Prefabricated concrete radiation cooling ventilation externally-hung wallboard

Abstract

The invention provides a prefabricated concrete radiation cooling ventilation external wall panel. The prefabricated concrete radiation cooling ventilation external wall panel comprises a prefabricated concrete radiation cooling ventilation external wall panel outer acanthus, a prefabricated concrete radiation cooling ventilation external wall panel inner acanthus, a grating, outer acanthus stiffening ribs and a cover plate, the prefabricated concrete radiation cooling ventilation external wall panel outer acanthus and the prefabricated concrete radiation cooling ventilation external wall panel inner acanthus are connected through a plurality of outer acanthus stiffening ribs to form a ventilation air duct; a cover plate is arranged at the upper end of the ventilation air duct; a grating is embedded in the upper part of an outer acanthus of the prefabricated concrete radiation cooling ventilation externally-hung wallboard; the sleeve connecting piece is pre-buried in an inner leaf plate of the prefabricated concrete radiation cooling ventilation external wall plate, and the prefabricated concrete radiation cooling ventilation external wall plate is installed on a main body structure and spliced to a parapet wall from the bottom layer of the main body structure. The invention relates to the technical field of fabricated buildings, and can solve the problems that in the prior art, an external wall additional heat preservation layer is prone to cracking, falling off and water seepage, and a double-layer ventilation curtain wall is high in cost and limited in use.

Description

Technical Field

[0001] The invention relates to the technical field of assembled buildings, and in particular to a prefabricated concrete radiation cooling and ventilation exterior wall panel. Background Art

[0002] Traditional precast concrete exterior walls and their insulation structures include the following types:

[0003] 1. Fully prefabricated wall with insulation material: Fully prefabricated wall is a prefabricated wall with full thickness. The insulation layer is constructed on the outside and inside of the wall when the wall is installed.

[0004] 2. Prefabricated sandwich insulation exterior wall formwork: The outer blade is used as the outer formwork on the outside, and the sandwich insulation layer is prefabricated together with the outer blade in the middle, and stainless steel connectors or FRP connectors are reserved to be cast together with the cast-in-place concrete of the inner blade to form a whole.

[0005] 3. Prefabricated sandwich insulation wall: Based on the prefabricated sandwich insulation exterior wall mold, the inner leaf plate is also prefabricated together with the outer leaf plate. The insulation material is in the center of the wall to form a sandwich structure.

[0006] 4. Double-sided composite wall: Double-sided composite wall is a prefabricated building structure system, which consists of two prefabricated concrete slabs (panels) and a cast-in-place concrete layer in the middle. This wall structure combines the high efficiency of prefabricated concrete with the flexibility and structural performance of on-site concrete. It consists of a double-sided prefabricated panel and a cast-in-place layer in the middle. The double-sided prefabricated panel is usually made of reinforced concrete. The two panels are prefabricated in the factory, with a flat surface and reserved steel bars to connect with the cast-in-place concrete layer in the middle. The middle cast-in-place layer is a concrete layer cast on site between the two prefabricated panels, forming the core part of the wall. After the prefabricated panels are transported to the construction site, they are installed to the designated location by hoisting equipment. The connection between the panels is usually achieved by pre-buried connectors or protruding steel bars. After the installation is completed, concrete is poured between the two prefabricated panels to form a complete wall structure.

[0007] 5. Standardized panels: Standardized panels are panels with uniform size, shape and performance produced according to certain national standards, industry standards or enterprise standards. Take autoclaved aerated concrete panels as an example. They are made of siliceous materials and calcium materials as the main raw materials, mixed with gas-generating agents and other regulating materials, and equipped with steel mesh cages or steel mesh sheets treated with rust prevention. They are made of porous lightweight silicate prefabricated panels through processes such as batching, pouring, gasification, static stopping, cutting, and autoclaving. They are referred to as AAC panels. This type of wall panel has the characteristics of light weight, heat preservation, heat insulation, fire prevention, and sound absorption. It is widely used in the interior and exterior wall partitions, thermal insulation layers and other parts of buildings. It is composed of autoclaved aerated concrete exterior wall panels, exterior facings, connection nodes and related supporting materials. It is placed outside the main structure of the building and is a non-load-bearing enclosure system that integrates decoration, heat preservation, fire prevention, sound insulation and waterproofing. It is referred to as AAC exterior wall panel system. After adopting the autoclaved aerated concrete panel system, the interior and exterior decoration still needs to be installed after the autoclaved aerated concrete panel is installed. Because it is a finished panel, a thin surface plastering can be achieved.

[0008] 6. Double-layer ventilated curtain wall: The outer side is generally a glass curtain wall or a metal plate wall, the middle is an air layer, and the inner layer is generally a glass curtain wall, an opaque curtain wall or a masonry wall. This type of wall is more expensive.

[0009] 7. Double-layer masonry ventilation wall: used for the interior or exterior wall of an industrial building, including a first wall, a second wall, a ventilation air layer, a ventilation duct, a blower and an exhaust fan. The ventilation air layer is arranged between the first wall and the second wall. The ventilation duct is arranged in the ventilation air layer. The blower is connected to the ventilation duct to suck the gas from an indoor / outdoor environment into the ventilation duct. The exhaust fan is connected to the terminal of the ventilation duct to discharge the gas sucked into the ventilation duct to the outdoor / indoor environment.

[0010] In hot summer and warm winter areas, the solar radiation is strong in summer, and the outdoor heat is continuously transmitted into the room through the exterior wall. Therefore, the thermal insulation performance of the exterior wall of buildings in hot summer and warm winter areas is an important part of the building thermal design. At present, there are usually three measures to improve the thermal insulation performance of the exterior wall of buildings: ①Additional insulation layer on the exterior wall; ②Painting the exterior wall with thermal insulation paint; ③Double-layer ventilated curtain wall or double-layer masonry ventilated wall.

[0011] 1. An additional insulation layer is installed on the exterior wall. In hot summer and warm winter climate areas with hot, rainy and windy weather as the basic characteristics, the technical defects of additional insulation on the exterior wall are magnified, especially the hidden dangers of cracking, falling off and water seepage of the exterior insulation structure of the exterior wall are significantly greater than in other climate zones.

[0012] 2. The exterior walls are painted with reflective thermal insulation paint. The thermal insulation effect of the reflective thermal insulation paint will be greatly reduced as the wall becomes more dusty.

[0013] 3. Double-layer ventilated curtain walls have high construction and maintenance costs, and their application scope is small. Double-layer masonry ventilated walls cannot be used in high-rise civil buildings due to their large wall thickness and heavy weight, and are also difficult to be used on a large scale in ordinary civil construction projects.

