer is fixedly installed on the frame on the rear side of the air convection cavity. Several heat conduction pipes are evenly distributed from left to right inside the phase change heat storage layer. Extension pipes are set forward on the front side walls of the upper and lower sides of the heat conduction pipes. A vacuum insulation plate layer is installed on the rear side of the phase change heat storage layer.
[0005] As a preferred embodiment of this utility model, mounting holes are respectively opened at the four corners of the aluminum alloy outer frame, and temperature sensors are respectively installed on the upper and lower left and right inner walls of the aluminum alloy outer frame facing the air convection cavity. By using temperature sensors, it is easy to detect the air temperature inside the air convection cavity. In hot summer, the temperature data can be transmitted to the controller, which controls the upper and lower miniature electric actuators to move the upper and lower baffles towards the middle, so that the convection holes on the upper and lower edges of the double-glass photovoltaic module layer open. The hot air inside flows out from the upper convection hole, and the cold air outside flows in from the lower convection hole, thereby improving the air flow between the air convection cavity and the outside air and realizing automatic heat dissipation.
[0006] As a preferred embodiment of this utility model, the front sidewall of the double-glass photovoltaic module layer is coated with a transparent hydrophobic layer, and graphene thermal pads are installed on the upper and lower sides of the rear sidewall of the double-glass photovoltaic module layer respectively; by using graphene thermal pads, the heat generated by the double-glass photovoltaic module layer absorbing solar energy is transferred to the phase change thermal storage layer on the rear side.
[0007] As a preferred embodiment of this utility model, the upper and lower graphene thermal pads are respectively fixedly connected to the corresponding extension tubes on the upper and lower sides.
[0008] As a preferred embodiment of this utility model, the vacuum insulation board layer includes a vacuum board formed by sealing and encapsulating an inorganic fiber core material and an aluminum foil composite gas barrier film. Fireproof rock wool sealing strips are fixedly installed on the outer sidewalls of the vacuum board. By eliminating air convection and gas heat transfer in a vacuum environment, the energy loss of the wall due to temperature difference is reduced, and the internal temperature of the building is maintained stably.
[0009] As a preferred embodiment of this utility model, a controller is fixedly installed at the center of the rear sidewall of the double-glass photovoltaic module layer.
[0010] The beneficial effects of this utility model are:
[0011] 1. By utilizing the waste heat generated during daytime power generation by the double-glass photovoltaic module layer, the heat is introduced into the phase change heat storage layer through heat pipes. The phase change heat storage layer releases heat energy at night to compensate for the building's heat loss, thereby achieving the effect of nighttime heat preservation and improving the utilization efficiency of photovoltaic waste heat.
[0012] 2. The air convection cavity allows air to circulate with the outside air through the convection holes on the upper and lower edges of the double-glass photovoltaic module. In summer, the temperature inside the air convection cavity is detected by temperature sensors on both sides, which control the movement of the upper and lower miniature electric actuators to drive the upper and lower baffles to open the upper and lower convection holes, accelerate air flow, and achieve automatic heat dissipation. In winter, the upper and lower convection holes are closed to form a static air insulation layer, improve the heat preservation effect at night, and achieve seasonal adaptive adjustment.
[0013] Third, a vacuum environment is created by using vacuum insulation panels to eliminate air convection and gas heat transfer, reduce energy loss in the walls due to temperature differences, and maintain a stable internal temperature in the building. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;
[0016] Figure 3 This is a cross-sectional view of the rear side of the double-glass photovoltaic module layer of this utility model;
[0017] Figure 4 This is a partial cross-sectional view of the phase change heat storage layer and vacuum insulation plate layer of this utility model.
