Unequal-slope sawtooth roof structure and photovoltaic greenhouse thereof

Abstract

The embodiment of the utility model relates to the technical field of agricultural facilities, and discloses an unequal-slope sawtooth roof structure and a photovoltaic greenhouse thereof. The unequal-slope sawtooth roof structure comprises a plurality of supporting components arranged at intervals. The plurality of photovoltaic modules are obliquely arranged relative to the ground; the arch-shaped roof trusses are arranged between every two adjacent supporting components in a crossing mode, each arch-shaped roof truss is provided with a protruding ventilation cap, and a ventilation opening is formed in the tail end of each ventilation cap; the plurality of drainage devices are arranged on the supporting component and have preset ground clearances; the transparent plastic film covers the circular-arch-shaped roof truss; in the height direction, the ventilation opening is located below the first tail end of the photovoltaic module and is shielded by the photovoltaic module. The ventilation cap structure is reasonably arranged, the heat dissipation and cooling requirements in the greenhouse can be effectively met, an optimized drainage path is provided on the basis of the unequal-slope sawtooth roof formed on the roof of the ventilation cap, and the dry and comfortable state in the greenhouse can be maintained.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural facilities, and in particular to an unequal slope sawtooth roof structure and a photovoltaic greenhouse thereof. Background Art

[0002] A photovoltaic greenhouse is a structural design that combines photovoltaic power generation with traditional agricultural greenhouses. By adding connection and mounting structures, the roof of the agricultural greenhouse is set below multiple groups of photovoltaic modules.

[0003] It has been widely promoted and used because it combines agriculture with new energy, has the advantages of improving land use efficiency and achieving economic and environmental benefits.

[0004] However, existing photovoltaic greenhouses still have many defects and deficiencies in use. For example, when used in tropical areas with high temperatures and abundant rainfall, photovoltaic greenhouses have a greater need for ventilation and cooling in the summer and to maintain dryness inside the greenhouse.

[0005] Existing photovoltaic greenhouses fail to adequately address both of these requirements. If the roof is covered with a film to prevent rain, poor ventilation will lead to high temperatures inside the greenhouse. If the roof is open, it will be no different from open-air cultivation, failing to provide a rainproof and protected cultivation environment.

[0006] Therefore, there is an urgent need to provide a suitable photovoltaic greenhouse structure to take into account the needs of drainage and ventilation and cooling. Utility Model Content

[0007] The unequal slope sawtooth roof structure and photovoltaic greenhouse provided in this application can overcome at least some of the defects of existing photovoltaic greenhouses.

[0008] In the first aspect, the present application provides an unequal slope sawtooth roof structure for a photovoltaic greenhouse. The invention relates to a roof system comprising: a plurality of spaced-apart support members; a plurality of photovoltaic modules fixed to the ground at their bottoms, one photovoltaic module fixed to the top of one of the support members and inclined relative to the ground; wherein the inclined photovoltaic modules have first and second ends spaced apart from each other; the first end having a greater height above the ground than the second end; a plurality of arched roof trusses; one of the arched roof trusses spanning between two adjacent support members in a first direction; wherein one of the arched roof trusses is provided with a protruding vent cap to form a roof unit with an uneven slope and a sawtooth shape; the vent cap being the highest point of the roof unit; a plurality of drainage devices; one of the drainage devices forming a gutter extending in a second direction; the drainage device being provided on the support member at a predetermined height above the ground; wherein the first and second directions are perpendicular to each other on the ground; and a transparent plastic film; wherein the transparent plastic film covers the arched roof trusses; wherein the ends of the arched roof trusses extend to the corresponding gutter, and the ends of the vent caps form vents; and in the height direction, the vents are located below the first ends of the photovoltaic modules and are shielded by the photovoltaic modules.

[0009] In some embodiments, the unequal slope sawtooth shape is formed by a combination of a first arc and a second arc: wherein the two arc ends of the first arc extend to two adjacent supporting members respectively; one of the arc ends of the second arc forms the highest point, and the other arc end of the second arc is located at the midpoint of the first arc.

[0010] In some embodiments, in a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction, the vent is perpendicular to the ground.

[0011] In some embodiments, the round arch roof truss includes: an arch rod forming the first arc; a horizontal beam arranged relative to the ground; a web connecting the arch rod and the horizontal beam; and a ventilator cap forming the second arc.

[0012] In some embodiments, the vents are covered with an insect screen.

[0013] In some embodiments, the supporting member includes: a foundation pile fixed on the ground; a photovoltaic bracket fixedly installed on the top of the foundation pile; and a connecting component connecting the photovoltaic bracket and the photovoltaic component.