[0014] Therefore, it is necessary to provide a prefabricated concrete radiant cooling and ventilation exterior wall panel that can solve the problems in the prior art that the additional insulation layer of the exterior wall is prone to cracking, falling off and water seepage, and the double-layer ventilation curtain wall is high in cost and has limited use. Summary of the invention

[0015] The purpose of the present invention is to provide a prefabricated concrete radiant cooling and ventilation exterior wall panel, which can solve the problems in the prior art that the additional insulation layer of the exterior wall is prone to cracking, falling off and water seepage, and the double-layer ventilation curtain wall is high in cost and limited in use.

[0016] In order to achieve the above object, the technical solution of the present invention is:

[0017] A precast concrete radiant cooling and ventilation external wall panel, comprising: an outer blade of the precast concrete radiant cooling and ventilation external wall panel, an inner blade of the precast concrete radiant cooling and ventilation external wall panel, a grille, an outer blade stiffening rib and a cover plate; the outer blade of the precast concrete radiant cooling and ventilation external wall panel is connected with the inner blade of the precast concrete radiant cooling and ventilation external wall panel through a plurality of outer blade stiffening ribs to form a precast concrete radiant cooling and ventilation external wall panel, and a ventilation duct is formed in the precast concrete radiant cooling and ventilation external wall panel through a plurality of outer blade stiffening ribs; the lower end of the ventilation duct penetrates An air inlet is formed at the bottom of the precast concrete radiation cooling and ventilation external wall panel, a cover plate is sealed and installed at the upper end of the ventilation duct, the ventilation duct runs through the upper part of the outer blade of the precast concrete radiation cooling and ventilation external wall panel to form an air outlet, and the grille is matched and embedded in the air outlet; the sleeve connector is pre-buried in the inner blade of the precast concrete radiation cooling and ventilation external wall panel, so that the precast concrete radiation cooling and ventilation external wall panel is installed on the main structure through the sleeve connector, and several precast concrete radiation cooling and ventilation external wall panels are vertically spliced ​​from the bottom layer of the main structure to the parapet and can be spliced ​​horizontally.

[0018] The top and bottom of the inner blade of the precast concrete radiant cooling and ventilation external wall panel are respectively formed with a tongue and groove, so that two vertically adjacent precast concrete radiant cooling and ventilation external wall panels are spliced ​​through the tongue and groove; when vertically spliced, a horizontal seam is left between the inner blades of the two precast concrete radiant cooling and ventilation external wall panels, and the inner end and the outer end of the horizontal seam are respectively filled with the first sealing structure and the second sealing structure; a groove is formed in the middle of the tongue and groove, so that after the two inner blades of the precast concrete radiant cooling and ventilation external wall panels are vertically spliced, a water-blocking cavity is formed between the first sealing structure and the second sealing structure;

[0019] One side end of the outer blade of the precast concrete radiant cooling and ventilation external wall panel is formed with an outer blade side tongue and groove, and the other side end of the outer blade of the precast concrete radiant cooling and ventilation external wall panel is formed with an outer blade side groove. The outer blade side tongue and groove can be embedded in the outer blade side groove, so that two laterally adjacent precast concrete radiant cooling and ventilation external wall panels are spliced, and a maze-type vertical drainage cavity is formed between the outer blade side groove and the outer blade side tongue and groove; inner blades are formed on both side end surfaces of the inner blade of the precast concrete radiant cooling and ventilation external wall panel. The grooves on the side of the blades form a maze-like vertical drainage cavity between the inner blades of two adjacent precast concrete radiant cooling and ventilation external wall panels after transverse splicing; a vertical seam is left between the two adjacent precast concrete radiant cooling and ventilation external wall panels, the outer ends of the vertical seams of the outer blades of the precast concrete radiant cooling and ventilation external wall panels are filled with a second sealing structure, the outer ends of the vertical seams of the inner blades of the precast concrete radiant cooling and ventilation external wall panels are filled with a water stop strip, and the inner ends of the vertical seams of the inner blades of the precast concrete radiant cooling and ventilation external wall panels are filled with a first sealing structure.

[0020] The first sealing structure includes a water stop strip and a fireproof plug. The water stop strip is embedded in the horizontal seam and the vertical seam, and a first gap is left between the water stop strip and the inner ends of the horizontal seam and the vertical seam, so that the fireproof plug is filled in the first gap; the second sealing structure includes a waterproof sealant and a polyethylene rod. The polyethylene rod is embedded in the horizontal seam and the vertical seam, and a second gap is left between the polyethylene rod and the outer ends of the horizontal seam and the vertical seam, so that the waterproof sealant is filled in the second gap.

[0021] A first window hole is formed on the inner blade of the precast concrete radiant cooling and ventilation external wall panel, and a second window hole is formed on the outer blade of the precast concrete radiant cooling and ventilation external wall panel. The first window hole is connected with the second window hole to form a window hole structure; the outer window is embedded in the first window hole through a pre-buried window frame or a sub-frame; the bottom surface of the second window hole is lower than the bottom surface of the first window hole, and a grille is embedded in the bottom of the second window hole to form an air outlet; transverse keels are respectively installed on the top of the grille and on the outer wall of the inner blade of the precast concrete radiant cooling and ventilation external wall panel and below the first window hole, and a cover plate is sealed and installed between the two transverse keels through a second sealing structure.

[0022] The outer wall of the outer blade of the prefabricated concrete radiation cooling and ventilation external wall panel is painted with heat insulation paint.

[0023] The precast concrete radiation cooling and ventilation external wall panel has a groove reserved on the main structure in the installation node of the bottom layer of the main structure, so that the tongue and groove at the bottom of the inner blade of the precast concrete radiation cooling and ventilation external wall panel is installed on the groove of the main structure, and a water-blocking cavity is formed between the tongue and groove; the inner blade of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the main structure through a sleeve connector and an angle steel connector, so that the ventilation duct is located on the outside of the main structure.

[0024] In the installation nodes of the precast concrete radiation cooling and ventilation external wall panels between the main structure layers, the inner blades of the precast concrete radiation cooling and ventilation external wall panels of two adjacent layers are vertically spliced ​​through the tongue and groove at the top and bottom; the inner blades of the precast concrete radiation cooling and ventilation external wall panels of the upper layer are fixedly connected to the top surface of the interlayer beam body of the main structure through the sleeve connecting piece via the angle steel connecting piece, and the inner blades of the precast concrete radiation cooling and ventilation external wall panels of the lower layer are fixedly connected to the bottom surface of the interlayer beam body of the main structure through the sleeve connecting piece via the angle steel connecting piece, so that the ventilation duct is located outside the main structure; the cover plate on the ventilation duct of the lower layer is turned up to be connected to the outer wall of the inner blade of the precast concrete radiation cooling and ventilation external wall panels of the upper layer, and is sealed by the second sealing structure.

