Fabricated energy-saving and environment-friendly thermal insulation wall and construction method thereof

Abstract

The invention discloses an assembly type energy-saving and environment-friendly thermal insulation wall and a construction method thereof, and aims to provide an assembly type energy-saving and environment-friendly thermal insulation wall which is good in filling effect and capable of reserving a large filling space, and the assembly type energy-saving and environment-friendly thermal insulation wall is characterized in that a concrete layer and a thermal insulation mortar layer are poured and formed on the two sides of a thermal insulation layer respectively; the thermal insulation layer is composed of a plurality of thermal insulation units, the operation convenience degree of the thermal insulation layer composed of the thermal insulation units is larger than that of whole block filling firstly, then split filling is carried out, filling observation can be carried out on each area, and therefore the thermal bridge effect is reduced, each thermal insulation unit is wrapped by an elastic wrapping material to form an elastic wrapping body, and the thermal insulation effect is improved. According to the invention, the elastic coating body is filled with a proper amount of thermal insulation fluid and is sealed, and after the elastic coating body is filled with the thermal insulation fluid, the thermal insulation fluid forms radial expansion on the elastic coating body, so that the interlayer is filled, and the thermal insulation structure is suitable for the technical fields of buildings and construction.

Description

Technical Field

[0001] This invention relates to the field of building and construction technology, and more specifically, to a prefabricated, energy-saving, and environmentally friendly insulated wall and its construction method. Background Technology

[0002] In the energy consumption composition of a building's entire life cycle, the operation phase (especially heating, air conditioning, and ventilation) accounts for a considerable proportion and is a key link in energy conservation and emission reduction.

[0003] However, we also found that patent number CN113006325B, entitled "A Prefabricated Insulated Wall", uses foam filling blocks to form insulation between walls. For insulated walls, if the filling performance is insufficient, the main problem is that the insulation layer cannot make full contact with the wall. Therefore, we consider using insulation layers with other built-in filling materials, such as placing the covering material inside the wall before filling with insulation material. However, this method also has some problems. The covering material after filling may not be able to fully fill the wall, which can also lead to thermal bridging effect in the wall and affect insulation. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a prefabricated energy-saving and environmentally friendly thermal insulation wall with good filling effect and the ability to reserve a large filling space.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated energy-saving and environmentally friendly thermal insulation wall, comprising an insulation layer, a concrete layer and a thermal insulation mortar layer respectively disposed on both sides of the insulation layer, and a fixed assembly frame disposed outside the wall. The concrete layer and the thermal insulation mortar layer are respectively cast and formed on both sides of the insulation layer. The insulation layer is composed of a plurality of insulation units, each insulation unit being covered by an elastic covering material to form an elastic covering body, and filled with an appropriate amount of thermal insulation fluid for sealing. Each insulation unit also contains a component placed within the elastic covering body. The internal support is formed by arranging several support units in a square array to form a support layer, and then stacking the support layers 2-3 times. The support has a hollow structure, so that the insulation fluid can flow in the hollow structure when the insulation unit deforms. An elastic extension member is provided between two adjacent support layers to connect the layers. This is used to compress the support layer during the installation of the insulation layer and reduce its thickness. After installation, the insulation unit is filled with insulation fluid to increase its thickness and fit the inner and outer walls.

[0006] The present invention is further configured such that: the support includes an assembly plane connected to the two side walls of the covering body, the assembly plane is fixedly connected to the two side inner walls of the covering body, and the area of ​​the two side inner walls of the covering body is larger than the area of ​​the assembly plane; when the covering body is filled with heat-insulating fluid, the axial side wall of the covering body will deform with the amount of fluid filled, that is, after filling with heat-insulating fluid, the radial area of ​​the covering body will increase with the increase of the filling amount, but the axial width remains unchanged.

[0007] The present invention is further configured such that: the support unit includes a central component, four-legged support structures centered on the central component and respectively disposed on both sides of the central component, and a rubber body covering the central component and the four-legged support structures; the four-legged support structures include an X-axis support end face, which is on the same plane and forms a first connecting end face for connecting adjacent support units on the X-axis; the four-legged support structures also include a Y-axis support end face, which is on the same plane and forms a second connecting end face for connecting adjacent support units on the Y-axis; the four support structures are symmetrically distributed in pairs of two legs.