[0014] In some embodiments, the photovoltaic support includes: a support body extending from a top end of the foundation pile; and an oblique support rod connected between the foundation pile and the support body.

[0015] In some embodiments, the drainage device is fixedly mounted on the foundation piles; wherein, the top of the drainage device is open to receive rainwater flowing out from the end of the arched roof truss.

[0016] In some embodiments, downpipes are provided at two ends of the drainage device that are away from each other in the second direction; wherein the downpipes are connected to the gutter so that rainwater in the gutter is guided to the ground.

[0017] In a second aspect, the present application provides a photovoltaic greenhouse comprising: the unequal-slope sawtooth roof structure described above; and a drainage ditch disposed on the ground and surrounding the unequal-slope sawtooth roof structure; wherein rainwater flowing in the gutter formed by the drainage device of the unequal-slope sawtooth roof structure is directed into the drainage ditch for discharge.

[0018] At least one advantageous aspect of the photovoltaic greenhouse provided by the embodiments of this application is that, through the rational arrangement of the vent cap structure, vents are formed on the roof, effectively achieving heat dissipation and cooling requirements within the greenhouse. Furthermore, the unevenly sloped zigzag roofing formed by the vent caps provides an optimized drainage path. This, in conjunction with the tilted photovoltaic modules, effectively drains rainwater while maintaining a dry environment within the greenhouse, preventing humidity increases. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 This is a side view of a photovoltaic greenhouse provided in an embodiment of the present application;

[0021] Figure 2 Schematic diagram of the connection relationship between the round arch roof truss and two adjacent supporting members provided in an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of a connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The present application is described in detail below with reference to specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope of the present application and its applications.

[0024] It should be noted that, unless otherwise expressly specified or limited, the terms "center," "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "inner," "outer," and the like used in this specification to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. Terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can mean fixed connection, detachable connection, or integral connection; they can be mechanical connection; they can be directly connected or indirectly connected through an intermediate medium. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the number of the technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more; and "and / or" includes any and all combinations of one or more of the relevant listed items. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Figure 1 A side view of a photovoltaic greenhouse provided in an embodiment of the present application. The photovoltaic greenhouse has a roof structure known as an "unequal slope sawtooth roof structure," which can provide sufficient cooling and heat dissipation capabilities while ensuring dryness inside the greenhouse.

[0026] like Figure 1 As shown, the photovoltaic greenhouse includes: a plurality of spaced support members 100 , a plurality of photovoltaic modules 200 , a plurality of arched roof trusses 300 , a plurality of drainage devices 400 and a transparent plastic film 500 .

[0027] Among them, multiple support members 100 are fixed to the ground in an interval arrangement, serving as the basic frame part of the entire photovoltaic greenhouse, for transferring loads such as weight to the ground to maintain the stability and safety of the entire greenhouse.

[0028] Specifically, multiple support members 100 can be arranged along multiple parallel straight lines. The support members 100 on each straight line can be called a row of support members. Multiple rows of support members are arranged at intervals to form a basic framework of a photovoltaic greenhouse with a certain floor area on the ground.

[0029] In this application, for simplicity of description, a first direction X is used to represent the arrangement direction of adjacent rows of support members, and a second direction (not shown in the figures) is used to represent the arrangement direction of support members in the same row.

[0030] In other words, the first direction and the second direction are two directions perpendicular to each other on the ground. Two adjacent rows of support members are spaced apart along the first direction, and the support members in the same row are spaced apart along the second direction.

[0031] The photovoltaic module 200 is a device fixedly mounted on the top of the support member 100 to realize the conversion of light energy into electrical energy. In this embodiment, a photovoltaic module 200 can be mounted on the top of each support member 100, thereby forming a corresponding photovoltaic array on the top surface of the photovoltaic greenhouse.

[0032] Specifically, to improve the light energy conversion efficiency, the plate-shaped photovoltaic assembly 200 is tilted relative to the ground. The specific tilt angle can be set by technicians according to actual needs, such as the latitude of the region.

[0033] For simplicity, in this application, the two ends of a tilted photovoltaic module, which are located farther apart from each other, are referred to as the "first end" and the "second end," respectively. The end with the highest elevation above the ground is referred to as the first end, while the end closer to the ground is referred to as the second end. "Ground elevation" refers to the vertical distance from the ground to the specific structural location.

[0034] The arched roof trusses 300 are arranged between two adjacent supporting members 100 in the first direction, forming a roof frame foundation between the two supporting members 100. In this application, for simplicity of description, the roof structure formed by each row of arched roof trusses 300 is referred to as a "roof unit".