[0025] The precast concrete radiation cooling and ventilation external wall panel is installed at the installation node of the parapet of the main structure, and the bottom of the inner blade of the precast concrete radiation cooling and ventilation external wall panel is installed on the inner blade of the precast concrete radiation cooling and ventilation external wall panel of the next layer through the tongue and groove. The bottom of the inner blade of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the top beam of the main structure through the sleeve connector via the angle steel connector, and the top of the inner blade of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the parapet through the sleeve connector via the angle steel connector, so that the ventilation duct is located outside the main structure; the cover plate on the top of the precast concrete radiation cooling and ventilation external wall panel extends to be fixedly connected to the facade of the parapet, and a second sealing structure is provided between the cover plate and the parapet; the curtain wall is installed above the cover plate, and the curtain wall is arranged flush with the precast concrete radiation cooling and ventilation external wall panel.

[0026] A transverse keel is installed on the top of the outer wall of the inner blade of the precast concrete radiant cooling and ventilation external wall panel and on the inner wall of the outer blade of the precast concrete radiant cooling and ventilation external wall panel and above the grille, so that the cover plate is fixedly installed on the two transverse keels by bolts and closes the upper end of the ventilation duct; the two transverse keels and the inner blade and grille of the precast concrete radiant cooling and ventilation external wall panel are sealed respectively by a second sealing structure.

[0027] The top of the inner blade of the precast concrete radiant cooling and ventilation external wall panel is pre-embedded with a pre-embedded bolt sleeve for lifting, and the inner wall of the inner blade of the precast concrete radiant cooling and ventilation external wall panel is pre-embedded with a bolt sleeve for lifting and diagonal bracing, so that the inner wall of the inner blade of the precast concrete radiant cooling and ventilation external wall panel is connected to the main structure through the bolt sleeve for lifting and diagonal bracing.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention can be directly installed on the main structure through the sleeve connector and the angle steel connector. The installation is simple and convenient. It can be widely used in hot summer and warm winter areas, and can be applied to ordinary industrial and civil construction projects. It has wide applicability and can achieve the goal of sustainable passive cooling through ventilation ducts.

[0030] 2. The present invention can realize quick and accurate horizontal and vertical splicing through the tongue and groove, the tongue and groove of the outer blade side and the groove of the outer blade side. The precast concrete radiant cooling and ventilation external wall panels and their accessories can be factory-produced and standardizedly installed on the construction site. Modular unit design can be adopted according to the engineering design, taking into account the individualization of the engineering project and the standardization requirements of the building industrialization, implementing the principle of "few specifications and more combinations", with a high degree of standardization and modularization, good durability of the wall panels, not easy to crack and fall off, and low maintenance cost.

[0031] 3. The outer blades of the precast concrete radiant cooling and ventilation external wall panels of the present invention can adopt decorative panels according to the requirements of exterior wall decoration, and the inner blades of the precast concrete radiant cooling and ventilation external wall panels can adopt decorative concrete panels according to the requirements of interior wall decoration. They are formed in one piece using the reverse punching technology to achieve the integration of exterior wall prefabrication and decoration, avoiding on-site wet plastering operations.

[0032] 4. A ventilation duct is formed between the outer blades of the precast concrete radiant cooling and ventilation external wall panel and the inner blades of the precast concrete radiant cooling and ventilation external wall panel of the present invention, and the heat insulation effect of the external wall is achieved by using cyclic continuous ventilation, and the water vapor that penetrates the outer blades of the precast concrete radiant cooling and ventilation external wall panel can be effectively discharged to prevent the water vapor from penetrating the inner blades of the precast concrete radiant cooling and ventilation external wall panel and entering the room. The ventilation duct can be segmented according to one floor or multiple floors, the inner wall is smooth, and the ventilation efficiency is high. At the same time, structural waterproofing and material waterproofing are used to form multiple waterproofing in the horizontal seams and vertical seams of the precast concrete radiant cooling and ventilation external wall panel, which effectively prevents outdoor rainwater from entering the room, thereby ensuring that the external wall has a good waterproofing effect.

[0033] 5. The present invention can open various openings on precast concrete radiation cooling and ventilation external wall panels, forming a closed shape around them, and pre-embed window frames or sub-frames in the window openings to avoid post-installation of sub-frames or window frames on site, thereby facilitating direct on-site installation of external windows and improving the waterproof and anti-seepage performance around the external wall window openings.

[0034] 6. The prefabricated concrete radiation cooling and ventilation external wall panels of the present invention use the power generated by heat pressure and wind pressure to promote the air circulation inside the ventilation duct to achieve the heat insulation function. The heat insulation effect is further improved by combining with heat insulation coatings. The maintenance is simple and the operating cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0036] Figure 1 It is a stereoscopic view from the inside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (without the window hole structure);

[0037] Figure 2 It is a stereoscopic view from the outside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (without window hole structure and without grille installed);

[0038] Figure 3 It is a stereoscopic view from the outside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (without window hole structure and with grille installed);

[0039] Figure 4 It is a stereoscopic view from the inside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (with a window hole structure);

[0040] Figure 5 It is a stereoscopic view from the outside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (with a window hole structure, without grilles and exterior windows installed);

[0041] Figure 6 It is a stereoscopic view from the outside of the precast concrete radiation cooling and ventilation exterior wall panel of the present invention (with a window hole structure, grilles and exterior windows installed);

[0042] Figure 7 It is a schematic diagram of the installation nodes of the prefabricated concrete radiation cooling and ventilation external wall panels of the present invention on the bottom layer of the main structure;

[0043] Figure 8 It is a schematic diagram of the installation nodes of the prefabricated concrete radiation cooling and ventilation external wall panels of the present invention between the main structure layers;

[0044] Fig. 9 It is a schematic diagram of the installation nodes of the prefabricated concrete radiation cooling and ventilation external wall panels of the present invention on the parapet of the main structure;

[0045] Fig.10 It is a structural schematic diagram of the precast concrete radiation cooling and ventilation external wall panel of the present invention at the window hole structure;

[0046] Fig.11 It is a transverse cross-sectional view of the prefabricated concrete radiation cooling and ventilation exterior wall panel of the present invention.

