CN111794453A - A green energy-saving assembled roof - Google Patents

Abstract

The invention relates to an assembled roof, in particular to a green energy-saving assembled roof. The green energy-saving assembled roof comprises a roof bearing structure, a roof assembling plate, a rainwater collecting unit and a top cover ventilating unit; a roof assembling plate is laid on the upper surface of the roof bearing structure; the roof ventilation unit covers the roof bearing structure; the top cover ventilation unit comprises an outer top cover and an inner top cover, and the inner top cover is arranged below the outer top cover; the outer surface of the outer top cover is movably provided with a solar power generation panel; the rainwater collection unit is laid around the outer edge of the top cover ventilation unit. The roof is assembled, so that the construction time is short, the operation is convenient and fast, and the practicability is high; the roof structure is simple, and built on stilts ventilation is effectual than the thermal-insulated roof of entity material cooling, guarantees thermal-insulated daytime, easily dispels the heat night again. The problem of low utilization of natural energy is solved, and the aims of environmental protection and energy conservation are fulfilled.

Description

A green energy-saving assembled roof

technical field

The invention relates to an assembled roof, in particular to a green energy-saving assembled roof.

Background technique

The roof generally includes cast-in-place concrete floor, cement mortar leveling layer, thermal insulation layer, waterproof layer, cement mortar protective layer, drainage system, parapet and lightning protection measures, etc. In special projects, there is also the construction of the tile surface (hanging tile strips). ). The assembled roof system is based on the original load-bearing structure of the building, using the steel skeleton to arrange the roof structure in a dense rib grid. If thermal insulation is required, functional plates can be pasted on the upper and lower sides of the grid-shaped steel skeleton and filled with thermal insulation materials. Green building roofing system technology is one of the important components of green building technology. Green building roofing system has the functions of energy saving, environmental protection, ecology, recyclability, prolonging the service life of the roof and coexisting harmoniously with nature. Most of the current traditional roof structure forms are Flat roofs and sloping roofs use traditional structures without rational use of natural energy, and only consider the basic function of sheltering from wind and rain. The building structure is relatively simple, resulting in poor indoor air circulation, and the indoor air cannot be updated when it is inconvenient and windows are opened; use The thermal insulation effect of the middle roof is poor, the leakage is serious, and the service life is reduced; in areas with strong sunshine or a lot of rain, the light and rainfall are not fully utilized. Therefore, under the circumstance of less conventional energy and large building energy consumption, and under the combined action of environmental protection and other factors, it is imminent to vigorously develop green and energy-saving buildings in my country.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a green energy-saving assembled roof that can realize overhead ventilation, is easy to install, and can effectively cool down and save energy.

The present invention realizes above-mentioned purpose through following technical scheme:

A green energy-saving assembled roof, comprising a roof load-bearing structure, a roof assembly board, a rainwater collection unit and a roof ventilation unit; it is characterized in that: a roof assembly board is laid on the upper surface of the roof load-bearing structure; the roof cover The ventilation unit is covered above the roof bearing structure; the roof ventilation unit includes an outer roof and an inner roof, and the inner roof is placed below the outer roof; the outer surface of the outer roof is movably installed with A solar power generation panel; the rainwater collection unit is laid around the outer edge of the roof ventilation unit.

The inner top cover is a cuboid frame, an inner cover plate is arranged above the inner top cover, ventilation holes are arranged on the outer surface of the inner cover plate, and two sets of profile reinforcement ribs are arranged between the two long sides of the inner top cover; The inner top cover is provided with louvers on the outside around the periphery; the louvers are of an outwardly convex structure.

The ventilation hole of the inner cover plate is fixed with a centrifugal fan, the centrifugal fan is equipped with a temperature controller, the centrifugal fan is provided with a switch that can be turned on and off regularly, and two ventilation states, natural and forced, are set. The bottom ends of the profile reinforcing rib are fixedly connected to the inner frame of the inner top cover, and the upper part of the profile reinforcing rib is an inverted V-shaped structure and is fixedly connected with the inner cover plate.

The outer frame of the outer top cover is provided with an outer cover plate, a solar panel is movably mounted on the outer cover plate, a trapezoidal cover plate is arranged above the seam of the top of the outer cover plate, and air outlets are arranged on both long sides of the trapezoidal cover plate , A ventilation circuit is formed between the air outlet and the inner cover, and the air outlet is aligned with the solar panel.

