Passive house wall thermal insulation structure
By using multi-layer composite insulation materials and a built-in injectable and drainable cavity design, the heat capacity and heat storage capacity of the passive house walls are dynamically adjusted, solving the problem of thermal inertia fixation of passive house wall insulation materials and achieving more efficient energy utilization and living comfort.
Patent Information
- Application Number
- CN202520343317.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The thermal inertia of existing passive house wall insulation materials is fixed, making it impossible to dynamically adjust the heat storage capacity according to the season or diurnal temperature difference, resulting in increased energy consumption under extreme climate conditions.
It adopts multi-layer composite insulation material, with built-in water-fillable cavity grooves, combined with temperature sensors and control system to dynamically adjust the heat capacity and heat storage capacity of the insulation layer, enhance heat exchange through heat-conducting fins, eliminate thermal bridges by filling with rock wool felt, and set up a waterproof and breathable membrane for protection.
It improves the thermal insulation and heat performance of the walls, reduces energy consumption, enhances living comfort, adapts to different seasons and diurnal temperature variations, and reduces energy waste.
Smart Images
Figure CN223937369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy-saving building technology, specifically a passive house wall insulation structure, which aims to improve the thermal performance of passive house wall structures, reduce energy consumption, and enhance living comfort. Background Technology
[0002] A passive house is a type of dwelling that can meet its cooling and heating needs without actively supplying energy. It is a highly energy-efficient and comfortable building type. Passive houses can achieve energy savings of over 90%, consuming only about one-tenth the energy of ordinary residential buildings. Due to its extremely low energy consumption, passive houses significantly reduce carbon dioxide emissions during operation, making them significant for environmental protection. Although the initial construction cost of a passive house may be slightly higher than that of a conventional building, its lower energy consumption and maintenance costs throughout its entire life cycle make it more economical. Passive houses represent a new energy-saving building concept. Through superior insulation, excellent airtightness, and efficient ventilation systems, they achieve the goal of meeting cooling and heating needs without actively supplying energy. Passive houses not only offer significant energy savings but also outstanding environmental benefits, making them an important direction for future building development.
[0003] With increasing global awareness of energy conservation and environmental protection, passive houses, as a highly efficient and energy-saving building form, have received widespread attention. Passive houses achieve extremely low energy demand by optimizing the thermal performance of the building envelope, with wall insulation being a key technology. Currently, passive house walls typically use high-density insulation materials (such as XPS extruded polystyrene boards and rock wool) for insulation, but their thermal inertia is fixed, making it impossible to dynamically adjust heat storage capacity according to seasons or diurnal temperature variations. Furthermore, in extreme climates (such as extremely cold or hot regions), the thermal hysteresis effect of traditional insulation structures is limited, potentially leading to increased energy consumption. Therefore, this invention provides a passive house wall insulation structure to address the aforementioned problems. Utility Model Content
[0004] To address the shortcomings of existing structures, this utility model provides a passive house wall insulation structure. This structure uses multi-layer composite insulation materials, which effectively improves the insulation performance of the wall. At the same time, it achieves dynamic thermal inertia adjustment through built-in injectable and drainable cavity grooves, thereby enhancing the thermal insulation performance.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A passive house wall insulation structure includes a wall and a light steel keel. The light steel keel is fixed on the wall, and an insulation layer is provided on the outside of the light steel keel. The insulation layer is fixedly connected to the light steel keel by anchors. A heat insulation layer is connected to the outside of the insulation layer by an adhesive layer. A decorative layer is provided on the outside of the heat insulation layer. A temperature sensor is installed on the surface of the heat insulation layer and the temperature sensor is connected to an external control system.
[0007] The insulation layer has an adjustable cavity box inside. The upper end of the adjustable cavity box is connected to a water injection hose, which is connected to an external water pump. The lower end of the adjustable cavity box is connected to a drain pipe, and the outer end of the drain pipe extends from the front surface of the insulation layer. An electrically controlled drain valve is installed at the outer end of the drain pipe, and the electrically controlled drain valve is connected to an external control system.
[0008] Furthermore, the front and rear sides of the adjustment cavity box are evenly provided with multiple sets of heat-conducting fins, which are embedded inside the insulation layer.