[0047] In the figure, 1-precast concrete radiation cooling ventilation external wall panel, 2-sleeve connector, 3-parapet, 4-cover plate, 5-angle steel connector, 6-embedded parts, 7-main structure, 8-waterproof sealant, 9-polyethylene rod, 10-water stop strip, 11-fireproof plugging, 12-side groove of inner blade, 13-tongue and groove, 14-ceiling, 15-building floor finish, 16-cross keel, 17-external blade of precast concrete radiation cooling ventilation external wall panel , 18-inner blade of precast concrete radiant cooling ventilation external wall panel, 19-ventilation duct, 20-grating, 21-external window, 22-thermal insulation coating, 23-maze type vertical drainage cavity, 24-side tongue and groove of outer blade, 25-side groove of outer blade, 26-embedded bolt sleeve for lifting, 27-bolt sleeve for lifting and diagonal bracing, 28-stiffening rib of outer blade, 29-window frame or sub-frame, 30-curtain wall, 31-water-blocking cavity, 32-air inlet. DETAILED DESCRIPTION

[0048] The following is a further detailed description of a prefabricated concrete radiant cooling and ventilation external wall panel proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0049] Please see attached Figure 1 To Attachment Figure 3 A precast concrete radiation cooling ventilation external wall panel comprises an outer blade 17 of the precast concrete radiation cooling ventilation external wall panel, an inner blade 18 of the precast concrete radiation cooling ventilation external wall panel, a grille 20, an outer blade stiffening rib 28 and a cover plate 4; the outer blade 17 of the precast concrete radiation cooling ventilation external wall panel is connected with the inner blade 18 of the precast concrete radiation cooling ventilation external wall panel through a plurality of outer blade stiffening ribs 28 to form a precast concrete radiation cooling ventilation external wall panel 1, and a ventilation duct 19 is formed in the precast concrete radiation cooling ventilation external wall panel 1 through a plurality of outer blade stiffening ribs 28; the lower end of the ventilation duct 19 passes through the precast concrete radiation cooling ventilation external wall panel An air inlet 32 ​​is formed at the bottom of the concrete radiant cooling and ventilation external wall panel 1, and a cover plate 4 is sealed and installed at the upper end of the ventilation duct 19. The ventilation duct 19 passes through the upper part of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel to form an air outlet, and the grille 20 is matched and embedded in the air outlet; the sleeve connector 2 is pre-buried in the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, so that the precast concrete radiant cooling and ventilation external wall panel 1 is installed on the main structure 7 through the sleeve connector 2 and the angle steel connector 5, and several precast concrete radiant cooling and ventilation external wall panels 1 are vertically spliced ​​from the bottom layer of the main structure 7 to the parapet 3 and can be spliced ​​horizontally.

[0050] The outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel is separated from the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel by the outer blade stiffening rib 28, thereby forming a relatively closed space, namely the ventilation duct 19, which can play the role of ventilation and heat insulation. Preferably, according to the actual needs of the project, the height of the precast concrete radiant cooling and ventilation external wall panel 1 can be the height of one floor or the height of multiple floors; the ventilation duct 19 can also be divided into sections according to one floor or multiple floors to meet the ventilation and heat insulation requirements. Its working principle is as follows:

[0051] The outer blades 17 of the precast concrete radiation cooling and ventilation external wall panels are heated by solar radiation as a heat receiving body and then transfer heat to the ventilation duct 19 side, so that the air in the ventilation duct 19 is heated to a temperature higher than the outdoor air temperature. Under the action of heat pressure, the hot air in the ventilation duct 19 is discharged from the highest air outlet of the ventilation duct 19 through the grille 20, and takes away the heat transferred by the outer blades 17 of the precast concrete radiation cooling and ventilation external wall panels, and at the same time, fresh air is sucked in from the air inlet 32. The fresh air entering the ventilation duct 19 continues to heat up, and then is discharged from the air outlet through the grille 20 and takes away the heat, and the circulation is repeated in sequence. The ventilation duct 19 continuously takes away the heat, thereby blocking the transfer of heat from the outer blades 17 of the precast concrete radiation cooling and ventilation external wall panels to the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels and the indoor space, thereby making the exterior wall have good thermal insulation performance.

[0052] The cover plate 4 and the grille 20 can be constructed after the prefabricated concrete radiation cooling and ventilation external wall panel 1 is installed; the cover plate 4 can be used to close the segmented upper end of the ventilation duct 19 so that the air can only be discharged from the air outlet through the grille 20.

[0053] Preferably, the outer blades 17 of the precast concrete radiant cooling and ventilation external wall panels can be made of materials such as stone and facing bricks according to the requirements of exterior wall decoration, and the inner blades 18 of the precast concrete radiant cooling and ventilation external wall panels can be made of materials such as concrete decorative panels according to the requirements of interior wall decoration, thereby realizing the integration of wall prefabrication and decoration, meeting personalized needs while avoiding on-site wet plastering operations.

[0054] Please see attached Figure 1 To Attachment Fig. 9 The top and bottom of the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel are respectively formed with a tongue and groove 13, so that the two vertically adjacent precast concrete radiation cooling and ventilation external wall panels 1 are spliced ​​through the tongue and groove 13; when vertically spliced, a horizontal seam is left between the two precast concrete radiation cooling and ventilation external wall panels The inner blades 18 are filled with the first sealing structure and the second sealing structure respectively at the inner end and the outer end of the horizontal seam; a groove is formed in the middle of the tongue and groove 13, so that after the two precast concrete radiation cooling and ventilation external wall panels The inner blade 18 are vertically spliced, a water-blocking cavity 31 is formed between the first sealing structure and the second sealing structure.

[0055] The tongue and groove 13 facilitates the rapid splicing of two vertically adjacent precast concrete radiation cooling and ventilation exterior wall panels 1, so that the precast concrete radiation cooling and ventilation exterior wall panels 1 can be produced in a standardized manner, and is conducive to improving the efficiency and quality of exterior wall assembly construction.

[0056] When vertically spliced, a horizontal seam is reserved between the inner blades 18 of the two prefabricated concrete radiation cooling and ventilation external wall panels to form a water-blocking cavity 31. The concave water-blocking cavity 31 can prevent external water from penetrating into the room. At the same time, by embedding the first sealing structure and the second sealing structure at the inner and outer ends of the horizontal seam, a double seal is formed through structural waterproofing and material waterproofing, further ensuring the waterproof and fireproof performance of the exterior wall.