Two beams are welded inside the outer cover plate parallel to the length direction, the outer cover plate and the inner cover plate are fixedly connected by the two beams, and both the outer cover plate and the inner cover plate are provided with maintenance openings.

The rainwater collection unit is an assembled structure, including a flow trough, a downspout, a discarder, a water storage tank, a discarded flow pipe, and a rainwater well; The outlets at both ends are connected with the downpipe, the downpipe is equipped with a discarder, the discarder is connected with the water storage tank, and the end of the downpipe is connected to the rainwater well; the water storage tank is provided with an outlet for clean water.

The flow groove includes a straight-through groove, a turning flow groove and a filter box. One end of the straight-through groove, the turning flow groove and the filter box is made with a positioning boss, and the other end is made with a positioning concave used in conjunction with the positioning boss. The straight-through trough is combined with the turning trough and the filter box to form a trough, and the trough is combined along the surrounding edges of the roof load-bearing structure and installed under the outer circumference of the outer top cover.

One end of the filter box is a filter chamber, and the other end is a sedimentation chamber. The bottom connected with the filter chamber and the sedimentation chamber is provided with a communicating bottom channel, the upper end of the left side wall of the filter chamber is provided with a liquid inlet, and the upper end of the right side wall of the sedimentation chamber is provided with a liquid inlet. A liquid outlet is provided, and a boss with an inclination angle of 45 degrees is made in the middle of the filter chamber. The inner wall of the box below the boss maintains an acute angle A with the vertical direction. The upper surface of the filter screen is placed on the boss. It is flush with the bottom surface of the liquid inlet, and the bottom of the filter chamber is made with an arc-shaped slope with a high left end and a low right end, and the height of the slope surface gradually decreases from the left end of the filter chamber to the direction of the channel; To make one end of the positioning groove; after the flow groove is assembled, the two ends are respectively connected to the downspout.

The beneficial effects of the present invention are:

The design of the double-layer roof can effectively heat insulation and ventilation. The double-layer design has strong mechanical properties and can improve the service life of the roof; the structure is stable, the rigidity after combination, the strength and the protection level are high; the ventilation design around the roof Facilitate the ventilation and heat dissipation of the roof; the modular design saves cost and time;

A fresh air system can be installed in the enclosed space formed by the double-layer top cover, thereby realizing a continuous and controllable ventilation path. On the premise, 24 hours a day, the indoor dirty air is continuously discharged in time, and outdoor fresh air is introduced at the same time, and the air volume is effectively controlled. The ventilation of the fresh air system is not only to remove the polluted air. Besides the ventilation function, the fresh air system also has the functions of deodorization, dust removal, dehumidification and room temperature adjustment. The main unit of the fresh air system is installed in the top cover ventilation unit, which can effectively Reduce the impact of noise on the room, so that users can enjoy high-quality fresh air more comfortably;

The green energy-saving assembled roof has a novel structure and is assembled with a positioning assembly flow trough. The flow trough is assembled from a straight trough, a turning flow trough and a filter box. It can be produced according to the customer's site requirements, and can be installed directly during assembly. With the positioning groove, the positioning is accurate, the assembly is fast, the structure is stable, the time is saved, the work efficiency is improved, and there will be no water leakage at the wrong seam, and the laminar flow of rainwater is stable, which avoids the existing laundering trough. Insufficient assembly and water leakage;

The rainwater collection unit collects and filters the rainwater. The rainwater is primary filtered in the filter box. The coarse debris such as leaves and branches are blocked by the filter screen. Since the roof is open, it is easy to be polluted. The rainwater washes the roof and other rain-receiving surfaces. Dust, soluble and insoluble debris, the filter box has a filter chamber, which can precipitate and filter impurities in the early stage of rainfall, and the rainwater collected after filtering can be used as water for washing, watering flowers and plants, landscape water, road cleaning, etc. , Scientific collection and reasonable storage of rainwater and energy-saving use are an effective way to save energy and reduce emissions, and give full play to the use value of rainwater;

Solar power panels convert light energy into electrical energy. Solar power generation is safe and reliable, does not produce any waste, has no pollution, noise and other public hazards, and has no adverse impact on the environment. It is an ideal environmentally friendly green energy. At the same time, the construction period is short, convenient and flexible. And according to the increase or decrease of the load, the amount of solar energy can be added or decreased to avoid waste.