[0035] For example, Figure 1 The figure shows a configuration of four rows of support members 100 and three rows of arched roof trusses 300. However, those skilled in the art will appreciate that, based on the inventive concept of this application, more or fewer support members 100 and arched frames 300 can be provided as needed to provide photovoltaic greenhouses of varying sizes.

[0036] In this application, in order to take into account the heat dissipation and ventilation requirements and the drainage requirements of the greenhouse roof, each arched roof truss 300 is provided with a protruding ventilation cap 310. The ventilation cap 310, as the highest point of the roof unit, can form an uneven slope sawtooth shape.

[0037] Specifically, such as Figure 3 As shown, the unequal slope sawtooth shape of each roof unit can be formed by combining a first arc S1 and a second arc S2.

[0038] The two ends of the first arc S1 extend to two adjacent supporting members, forming the lowest point of the entire unevenly sloped sawtooth shape. This can be formed by the main structure of the arched roof truss 300. The second arc S2 is formed by the aforementioned vent cap 310. One of its ends forms the highest point of the unevenly sloped sawtooth shape, while the other end is located at the midpoint of the first arc, thereby forming a guide path for rainwater flow on a single roof unit.

[0039] Please continue reading Figure 3 In a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction z, the vent is perpendicular to the ground.

[0040] The drainage device 400 is a structure used to form a drainage gutter. The gutter has a slope in the second direction, which can be 2% to 3%. It can be fixed to the support member 100 by any suitable means, forming a gutter extending along the second direction. The ends of the arched roof trusses 300 extend to the corresponding gutter, so that rainwater sliding down the ends can be collected by the gutter and directed to the end drain pipe for discharge.

[0041] For details, please refer to Figure 1 The drainage device 400 mounted on the support member 100 has a suitable height above the ground. The gutter formed by it can be located outside the interior space R of the greenhouse formed by the arched roof truss 300 and the support member 100. This prevents rainwater from entering the interior space of the greenhouse, keeping the air inside the greenhouse dry.

[0042] In some embodiments, as Figure 2 As shown, the drainage device 400 can be designed to be open at the top. The end of the arched roof truss extends to the position of the top opening of the drainage device 400, so that the gutter receives and collects rainwater directed out of the end of the arched roof truss.

[0043] Preferably, to facilitate drainage of the drainage device 400, which has a certain height above the ground, corresponding downpipes can be provided at the two ends of the gutter, which are spaced apart from each other in the second direction. The downpipes, connected to the gutter, can be used to direct rainwater from the gutter to the ground for drainage. Accordingly, the photovoltaic greenhouse can also be equipped with additional ground-level drainage ditches at positions corresponding to the downpipes of the drainage device. Thus, rainwater flowing within the gutter formed by the drainage device can be directed through the downpipes to the drainage ditch for drainage.

[0044] A drainage ditch can be installed outside the greenhouse interior space R, surrounding the greenhouse. Rainwater flowing from the gutter can be directed to the ditch through the downspout and avoid entering the greenhouse interior space R, thereby keeping the air inside the greenhouse dry. The transparent plastic film 500 is made of a light-transmitting and water-impermeable material and has a specific thickness. It can be covered on the arched roof frame to form a light-transmitting and water-impermeable greenhouse roof, providing a rainproof interior environment for the greenhouse.

[0045] The vents can also be covered with insect-proof nets to provide some protection for the crops inside the greenhouse. Correspondingly, insect-proof nets can also be laid around the photovoltaic greenhouse to enclose a relatively independent crop protection area.

[0046] Please continue reading Figure 2 In the height direction z, by appropriately setting the position of the ventilation cap 310, the vent is located below the first end of the photovoltaic component 200 and is shielded by the photovoltaic component 200, preventing rainwater from directly entering the greenhouse through the vent.

[0047] In actual use, based on the specific location of the above-mentioned vents, such as Figure 1 As shown by the black arrow, rainwater falling on the photovoltaic module 200 will slide from the second end of the photovoltaic module to the adjacent roof unit under the action of gravity, and then, under the guidance of the inclined roof unit, flow into the gutter formed by the drainage device 400 through one of the ends of the roof unit at the lowest point.

[0048] As described above, the top of the vent cap 310 is the highest point of the entire roof unit. Rainwater falling directly on the roof unit will also flow to the corresponding end under the action of gravity, and then enter the gutter formed by the drainage device without exceeding the highest point.

[0049] In addition, under the shielding effect of the first end of the photovoltaic component 200 and the adjacent parts, rainwater does not enter directly through the vents, but falls on the photovoltaic component 200 and flows to another adjacent roof unit under the guidance of the inclined photovoltaic component.

