Prefabricated building wall, prefabricated building, and installation and maintenance methods thereof

Abstract

The present invention relates to a prefabricated building wall, a prefabricated building, and an installation method and a maintenance method thereof. The prefabricated building wall includes: a support unit configured with an insertion notch; a gravity heat pipe having a connected evaporation section and a condensation section, the evaporation section being disposed on the support unit and located on the outdoor side of the support unit, the condensation section passing through the insertion notch and extending into the indoor side of the support unit; and a thermal insulation board disposed on the support unit and located on the outdoor side of the support unit and the evaporation section, the position of the thermal insulation board corresponding to the evaporation section being provided with an avoidance notch for the gravity heat pipe to pass through, and at least part of the structure of the evaporation section being exposed to the outside through the avoidance notch. The prefabricated building wall, the prefabricated building, and the installation method and the maintenance method thereof provided in the present invention can not only achieve heating, but also be easy to install, disassemble, and maintain.

Description

Technical Field

[0001] The present invention relates to the field of building structures, and in particular to a prefabricated building wall, a prefabricated building, and an installation method and a maintenance method thereof. Background Art

[0002] With the popularization of light prefabricated building technology, the application potential of the integration technology of the envelope structure and renewable energy in nearly zero-energy buildings has become increasingly prominent. In areas with rich solar energy resources and heating requirements, common light prefabricated passive solar houses often increase the window-wall ratio of the facade to utilize the solar heat energy. Although the indoor can obtain the heat of sunlight during the day, the heat loss at night is relatively serious. Therefore, it is difficult to reduce the heating energy consumption solely by the design of the window-wall ratio of the traditional envelope structure.

[0003] The research and application of passive flat gravity heat pipes effectively solve the above problems. This structure is integrated into the wall, which can enable the opaque envelope structure to effectively utilize solar energy for passive heat gain. It can conduct solar heat into the room during the day to increase the indoor temperature, thereby solving part of the heating problem. The flat gravity heat pipe is bent into an L shape, divided into an evaporation section and a condensation section. By filling the internal cavity of the heat pipe with a gas-liquid phase change material, the two processes of the evaporation section being heated by sunlight and the condensation section convecting heat to the indoor are realized in sequence. And through the phase change process of the gas-liquid phase change material, the above two processes are cycled repeatedly, so as to continuously convert solar energy into heat energy and transmit it into the room during the day when the heat pipe is irradiated by the sun. The process of the passive flat gravity heat pipe using solar heat does not consume additional energy, and can achieve the purpose of energy conservation and emission reduction.

[0004] However, in previous building practices, heat pipes were usually buried in heavy material walls, and the application of heat pipes in heavy material walls mostly involved wet operations, which consumed a large amount of time and labor; in addition, when the heat pipe was damaged, it was very difficult to inspect, repair and replace the wet operation wall system. Summary of the Invention

[0005] Based on this, the embodiments of the present application provide a prefabricated building wall, a prefabricated building, and an installation method and a maintenance method thereof that can not only achieve heating, but also be easy to install, disassemble, and maintain.

[0006] The first aspect of the embodiments of the present application provides a prefabricated building wall, including:

[0007] A support unit, configured with an insertion notch;

[0008] A gravity heat pipe, having an evaporation section and a condensation section that are connected and communicated. The evaporation section is arranged on the support unit and located on the outdoor side of the support unit, and the condensation section passes through the insertion notch and extends into the indoor side of the support unit;

[0009] The heat insulation board is arranged on the support unit and is located on the outdoor side of the support unit and the evaporation section. An avoidance notch for the gravity heat pipe to pass through is provided at the position of the heat insulation board corresponding to the evaporation section, and at least part of the structure of the evaporation section is exposed to the outside through the avoidance notch.

[0010] In one embodiment, the support unit includes a first support unit and a second support unit arranged at an angle, and the insertion notch is located at the intersection position of the first support unit and the second support unit;

[0011] The evaporation section is arranged on the outdoor side surface of the first support unit, and the condensation section passes through the insertion notch and is located on the indoor side of the second support unit.

[0012] In one embodiment, the first support unit includes a first wall skeleton and a first support plate connected to the outdoor side of the first wall skeleton, and the evaporation section of the gravity heat pipe is arranged on the first support plate.

[0013] In one embodiment, the number of gravity heat pipes is multiple, and the multiple gravity heat pipes are arranged at intervals in the height direction of the prefabricated building wall;

[0014] Each gravity heat pipe is fixed to the first support plate through at least one first fastener.

[0015] In one embodiment, a light-transmitting window that can be opened and closed is provided at the avoidance notch.

[0016] In one embodiment, one end of the condensation section is connected to one end of the evaporation section, and the other end of the condensation section extends in a direction away from the evaporation section, so that the gravity heat pipe is configured as an "L" - shaped structure;

[0017] The installation height of the condensation section is higher than that of the evaporation section.

[0018] In one embodiment, the prefabricated building wall further includes a phase - change material unit, and the phase - change material unit is arranged on the indoor side of the second support unit and is attached to the condensation section.

[0019] In one embodiment, the phase - change material unit is clamped between the indoor side surface of the second support unit and the condensation section.

[0020] In one embodiment, the second support unit includes a second wall skeleton and a second support plate connected to the indoor side of the second wall skeleton, and the phase - change material unit is arranged on the second support plate.

[0021] In one embodiment, the phase - change material unit is fixed to the second support plate through at least one second fastener, and the condensation section overlaps at least part of the second fasteners.

[0022] In the second aspect of the embodiments of the present application, a prefabricated building is provided, including the prefabricated building wall described above.

[0023] In the third aspect of the embodiments of the present application, an installation method of a prefabricated building is provided, including:

[0024] Providing a support unit, the support unit being configured with an insertion notch;

[0025] Opening an avoidance notch on the insulation board and installing the insulation board on the outdoor side of the support unit;

[0026] Moving the gravity heat pipe through the avoidance notch towards the support unit, enabling the condensation section of the gravity heat pipe to extend into the indoor side of the support unit through the insertion notch, and installing the evaporation section of the gravity heat pipe on the outdoor side of the support unit, wherein at least part of the structure of the evaporation section is exposed to the outside through the avoidance notch.

[0027] In one embodiment, the support unit includes a first support unit and a second support unit arranged at an angle, and the insertion notch is located at the junction position of the first support unit and the second support unit;

[0028] The steps of enabling the condensation section to extend into the indoor side of the support unit through the insertion notch and installing the evaporation section on the outdoor side of the support unit specifically include:

[0029] Enabling the condensation section to extend into the indoor side of the second support unit through the insertion notch and installing the evaporation section on the outdoor side surface of the first support unit.