Description of this drawing:

Fig. 1 is the side sectional schematic diagram of the present invention;

Fig. 2 is the structure schematic diagram of the trapezoidal cover plate of the present invention;

Fig. 3 is the front structure schematic diagram of the roof panel of the present invention;

Fig. 4 is the roof load-bearing structure schematic diagram of the present invention;

Fig. 5 is the three-dimensional structure schematic diagram of the present invention;

Fig. 6 is the top-view structure schematic diagram of the outer top cover of the present invention;

Fig. 7 is the top view structure schematic diagram of the inner top cover of the present invention;

FIG. 8 is a schematic three-dimensional structure diagram of the assembled outer top cover and the inner top cover of the present invention;

Fig. 9 is the structural representation of the filter box of the present invention;

10 is a schematic diagram of the structure of the DC tank of the present invention;

FIG. 11 is a schematic diagram of the structure of the turning launder of the present invention;

Fig. 12 is the structural representation after the assembly of part of the troughs of the present invention;

FIG. 13 is a schematic diagram of the use structure of the rainwater collection unit of the present invention.

In the picture:, roof assembly board, 2, roof load-bearing structure, 3, outer top cover, 3-1, outer cover plate, 3-2, outer frame, 3-3, trapezoidal cover plate, 3-4, beam, 4 , Mainframe of fresh air system, 4-1, air inlet pipe, 4-2, exhaust pipe, 5, inner top cover, 5-1, inner cover plate, 5-2, inner frame, 5-3, profile reinforcement, 5-4, shutters, 6, filter box, 6-1, filter chamber, 6-2, sedimentation chamber, 6-3, liquid inlet, 6-4, liquid outlet, 6-5, bottom channel, 7, Flow tank, 7-1, DC tank, 7-2, turning flow tank, 8, rainwater collection unit, 9, roof ventilation unit, 10, solar power panel, 11, centrifugal fan, 12, positioning boss, 13, Positioning groove, 14, filter screen, 15, downspout, 16, spoiler, 17, discard pipe, 18, water storage tank, 19, domestic water pipe, 20, rainwater well, 21, water supply well.

Detailed ways:

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The green energy-saving assembled roof, as shown in FIG. 1, includes a roof load-bearing structure 2, a roof assembly panel 1, a rainwater collection unit 8, a roof ventilation unit 9 and a solar power generation panel 10; the roof assembly panel 1 is assembled on the On the roof load-bearing structure 2; the roof assembly plate 1 is a prefabricated part, as shown in Figure 3, the roof assembly plate 1 is arranged in two layers, and staggered installation surfaces are made between the edges of the upper and lower layers for easy splicing. As shown in Figure 4, before the roof assembly plate 1 is installed, the roof load-bearing structure 2 is mostly cast-in-place reinforced concrete floor slabs. Before laying the insulation layer, it should be ensured that the base of the working face is flat, and 1:5 is used in some potholes and uneven places. The dry cement mortar is thin and leveled, the roof load-bearing structure 2 is laid with two layers of 1.5-thick cross-laminated waterproofing membranes, and the roof assembly plate 1 is sealed with structural glue.

The roof load-bearing structure 2 and the roof assembly board 1 are provided with installation holes for the fresh air system host 4; The fresh air system host 4 is installed above the roof assembly board 1 under the inner top cover 5. After the fresh air system host 4 is connected to the pipeline, it undergoes power connection debugging and acceptance.

The roof load-bearing structure 2 after the installation of the roof panel 1 is completed is provided with a roof ventilation unit 9. As shown in FIG. 8, the roof ventilation unit 9 includes an outer roof 3 and an inner roof 5. The top cover 5 is placed inside the outer top cover 3; as shown in FIG. 7 , the inner top cover 5 is a rectangular parallelepiped frame, and an inner cover plate 5-1 is arranged above the inner top cover 5, and the inner cover plate 5-1 The outer surface of the inner top cover 5 is provided with ventilation holes, and two sets of profile reinforcing ribs 5-3 are provided between the two long sides of the inner top cover 5; 4 is an external convex structure; a centrifugal fan 11 is fixed in the ventilation hole of the inner cover plate 5-1, a temperature controller is installed on the centrifugal fan 11, and the centrifugal fan 11 is provided with a switch that can be turned on and off regularly. , the centrifugal fan 11 can be turned on and off regularly, and is provided with two ventilation states: natural and forced; the bottom ends of the profile reinforcement ribs 5-3 are fixedly connected to the inner frame of the inner top cover 5, and the profile reinforcement ribs 5- 3. The upper part is an inverted V-shaped structure and is fixedly connected with the inner cover plate 5-1.