[0018] In the diagram: 1-Aluminum alloy outer frame, 2-Double-glass photovoltaic module layer, 3-Air convection cavity, 4-Phase change thermal storage layer, 5-Vacuum insulation board layer, 6-Controller, 11-Slot, 12-Mounting hole, 13-Temperature sensor, 21-Convection hole, 22-Miniature electric actuator, 23-Mounting block, 24-Baffle, 25-Graphene thermal conductive pad, 41-Heat conductive pipe, 42-Extension pipe, 51-Inorganic fiber core material, 52-Aluminum foil composite gas barrier film, 53-Fireproof rock wool edge sealing strip. Detailed Implementation
[0019] Example 1
[0020] like Figures 1 to 4As shown, the environmentally friendly building exterior wall insulation structure of this utility model adopts the following technical solution: It includes an aluminum alloy outer frame 1; slots 11 are respectively opened on the front side of the aluminum alloy inner frame wall corresponding to the upper and lower sides of the air convection cavity 3; mounting holes 12 are respectively opened at the four corners of the aluminum alloy outer frame 1; temperature sensors 13 are respectively installed on the upper and lower sides of the left and right inner walls of the aluminum alloy outer frame 1 facing the air convection cavity 3; and a double-glass photovoltaic module layer 2 is fixedly installed on the front side of the inner wall of the aluminum alloy outer frame 1. 2. An 8mm thick double-glass photovoltaic panel is used. Several downward-sloping convection holes 21 are evenly arrayed from left to right along the upper and lower edges of the double-glass photovoltaic module layer 2. Miniature electric actuators 22 are symmetrically installed on the middle of the upper and lower sides of the rear sidewall of the double-glass photovoltaic module layer 2. The telescopic shafts of the upper and lower miniature electric actuators 22 are fixedly connected to mounting blocks 23. The upper and lower mounting blocks 23 are fixedly connected to the middle of the rear sidewall of baffles 24. The upper and lower baffles 24 are movably inserted into corresponding upper and lower slots 11. A transparent hydrophobic layer is coated on the front sidewall of the double-glass photovoltaic module layer 2. Graphene thermal pads 25 are installed on the upper and lower sides of the rear sidewall of the double-glass photovoltaic module layer 2. An air convection cavity 3 is provided on the rear side of the double-glass photovoltaic module layer 2. A phase change heat storage layer 4 is fixedly installed on the frame on the rear side of the air convection cavity 3. The phase change heat storage layer 4 is filled with a paraffin-expanded graphite composite phase change material with a thickness of 25-30mm. Several heat-conducting pipes 41 are evenly distributed from left to right inside the phase change heat storage layer 4. The heat-conducting pipes 41 are made of nickel alloy and the pipe spacing is ≤150mm. The heat-conducting pipe 41 has extension pipes 42 on its front sidewalls on both the upper and lower sides. The upper and lower graphene heat-conducting pads 25 are fixedly connected to the corresponding extension pipes 42 on the upper and lower sides. A vacuum insulation board layer 5 is installed on the rear side of the phase change heat storage layer 4. The vacuum insulation board layer 5 includes a vacuum board formed by sealing and encapsulating inorganic fiber core material 51 and aluminum foil composite gas barrier film 52. A fireproof rock wool sealing strip 53 is fixedly installed on the outer sidewall of the vacuum board. A controller 6 is fixedly installed at the center of the rear sidewall of the double-glass photovoltaic module layer 2.