[0008] The present invention is further configured such that: the intermediate component is a hollow spherical structure, and the spherical structure is provided with a plurality of mounting holes; the four-legged support structure includes a support frame that is inserted into the mounting holes, a plurality of fixing rings arranged along the length direction of the support frame, and a rubber coating layer on the support frame by vulcanizing rubber material through a vulcanization process.

[0009] The present invention is further configured such that: the fixing ring is provided with a plurality of through holes for each supporting skeleton to pass through, the through holes are arranged in a ring array, and the supporting skeleton is distributed in a ring array.

[0010] By adopting the above technical solution, the following beneficial effects are achieved: 1. In the technical solution of this invention, the concrete layer and the thermal insulation mortar layer are respectively cast and formed on both sides of the thermal insulation layer. This is essentially the conventional operation of setting up a thermal insulation layer between the concrete layer and the thermal insulation mortar layer. Furthermore, by composing the thermal insulation layer into several thermal insulation units, the thermal insulation layer composed of each thermal insulation unit is more convenient to operate than filling a whole block. Secondly, the separate filling allows for observation of the filling of each area, thereby reducing the generation of thermal bridge effect. In order to achieve the formation of a thermal bridge after the filling fluid is applied... The filling between the layers is achieved by each insulation unit being covered by an elastic covering material to form an elastic covering body, and then filling the elastic covering body with an appropriate amount of insulation fluid to seal it. After filling the elastic covering body with insulation fluid, the insulation fluid causes the elastic covering body to expand radially, thereby filling the interlayer. In addition, each insulation unit is also provided with a support placed inside the elastic covering body. The support can provide support within the insulation unit and limit the deformation of the insulation unit in the thickness direction, thus affecting the radial expansion.

[0011] 2. Further, each support is configured as a support layer formed by arranging several support units in a square array, and the support layer is formed by stacking 2-3 times. The stacked support layer can increase the thickness of the support and facilitate the adjustment of the support strength. Moreover, in the technical solution of this invention, the support is a hollow structure, which allows the insulation fluid to flow in the hollow structure when the insulation unit deforms. An elastic extension member is provided between two adjacent support layers to connect the layers. This is used to compress the support layer during the installation of the insulation layer, reducing its thickness. After installation, the insulation unit is filled with insulation fluid, increasing its thickness, thereby allowing it to fit the inner and outer walls and thus achieving the stability of the insulation unit in the thickness direction.

[0012] 3. Furthermore, the present invention sets the support to include an assembly plane connected to the two side walls of the covering body. The assembly plane is fixedly connected to the two side inner walls of the covering body. The structure of the assembly plane can form an integral with the covering body, thereby reducing excessive filling force in the thickness direction. Therefore, the area of ​​the two side inner walls of the covering body is set to be larger than the area of ​​the assembly plane. When the covering body is filled with heat-insulating fluid, the axial side wall of the covering body will deform with the amount of fluid filled. That is, after filling with heat-insulating fluid, the radial area of ​​the covering body will increase with the increase of the filling amount, but the axial width remains unchanged, which greatly improves the filling effect between the layers, greatly improves the practicality, and also reduces the occurrence of thermal bridge effect.

[0013] 4. Furthermore, the present invention further configures the support unit as including a central component, four-legged support structures centered on the central component and respectively disposed on both sides of the central component, and a rubber body covering the central component and the four-legged support structures. This makes the internal structural strength of the support unit higher. By using the central component and the four-legged support structures as a skeleton and covering the components formed by them with the rubber body, the structure is increased. The four-legged support structure includes an X-axis support end face, which is on the same plane and forms a first connecting end face for connecting adjacent support units on the X-axis. The four-legged support structure also includes a Y-axis support end face, which is on the same plane and forms a second connecting end face for connecting adjacent support units on the Y-axis. The four support structures are symmetrically distributed in pairs of two legs. The above structure can be extended on the X-axis and Y-axis to realize the construction of multi-layer structures, greatly improving practicality and ensuring the stability of the support layer.