[0030] In one embodiment, before enabling the condensation section to extend into the indoor side of the second support unit through the insertion notch and installing the evaporation section on the outdoor side surface of the first support unit, it further includes:

[0031] Providing a phase change material unit;

[0032] Installing the phase change material unit on the indoor side of the second support unit.

[0033] In the fourth aspect of the embodiments of the present application, an overhaul method of a prefabricated building is provided, the prefabricated building being the prefabricated building described above;

[0034] The overhaul method includes:

[0035] Removing the faulty gravity heat pipe through the avoidance notch;

[0036] Reinstalling the repaired gravity heat pipe or a brand-new gravity heat pipe through the avoidance notch to the outdoor side of the support unit.

[0037] In one embodiment, the prefabricated building wall further includes an indoor decorative panel and a phase change material unit disposed on the indoor side of the support unit. The indoor decorative panel is disposed on the support unit and blocks the indoor sides of the support unit, the condensation section, and the phase change material unit.

[0038] The maintenance method further includes:

[0039] Remove at least part of the indoor decorative panel to expose the condensation section and the phase change material unit;

[0040] Remove the gravity heat pipe through the avoidance notch;

[0041] Perform maintenance or replacement on the phase change material unit.

[0042] Beneficial effects of the above-mentioned prefabricated building wall, prefabricated building, and its installation method and maintenance method:

[0043] By providing a gravity heat pipe, the gravity heat pipe is divided into an evaporation section and a condensation section. At least part of the structure of the evaporation section is exposed to the outside through the avoidance notch, and the condensation section passes through the insertion notch and extends into the indoor side of the support unit. In this way, on the one hand, by filling the internal cavity of the gravity heat pipe with a gas-liquid phase change material, two processes can be sequentially realized: the evaporation section absorbs heat under sunlight irradiation on the outdoor side, and the condensation section convectively releases heat to the indoor side. Through the phase change process of the gas-liquid phase change material, the above two processes can be cycled repeatedly, so that solar energy can be continuously converted into heat energy and transmitted into the room during the day when the gravity heat pipe is irradiated by the sun, realizing the heating function of the prefabricated building wall. On the other hand, the insulation board is provided with an avoidance notch for the gravity heat pipe to pass through at the position corresponding to the evaporation section. During maintenance or installation, the gravity heat pipe can be installed on the support unit through this avoidance notch, or the gravity heat pipe can be removed and taken out through this avoidance notch. Therefore, it is easy to install, disassemble, and convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic exploded view of the prefabricated building provided by the embodiment of the present application;

[0045] Figure 2 is a top view of the prefabricated building wall provided by the embodiment of the present application;

[0046] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0047] Figure 4 is Figure 2 a cross-sectional view taken along line B-B in

[0048] Figure 5 is a schematic structural view of the gravity heat pipe in the prefabricated building wall provided by the embodiment of the present application;

[0049] Figure 6 Schematic diagram of the installation structure of the gravity heat pipe in the prefabricated building wall provided by the embodiment of the present application;

[0050] Figure 7 Schematic diagram of the matching structure of the gravity heat pipe and the first fastener in the prefabricated building wall provided by the embodiment of the present application;

[0051] Figure 8 Schematic diagram of the matching structure of the gravity heat pipe and the first fastener in the prefabricated building wall provided by the embodiment of the present application;

[0052] Figure 9 Schematic diagram of the structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application;

[0053] Figure 10 Schematic diagram of the installation structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application;

[0054] Figure 11 Schematic diagram of the installation structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application;

[0055] Figure 12 Schematic diagram of the prefabricated building wall as viewed from the outdoor side provided by the embodiment of the present application;

[0056] Figure 13 Schematic diagram of the prefabricated building wall as viewed from the indoor side provided by the embodiment of the present application;

[0057] Figure 14 Schematic diagram of the process of the installation method of the prefabricated building provided by the embodiment of the present application;

[0058] Figure 15 Schematic diagram of the structure of the second wall skeleton installed in the installation method of the prefabricated building provided by the embodiment of the present application;

[0059] Figure 16 Schematic diagram of the structure of installing the second support plate on the second wall skeleton in the installation method of the prefabricated building provided by the embodiment of the present application;

[0060] Figure 17 Schematic diagram of the process of the maintenance method of the prefabricated building provided by the embodiment of the present application;

[0061] Figure 18 Schematic diagram of the structure for temperature testing of the gravity heat pipe;

[0062] Figure 19 Schematic diagram of removing the first fastener in the maintenance method of the prefabricated building provided by the embodiment of the present application;

[0063] Figure 20 Schematic structural diagram of removing the second fastener in the inspection method of the prefabricated building provided by the embodiment of the present application;

[0064] Figure 21 Schematic structural diagram of removing the foaming agent in the inspection method of the prefabricated building provided by the embodiment of the present application;

[0065] Figure 22 Schematic structural diagram of removing the damaged gravity heat pipe in the inspection method of the prefabricated building provided by the embodiment of the present application;

[0066] Figure 23 Schematic structural diagram of the phase change material unit leaking liquid;

[0067] Figure 24 Schematic structural diagram of the damaged phase change material box;

[0068] Figure 25 Schematic structural diagram of removing the damaged phase change material box in the inspection method of the prefabricated building provided by the embodiment of the present application.

[0069] Explanation of the reference numerals in the drawings:

[0070] 100, prefabricated building; 110, prefabricated building wall; 120, indoor side wall; 130, support unit; 131, first support unit; 1311, first wall skeleton; 132, second support unit; 1321, second wall skeleton; 140, insertion notch; 1, gravity heat pipe; 2, phase change material unit; 201, phase change material box; 3, first fastener; 4, second fastener; 5, second support plate; 6, heat preservation board; 7, extruded polystyrene heat insulation board; 8, first support plate; 9, light-transmitting window; 91, avoidance notch; 10, indoor side elevation decorative panel; 11, indoor side perforated board; 12, indoor decorative panel hanging groove; 13, horizontal keel; 14, vertical keel; 15, support frame; 16, indoor side roof decorative panel; 17, indoor side floor decorative panel; 18, evaporation section; 19, condensation section; 20, corner of the gravity heat pipe; 21, gasket; 22, temperature tester; 23, temperature test point; 24, damaged gravity heat pipe; 25, tool; 26, foaming agent; 27, liquid leakage; 28, damaged phase change material box. Detailed implementation manners

[0071] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings. A lot of specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0073] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0076] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0077] In previous building practices, heat pipes were usually buried in heavy-material walls, which had problems such as slow construction speed, poor integration effect, damage to the performance of the enclosure structure (structural stability, thermal insulation performance or airtightness performance), inability to regulate heat storage and release during the day, at night or in different seasons, and inconvenient inspection and maintenance. And how to integrate flat gravity heat pipes based on efficient solar energy utilization into lightweight prefabricated nearly zero-energy buildings in cold regions through reasonable structural design will be a major issue faced today.