As shown in FIG. 6 , the outer frame of the outer top cover 3 is provided with an outer cover plate 3-1, a plurality of sets of solar panel mounting holes are movably installed on the outer cover plate 3-1, and the top of the outer cover plate 3-1 is installed. A trapezoidal cover plate 3-3 is arranged above the joint. Two beams are welded inside the outer cover plate 3-1 parallel to the length direction. The outer cover plate 3-1 and the inner cover plate 5-1 are fixedly connected by the two beams. The cover plate 3-1 and the inner cover plate 5-1 are both provided with maintenance openings.

There are air outlets on both sides of the trapezoidal cover 3-3, which form a ventilation circuit with the inner cover. The air outlet of 3 can blow off the dust, leaves, snow, etc. on the solar panel 10, reduce occlusion, and keep the surface of the solar panel 10 clean and in normal use.

The solar power generation panel 10 movably connected on the outer top cover includes a solar cell assembly, the solar cell assembly is installed in the solar panel installation hole on the outer cover plate 3-1, the solar cell assembly is connected with the controller, and the controller 1 is connected with the battery The controller is connected in parallel with an inverter, an AC load and a DC load. The solar cell components and batteries are the power supply system, the controller and inverter are the control and protection system, and the load is the system terminal. The main unit 4 of the fresh air system and the centrifugal fan 11 are respectively connected with the solar power generation panel 10 .

The roof load-bearing structure 2 is provided with a rainwater collection unit 8 around, and the rainwater collection unit 8 is an assembled structure, as shown in Fig. 9 to Fig. 13 , including a flow trough 7, a downspout 15, a spoiler 16, and a water storage tank 18. , Abandoned flow pipe 17, rainwater well 20. Described flow slot 7 includes straight-through slot 7-1, turning flow slot 7-2 and filter box 6, and one end of described straight-through slot 7-1, turning flow slot 7-2 and filter box 6 are all made with positioning protrusions. The table 12 has a positioning groove 13 at the other end, and the groove shape of the positioning groove 13 is a U-shaped structure. , the flow groove 7 is assembled along the circumference of the top cover ventilation unit 9 and installed under the outer edge of the outer top cover 3, and the joints of the flow groove 7 and the outer edge of the outer top cover 3 are both processed as inclined planes, which is convenient for rainwater to flow into the flow groove 7. middle. The straight trough 7-1 and the turning trough 7-2 are assembled and then spliced with filter boxes 6 at both ends to form a complete trough 7 . As shown in FIG. 9 , one end of the filter box 6 is a filter chamber 6-1, and the other end is a sedimentation chamber 6-2. The bottom of the filter chamber 6-1 and the sedimentation chamber 6-2 is connected with a box bottom channel that communicates with each other. 6-5, the upper end of the left side wall of the filter chamber 6-1 is provided with a liquid inlet 6-3, the upper end of the right side wall of the sedimentation chamber 6-2 is provided with a liquid outlet 6-4, and the middle of the inner cavity of the filter chamber 6-1 is made with The inclination angle of the filter screen 14 is a 45-degree boss. The inner wall of the box below the boss maintains an acute angle with the vertical direction. After the filter screen 14 is placed on the boss, the upper surface is flush with the bottom surface of the liquid inlet 6-3. The bottom of the filter chamber 6-1 is made with an arc-shaped slope with a high left end and a low right end, and the height of the slope surface gradually decreases from the left end of the filter chamber 6-1 to the channel direction; One end of the positioning groove 13 is made; after the assembly of the flow groove 7 is completed, the two ends are respectively connected to the downspout 15 . As shown in FIG. 13 , the downpipe 15 is equipped with a spoiler 16 , the spoiler 16 communicates with the water storage tank 18 , and the end of the downpipe 15 is connected to the rainwater well 20 ; the water storage tank 18 has an outlet for cleaning water. The rainwater is primary filtered in the filter box 6, and the coarse sundries such as leaves and branches are blocked by the filter screen 14. Since the roof is open, it is easy to be polluted. In addition to insoluble debris, the filter box 6 has a filter chamber 6-1, which can precipitate and filter the impurities in the early stage of rainfall. The rainwater collection site is often not managed by a special person, and many places cannot even provide power, so the rainwater pretreatment facility must be unpowered. maintenance-free system, practice has proved that only the simplest pretreatment facilities are the most practical. Rainwater is collected from the troughs 7 around the roof and filtered through the filter box 6. The rainwater is first intercepted by the filter screen 14 on the filter room 6-1, and then the rainwater enters the sedimentation room 6-2 from the channel at the bottom of the box. The liquid outlet 6-4 is set at a higher position of the box, and some sediments such as sediment can stay in the sedimentation chamber 6-2 during the rainwater accumulation process, and flow out from the liquid outlet 6-4 after sedimentation. The rainwater enters the downspout 15 , and is separated by the discarder 16 , the usable part enters the water storage tank 18 , and the discarded part enters the rainwater well 20 through the discarding pipe 17 . Precipitation and filtration can be cleaned regularly in the filter box 6 impurities.