[0057] Please see attached Fig.11 The outer blade side groove 24 is formed at one side end of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel, and the outer blade side groove 25 is formed at the other side end of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel. The outer blade side groove 24 can be embedded in the outer blade side groove 25, so that two laterally adjacent precast concrete radiant cooling and ventilation external wall panels 1 are spliced, and a maze-type vertical drainage cavity 23 is formed between the outer blade side groove 25 and the outer blade side groove 24; both side end surfaces of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel are A groove 12 is formed on the side of the inner blade, so that a maze-like vertical drainage cavity 23 is formed between the inner blades 18 of two adjacent precast concrete radiant cooling and ventilation external wall panels after transverse splicing; a vertical seam is left between the two adjacent precast concrete radiant cooling and ventilation external wall panels 1, the outer end of the vertical seam of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel is filled with a second sealing structure, the outer end of the vertical seam of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel is filled with a water stop strip 10, and the inner end of the vertical seam of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel is filled with a first sealing structure.

[0058] Preferably, the outer blade side edge groove 24 and the outer blade side edge groove 25 are in a long strip structure, and the width of the outer blade side groove 25 is greater than the width of the outer blade side edge groove 24, so that the outer blade side edge groove 24 can be easily embedded into the outer blade side groove 25, so as to realize the rapid horizontal splicing of the precast concrete radiation cooling and ventilation external wall panels 1, and improve the standardized production and assembly construction of the precast concrete radiation cooling and ventilation external wall panels 1. At the same time, a gap is formed between the outer blade side groove 25 and the outer blade side edge groove 24, that is, a maze-type vertical drainage cavity 23, which serves as a waterproof structure of the outer wall, and is convenient for draining water that penetrates into the outer wall, thereby ensuring the waterproof and anti-seepage performance of the entire outer wall.

[0059] Preferably, the labyrinth-type vertical drainage cavity 23 can be communicated with the water-blocking cavity 31 in the horizontal seam, so as to facilitate the drainage of the accumulated water in the water-blocking cavity 31. The waterproofing of the labyrinth-type vertical drainage cavity 23 and the waterproofing of the materials of the first sealing structure and the second sealing structure ensure the waterproof and anti-seepage performance of the exterior wall.

[0060] The outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel is designed into a special shape through the tongue and groove 13, the outer blade side groove 25 and the outer blade side tongue and groove 24, which reduces the contact between the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, that is, the outer wall of the main structure, and rainwater, so as to reduce the amount of rainwater acting on the joints of the outer wall. Specifically, at the horizontal seam position, the bottom edge of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel forms a rain eyebrow on the horizontal seam through the tongue and groove 13, shielding the direct effect of rainwater on the joint; at the vertical seam position, the side of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel is combined through the outer blade side groove 25 and the outer blade side tongue and groove 24 to form a maze-like vertical drainage cavity 23 with a maze section, preventing rainwater from directly acting on the joints of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel.

[0061] Please see attached Figure 7 , Attachment Figure 8 and attached Fig.11 The first sealing structure includes a water stop strip 10 and a fireproof plug 11. The water stop strip 10 is embedded in the horizontal seam and the vertical seam, and a first gap is left between the water stop strip 10 and the inner ends of the horizontal seam and the vertical seam, so that the fireproof plug 11 is filled in the first gap; the second sealing structure includes a waterproof sealant 8 and a polyethylene rod 9. The polyethylene rod 9 is embedded in the horizontal seam and the vertical seam, and a second gap is left between the polyethylene rod 9 and the outer ends of the horizontal seam and the vertical seam, so that the waterproof sealant 8 is filled in the second gap.

[0062] Preferably, the water stop strip 10 can be a water stop rubber strip, and the water stop strip 10 and the fireproof plug 11 can form a seal and fireproof at the inner ends of the horizontal seam and the vertical seam, ensuring the waterproof, anti-seepage and fireproof performance of the exterior wall. The polyethylene rod 9 can be a round polyethylene rod, and the waterproof sealant 8 and the polyethylene rod 9 can form a seal at the outer ends of the horizontal seam and the vertical seam, further ensuring the waterproof and anti-seepage performance of the exterior wall. The water blocking cavity 31 and the maze-type vertical drainage cavity 23 are closed by the first sealing structure and the second sealing structure, ensuring the drainage performance while preventing the penetration of external water into the room.

[0063] The waterproof and drainage design of the horizontal seam of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel: the tongue and groove 13 at the top of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel on this floor and the tongue and groove 13 at the bottom of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel on the previous floor are combined to form a high-low seam (the indoor side is higher than the outdoor side), and form a water-blocking cavity 31 to achieve the purpose of waterproofing; a water stop strip 10 is set on the inner and outer side sealing edges of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, and a water stop strip 10 is set on the outer side of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel. A polyethylene rod 9 is used as a backing material, and a waterproof sealant 8 is applied on the outside to further enhance the waterproof effect; a metal cover plate 4 that separates the ventilation duct 19 extends upward along the surface of the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel and covers the horizontal seam, and is nailed to the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel of the upper floor; a waterproof sealant 8 is applied at the end of the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel to improve the waterproof performance of the horizontal seam; through the above measures, multiple waterproof lines combining material waterproofing and structural waterproofing are formed.

[0064] Vertical seam drainage design of precast concrete radiant cooling and ventilation external wall panel 1: the section formed by the side combination of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel is a maze-like vertical drainage cavity 23, a polyethylene rod 9 is used as a backing material on the outer side of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel, and a waterproof sealant 8 is applied on the outer side; the side of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel is combined to form a maze-like vertical drainage cavity 23 with a polygonal section; a water stop strip 10 is arranged between the maze-like vertical drainage cavity 23 of the outer blade 18 of the precast concrete radiant cooling and ventilation external wall panel and the maze-like vertical drainage cavity 23 of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel, and a water stop strip 10 is arranged on the inner side sealing edge of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel; through the above measures, multiple waterproof lines combining material waterproofing and structural waterproofing are formed.

[0065] Please see attached Figure 4 To Attachment Figure 6 A first window hole is formed on the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, and a second window hole is formed on the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel. The first window hole is connected to the second window hole to form a window hole structure; the outer window 21 is embedded in the first window hole through a pre-buried window frame or sub-frame 29.

[0066] For the precast concrete radiant cooling and ventilation external wall panel 1 with window hole reservation requirements, the first window hole and the second window hole can be respectively opened on the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel and the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel according to the size and position of the window hole, so as to form a window hole structure that meets the design requirements. The horizontal and vertical splicing methods of the precast concrete radiant cooling and ventilation external wall panel 1 with the window hole structure are the same as those of the precast concrete radiant cooling and ventilation external wall panel 1 without the window hole structure, and will not be repeated here.

[0067] When the first window opening and the second window opening are provided, they are arranged in the center as far as possible, and a circumferentially closed shape is formed around the first window opening and the second window opening to ensure the structural strength of the prefabricated concrete radiation cooling and ventilation exterior wall panel 1.