[0014] A construction method applicable to the above-mentioned prefabricated energy-saving and environmentally friendly thermal insulation wall, wherein S1, preparing sandwich insulation units: preparing a plurality of sandwich insulation units with insulation units according to the above structure for later use;

[0015] S2. Inner and outer wall construction: Clean the foundation surface, set the bottom waterproof layer, and place the pre-treated blocks on the mortar according to the required thickness of the inner and outer walls. Control the spacing between the inner and outer walls to ensure that the sandwich insulation unit can be placed in the sandwich and that the insulation unit can be in close contact with the inner and outer walls when filling the insulation fluid.

[0016] S3. Place the sandwich insulation unit: Place the assembled sandwich insulation unit against the outer wall and fill it with insulation fluid until the two end faces of the insulation unit are radially attached to the inner wall of the outer wall, and the radial area of ​​the covering will increase with the increase of the filling amount and extend into the wall.

[0017] S4. Repeat steps S2-S4, and build the inner and outer walls again on the existing inner and outer walls. Ensure that the height of the walls built again meets the extension space formed after the insulation unit is filled with insulation fluid. Place the insulation unit between the inner and outer walls and fill it with insulation fluid until the interlayer inside the wall is completely extended.

[0018] By adopting the above technical solution, beneficial effects are achieved. The insulation unit prepared using the above structure can realize the layered and multiple filling operations of the insulation unit, and realize the all-round filling between the wall layers, which greatly reduces the generation of thermal bridge effect and greatly improves practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of an embodiment of a prefabricated energy-saving and environmentally friendly thermal insulation wall and its construction method according to the present invention.

[0020] Figure 2 This invention relates to a prefabricated, energy-saving, and environmentally friendly thermal insulation wall and its construction method. Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the attached diagram, the following labels are used: 1. Insulation layer; 2. Concrete layer; 3. Insulation mortar layer; 10. Insulation unit; 101. Covering body; 11. Support; 12. Support unit; 111. Support layer; 112. Elastic extension member; 113. Assembly plane; 120. Central member; 121. Four-legged support structure; 122. Rubber body; 123. X-axis support end face; 124. First connecting end face; 125. Y-axis support end face; 126. Second connecting end face; 127. Support frame; 128. Fixing ring. Detailed Implementation

[0022] Reference Figures 1 to 2 The present invention provides a further description of an embodiment of a prefabricated energy-saving and environmentally friendly thermal insulation wall and its construction method.

[0023] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0025] A prefabricated, energy-saving, and environmentally friendly thermal insulation wall includes an insulation layer 1, a concrete layer 2 and a thermal insulation mortar layer 3 respectively disposed on both sides of the insulation layer 1, and a fixed assembly frame disposed outside the wall. The concrete layer 2 and the thermal insulation mortar layer 3 are respectively cast and formed on both sides of the insulation layer 1. The insulation layer 1 is composed of several insulation units 10. Each insulation unit 10 is covered by an elastic covering material to form an elastic covering body 101, and an appropriate amount of thermal insulation fluid is filled and sealed inside the elastic covering body 101. Each insulation unit 10 is also provided with a support 11 placed inside the elastic covering body 101. In the technical solution of this invention, casting the concrete layer 2 and the thermal insulation mortar layer 3 on both sides of the insulation layer 1 is actually the conventional operation of setting the insulation layer 1 between the concrete layer 2 and the thermal insulation mortar layer 3. Furthermore, by making the insulation layer 1 composed of several insulation units 10, the thermal insulation of each insulation unit 10 is... Layer 1 offers greater ease of operation than whole-piece filling. Furthermore, the segmented filling allows for observation of each area's filling process, reducing thermal bridging. To achieve filling between layers after fluid filling, each insulation unit 10 is covered with an elastic covering material to form an elastic covering 101. An appropriate amount of insulating fluid is then filled and sealed within the elastic covering 101. Filling the elastic covering 101 with insulating fluid causes radial expansion, thus filling the interlayer. Each insulation unit 10 also includes a support 11 placed within the elastic covering 101. The support 11 provides support within the insulation unit 10 and restricts deformation in the thickness direction, thus affecting radial expansion.