[0078] At the laboratory research level, previous integrated structures of heat pipes and walls mostly focused on the solar energy utilization ability of the heat pipes themselves, and there was less research on the integrated design of the wall system, which led to the difficulty of applying flat gravity heat pipes in actual building projects and their promotion. At the level of photothermal utilization of heat pipes, the working time of flat gravity heat pipes is during the day (when there is sufficient radiation), which results in more heat gain indoors during the day and no available heat at night, that is, there is a certain time difference between the supply and demand in the solar energy photothermal utilization process, and this process causes discomfort in the indoor thermal environment (too much heat during the day and no heat supply at night).

[0079] In terms of inspection and maintenance, the previous applications of flat gravity heat pipes in walls were mostly wet operations, which consumed a large amount of time and manpower; in addition, when the heat pipes were damaged, it was difficult to inspect, repair and replace the wet-operation wall system, which shortened the service life of the wall structure and increased the building energy consumption load.

[0080] Based on the above problems, in the prefabricated building wall, prefabricated building, its installation method and maintenance method provided by the embodiments of the present application, the rapid dry operation construction of the wall-implanted heat pipe, that is, the gravity heat pipe, is realized through the mutual overlap of each functional module and the filling of gaps with foaming glue, improving the construction efficiency and saving labor and material costs.

[0081] In addition, the embodiment of the present application effectively utilizes the passive heat gain capacity of the gravity heat pipe, thereby reducing the building heating energy consumption during the building operation and maintenance, and will not damage other wall components. In addition, a phase change material unit is introduced in the embodiment of the present application. The phase change material unit is attached to the gravity heat pipe. Excessive heat of the gravity heat pipe during the day can be temporarily stored in the phase change material box and released into the room after a delay, effectively reducing the peak and filling the valley of the indoor temperature. At the same time, in terms of subsequent inspection and maintenance, the present application also has the advantages of not damaging other components of the prefabricated building before and after inspection and not affecting the thermal insulation and airtight performance of the prefabricated building.

[0082] The prefabricated building wall, prefabricated building, its installation method and inspection method provided by the embodiment of the present application can be used in the enclosure structure system of a lightweight prefabricated nearly zero-energy building, and are applicable to lightweight prefabricated buildings with a large amount of solar radiation during the day. Its advantages include rapid and convenient construction, integration of thermal insulation and airtightness, reduction of building heating energy consumption, optimization of the indoor thermal environment, convenience for inspection and maintenance, etc. Therefore, it has significant economic, environmental, social benefits and popularization value.

[0083] The following will describe the prefabricated building wall, prefabricated building, its installation method and inspection method of the present application with reference to the accompanying drawings.

[0084] Figure 1 It is a schematic exploded view of the prefabricated building provided by the embodiment of the present application.

[0085] Referring to Figure 1 , the first aspect of the embodiment of the present application provides a prefabricated building 100, including a prefabricated building wall 110, an indoor side wall 120 (only the skeleton is shown, and the wall surface structure is not shown), etc. The indoor side wall 120 is a wall located inside the prefabricated building 100. A plurality of prefabricated building walls 110 and the indoor side wall 120 together enclose the wall of the prefabricated building 100. In addition, inside the prefabricated building 100, an indoor side roof panel 16 and an indoor side floor panel 17 are respectively provided at the top and bottom of the room.

[0086] The following will describe the structure of the prefabricated building wall 110 in detail with reference to the accompanying drawings.

[0087] In the embodiment of the present application, continue to refer to Figure 1, the prefabricated building wall 110 includes a support unit 130, a gravity heat pipe 1, and a thermal insulation board 6. Among them, the support unit 130 is configured with an insertion notch 140. The gravity heat pipe 1 has a connected evaporation section 18 and a condensation section 19. The evaporation section 18 is disposed on the support unit 130 and is located on the outdoor side of the support unit 130. The condensation section 19 penetrates through the insertion notch 140 and extends into the indoor side of the support unit 130. The thermal insulation board 6 is disposed on the support unit 130 and is located on the outdoor side of the support unit 130 and the evaporation section 18. The thermal insulation board 6 is provided with an avoidance notch 91 for the gravity heat pipe 1 to pass through at a position corresponding to the evaporation section 18, and at least part of the structure of the evaporation section 18 is exposed to the outside through the avoidance notch 91.

[0088] In the above solution, by setting the gravity heat pipe 1, the gravity heat pipe 1 is divided into an evaporation section 18 and a condensation section 19. At least part of the structure of the evaporation section 18 is exposed to the outside through the avoidance notch 91. The condensation section 19 penetrates through the insertion notch 140 and extends into the indoor side of the support unit 130. In this way, on the one hand, by filling the internal cavity of the gravity heat pipe 1 with a gas-liquid phase change material, the two processes of the evaporation section 18 receiving heat from the sun irradiation on the outdoor side and the condensation section 19 convecting heat to the indoor side can be sequentially realized, and through the phase change process of the gas-liquid phase change material, the above two processes can be cycled repeatedly, so as to continuously convert solar energy into heat energy and transmit it into the room during the day when the heat pipe is irradiated by the sun, realizing the heating function of the prefabricated building wall 110. On the other hand, the thermal insulation board 6 is provided with an avoidance notch 91 for the gravity heat pipe 1 to pass through at a position corresponding to the evaporation section 18. During maintenance or installation, the gravity heat pipe 1 can be installed on the support unit 130 through the avoidance notch 91, or the gravity heat pipe 1 can be removed and taken out through the avoidance notch 91. Therefore, it is easy to install, disassemble, and convenient for maintenance. In addition, a thermal insulation board 6 is also provided on the outdoor side of the support unit 130 to further improve the thermal insulation function of the prefabricated building wall 110.

[0089] Moreover, the construction process of the prefabricated building wall 110 in the above solution is efficient and low-cost. Specifically, different from the integration of the conventional wall-implanted heat pipes, which are all wet operations and require a lot of time to wait for the structure to stabilize, the construction process of the structure system of the prefabricated building wall 110 in the embodiment of the present application is a dry operation, realizing rapid installation and reducing the labor cost and construction difficulty.