[0068] A window frame is embedded in the first window hole of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel to facilitate the subsequent installation of the outer window 21; a sub-frame 29 can also be embedded in the first window hole to facilitate the subsequent installation of the outer window 21 after the window frame is embedded in the sub-frame 29. The window frame or sub-frame 29 can improve the waterproof and anti-seepage performance of the outer window 21.

[0069] Please see attached Fig.10 The bottom surface of the second window hole is lower than the bottom surface of the first window hole, and a grille 20 is embedded in the bottom of the second window hole to form an air outlet; transverse keels 16 are respectively installed on the top of the grille 20 and on the outer wall of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel and below the first window hole, and a cover plate 4 is sealed and installed between the two transverse keels 16 through a second sealing structure.

[0070] Preferably, the polyethylene rod 9 is filled in the gap between the cover plate 4 and the transverse keel 16, and the polyethylene rod 9 and the end of the cover plate 4 are filled and sealed by the waterproof sealant 8. The two sides and the top edge of the window frame or the sub-frame 29 can also be separated from the ventilation duct 19 by the cover plate 4 through the transverse keel 16 and the second sealing structure to ensure the aesthetics of the outer window 21.

[0071] Please see attached Figure 3 , Attachment Figure 6 To Attachment Fig.11 The outer wall of the outer blade 17 of the prefabricated concrete radiation cooling and ventilation external wall panel is painted with a heat insulation coating 22.

[0072] Preferably, the heat-insulating coating 22 can be applied after the prefabricated concrete radiation cooling and ventilation exterior wall panel 1 is installed. The type of the heat-insulating coating 22 can be adaptively selected according to actual construction requirements.

[0073] Please see attached Figure 7The precast concrete radiation cooling and ventilation external wall panel 1 is installed at the installation node of the bottom layer of the main structure 7, and a groove is reserved on the main structure 7, so that the tongue and groove 13 at the bottom of the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is installed on the groove of the main structure 7, and a water-blocking cavity 31 is formed between the tongue and groove 13 and the groove; the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the main structure 7 through the sleeve connector 2 and the angle steel connector 5, so that the ventilation duct 19 is located on the outside of the main structure 7.

[0074] Preferably, embedded parts 6 can be installed on the bottom beam of the main structure 7, so that one end of the angle steel connector 5 is fixed to the bottom beam of the main structure 7 through the embedded parts 6, and the other end of the angle steel connector 5 is fixedly connected to the sleeve connector 2, thereby ensuring that the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel is firmly installed at the installation node of the bottom layer of the main structure 7. The inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel located at the bottom layer and the bottom beam of the main structure 7 are provided with a water-blocking cavity 31 between the tongue and groove 13 and the groove to ensure waterproof performance.

[0075] Preferably, after the floor slab is cast, the floor slab finished surface 15 can cover the connection node between the sleeve connector 2 and the angle steel connector 5 to ensure the aesthetics of the connection node.

[0076] Please see attached Figure 8 In the installation node between the layers of the main structure 7, the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels of the two adjacent layers are vertically spliced ​​through the tongue and groove 13 at the top and bottom; the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels of the upper layer are fixedly connected to the top surface of the interlayer beam body of the main structure 7 through the sleeve connector 2 via the angle steel connector 5, and the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels of the lower layer are fixedly connected to the bottom surface of the interlayer beam body of the main structure 7 through the sleeve connector 2 via the angle steel connector 5, so that the ventilation duct 19 is located on the outside of the main structure 7; the cover plate 4 on the ventilation duct 19 of the lower layer is turned up to be connected to the outer wall of the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels of the upper layer, and is sealed by the second sealing structure.

[0077] Preferably, embedded parts 6 can be installed on the top surface of the interlayer beam body of the main structure 7, so that one end of the angle steel connector 5 is fixed to the interlayer beam body of the main structure 7 through the embedded parts 6, and the other end of the angle steel connector 5 is fixedly connected to the sleeve connector 2, so as to ensure that the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel of the upper layer is firmly installed at the installation node of the bottom layer of the main structure 7. The sleeve connector 2 can be installed on the bottom surface of the interlayer beam body of the main structure 7, so that the two ends of the angle steel connector 5 are connected to the main structure 7 and the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel of the next layer through the sleeve connector 2. The water-blocking cavity 31 between the tongue and groove 13 between the inner blades 18 of the precast concrete radiation cooling and ventilation external wall panels of two adjacent layers ensures waterproof performance.

[0078] Preferably, after the floor slab is cast, the floor slab finished surface 15 can cover the connection node between the sleeve connector 2 and the angle steel connector 5 to ensure the aesthetics of the connection node.

[0079] The cover plate 4 on the ventilation duct 19 of the next layer is turned up along the inner blade plate 18 of the precast concrete radiation cooling ventilation external wall panel and extends to the outer wall of the inner blade plate 18 of the precast concrete radiation cooling ventilation external wall panel of the previous layer, and can be fixed to the outer wall of the inner blade plate 18 of the precast concrete radiation cooling ventilation external wall panel of the previous layer by bolts. Polyethylene rods 9 are filled between the cover plate 4 and the outer wall of the inner blade plate 18 of the precast concrete radiation cooling ventilation external wall panel of the previous layer, and the gap between the upper end of the cover plate 4, the upper part of the polyethylene rod 9 and the outer wall of the inner blade plate 18 of the precast concrete radiation cooling ventilation external wall panel of the previous layer is sealed by waterproof sealant 8. The cover plate 4 also covers the outer side of the horizontal seam between the layers to ensure the waterproof performance of the exterior wall.

[0080] Please see attached Fig. 9 The precast concrete radiation cooling and ventilation external wall panel 1 is in the installation node of the parapet 3 of the main structure 7, and the bottom of the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is installed on the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel of the next layer through the tongue and groove 13. The bottom of the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the top beam of the main structure 7 through the sleeve connector 2 via the angle steel connector 5, and the top of the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the parapet 3 through the sleeve connector 2 via the angle steel connector 5, so that the ventilation duct 19 is located outside the main structure 7; the cover plate 4 at the top of the precast concrete radiation cooling and ventilation external wall panel 1 extends to be fixedly connected to the facade of the parapet 3, and a second sealing structure is provided between the cover plate 4 and the parapet 3; the curtain wall 30 is installed above the cover plate 4, and the curtain wall 30 is arranged flush with the precast concrete radiation cooling and ventilation external wall panel 1.