The green and energy-saving assembled roof can be adapted to different areas and shapes of roofs through assembly. The roof assembly plate 1 is prefabricated in advance, which can effectively shorten the construction time on site, with convenient operation and strong practicability. Before installation, it is necessary to check whether the steel structure veneer surface is Flatness, whether the arrangement of sandalwood strips is consistent with the drawing; prepare the tools required for installation: cutting machine, hand drill, drill tail wire, etc.; material preparation: choose an assembly board with a flat surface without cracks and damage. The outer top cover 3 and the inner top cover 5 are arranged above the assembled roof panel 1. The design of the double-layer roof can effectively heat insulation and ventilation, and the double-layer design has strong mechanical properties and improves the service life of the roof; structure Stability, high rigidity and strength after combination; high protection level, convenient for roof ventilation and heat dissipation; modular design, saving cost and time.

The commonly used central ducted fresh air system is connected to the fresh air host through pipes. The principle of the system is: install exhaust fans and exhaust ducts and other supporting facilities in the kitchen and bathroom, and install air inlets in the bedroom and living room. When the exhaust fan is running, it exhausts the original indoor air, so that the indoor air generates negative pressure, and the outdoor fresh air enters the room through the air inlet under the action of the indoor and outdoor air pressure difference, so as to achieve the purpose of indoor ventilation. The fresh air system installed in the top cover ventilation unit 9 is a ventilation method that is continuous and can control the ventilation path. Through the centrifugal fan 11 and the airflow control system with good performance, the replacement of fresh air can be completely controlled, and the whole room can be fully controlled without opening windows. 24 hours a day, the indoor dirty air is continuously discharged in time, and outdoor fresh air is introduced at the same time, and the air volume is effectively controlled. The ventilation of the fresh air system is not only to discharge the polluted air. Besides the ventilation function, the fresh air system also has the functions of deodorization, dust removal, dehumidification and room temperature adjustment; Effectively reduce the impact of system noise on the interior, and has double-layer protection of the outer top cover 3 and the inner top cover 5, avoiding the outside wind, sun and rain, allowing users to enjoy high-quality fresh air more comfortably .