[0090] Figure 2 This is a top view of the prefabricated building wall 110 provided by the embodiment of the present application. Figure 3 For Figure 2 the cross-sectional view along the A-A line in Figure 4 For Figure 2 the cross-sectional view along the B-B line in

[0091] Furthermore, in combination with Figure 1 、Figure 2 , Figure 3 , Figure 4 , the support unit 130 includes a first support unit 131 and a second support unit 132 arranged at an angle, and the insertion notch 140 is located at the junction of the first support unit 131 and the second support unit 132. The evaporation section 18 is arranged on the outdoor side surface of the first support unit 131, and the condensation section 19 passes through the insertion notch 140 and is located on the indoor side of the second support unit 132.

[0092] Furthermore, the first support unit 131 includes a first wall skeleton 1311 and a first support plate 8 connected to the outdoor side of the first wall skeleton 1311, and the evaporation section 18 of the gravity heat pipe 1 is arranged on the first support plate 8. In some embodiments, an extruded polystyrene insulation board 7 (i.e., XPS insulation board) may also be clamped between the outdoor side surface of the first wall skeleton 1311 and the first support plate 8. The first wall skeleton 1311 may be formed by a horizontal keel 13 and a vertical keel 14 connected in a crisscross manner. The insulation board 6 may be a SIP insulation board, i.e., a structural insulation board.

[0093] Figure 5 It is a schematic structural diagram of the gravity heat pipe in the prefabricated building wall provided by the embodiment of the present application. Figure 6 It is a schematic diagram of the installation structure of the gravity heat pipe in the prefabricated building wall provided by the embodiment of the present application.

[0094] Continue to refer to Figure 1 , optionally, the number of the gravity heat pipes 1 may be multiple, and the multiple gravity heat pipes 1 are arranged at intervals in the height direction of the prefabricated building wall 110; each gravity heat pipe 1 is fixed to the first support plate 8 through at least one first fastener 3. In addition, the gravity heat pipe 1 may be a flat gravity heat pipe.

[0095] In the embodiment of the present application, in combination with Figure 1 , Figure 5 , Figure 6 , one end of the condensation section 19 is connected to one end of the evaporation section 18, and the other end of the condensation section 19 extends in a direction away from the evaporation section 18, so that the gravity heat pipe 1 is configured as an "L" - shaped structure; the installation height of the condensation section 19 is higher than the installation height of the evaporation section 18. It can ensure that the prefabricated building 100 obtains heat passively during the day (the evaporation section 18 of the gravity heat pipe 1 absorbs heat, and the working medium vaporizes and rises to the condensation section 19 of the gravity heat pipe 1) and does not dissipate heat in the reverse direction at night (the working medium is in a liquid state and stays in the evaporation section 18 of the gravity heat pipe 1), which improves the utilization rate of renewable energy. Therefore, the working process of the gravity heat pipe 1 in the present application can achieve heat gain on the indoor side of the building envelope during the day and no heat dissipation from the indoor side to the outdoor side at night.

[0096] When specifically implemented, such as Figure 5 ,Figure 6 As shown, the evaporation section 18 and the condensation section 19 of the gravity heat pipe can be inclined upward relative to the horizontal direction, and both form an angle α with the horizontal direction. For the installation of the gravity heat pipe 1, the evaporation section 18 can be installed on the first support plate 8, and the condensation section 19 is located on the indoor side of the heat preservation plate 6 corresponding to the second support unit 132. The corner 20 of the gravity heat pipe is in contact with the first support plate 8, and its evaporation section 18 is also in contact with the outdoor side of the first support plate 8.

[0097] Figure 7 Schematic diagram of the cooperation structure of the gravity heat pipe and the first fastener in the prefabricated building wall provided by the embodiment of the present application, Figure 8 Schematic diagram of the cooperation structure of the gravity heat pipe and the first fastener in the prefabricated building wall provided by the embodiment of the present application.

[0098] For the connection between the gravity heat pipe 1 and the first support plate 8, reference can be made to Figure 7 、 Figure 8 . Specifically, when implemented, the bottom side of the evaporation section 18 of each gravity heat pipe 1 corresponds to two first fasteners 3. The first fastener 3 can be a screw, and the head of the screw is locally enlarged in diameter to press the edge of the evaporation section 18 against the first support plate 8.

[0099] Continue to refer to Figure 1 . Optionally, the second support unit 132 includes a second wall skeleton 1321 and a second support plate 5 connected to the indoor side of the second wall skeleton 1321. The second wall skeleton 1321 can be formed by horizontally and vertically intersecting horizontal keels 13 and vertical keels 14.

[0100] Figure 9 Schematic diagram of the structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application, Figure 10 Schematic diagram of the installation structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application;

[0101] Figure 11 Schematic diagram of the installation structure of the phase change material unit in the prefabricated building wall provided by the embodiment of the present application.

[0102] In the embodiment of the present application, in combination with Figure 1 、 Figure 9 、 Figure 10 、 Figure 11 , the prefabricated building wall 110 further includes a phase change material unit 2. The phase change material unit 2 is arranged on the indoor side of the second support unit 132 and is in contact with the condensation section 19. In this way, the excessive heat of the gravity heat pipe 1 during the day can be temporarily stored in the phase change material unit 2 through the condensation section 19 and released into the room with a delay, effectively leveling the peak and filling the valley of the indoor temperature.

[0103] The phase change material unit 2 can be installed on the second support plate 5. Specifically, in implementation, the phase change material unit 2 is fixed to the second support plate 5 by at least one second fastener 4, and the condensation section 19 overlaps at least part of the second fastener 4. Thus, the second fastener 4 also plays a role in supporting the condensation section 19.

[0104] Exemplarily, the phase change material unit 2 can include a plurality of phase change material boxes 201 as Figure 9 shown. For the installation of the phase change material box 201, for example, a plurality of depressions can be provided on the phase change material box 201, and gaskets 21 are provided in the depressions. The second fasteners 4 can pass through the gaskets 21 one by one and pass through the phase change material box 201 and be threadedly connected to the second support plate 5, so that each phase change material box 201 can be fixed to the second support plate 5. Of course, the installation position and number of the second fasteners 4 need to ensure that the phase change material box 201 can be fixed to the second support plate 5. On this premise, the positions and numbers of the corresponding depressions are not limited to Figure 9 the situation shown.