[0021] The working principle of this utility model is as follows: During use, the aluminum alloy outer frame 1 is fixedly connected to the wall through the mounting holes 12 at the four corners, achieving the installation of the external wall insulation structure. During the daytime sunlight in winter, the double-glass photovoltaic module layer 2 generates heat during photoelectric conversion, which is transferred to the heat-conducting pipe 41 built into the phase change heat storage layer 4 through the graphene thermal conductive pads 25 on its upper and lower sides. The heat-conducting pipe 41 heats the phase change heat storage layer 4. Since the phase change heat storage layer 4 uses a paraffin-expanded graphite composite phase change material, it stores the heat. At night, when the external temperature drops, the phase change heat storage layer 4 releases the stored heat to reduce the heat transfer from the building wall to the outside at night, thereby achieving the insulation effect. In summer, when the daytime temperature is high... During the power generation process of the double-glass photovoltaic module layer 2, its own heat is relatively high. This heat is detected by the temperature sensors 13 on both sides of the air convection cavity 3 and fed back to the controller 6. The controller 6 controls the upper and lower miniature electric actuators 22 to move, separating the upper and lower baffles 24 from the upper and lower convection holes 21 respectively. This opens the air convection cavity 3 to the outside, allowing hot air to flow out from the upper convection hole 21 and outside air to flow in from the lower convection hole 21. This achieves air exchange within the air convection cavity 3 and initiates automatic cooling. At the same time, the air convection cavity 3 and the internal vacuum insulation plate layer 5 effectively block the heat transfer between the high temperature outside and the building walls, thereby further reducing the energy consumption caused by air conditioning and other equipment inside the building and achieving energy-saving effects.
[0022] Electrical connection methods or structures not described in detail in this article are existing technologies.
[0023] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. An environmentally friendly building exterior wall insulation structure, characterized in that: The system includes an aluminum alloy frame (1), on the front side of the inner wall of the aluminum alloy frame (1), a double-glass photovoltaic module layer (2) is fixedly installed. Several downward-sloping convection holes (21) are uniformly arrayed from left to right on the upper and lower edges of the double-glass photovoltaic module layer (2). Miniature electric actuators (22) are symmetrically installed on the middle parts of the upper and lower sides of the rear side wall of the double-glass photovoltaic module layer (2). The telescopic shafts of the upper and lower miniature electric actuators (22) are fixedly connected to mounting blocks (23). The upper and lower mounting blocks (23) are fixedly connected to the middle parts of the rear side wall of the baffle (24). The double-glass photovoltaic module layer (2) is fixedly connected to an air convection cavity (3) on the rear side. The upper and lower sides of the air convection cavity (3) are respectively provided with slots (11) on the front side of the corresponding aluminum alloy inner frame wall. The frame on the rear side of the air convection cavity (3) is fixedly installed with a phase change heat storage layer (4). Several heat conduction pipes (41) are evenly arranged from left to right inside the phase change heat storage layer (4). The front side walls on the upper and lower sides of the heat conduction pipes (41) are respectively provided with forward extension pipes (42). The vacuum insulation plate layer (5) is installed on the rear side of the phase change heat storage layer (4).
2. The environmentally friendly building exterior wall insulation structure according to claim 1, characterized in that: Mounting holes (12) are opened at the four corners of the aluminum alloy frame (1), and temperature sensors (13) are installed on the upper and lower sides of the left and right inner walls of the aluminum alloy frame (1) facing the air convection cavity (3).
3. The environmentally friendly building exterior wall insulation structure according to claim 1, characterized in that: The front sidewall of the double-glass photovoltaic module layer (2) is coated with a transparent hydrophobic layer, and graphene thermal pads (25) are installed on the upper and lower sides of the rear sidewall of the double-glass photovoltaic module layer (2).
4. The environmentally friendly building exterior wall insulation structure according to claim 3, characterized in that: The graphene thermal pads (25) on the upper and lower sides are fixedly connected to the corresponding extension tubes (42) on the upper and lower sides respectively.
5. The environmentally friendly building exterior wall insulation structure according to claim 1, characterized in that: The vacuum insulation board layer (5) includes a vacuum board formed by sealing and encapsulating an inorganic fiber core material (51) and an aluminum foil composite gas barrier film (52), and a fireproof rock wool sealing strip (53) is fixedly installed on the outer side wall of the vacuum board.
6. The environmentally friendly building exterior wall insulation structure according to claim 1, characterized in that: The controller (6) is fixedly installed at the center of the rear side wall of the double-glass photovoltaic module layer (2).