[0026] Furthermore, each support 11 is formed by arranging several support units 12 in a square array to form a support layer 111, and the support layer 111 is formed by stacking 2-3 times. The support 11 has a hollow structure, so that the insulation fluid can flow in the hollow structure when the insulation unit 10 deforms. An elastic extension member 112 is provided between two adjacent support layers 111 to connect the layers. This is used to compress the support layer 111 during the installation of the insulation layer 1, reducing its thickness. After installation, the insulation unit 10 is filled with insulation fluid to increase its thickness and fit the inner and outer walls. Furthermore, each support 11 is configured to be formed by arranging several support units 12 in a square array to form a support layer 11. After step 1, the support layer 111 is formed by stacking it 2-3 times. The stacked support layer 111 can increase the thickness of the support and facilitate the adjustment of the strength of the support. Moreover, in the technical solution of the present invention, the support 11 has a hollow structure, so that the insulation fluid can flow in the hollow structure when the insulation unit 10 deforms. An elastic extension member 112 is provided between two adjacent support layers 111 to connect the layers. This is used to compress the support layer 111 during the installation of the insulation layer 1, thereby reducing the thickness. After the installation is completed, the insulation unit 10 is filled with insulation fluid to increase the thickness, thereby fitting the inner and outer walls and achieving the stability of the insulation unit 10 in the thickness direction.

[0027] The elastic extension member 112 is designed to allow for a certain elastic deformation space between the layers of the support layer 111. During installation, compression can be applied, resulting in zero spacing between the layers. After the fluid is applied, the spacing between the layers increases, thus creating resistance against the wall. Alternatively, the elastic extension member 112 can function as a telescopic structure, where the layers are in close contact when not subjected to the force of the fluid, and a certain spacing is formed when subjected to the force of the fluid. In this embodiment of the invention, the aim is to provide a structure that can limit the thickness of the support layer 111 while also having a deformation space in the thickness direction.

[0028] Furthermore, the support 11 includes an assembly plane 113 connected to the two side walls of the covering body 101. The assembly plane 113 is fixedly connected to the two side inner walls of the covering body 101, and the area of ​​the two side inner walls of the covering body 101 is larger than the area of ​​the assembly plane 113. When the covering body 101 is filled with insulating fluid, the axial sidewalls of the covering body 101 will deform with the amount of fluid filled. That is, after filling with insulating fluid, the radial area of ​​the covering body 101 will increase with the increase of the filling amount, but the axial width remains unchanged. In this invention, the support 11 is configured to include the assembly plane 113 connected to the two side walls of the covering body 101, and the assembly plane 113 and the inner wall of the covering body 101 are fixedly connected to the inner wall of the covering body 101. The inner walls on both sides of the covering body 101 are fixedly connected, and the structure of the assembly plane 113 can form an integral with the covering body 101, thereby reducing excessive filling force in the thickness direction. Therefore, the area of ​​the inner walls on both sides of the covering body 101 is set to be larger than the area of ​​the assembly plane 113. When the covering body 101 is filled with thermal insulation fluid, the axial sidewall of the covering body 101 will deform with the amount of fluid filled. That is, after filling with thermal insulation fluid, the radial area of ​​the covering body 101 will increase with the increase of the filling amount, but the axial width remains unchanged, which greatly improves the filling effect between the layers, greatly enhances the practicality, and also reduces the occurrence of thermal bridge effect.

[0029] Further, the support unit 12 includes a central component 120, four-legged support structures 121 centered on the central component 120 and respectively disposed on both sides of the central component 120, and a rubber body 122 covering the central component 120 and the four-legged support structures. The four-legged support structure 121 includes an X-axis support end face 123, which is on the same plane and forms a first connecting end face 124 for connecting adjacent support units 12 on the X-axis. The four-legged support structure 121 also includes a Y-axis support end face 125, which is on the same plane and forms a second connecting end face 126 for connecting adjacent support units 12 on the Y-axis. The four support structures are symmetrically distributed in pairs of two legs. Further, the present invention also configures the support unit 12 as including a central component 120, four-legged support structures 121 centered on the central component 120 and respectively disposed on both sides of the central component 120, and... The rubber body 122 covering the central component 120 and the four-corner support structures increases the internal structural strength of the support unit 12. Using the central component 120 and the four-corner support structures 121 as a skeleton, and covering them with the rubber body 122, structural enhancement is achieved. The four-corner support structures 121 include an X-axis support end face 123, which is on the same plane and forms a first connecting end face 124 for connecting adjacent support units 12 on the X-axis. The four-corner support structures 121 also include a Y-axis support end face 125, which is on the same plane and forms a second connecting end face 126 for connecting adjacent support units 12 on the Y-axis. These four support structures are symmetrically distributed in pairs of two legs. This structure allows for expansion along the X and Y axes, enabling multi-layered structure construction, greatly improving practicality, and ensuring the stability of the support layer 111.