[0105] Further, with continued reference to Figure 11 , the phase change material unit 2 is clamped between the indoor side surface of the second support unit 132 and the condensation section 19. This facilitates the condensation section 19 to temporarily store the excessive heat during the day in the phase change material box 201 and delay the release into the room.

[0106] Figure 12 FIG. Figure 13 is a schematic view of the prefabricated building wall provided by the embodiment of the present application when viewed from the outdoor side,

[0107] Referring to Figure 1 , in the embodiment of the present application, in order to protect the avoidance notch 91, a light-transmitting window 9 that can be opened and closed can also be provided at the avoidance notch 91, Figure 12 in which, external light irradiates at least part of the structure of the evaporation section 18 through the light-transmitting window 9.

[0108] In addition, in combination with Figure 1 , Figure 13 , further, the prefabricated building wall 110 further includes a plurality of indoor side decorative panels, such as indoor side elevation decorative panels 10, indoor side perforated panels 11, etc. Each indoor side elevation decorative panel 10 can be respectively arranged on the indoor sides of the first support unit 131 and the second support unit 132. Indoor decorative panel hanging grooves 12 can be provided on the horizontal keel 13 to facilitate the fixation of the indoor side elevation decorative panels 10.

[0109] To facilitate the dissipation of heat from the condensation section 19 to the interior of the room, the decorative panel on the interior side of the condensation section 19 can be set as an interior side perforated plate 11 with a hole structure. When viewed from the interior side, the interior side facade decorative panel 10 and the interior side perforated plate 11 provided on the interior side of the second support unit 132 are arranged in parallel, and the interior side perforated plate 11 can be disposed on the interior side of the condensation section 19.

[0110] In the prefabricated building wall 110 provided by the embodiment of the present application, the passive gravity heat pipe 1 is integrated into the lightweight support unit 130. While giving full play to the passive thermal performance of the gravity heat pipe 1, it does not damage the mechanical stability, heat insulation performance and airtight performance of the support unit 130, and effectively reduces the heating energy consumption during the operation of the building.

[0111] On the other hand, on the basis of integrating the gravity heat pipe 1 in the prefabricated building wall 110, the use of the phase change material unit 2 plays a role of "peak shaving and valley filling" for the indoor thermal environment without occupying additional space. In addition, the entire construction process of the construction system of the prefabricated building wall 110 is a dry operation, realizing rapid installation and reducing the labor cost and construction difficulty.

[0112] Specifically, by making holes in the thermal insulation board 6 to form an avoidance notch 91, sufficient space is reserved for the evaporation section 18 of the gravity heat pipe 1. The thermal insulation board 6 and the extruded polystyrene thermal insulation board 7 have low heat transfer coefficients and play a role in wall thermal insulation. Foaming glue and other measures are adopted at the joints of each component to ensure the airtightness of the structure of the prefabricated building wall 110. In addition, the gravity heat pipe 1 and the phase change material unit 2 are used in combination to optimize the heat gain, storage and release performance of the lightweight prefabricated building wall 110. The relative position relationship between the thermal insulation board 6 and the gravity heat pipe 1 in the entire wall structure system includes two parts, namely, a part of the thermal insulation board 6 and the evaporation section 18 of the gravity heat pipe 1, and the combination of another part of the thermal insulation board 6 and the condensation section 19 of the flat gravity heat pipe 1. In the evaporation section 18 of the gravity heat pipe 1, a part of the thermal insulation board 6 corresponding to the evaporation section 18 needs to be located on the outdoor side. By setting the avoidance notch 91, the evaporation section 18 is exposed, so as to ensure that the evaporation section 18 receives sufficient solar radiation; in the condensation section 19 of the flat gravity heat pipe 1, another part of the thermal insulation board 6 corresponding to the condensation section 19 needs to be located on the outdoor side, so that the heat of the condensation section 19 can be effectively transferred to the indoor, reducing the heat loss to the outdoor. The gravity heat pipe 1 adopted by the prefabricated building wall 110 in the embodiment of the present application can convert solar energy into heat energy and transmit it to the indoor during the day to increase the room temperature. The phase change material unit 2 used in combination can also store excessive heat during the day and release it after sunset, effectively "shaving the peak and filling the valley" of the indoor temperature. The whole process of installing the prefabricated building wall 110 is a dry operation, and the construction efficiency is high. After the prefabricated building wall 110 is used for a period of time, it has the advantages of being convenient for later inspection of damage points and easy maintenance and replacement of components, without damaging the rest of the structure, and ensuring the overall thermal insulation performance and airtight performance of the wall system before and after building maintenance.

[0113] Furthermore, the prefabricated building wall 110 in the embodiment of the present application also has the following beneficial effects:

[0114] 1) It is convenient for maintenance and replacement of damaged components. By replacing components separately, the service life of the entire wall system is extended, and the cost can be effectively reduced. In the past wall structure, if the gravity heat pipe was damaged, the entire wall would lose the passive heat gain ability and could not be repaired or replaced, resulting in a short wall life.

[0115] 2) It is convenient and fast to repair damaged components: In the past, the gravity heat pipe was integrated into the heavy wall, and the condensation section of the heat pipe could not be touched by personnel (because it was inside the wall); the prefabricated building wall 110 in the embodiment of the present application can monitor the temperatures of the condensation section 19 and the evaporation section 18 of the gravity heat pipe 1 through the temperature tester 22 to judge whether it is damaged, and it will not affect the thermal insulation and airtight performance of the wall.

[0116] 3) Low noise level during construction and maintenance: In the past, heavy-structured wall construction generated a lot of noise; during the installation and maintenance of the prefabricated building wall 110 in the embodiments of the present application, no construction noise will be generated.

[0117] 4) Less manpower and energy required for installation and maintenance: In the past, the construction and maintenance of the enclosure structure required a lot of manpower and multiple motor equipment for construction; for the integration and replacement of the gravity heat pipe 1 of the prefabricated building wall 110 in the embodiments of the present application, only a small amount of labor is required to complete, and there is no need to consume electrical energy to drive equipment, effectively saving the energy consumption during the construction process and reducing the corresponding carbon emissions.

[0118] Figure 14 It is a schematic flow chart of the installation method of the prefabricated building provided by the embodiments of the present application.

[0119] Referring to Figure 14 , the second aspect of the embodiments of the present application provides an installation method for a prefabricated building 100, which is used to install the prefabricated building 100 in the foregoing embodiments.