[0009] Furthermore, the adjustable cavity box is provided with multiple sets of ribs vertically and evenly inside. The upper and lower ends of the ribs are spaced from the inner wall of the adjustable cavity box, and their front and rear sides are fixedly connected to the adjustable cavity box.
[0010] Furthermore, the area between the wall, the light steel keel and the insulation layer is filled with rock wool felt.
[0011] Furthermore, rubber and plastic pads are adhered to both the front and rear sides of the insulation layer.
[0012] Furthermore, a waterproof layer is provided between the heat insulation layer and the finishing layer, and the waterproof layer is a waterproof and breathable membrane.
[0013] Furthermore, the insulation layer is a graphite polystyrene board, and the heat insulation layer is a vacuum insulation board.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] 1. This utility model uses multi-layer composite insulation material, which effectively improves the insulation performance of the wall. At the same time, it achieves dynamic thermal inertia adjustment through built-in injectable and drainable cavity grooves, thereby improving the thermal insulation performance, enhancing the thermal performance of the passive house wall structure, improving living comfort, and reducing energy consumption for heating in winter and cooling in summer.
[0016] 2. This utility model can dynamically change the heat capacity of the insulation layer by adjusting the amount of water in the cavity box, adapting to changes in temperature between different seasons and day and night. By optimizing the heat storage capacity of the insulation structure, energy waste can be reduced and the energy efficiency of the passive house can be improved. Dynamically adjusting the heat storage capacity of the insulation layer can make the indoor temperature more stable and improve the comfort of the residents.
[0017] 3. In this utility model, multiple sets of heat-conducting fins are evenly provided on the front and rear sides of the adjustable cavity box. The heat-conducting fins are embedded inside the insulation layer. The arrangement of the heat-conducting fins can enhance the heat exchange efficiency between the adjustable cavity box and the insulation layer. By increasing the heat exchange area, the heat-conducting fins can promote the heat transfer between the medium inside the cavity box and the insulation layer, thereby improving the dynamic adjustment performance of the entire insulation structure.
[0018] 4. In this utility model, multiple sets of ribs are evenly arranged vertically inside the regulating cavity box. The upper and lower ends of the ribs are spaced from the inner wall of the regulating cavity box, and their front and rear sides are fixedly connected to the regulating cavity box. As a reinforcing component inside the regulating cavity box, the ribs can increase the structural strength of the cavity box, prevent it from deforming or breaking when subjected to external forces or internal medium pressure, improve the overall stability of the regulating cavity box, and at the same time, do not affect the flow of water inside the regulating cavity box.
[0019] 5. In this utility model, rubber and plastic pads are adhered to both the front and rear sides of the insulation layer. The rubber and plastic insulation material has excellent thermal insulation properties, which can further improve the thermal insulation effect of the insulation layer. A waterproof layer is provided between the insulation layer and the finishing layer. The waterproof layer is a waterproof and breathable membrane. The waterproof and breathable membrane has excellent waterproof performance and can effectively prevent moisture from penetrating from the outside into the building interior, protecting the insulation layer and the thermal insulation layer from moisture erosion. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.
[0022] Figure 3 This is a cross-sectional view of the present invention.
[0023] Figure 4 This is a schematic diagram of the thermal insulation layer in this utility model.
[0024] Figure 5 This is a partial cross-sectional view of the insulation layer in this utility model.
[0025] Figure 6 This is a cross-sectional view of the adjustable cavity box in this utility model.
[0026] In the diagram: 1. Wall; 2. Light steel keel; 3. Rock wool felt; 4. Insulation layer; 5. Heat insulation layer; 6. Finishing layer; 7. Temperature sensor; 8. Rubber and plastic padding layer; 9. Adhesive layer; 10. Waterproof layer; 11. Adjustable cavity box; 12. Anchor; 13. Electrically controlled drain valve; 14. Water injection hose; 15. Rib plate; 16. Heat-conducting fins; 17. Drain pipe. Detailed Implementation
[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0028] Example: Figures 1 to 6 As shown, a passive house wall insulation structure includes a wall 1 and a light steel keel 2. The light steel keel 2 is fixed on the wall 1 to fix the insulation layer 4. The insulation layer 4 is provided on the outside of the light steel keel 2. It is made of graphite polystyrene board, which is a material with excellent thermal insulation performance, to achieve thermal insulation of the wall 1. The insulation layer 4 is fixedly connected to the light steel keel 2 by anchors 12 to ensure the stability of the insulation layer 4. The outside of the insulation layer 4 is connected to the heat insulation layer 5 by an adhesive layer 9. It is made of vacuum heat insulation board to further improve the heat insulation effect of the wall 1. The outside of the heat insulation layer 5 is provided with a decorative layer 6, which not only has a decorative function, but also protects the internal heat insulation structure. A temperature sensor 7 is installed on the surface of the heat insulation layer 5. The temperature sensor 7 is connected to an external control system. The temperature sensor 7 is used to detect the temperature change of the external environment and feed it back to the control system for regulation.