[0030] Furthermore, the intermediate component is a hollow spherical structure with several mounting holes. The four-legged support structure 121 includes a support frame 127 that is inserted into the mounting holes, several fixing rings 128 arranged along the length of the support frame 127, and a rubber coating layer on which rubber material is vulcanized to the support frame 127 through a vulcanization process. In this embodiment of the invention, after connecting the intermediate component of the hollow spherical structure and the support frame 127, the support frame 127 is formed and fixed by the fixing rings 128, which makes the overall integrity of the support frame 127 higher, the adhesion better during rubber coating, the degree of integration better, the structural strength higher, and the practicality greatly improved.

[0031] Furthermore, the fixing ring 128 is provided with several through holes for each support frame 127 to pass through. The through holes are arranged in a ring array, and the support frames 127 are distributed in a ring array. By adopting the above structure, the fixing ring 128 and the support frames 127 are connected, which achieves the effect of ring fixing of each support frame 127. While improving the solidification effect of both, the strength of the support components is increased, and the rubber body 122 also has an attachment point, which improves the bonding strength and makes it more practical.

[0032] In this embodiment of the invention, the support unit 12 with the above-described structure is used, and the support strength brought by its structure determines the limiting strength of the insulation unit 10 in the thickness direction when filling fluid, so as to ensure that the support unit 12 can form its radial extension while ensuring that the relative thickness in the thickness direction remains unchanged, thereby achieving full filling of the interlayer, reducing the generation of thermal bridge effect, improving practicality, and increasing service life.

[0033] A construction method applicable to the above-mentioned prefabricated energy-saving and environmentally friendly thermal insulation wall, wherein S1, preparing sandwich insulation unit 10: preparing a plurality of sandwich insulation units 10 having insulation unit 10 according to the above structure for later use;

[0034] S2. Inner and outer wall construction: Clean the foundation surface, set the bottom waterproof layer, and place the pre-treated blocks on the mortar according to the required thickness of the inner and outer walls. Control the spacing between the inner and outer walls to ensure that the interlayer insulation unit 10 can be placed in the interlayer and that the insulation unit 10 can be in close contact with the inner and outer walls when the insulation fluid is filled into the insulation unit 10.

[0035] S3. Place the sandwich insulation unit 10: Place the assembled sandwich insulation unit 10 against the outer wall and fill it with insulation fluid until the two end faces of the insulation unit 10 are radially attached to the inner wall of the outer wall, and the radial area of ​​the covering body 101 will increase with the increase of the filling amount and extend into the wall.

[0036] S4. Repeat steps S2-S4, and build the inner and outer walls again on the existing inner and outer walls to ensure that the height of the walls is sufficient to meet the extension space formed after the insulation unit 10 is filled with insulation fluid. Place the insulation unit 10 between the inner and outer walls and fill it with insulation fluid until the wall interlayer is fully extended.