[0120] The installation method includes:

[0121] S10. Provide a support unit, and the support unit is configured with an insertion notch;

[0122] S20. Open an avoidance notch on the insulation board and install the insulation board on the outdoor side of the support unit;

[0123] S30. Move the gravity heat pipe through the avoidance notch towards the support unit, so that the condensation section of the gravity heat pipe extends into the indoor side of the support unit through the insertion notch, and install the evaporation section of the gravity heat pipe on the outdoor side of the support unit, wherein at least part of the structure of the evaporation section is exposed to the outside through the avoidance notch.

[0124] In the above solution, in combination with Figure 1 , by installing the gravity heat pipe 1 on the support unit, solar energy can be continuously converted into heat energy and transmitted into the room during the day when the heat pipe is irradiated by the sun, realizing the heating function of the prefabricated building wall 110. On the other hand, through the avoidance notch 91 opened on the insulation board 6, the insulation board 6 is installed first, and the gravity heat pipe 1 is installed on the support unit 130 through the avoidance notch 91, so the installation process is relatively simple. During the use of the gravity heat pipe 1, if a failure occurs, the gravity heat pipe 1 can also be repaired or replaced through the avoidance notch 91, making the repair easier.

[0125] In an embodiment of the present application, exemplarily, as described above, the support unit 130 includes a first support unit 131 and a second support unit 132 arranged at an angle, and the insertion notch 140 is located at the intersection position of the first support unit 131 and the second support unit 132.

[0126] The steps of inserting the condensation section 19 into the indoor side of the support unit 130 through the insertion notch 140 and installing the evaporation section 18 on the outdoor side of the support unit 130 specifically include:

[0127] Insert the condensation section 19 into the indoor side of the second support unit 132 through the insertion notch 140, and install the evaporation section 18 on the outdoor side surface of the first support unit 131.

[0128] Further, before inserting the condensation section 19 into the indoor side of the second support unit 132 through the insertion notch 140 and installing the evaporation section 18 on the outdoor side surface of the first support unit 131, it further includes:

[0129] Provide a phase change material unit 2;

[0130] Install the phase change material unit 2 on the indoor side of the second support unit 132.

[0131] In addition, the following preparation steps need to be carried out before installation:

[0132] Based on the heat gain area of the evaporation section 18 of the gravity heat pipe 1, determine the avoidance notch 91 opened on the insulation board 6, that is, the window opening size of the light-transmitting window 9, to ensure that the evaporation section 18 of the gravity heat pipe 1 can obtain sufficient sunlight irradiation.

[0133] Determine the size of the light-transmitting window 9 that can be opened according to the size of the avoidance notch 91, and customize and process the light-transmitting window 9. Process the support frame 15, horizontal keel 13, vertical keel 14, indoor decorative panel hanging groove 12, indoor side elevation decorative panel 10, indoor side roof decorative panel 16, and indoor side floor decorative panel 17 into mutually matching sizes.

[0134] Process the L-shaped gravity heat pipe 1 in the factory, fill it with gas-liquid phase change material, and perform appropriate vacuum pumping treatment to make it have the ability to transfer heat to the indoor during the day and not dissipate heat to the outdoor at night.

[0135] At the construction site, cut the extruded polystyrene insulation board 7, the first support board 8, the indoor side elevation decorative panel 10, the indoor side roof decorative panel 16, the indoor side floor decorative panel 17, etc. into shape.

[0136] Like this, process components such as the insulation board 6, support frame 15, horizontal keel 13, and vertical keel 14 in the factory, and rapid assembly of the building structure can be achieved during on-site construction.

[0137] Figure 15 Schematic diagram of the structure of the second wall skeleton installed in the installation method of the prefabricated building provided by the embodiment of the present application. Figure 16 Schematic diagram of installing the second support plate on the second wall skeleton in the installation method of the prefabricated building provided by the embodiment of the present application.

[0138] The following gives a specific example to illustrate the installation method of the prefabricated building of this embodiment.

[0139] Combined with Figure 1 、 Figure 15 、 Figure 16 The components such as the support frame 15, the horizontal keel 13, and the vertical keel 14 are combined into the first wall skeleton 1311 and the second wall skeleton 1321, and then the insulation board 6 is fixedly connected to the outdoor sides of the first wall skeleton 1311 and the second wall skeleton 1321.

[0140] Furthermore, the second support plate 5 is laid between the horizontal keels 13 from the indoor side. For example, it can be snapped between two adjacent horizontal keels 13 to ensure that the subsequent installed phase change material unit 2 will not fall into the cavity.

[0141] Combined with Figure 1 、 Figure 10 、 Figure 11 Then, according to the angle and position of the condensation section 19 of the gravity heat pipe 1, the phase change material unit 2 is fixed to the second support plate 5 with the second fastener 4. The head of the second fastener 4 here does not fully fit the phase change material unit 2, and some redundant distance should be left to leave a certain flexible space for the subsequent fine adjustment of the installation position of the gravity heat pipe 1.

[0142] The extruded polystyrene insulation board 7 and the first support plate 8 are respectively placed in the avoidance notch 91, and at the corner 20 of the gravity heat pipe, a small gap is appropriately left, and this small gap forms an insertion notch 140. Subsequently, the evaporation section 18 of the gravity heat pipe 1 is inserted into the indoor side through the insertion notch 140, and the evaporation section 18 is made to fit the outdoor side of the first support plate 8, and the condensation section 19 is made to fit the indoor side of the phase change material unit 2.

[0143] After appropriately adjusting the relative positions of the gravity heat pipe 1 and the phase change material unit 2, the second fastener 4 is fixed so that the evaporation section 18 of the gravity heat pipe 1 fits closely with the first support plate 8, and the condensation section 19 fits closely with the phase change material unit 2 to ensure that the gravity heat pipe 1 will not loosen or fall off.

[0144] Use fast-drying foaming glue to fill the cavity between the periphery of the extruded polystyrene insulation board 7 and the first support plate 8 and the edge of the avoidance notch 91 of the insulation board 6 to ensure the airtightness of the entire wall structure. After waiting for the foaming glue to solidify, remove the excess glue traces.

[0145] Cover the indoor perforated plate 11 on the surface of the indoor condensation section 19, install and fix the indoor vertical facade decorative panel 10, the indoor floor decorative panel 17, and the indoor roof decorative panel 16, and fix the openable light-transmitting window 9 on the outdoor side.