The green and energy-saving assembled roof has a novel structure and is assembled with a positioning assembly flow trough 7. The flow trough 7 is assembled by the straight groove 7-1, the turning flow trough 7-2 and the filter box 6, which can be assembled according to the customer's site. It has stronger applicability and can be installed directly during assembly. The positioning boss 12 is matched with the positioning groove 13, which is convenient for positioning, fast assembly, stable structure, stable laminar flow of rainwater, more accurate installation, saving time and improving work. Efficiency, avoids the problem that the existing launder 7 is not assembled properly, there are gaps, and the assembly is not firm; the launder 7 collects and filters rainwater, and the rainwater is primary filtered in the filter box 6, leaves, branches, etc. The coarse debris is blocked by the filter screen. Since the roof is open, it is easy to be polluted. The rainwater washes away the dust on the rain-receiving surface such as the roof, as well as the soluble and insoluble debris. The filter box 6 has a filter room 6-1. With sedimentation chamber 6-2, impurities can be precipitated and filtered in the early stage of rainfall, and the rainwater collected after filtering can be used as water for flushing, watering flowers and plants, landscape water, road cleaning, etc. The scientific collection and reasonable storage of rainwater and energy-saving use are important An effective way to save energy and reduce emissions is to give full play to the use value of rainwater; the collection and utilization of rainwater can bring us many benefits. We can use the collected rainwater for daily life, such as laundry, car washing, and toilet flushing. Of course, watering and greening, road flushing, fire fighting, etc. are also big users of rainwater utilization. The collection and utilization of rainwater can also reduce the flow of rainwater on urban streets, reduce the pressure of urban drainage, and at the same time effectively reduce the confluence of rainwater and sewage, and reduce the pressure of sewage treatment.

The solar power generation panel 10 on the outer top cover 3 converts the light energy into electrical energy. During the construction operation, first ensure that the connection between the various parts of the system is intact: if the solar cell module and the inverter are well The indicator light is green and flashes; otherwise, it is not connected well, and the staff needs to use a multimeter to check whether there is voltage at the output end of the solar cell module, check whether the connection line is open, etc.; The indicator light at the bottom of the front panel is green; otherwise, it is not connected well, and the staff needs to use a multimeter to check whether there is voltage at the output of the inverter, check whether the AC line is open, and so on. After the above inspections are complete, turn on the DC input and bypass input air switches of the inverter. At this time, the inverter starts, and the LCD display and indicator lights of the inverter are turned on, and then the AC output switch is turned on, and the system can be run. Solar power generation is safe and reliable, does not generate any waste, has no pollution, noise and other public hazards, and has no adverse impact on the environment. It is an ideal environmentally friendly green energy. At the same time, the construction period is short, convenient and flexible, and it can be added or reduced according to the increase or decrease of the load. Reduce the amount of solar energy to avoid waste. At the same time, because of the heat-absorbing properties of the solar panel itself, it ensures that the roof itself is not exposed to the sun, so the house also maintains a relatively cool constant temperature, which achieves a real power saving effect.

The green energy-saving assembled roof combines rainwater collection and solar power generation through the roof and roof ventilation unit 9, and the roof area is used in the largest range. It is suitable for sloping roofs or flat roofs. Gathering provides the most basic spatial places. The collection and utilization of rainwater does not only solve the problem of water, it can also alleviate problems such as the water supply pressure of the increasingly huge tap water and road surface water. It also has a certain mitigation effect on problems such as soil erosion and river water pollution. At the same time, making full use of my country's abundant solar energy resources, vigorously developing solar buildings has become the current need to reduce building energy consumption.

Overhead ventilated roofs are widely used in hot summer and cold winter areas in my country, especially in hot and rainy summer. This type of roof structure shows its superiority. The principle of a ventilated roof is to set a ventilation interlayer on the roof. On the one hand, the outer layer of the ventilation interlayer is used to block the sunlight. For example, a closed or ventilated air interlayer sunshade is set to intercept the solar radiant heat directly irradiating the roof, so that the roof can be blocked. It becomes two heat transfer to avoid the direct effect of solar radiant heat on the enclosure structure; on the other hand, the effect of wind pressure and thermal pressure, especially natural ventilation, absorbs the upper and lower surfaces of the sunshade in contact with the air. The solar radiation heat is transferred to the air and carried away with the wind. The higher the wind speed, the more heat it takes away, and the better the heat insulation effect is. .

There are many advantages of ventilated interlayer roofs, such as material saving, light weight, less material layers, rainproof, leakproof, economical, and easy to maintain. The most important thing is that the structure is simple, and the cooling effect is better than that of the solid material insulation roof. Even some tiled roofs are built with overhead tiles for heat insulation to ensure heat insulation during the day and easy heat dissipation at night.