[0037] By adopting the above technical solution, the beneficial effects are that the insulation unit 10 prepared by the above structure can realize the layered and multiple filling operations of the insulation unit 10, realize the all-round filling between the wall layers, greatly reduce the generation of thermal bridge effect, and greatly improve practicality.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated, energy-saving, and environmentally friendly thermal insulation wall, comprising an insulation layer (1), a concrete layer (2) and a thermal insulation mortar layer (3) respectively disposed on both sides of the insulation layer (1), and a fixed assembly frame disposed outside the wall, wherein the concrete layer (2) and the thermal insulation mortar layer (3) are respectively cast and formed on both sides of the insulation layer (1), characterized in that, The heat preservation layer (1) is composed of a plurality of heat preservation units (10), each heat preservation unit (10) is covered by an elastic covering material to form an elastic covering body (101), and is filled with an appropriate amount of heat preservation fluid to be sealed, each heat preservation unit (10) is further provided with a support (11) arranged in the elastic covering body (101), each support (11) is formed by arranging a plurality of support units (12) in a square array to form a support layer (111), and the support layer (111) is formed by 2-3 times of superposition, and the support (11) is a hollow structure, when the heat preservation unit (10) deforms, the heat preservation fluid can flow in the hollow structure, and the elastic extension member (112) is arranged between two adjacent support layers (111) to connect the layers, so as to form extrusion on the support layer (111) when the heat preservation layer (1) is installed, and the thickness is reduced; after the installation is completed, the heat preservation unit (10) is filled with heat preservation fluid, and the thickness is increased to fit the inner and outer wall bodies.

2. The prefabricated energy-saving and environment-friendly thermal insulation wall according to claim 1, characterized in that, The support (11) includes an assembly plane (113) connected with the two side walls of the covering body (101), the assembly plane (113) and the two side inner walls of the covering body (101) are fixedly connected, and the area of the two side inner walls of the covering body (101) is greater than the area of the assembly plane (113), when the covering body (101) is filled with heat preservation fluid, the axial side wall of the covering body (101) will deform with the amount of filled fluid, that is, after the heat preservation fluid is filled, the radial area of the covering body (101) will increase with the increase of the filling amount, but the axial width remains unchanged.

3. The prefabricated energy-saving and environment-friendly thermal insulation wall according to claim 2, characterized in that, The support unit (12) includes a center member (120), four leg support structures (121) arranged on both sides of the center member (120) and centered on the center member (120), and a rubber body (122) wrapped outside the center member (120) and the four leg support structures, the four leg support structures (121) include an X-axis support end face (123), and the X-axis support end face (123) is on the same plane and forms a first connecting end face (124) for connecting adjacent support units (12) on the X-axis; the four leg support structures (121) also include a Y-axis support end face (125), and the Y-axis support end face (125) is on the same plane and forms a second connecting end face (126) for connecting adjacent support units (12) on the Y-axis, and the four support structures are symmetrically distributed in two groups of one foot each.

4. The prefabricated energy-saving and environment-friendly thermal insulation wall according to claim 3, characterized in that, The intermediate member is a hollow spherical structure, and a plurality of mounting holes are arranged on the spherical structure, the four leg support structures (121) include a support skeleton (127) inserted into the mounting holes, a plurality of fixing rings (128) arranged along the length direction of the support skeleton (127), and a rubber coating layer formed by vulcanizing the rubber material to the support skeleton (127) through a vulcanization process.

5. The prefabricated energy-saving and environment-friendly thermal insulation wall according to claim 4, characterized in that, A plurality of through holes are arranged on the fixing ring (128) for the support skeleton (127) to pass through, the through holes are arranged in a ring array, and the support skeleton (127) is arranged in a ring array.

6. A construction method for the fabricated energy-saving and environment-friendly thermal insulation wall body according to any one of claims 1-5, characterized in that, S1, preparation of sandwich insulation unit (10): according to the above structure, several sandwich insulation units (10) with insulation unit (10) are prepared for use; S2, inner and outer wall building: clean the surface of the foundation, set the bottom waterproof layer, according to the thickness size of the inner and outer wall, place the pretreated block on the mortar, control the spacing between the inner and outer wall, ensure that the sandwich insulation unit (10) can be placed in the sandwich, and when the insulation unit (10) is filled with insulation fluid, the insulation unit (10) and the inner and outer wall can be adhered; S3, placing sandwich insulation unit (10): place the assembled sandwich insulation unit (10) on the outer wall and fill it with insulation fluid until the two side faces of the insulation unit (10) are radially adhered to the inner wall of the outer wall, and the radial area of the cladding body (101) will increase with the increase of the filling amount, and will be extended in the wall; S4, cycle steps S2-S4, build the inner and outer wall on the original inner and outer wall again, ensure that the height of the wall building meets the extension space formed after the insulation unit (10) is filled with insulation fluid, continue to place the insulation unit (10) between the inner and outer wall, and fill the insulation fluid, until the complete extension of the sandwich in the wall.

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