[0146] In the above solution, first, complete the construction of the support unit 130 of the building structure composed of the support frame 15, the horizontal keel 13, the vertical keel 14, the insulation board 6, etc. Subsequently, integrate components such as the gravity heat pipe 1, the phase change material unit 2, the extruded polystyrene thermal insulation board 7, and the first support plate 8 into the support unit 130. Finally, install the openable and closable light-transmitting window 9 and the decorative panels with various decorative functions. The installation process is relatively simple.

[0147] On the indoor side, during the installation process, the second fastener 4 fixes the phase change material unit 2 on the second support plate 5. Exemplarily, the second fastener 4 can be a bolt. A certain distance is left between the head of the bolt and the phase change material unit 2, which can be used to support the condensation section 19 of the flat gravity heat pipe 1. After the condensation section 19 of the gravity heat pipe 1 is lapped on it, the bolt can be further fixed to ensure the close fit between the gravity heat pipe 1 and the phase change material unit 2. The second fastener 4 here is detachable, which is convenient for checking whether the phase change material unit 2 and the gravity heat pipe 1 are working properly. If the phase change material unit 2 or the heat pipe is damaged, it can be repaired and replaced, extending the service life of the structural system of the prefabricated building wall 110, and the replacement process will not cause damage to other structures.

[0148] On the outdoor side, after the gravity heat pipe 1 is inserted through the avoidance notch 91 of the insulation board 6, the arrangement position of the gravity heat pipe 1 can be determined according to requirements. Further, the first fastener 3 is used to support the gravity heat pipe 1 under the evaporation section 18. The first fastener 3 here is also detachable, which is convenient for subsequent maintenance.

[0149] Figure 17 It is a schematic flow chart of the maintenance method for the prefabricated building provided by the embodiment of the present application.

[0150] Combined with Figure 1 , Figure 17 , the third aspect of the embodiment of the present application provides a maintenance method for a prefabricated building, which is used to maintain the prefabricated building 100 in the foregoing embodiment. It should be noted that the structure, function, working principle, etc. of the prefabricated building 100 have been described in detail above and will not be repeated here.

[0151] The maintenance method for the prefabricated building provided by the embodiment of the present application includes:

[0152] S40. Remove the faulty gravity heat pipe through the avoidance notch;

[0153] S50. Reinstall the repaired gravity heat pipe or a brand-new gravity heat pipe through the avoidance notch to the outdoor side of the support unit.

[0154] In the above solution, the faulty gravity heat pipe 1 can be removed through the avoidance notch 91, and the repaired gravity heat pipe 1 or a brand-new gravity heat pipe 1 is reinstalled through the avoidance notch 91 to the outdoor side of the support unit 130. Therefore, when replacing or overhauling the gravity heat pipe 1, there is no need to destructively remove other structures of the prefabricated building wall, so the overhaul and replacement processes are relatively simple.

[0155] Furthermore, as mentioned above, the prefabricated building wall 110 further includes indoor decorative panels such as the indoor-side perforated plate 11. The indoor decorative panels are arranged on the support unit 130 and block the indoor side of the support unit 130, the condensation section 19, and the phase change material unit 2.

[0156] The above overhaul method further includes:

[0157] Remove at least part of the indoor decorative panels to expose the condensation section 19 and the phase change material unit 2.

[0158] Remove the gravity heat pipe 1 through the avoidance notch 91.

[0159] Overhaul or replace the phase change material unit 2.

[0160] Figure 18 It is a schematic structural diagram for temperature testing of the gravity heat pipe.

[0161] In the embodiments of the present application, combined with Figure 1 、 Figure 18 , after the prefabricated building wall 110 has been used for a period of time, the gravity heat pipe 1 or the phase change material unit 2 can be regularly inspected. The overhaul method of the gravity heat pipe 1 is to use a temperature tester 22 to measure the temperatures at the preset temperature test points 23 on the evaporation section 18 and the condensation section 19 of the heat pipe respectively on a sunny day during the day (when the facade solar radiation intensity is above 500 W / ㎡ for 10 consecutive minutes). When the temperature difference between the evaporation section 18 and the condensation section 19 is above 5 °C, it is determined that the gravity heat pipe 1 is damaged. When the temperature difference between the evaporation section 18 and the condensation section 19 is small, then the gravity heat pipe 1 is not damaged. The above inspection process is simple, convenient, and time-consuming, improving the inspection efficiency of the damaged part.

[0162] The following gives a specific example to illustrate the overhaul method of the prefabricated building 100 in this embodiment.

[0163] Figure 19 It is a schematic structural diagram for removing the first fastener in the overhaul method of the prefabricated building provided by the embodiments of the present application. Figure 20Schematic diagram of removing the second fastener in the maintenance method of the prefabricated building provided by the embodiment of the present application Figure 21 Schematic diagram of removing the foaming glue in the maintenance method of the prefabricated building provided by the embodiment of the present application Figure 22 Schematic diagram of removing the damaged gravity heat pipe in the maintenance method of the prefabricated building provided by the embodiment of the present application

[0164] Combined with Figure 1 、 Figure 19 、 Figure 20 As described above, when the gravity heat pipe 1 fails, the gravity heat pipe 1 is replaced and disassembled through the avoidance notch 91

[0165] First, open the light-transmitting window 9 on the outdoor side. As shown in Figure 19 、 Figure 20 , remove the first fastener 3 and the second fastener 4 in sequence, so that the gravity heat pipe 1 and the phase change material unit 2 lose the support points

[0166] Furthermore, referring to Figure 21 , use the tool 25 to remove the foaming glue 26 at the corner 20 of the gravity heat pipe

[0167] Referring to Figure 22 , take out the damaged gravity heat pipe 24, and then the new gravity heat pipe 1 can be installed on the first support plate 8

[0168] Figure 23 Schematic diagram of liquid leakage in the phase change material unit Figure 24 Schematic diagram of the damaged phase change material box Figure 25 Schematic diagram of removing the damaged phase change material box in the maintenance method of the prefabricated building provided by the embodiment of the present application

[0169] Combined with Figure 1 、 Figure 23 、 Figure 24 、 Figure 25 , the maintenance method of the phase change material unit 2 is to remove the perforated plate 11 on the indoor side and check whether there is liquid leakage in the phase change material unit 2 through observation. If there is liquid leakage 27, then the liquid leakage 27 will appear near the condensation section 19, and it is determined that the phase change material unit 2 is damaged, as shown in Figure 23 . If no liquid leakage 27 is found, then the phase change material unit 2 is not damaged

[0170] If the gravity heat pipe 1 or the phase change material box 201 is damaged, it can be repaired and replaced. First, repeat the steps of removing the gravity heat pipe 1 described above (the steps shown in Figures 19 - 22 ), draw out the gravity heat pipe 1 from the wall. As shown in Figure 24 , the damaged phase change material box 28 can be found by the observation method

[0171] As Figure 25 shown, remove the corresponding second fastener 4, and the damaged phase change material cartridge 28 can be removed and replaced. Remove the phase change material cartridge 201. Subsequently, replace the damaged component with a new phase change material cartridge.