It has been proved by relevant experiments that although the thermal resistance of the ventilated roof is the same as that of the solid roof, their thermal performance is very different. Taking an energy-saving experimental building in Wuhan as an example, under natural ventilation conditions The average temperature of the inner surface of the solid masonry roof is 35.5 ℃, and the maximum temperature is 38.9 ℃, while the ventilated roof is 33.5 ℃, and the maximum temperature is 36.8 ℃. The ventilated roof also has the characteristics of fast heat dissipation. The actual measurement shows that the maximum value of the temperature wave on the inner surface of the ventilated roof is 3-4 hours later than that of the solid masonry roof.

The above descriptions are only preferred embodiments of the present invention, and the above-mentioned examples do not limit the substance of the present invention in any form. Those of ordinary skill in the art will, after reading this specification, understand the above according to the technical essence of the present invention. Any simple modification or deformation made by the specific embodiment, as well as an equivalent embodiment that may be changed or modified by using the technical content disclosed above, still belong to the scope of the technical solution of the present invention without departing from the essence of the present invention and range.

Claims (7)

1. A green energy-saving assembled roof comprises a roof bearing structure (2), a roof assembling plate (1), a rainwater collecting unit (8) and a top cover ventilation unit (9); the method is characterized in that:

a roof assembling plate (1) is laid on the upper surface of the roof bearing structure (2);

the roof ventilation unit (9) covers the roof bearing structure (2);

the top cover ventilation unit (9) comprises an outer top cover (3) and an inner top cover (5), and the inner top cover (5) is arranged below the outer top cover (3);

the outer surface of the outer top cover (3) is movably provided with a solar power generation panel (10);

the rainwater collection unit (8) is paved on the periphery of the outer edge of the top cover ventilation unit (9).

2. The green energy-saving assembled roof as claimed in claim 1, wherein: the inner top cover (5) is a cuboid frame, an inner cover plate (5-1) is arranged above the inner top cover (5), the outer surface of the inner cover plate (5-1) is provided with a vent hole, and two groups of section bar reinforcing ribs (5-3) are arranged between two long sides of the inner top cover (5);

shutters (5-4) are arranged on the outer sides of the periphery of the inner top cover (5); the louver (5-4) is of a convex structure.

3. The green energy-saving assembled roof as claimed in claim 2, wherein: a centrifugal fan (11) is fixedly arranged in a ventilation hole of the inner cover plate (5-1), a temperature controller is arranged on the centrifugal fan (11), and the centrifugal fan (11) is provided with a switch capable of being turned on and off at fixed time;

two ends of the bottom of the section bar reinforcing rib (5-3) are fixedly connected to the inner frame of the inner top cover (5), and the upper part of the section bar reinforcing rib (5-3) is of an inverted V-shaped structure and is fixedly connected with the inner cover plate (5-1).

4. The green energy-saving assembled roof as claimed in claim 1, wherein: an outer cover plate (3-1) is arranged on the outer frame of the outer top cover (3), and a solar panel (10) is movably arranged on the outer cover plate (3-1); two beams are welded in the outer cover plate (3-1) in parallel to the length direction; the outer cover plate (3-1) is fixedly connected with the inner cover plate (5-1) through two cross beams, and the outer cover plate (3-1) and the inner cover plate (5-1) are both provided with maintenance ports.

5. The green energy-saving assembled roof as claimed in claim 4, wherein: a trapezoidal cover plate (3-3) is arranged above a seam at the top of the outer cover plate (3-1), air outlets are arranged on long sides of the trapezoidal cover plate (3-3), a ventilation loop is formed between the trapezoidal cover plate and the inner cover plate, and the air outlets point to the solar power generation panel (10).

6. The green energy-saving assembled roof as claimed in claim 1, wherein: the rainwater collecting unit (8) is of an assembled structure and comprises a flow groove (7) and a downpipe (15); the launder (7) is spliced and arranged below the outer edge of the outer top cover (3) along the periphery of the roof bearing structure (2), and the outlet of the launder (7) is connected with the downpipe (15).

7. The green energy-saving assembled roof as claimed in claim 6, wherein: the launder (7) include through-flow groove (7-1), turn launder (7-2) and rose box (6) with through-flow groove (7-1) amalgamation, the one end of through-flow groove (7-1), turn launder (7-2) and rose box (6) all make and have location boss (12), the other end preparation has positioning groove (13) with location boss (12) cooperation use, through-flow groove (7-1) enclose launder (7) with turn launder (7-2) and rose box (6) amalgamation respectively.

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