[0081] Preferably, at the connection node between the parapet 3 and the cover plate 4, the cover plate 4 is tilted and flipped up to the outer facade of the parapet 3, and the gap between the cover plate 4 and the parapet 3 is filled with polyethylene rods 9, and a third gap is left between the polyethylene rods 9 and the upper end of the cover plate 4, so that the waterproof sealant 8 is filled in the third gap.

[0082] Preferably, a sleeve connector 2 can be embedded in the parapet 3, so that the two sections of the angle steel connector 5 are fixedly connected between the parapet 3 and the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel through the sleeve connector 2. After installation, the connection node can be hidden by the ceiling 14, which plays a decorative and aesthetic role.

[0083] The curtain wall 30 can be a metal plate curtain wall or other form of curtain wall, which can be adaptively selected according to actual decoration needs. The facade of the curtain wall 30 is flush with the facade of the precast concrete radiant cooling and ventilation external wall panel 1, forming an integral exterior wall structure, thereby ensuring the aesthetics and integrity of the exterior wall.

[0084] Please see attached Figure 7 and attached Figure 8 A transverse keel 16 is installed on the top of the outer wall of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel and the inner wall of the outer blade 17 of the precast concrete radiant cooling and ventilation external wall panel and above the grille 20, so that the cover plate 4 is fixedly installed on the two transverse keels 16 by bolts, and the upper end of the ventilation duct 19 is closed; the two transverse keels 16 and the inner blade 18 and the grille 20 of the precast concrete radiant cooling and ventilation external wall panel are sealed respectively by a second sealing structure.

[0085] Preferably, the transverse keel 16 can be made of square steel pipes to support and install the cover plate 4. Polyethylene rods 9 and waterproof sealant 8 are sequentially filled between the transverse keel 16 and the outer wall of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel and the top surface of the grille 20 to ensure the waterproof performance of the connection node.

[0086] Please see attached Figure 1 and attached Figure 4 The top of the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel is pre-embedded with a pre-embedded bolt sleeve 26 for lifting, and the inner wall of the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel is pre-embedded with a bolt sleeve 27 for lifting and diagonal bracing, so that the inner wall of the inner blade plate 18 of the precast concrete radiation cooling and ventilation external wall panel is connected to the main structure 7 through the bolt sleeve 27 for lifting and diagonal bracing.

[0087] Preferably, two pre-embedded bolt sleeves 26 for lifting can be symmetrically embedded at the top of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, which is convenient for lifting and use during factory prefabrication and on-site construction. Two bolt sleeves 27 for lifting and diagonal bracing can be symmetrically embedded at the upper and lower parts of the inner wall of the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel, which is convenient for lifting and use, and also convenient for fixing the inner blade 18 of the precast concrete radiant cooling and ventilation external wall panel to the main structure 7 through the diagonal brace when installing the precast concrete radiant cooling and ventilation external wall panel 1, thereby improving the installation reliability of the precast concrete radiant cooling and ventilation external wall panel 1.

[0088] Please see attached Figure 1 To Attachment Fig.11 The precast concrete radiation cooling and ventilation external wall panel 1 of the present invention adopts a double-layer structure formed by the outer blade 17 of the precast concrete radiation cooling and ventilation external wall panel and the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel, and a ventilation duct 19 is formed in the precast concrete radiation cooling and ventilation external wall panel 1 through the outer blade stiffening rib. After the inner blade 18 of the precast concrete radiation cooling and ventilation external wall panel is fixedly installed on the main structure 7, the precast concrete radiation cooling and ventilation external wall panel 1 is used as the external wall enclosure structure of the main structure, and the ventilation duct 19 is used to achieve the effect of ventilation and heat insulation. At the same time, a heat insulation coating 22 can be applied on the outer surface of the outer blade 17 of the precast concrete radiation cooling and ventilation external wall panel to further improve the heat insulation performance of the external wall enclosure structure.

[0089] The labyrinth-type vertical drainage cavity 23 and the water-blocking cavity 31 serve as the waterproof structure of the exterior wall retaining structure, and the first sealing structure and the second sealing structure serve as the waterproof structure of the exterior wall retaining structure, providing the exterior wall retaining structure with dual waterproof functions of structural waterproofing and material waterproofing, thereby ensuring the waterproof and anti-seepage performance of the exterior wall retaining structure.

[0090] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A prefabricated concrete radiant cooling and ventilation external wall panel, characterized in that: include: Precast concrete radiation cooling ventilation external wall panel outer blade (17), precast concrete radiation cooling ventilation external wall panel inner blade (18), grille (20), outer blade stiffening rib (28) and cover plate (4); the precast concrete radiation cooling ventilation external wall panel outer blade (17) and the precast concrete radiation cooling ventilation external wall panel inner blade (18) are connected through a plurality of outer blade stiffening ribs (28) to form a precast concrete radiation cooling ventilation external wall panel (1), and a ventilation duct (19) is formed in the precast concrete radiation cooling ventilation external wall panel (1) through a plurality of outer blade stiffening ribs (28); the lower end of the ventilation duct (19) passes through the precast concrete radiation cooling ventilation external wall panel inner blade (18); An air inlet (32) is formed at the bottom of the external wall panel (1), a cover plate (4) is sealed and installed at the upper end of the ventilation duct (19), the ventilation duct (19) penetrates the upper part of the outer blade plate (17) of the precast concrete radiation cooling ventilation external wall panel to form an air outlet, and the grille (20) is matched and embedded in the air outlet; the sleeve connector (2) is pre-buried in the inner blade plate (18) of the precast concrete radiation cooling ventilation external wall panel, so that the precast concrete radiation cooling ventilation external wall panel (1) is installed on the main structure (7) through the sleeve connector (2), and a plurality of precast concrete radiation cooling ventilation external wall panels (1) are vertically spliced ​​from the bottom layer of the main structure (7) to the parapet (3) and can be spliced ​​horizontally.

2. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 1, characterized in that: The top and bottom of the inner blade plate (18) of the precast concrete radiation cooling and ventilation external wall panel are respectively formed with a tongue and groove (13), so that two vertically adjacent precast concrete radiation cooling and ventilation external wall panels (1) are spliced ​​through the tongue and groove (13); when splicing vertically, a horizontal seam is left between the two precast concrete radiation cooling and ventilation external wall panels (18), and the inner end and the outer end of the horizontal seam are respectively filled with a first sealing structure and a second sealing structure; a groove is formed in the middle of the tongue and groove (13), so that after the two precast concrete radiation cooling and ventilation external wall panels (18) are vertically spliced, a water-blocking cavity (31) is formed between the first sealing structure and the second sealing structure; The outer blade side groove (24) is formed at one side end of the outer blade (17) of the precast concrete radiant cooling and ventilation external wall panel, and the outer blade side groove (25) is formed at the other side end of the outer blade (17) of the precast concrete radiant cooling and ventilation external wall panel. The outer blade side groove (24) can be embedded in the outer blade side groove (25), so that two laterally adjacent precast concrete radiant cooling and ventilation external wall panels (1) are spliced, and a maze-type vertical drainage cavity (23) is formed between the outer blade side groove (25) and the outer blade side groove (24); the end surfaces on both sides of the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel The inner blade side grooves (12) are formed on the inner blades, so that a maze-like vertical drainage cavity (23) is formed between the inner blades (18) of two adjacent precast concrete radiant cooling and ventilation external wall panels after transverse splicing; a vertical seam is left between the two adjacent precast concrete radiant cooling and ventilation external wall panels (1), the outer end of the vertical seam of the outer blade (17) of the precast concrete radiant cooling and ventilation external wall panel is filled with a second sealing structure, the outer end of the vertical seam of the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel is filled with a water stop strip (10), and the inner end of the vertical seam of the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel is filled with a first sealing structure.

3. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 2, characterized in that: The first sealing structure comprises a water stop strip (10) and a fireproof plug (11), wherein the water stop strip (10) is embedded in the horizontal seam and the vertical seam, and a first gap is left between the water stop strip (10) and the inner ends of the horizontal seam and the vertical seam, so that the fireproof plug (11) is filled in the first gap; the second sealing structure comprises a waterproof sealant (8) and a polyethylene rod (9), wherein the polyethylene rod (9) is embedded in the horizontal seam and the vertical seam, and a second gap is left between the polyethylene rod (9) and the outer ends of the horizontal seam and the vertical seam, so that the waterproof sealant (8) is filled in the second gap.

4. The precast concrete radiation cooling and ventilation exterior wall panel according to claim 1 or 2, characterized in that: A first window hole is formed on the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel, and a second window hole is formed on the outer blade plate (17) of the precast concrete radiant cooling and ventilation external wall panel, and the first window hole is connected with the second window hole to form a window hole structure; the outer window (21) is embedded in the first window hole through a pre-buried window frame or a sub-frame (29); the bottom surface of the second window hole is lower than the bottom surface of the first window hole, and a grille (20) is embedded in the bottom of the second window hole to form an air outlet; transverse keels (16) are respectively installed on the top of the grille (20) and on the outer wall of the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel and located below the first window hole, and a cover plate (4) is sealed and installed between the two transverse keels (16) through a second sealing structure.

5. The precast concrete radiation cooling and ventilation exterior wall panel according to claim 4, characterized in that: The outer wall of the outer blade (17) of the prefabricated concrete radiation cooling and ventilation external wall panel is painted with a heat-insulating coating (22).

6. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 2, characterized in that: The precast concrete radiation cooling and ventilation external wall panel (1) is provided with a groove reserved on the main structure (7) in an installation node of the bottom layer of the main structure (7), so that the tongue (13) at the bottom of the inner blade (18) of the precast concrete radiation cooling and ventilation external wall panel is installed on the groove of the main structure (7), and a water-blocking cavity (31) is formed between the tongue (13) and the groove; the inner blade (18) of the precast concrete radiation cooling and ventilation external wall panel is fixedly connected to the main structure (7) through a sleeve connector (2) and an angle steel connector (5), so that the ventilation duct (19) is located outside the main structure (7).

7. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 2, characterized in that: In the installation nodes of the precast concrete radiation cooling and ventilation external wall panels (1) between the layers of the main structure (7), the inner blades (18) of the precast concrete radiation cooling and ventilation external wall panels of two adjacent layers are vertically spliced ​​through the tongue and groove (13) at the top and bottom; the inner blades (18) of the precast concrete radiation cooling and ventilation external wall panels of the upper layer are fixedly connected to the top surface of the interlayer beam body of the main structure (7) through the sleeve connector (2) via the angle steel connector (5), and the inner blades (18) of the precast concrete radiation cooling and ventilation external wall panels of the lower layer are fixedly connected to the bottom surface of the interlayer beam body of the main structure (7) through the sleeve connector (2) via the angle steel connector (5), so that the ventilation duct (19) is located outside the main structure (7); the cover plate (4) on the ventilation duct (19) of the lower layer is turned up to connect with the outer wall of the inner blades (18) of the precast concrete radiation cooling and ventilation external wall panels of the upper layer, and is sealed by the second sealing structure.

8. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 2, characterized in that: The precast concrete radiant cooling and ventilation external wall panel (1) is installed at the installation node of the parapet (3) of the main structure (7), the bottom of the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel is installed on the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel of the next layer through the tongue and groove (13), the bottom of the inner blade (18) of the precast concrete radiant cooling and ventilation external wall panel is fixedly connected to the top beam body of the main structure (7) through the sleeve connector (2) and the angle steel connector (5), and the precast concrete radiant cooling and ventilation external wall panel is fixedly connected to the top beam body of the main structure (7) through the sleeve connector (2) and the angle steel connector (5). The top of the inner blade plate (18) of the wall panel is fixedly connected to the parapet (3) through a sleeve connector (2) via an angle steel connector (5), so that the ventilation duct (19) is located outside the main structure (7); the cover plate (4) on the top of the precast concrete radiation cooling and ventilation external wall panel (1) extends to be fixedly connected to the outer facade of the parapet (3), and a second sealing structure is provided between the cover plate (4) and the parapet (3); the curtain wall (30) is installed above the cover plate (4), and the curtain wall (30) is arranged flush with the precast concrete radiation cooling and ventilation external wall panel (1).

9. The precast concrete radiant cooling and ventilation exterior wall panel according to claim 1 or 2, characterized in that: A transverse keel (16) is installed on the top of the outer wall of the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel and on the inner wall of the outer blade plate (17) of the precast concrete radiant cooling and ventilation external wall panel and above the grille (20), so that the cover plate (4) is fixedly installed on the two transverse keels (16) by bolts and closes the upper end of the ventilation duct (19); the two transverse keels (16) and the inner blade plate (18) and the grille (20) of the precast concrete radiant cooling and ventilation external wall panel are sealed respectively by a second sealing structure.

10. The precast concrete radiation cooling and ventilation exterior wall panel according to claim 1 or 2, characterized in that: The top of the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel is pre-buried with a pre-buried bolt sleeve (26) for lifting, and the inner wall of the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel is pre-buried with a bolt sleeve (27) for lifting and diagonal bracing, so that the inner wall of the inner blade plate (18) of the precast concrete radiant cooling and ventilation external wall panel is connected to the main structure (7) through the bolt sleeve (27) for lifting and diagonal bracing.

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