[0029] The insulation layer 4 has an adjustable cavity box 11 inside. The upper end of the adjustable cavity box 11 is connected to a water injection hose 14, which is connected to an external water pump. Water can be injected into the cavity box as needed through the water injection hose 14, thereby changing the heat capacity and heat storage capacity of the insulation layer 4. The lower end of the adjustable cavity box 11 is connected to a drain pipe 17, and the outer end of the drain pipe 17 extends from the front surface of the insulation layer 4. An electrically controlled drain valve 13 is installed at the outer end of the drain pipe 17, which is connected to an external control system. The drain pipe 17 and the electrically controlled drain valve 13 can drain the water inside the adjustable cavity box 11 when needed. This design solves the problem that the existing passive house walls 1 usually use high-density insulation materials to achieve heat insulation, but their thermal inertia is fixed and cannot dynamically adjust the heat storage capacity according to the season or diurnal temperature difference. In addition, under extreme climates, the thermal hysteresis effect of traditional insulation structures is limited, which may lead to increased energy consumption.
[0030] In this embodiment, multiple sets of heat-conducting fins 16 are evenly provided on the front and rear sides of the regulating cavity box 11. The heat-conducting fins 16 are embedded inside the insulation layer 4. The arrangement of the heat-conducting fins 16 can enhance the heat exchange efficiency between the regulating cavity box 11 and the insulation layer 4. By increasing the heat exchange area, the heat-conducting fins 16 can promote the heat transfer between the medium inside the cavity box and the insulation layer 4, thereby improving the dynamic adjustment performance of the entire insulation structure.
[0031] In this embodiment, multiple sets of stiffening ribs 15 are evenly arranged vertically inside the regulating cavity box 11. The upper and lower ends of the stiffening ribs 15 are spaced from the inner wall of the regulating cavity box 11, and their front and rear sides are fixedly connected to the regulating cavity box 11. As a reinforcing component inside the regulating cavity box 11, the stiffening ribs 15 can increase the structural strength of the cavity box, prevent it from deforming or breaking when subjected to external forces or internal medium pressure, improve the overall stability of the regulating cavity box 11, and at the same time, do not affect the flow of water inside the regulating cavity box 11.
[0032] In this embodiment, rock wool felt 3 is filled in the area between the wall 1, the light steel keel 2, and the insulation layer 4. Rock wool felt 3 is an insulation material made of rock fiber, which has excellent thermal insulation performance and can effectively prevent heat transfer, reduce the temperature difference between the inside and outside of the wall 1, thereby improving the insulation effect of the passive house. At the same time, filling the area between the wall 1, the light steel keel 2, and the insulation layer 4 with rock wool felt 3 can eliminate the gaps in this area, forming a continuous insulation layer 4, which helps to reduce the thermal bridging effect and improve the overall insulation performance of the wall 1.
[0033] In this embodiment, rubber and plastic pads 8 are bonded to both the front and rear sides of the insulation layer 4. The rubber and plastic insulation material has good thermal insulation performance, which can further improve the thermal insulation effect of the insulation layer 4.
[0034] In this embodiment, a waterproof layer 10 is provided between the heat insulation layer 5 and the finishing layer 6. The waterproof layer 10 is a waterproof and breathable membrane. The waterproof and breathable membrane has excellent waterproof performance and can effectively prevent moisture from penetrating from the outside into the interior of the building, protecting the heat insulation layer 5 and the thermal insulation layer 4 from moisture erosion.