[0172] Combined with Figure 1 , the present invention effectively enhances the heat storage, release and absorption capabilities of the wall by using the gravity heat pipe 1 and the phase change material cartridge 201 in the prefabricated building wall 110; it also optimizes the assembly construction and maintenance processes of the nearly zero-energy consumption building wall by adopting a rapid dry construction method and a convenient inspection and maintenance method. The present invention has a significant energy-saving effect, reduces carbon emissions and saves economic costs; it realizes a rapid construction process and has the advantage of being easy to repair.

[0173] Specifically, after the gravity heat pipe 1 and the phase change material unit 2 in the prefabricated building wall 110 are damaged or aged, the damaged parts can be quickly replaced, the service life of other components is extended, and building materials and costs are effectively saved. Moreover, the processes of inspection, replacement and maintenance are simple and rapid, without affecting the building airtightness and without damaging the insulation structure layer, thus effectively maintaining the building insulation performance.

[0174] In addition, the noise level generated during the construction and maintenance processes is low, ensuring a good acoustic environment in the building interior and the surrounding environment. Furthermore, except for the installation of the support frame 15, the horizontal keel 13 and the vertical keel 14, the remaining installation and maintenance links only require manual labor and do not require power-driven equipment, effectively saving the energy consumption during the construction process and reducing the corresponding carbon emissions.

[0175] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0176] The above-described embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. An assembled building wall, characterized in that, Comprising: A support unit configured with an insertion notch; A gravity heat pipe having a connected evaporation section and a condensation section, the evaporation section being disposed on the support unit and on the outdoor side of the support unit, and the condensation section passing through the insertion notch and extending into the indoor side of the support unit; A heat insulation board disposed on the support unit and on the outdoor side of the support unit and the evaporation section, the heat insulation board being provided with an avoidance notch for the gravity heat pipe to pass through at a position corresponding to the evaporation section, and at least a part of the structure of the evaporation section being exposed to the outside through the avoidance notch; The avoidance notch is used for: Installing the gravity heat pipe on the support unit through the avoidance notch during maintenance or installation, or removing and taking out the gravity heat pipe through the avoidance notch; The support unit includes a first support unit and a second support unit disposed at an angle, and the insertion notch is located at the junction of the first support unit and the second support unit; The evaporation section is disposed on the outdoor side surface of the first support unit, and the condensation section passes through the insertion notch and is located on the indoor side of the second support unit; The first support unit includes a first wall skeleton and a first support plate connected to the outdoor side of the first wall skeleton, and the evaporation section of the gravity heat pipe is disposed on the first support plate; One end of the condensation section is connected to one end of the evaporation section, and the other end of the condensation section extends in a direction away from the evaporation section so that the gravity heat pipe is configured in an "L" shape; The installation height of the condensation section is higher than the installation height of the evaporation section; The prefabricated building wall further includes a phase change material unit, and the phase change material unit is disposed on the indoor side of the second support unit and is attached to the condensation section; The phase change material unit is clamped between the indoor side surface of the second support unit and the condensation section.

2. The prefabricated building wall according to claim 1, characterized in that, The number of the gravity heat pipes is multiple, and the multiple gravity heat pipes are spaced apart in the height direction of the prefabricated building wall; Each of the gravity heat pipes is fixed to the first support plate by at least one first fastener.

3. The prefabricated building wall according to claim 1, characterized in that, A light-transmitting window that can be opened and closed is provided at the avoidance notch.

4. The prefabricated building wall according to claim 1, characterized in that, The second support unit includes a second wall skeleton and a second support plate connected to the indoor side of the second wall skeleton, and the phase change material unit is disposed on the second support plate.

5. The prefabricated building wall according to claim 4, wherein, The phase change material unit is fixed to the second support plate by at least one second fastener, and the condensation section overlaps at least a part of the second fastener.

6. An assembled building, characterized in that, Including the prefabricated building wall according to any one of claims 1-5.

7. An installation method for an assembled building, characterized in that, For installing the prefabricated building according to claim 6; The installation method of the prefabricated building includes: Providing a support unit configured with an insertion notch; Opening an avoidance notch on the heat insulation board and installing the heat insulation board on the outdoor side of the support unit; Move the gravity heat pipe through the avoidance notch towards the support unit, so that the condensation section of the gravity heat pipe extends into the indoor side of the support unit through the insertion notch, and install the evaporation section of the gravity heat pipe on the outdoor side of the support unit, wherein at least part of the structure of the evaporation section is exposed to the outside through the avoidance notch.

8. The installation method of the prefabricated building according to claim 7, characterized in that, The support unit includes a first support unit and a second support unit arranged at an angle, and the insertion notch is located at the junction of the first support unit and the second support unit; The steps of extending the condensation section into the indoor side of the support unit through the insertion notch and installing the evaporation section on the outdoor side of the support unit specifically include: Extend the condensation section into the indoor side of the second support unit through the insertion notch, and install the evaporation section on the outdoor side surface of the first support unit.

9. The installation method of the prefabricated building according to claim 8, characterized in that, Before the step of extending the condensation section into the indoor side of the second support unit through the insertion notch and installing the evaporation section on the outdoor side surface of the first support unit, it further includes: Provide a phase change material unit; Install the phase change material unit on the indoor side of the second support unit.

10. A maintenance method for an assembled building, characterized in that, The prefabricated building is the prefabricated building as described in claim 6; The maintenance method includes: Remove the faulty gravity heat pipe through the avoidance notch; Reinstall the repaired gravity heat pipe or a brand-new gravity heat pipe to the outdoor side of the support unit through the avoidance notch.

11. The maintenance method of the prefabricated building according to claim 10, characterized in that, The prefabricated building wall further includes an indoor side decorative board and a phase change material unit arranged on the indoor side of the support unit. The indoor side decorative board is arranged on the support unit and blocks the indoor sides of the support unit, the condensation section of the gravity heat pipe, and the phase change material unit; The maintenance method further includes: Remove at least part of the indoor side decorative board to expose the condensation section and the phase change material unit; Remove the gravity heat pipe through the avoidance notch; Inspect or replace the phase change material unit.

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