[0035] In this embodiment, the insulation layer 4 is a graphite polystyrene board, which is made by adding graphite particles to polystyrene EPS and modifying it through chemical methods. The special layered structure of graphite can reflect heat radiation like a mirror, significantly improving the insulation effect. The heat insulation layer 5 is a vacuum insulation board, which effectively avoids heat transfer caused by air convection by vacuuming, significantly reducing the thermal bridge effect and improving the insulation effect.
[0036] The working principle of this passive house wall insulation structure:
[0037] In practical use, the graphite polystyrene board is fixed to the outside of the light steel keel 2, and anchors 12 are used to ensure stability. Rubber and plastic pads 8 are bonded to both sides of the insulation layer 4. A vacuum insulation board is connected to the outside of the insulation layer 4 via an adhesive layer 9 to form the insulation layer 5, ensuring no gaps between the vacuum insulation board and the insulation layer 4 to improve insulation performance. A decorative surface layer 6 is installed on the outside of the insulation layer 5 for decoration and protection. A waterproof and breathable membrane is installed between the insulation layer 5 and the decorative surface layer 6 to ensure waterproof performance. A temperature sensor 7 is installed on the surface of the insulation layer 5 and connected to an external control system. Based on seasonal and diurnal temperature variations, the control system adjusts the injection and drainage of water in the cavity box 11 to dynamically adjust the heat capacity and heat storage capacity of the insulation layer 4.
[0038] Winter mode: Control the external water pump to inject water into the regulating cavity box 11 through the water injection hose 14, and use the high specific heat capacity of water to store solar heat during the day and release it slowly at night to reduce heating demand;
[0039] Summer mode: Low-temperature water is injected at night to absorb heat from inside wall 1, and heated water is discharged through the drain during the day to reduce indoor cooling load;
[0040] Freeze protection: In extremely cold climates, the water inside the cavity box 11 can be drained and regulated by the electrically controlled drain valve 13 to prevent freezing and expansion that could damage the structure.
[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.
Claims
1. A passive house wall insulation structure, comprising a wall (1) and a light steel keel (2), characterized in that: A light steel keel (2) is fixed on the wall (1). An insulation layer (4) is provided on the outside of the light steel keel (2). The insulation layer (4) is fixedly connected to the light steel keel (2) through anchors (12). A heat insulation layer (5) is connected to the outside of the heat insulation layer (4) through an adhesive layer (9). A decorative layer (6) is provided on the outside of the heat insulation layer (5). A temperature sensor (7) is installed on the surface of the heat insulation layer (5). The temperature sensor (7) is connected to an external control system. The insulation layer (4) is provided with an adjustable cavity box (11). The upper end of the adjustable cavity box (11) is connected to a water injection hose (14), which is connected to an external water pump. The lower end of the adjustable cavity box (11) is connected to a drain pipe (17), and the outer end of the drain pipe (17) extends from the front surface of the insulation layer (4). An electrically controlled drain valve (13) is installed on the outer end of the drain pipe (17), which is connected to an external control system.
2. The passive house wall insulation structure according to claim 1, characterized in that: The regulating cavity box (11) has multiple sets of heat-conducting fins (16) evenly arranged on its front and rear sides, and the heat-conducting fins (16) are embedded inside the insulation layer (4).
3. The passive house wall insulation structure according to claim 2, characterized in that: The adjustable cavity box (11) is vertically and evenly provided with multiple sets of stiffening plates (15). The upper and lower ends of the stiffening plates (15) are spaced from the inner wall of the adjustable cavity box (11), and their front and rear sides are fixedly connected to the adjustable cavity box (11).
4. The passive house wall insulation structure according to claim 1, characterized in that: The area between the wall (1), the light steel keel (2) and the insulation layer (4) is filled with rock wool felt (3).
5. The passive house wall insulation structure according to claim 1, characterized in that: The insulation layer (4) has rubber and plastic pads (8) bonded to both the front and rear sides.
6. The passive house wall insulation structure according to claim 1, characterized in that: A waterproof layer (10) is provided between the heat insulation layer (5) and the decorative layer (6), and the waterproof layer (10) is a waterproof and breathable membrane.
7. The passive house wall insulation structure according to claim 1, characterized in that: The insulation layer (4) is a graphite polystyrene board, and the heat insulation layer (5) is a vacuum insulation board.