[0050] Preferably, based on the larger coverage area provided by the photovoltaic component 200, the area covered by the transparent plastic film 500 covering each roof unit and blocked by the first end of the photovoltaic component 200 and its adjacent part (the supporting structure not exceeding the center point) can also be set as a movable part 510.

[0051] The "movable portion" refers to the ability of the transparent plastic film to switch between two states: unfolded and rolled up. Specifically, those skilled in the art can choose to use any suitable type of film-rolling device to drive the transparent plastic film, making it movable, to meet the needs of different weather conditions.

[0052] During actual use, in spring or winter when the temperature is low and the greenhouse needs to be kept warm, the film rolling device can be controlled to drive the movable transparent plastic film part 510 to be flattened and laid out, so that the entire arched roof truss is completely covered, forming a relatively sealed greenhouse environment and providing better insulation effect.

[0053] In summer and autumn when the temperature is high and the greenhouse needs heat dissipation, the film rolling device can be controlled to drive the movable transparent plastic film part 510 to roll up and recycle and fix it at the vent, so that the greenhouse has sufficient heat dissipation air exchange windows. Moreover, the heat dissipation air exchange windows are located at the top, which is consistent with the characteristics of hot air rising, thereby effectively improving the heat dissipation effect inside the greenhouse.

[0054] Specifically, the movable transparent plastic film portion 510 is laid in the area shielded by the photovoltaic modules. Thus, by utilizing the shielding effect of the photovoltaic modules, rainwater will not directly drip onto the heat dissipation and air exchange window formed by the rolled-up transparent plastic film portion 510, thus preventing rain leakage and ensuring dry air in the greenhouse.

[0055] In some embodiments, please refer to Figure 2 The round arch roof truss 300 includes a ventilating cap 310 , an arch rod 330 , a cross beam 340 and a web member 350 .

[0056] The arch rod 330 forms the aforementioned first arc S1, and the crossbeam is disposed horizontally relative to the ground. The web members 350 may be provided in pairs, connecting the arch rod 330 and the crossbeam 340. The ventilating cap 310 forms a second arc S2 and is fixedly mounted at a suitable position on the arch rod 330.

[0057] For details, please refer to Figure 2 The supporting structure 100 includes: a foundation pile 110, a photovoltaic bracket 120 and a connecting assembly 130.

[0058] The foundation piles 110 are fixed on the ground to bear and transfer loads to the ground. They can be made of concrete or steel structural members.

[0059] The photovoltaic bracket 120 is fixedly mounted on the top of the foundation pile to form a mounting frame for the photovoltaic assembly 200, so that the photovoltaic assembly 200 can be fixed at the designed angle and position. The specific mounting frame structure can be selected according to the actual needs. For example, Figure 2 , a photovoltaic bracket 120 is shown which is composed of a bracket body 121 and an oblique support rod 122 .

[0060] The support body 121 extends from the top of the foundation pile, providing a location for installing and fixing the photovoltaic module 200. The oblique support rod 122 is connected between the foundation pile 110 and the support body 121, so that the support body 121 has a designed tilt angle.

[0061] Therefore, the bracket body 121 can be easily tilted at an appropriate angle by controlling and adjusting the oblique support rods 122 , thereby making the photovoltaic assembly 200 fixed on its surface have a suitable tilt angle.

[0062] The connection assembly 130 is a connection member used to achieve a fixed connection between the photovoltaic assembly and the photovoltaic support. It can be selected to use any suitable type of connection member according to the actual needs, and is not specifically limited here.

[0063] In some embodiments, as Figure 3 As shown, the drainage device 400 and the arch rod 330 can form a stable connection node through matching connectors and be fixed at an appropriate position of the foundation pile 110 to form a complete roof structure.

[0064] The connector 600 includes a clamp 610 and an inclined support structure 620. The inclined support structure 620 forms a first mounting position F1 on its side, which is tilted relative to the height direction. One end of the arch rod 330 can be locked and fixed in the first mounting position F1 by a similar structure such as an arch rod pressing piece 630. The inclined support structure 620 also has a second mounting position F2 that is approximately horizontal to the ground. The drainage device 400 can be locked and fixed in the second mounting position F2.

[0065] The inclined support structures 620 can be arranged in pairs, providing support and fixed mounting locations for the arch rods 330 and the drainage device 400 on either side. The clamp 610 is rigidly connected to the pair of inclined support structures 620 and is located at the bottom of the support structures 620. Thus, the clamp 610 locks and secures the inclined support structures 620 to the foundation piles 100.

[0066] It should be noted that, in the embodiment of the present application, the above-mentioned connecting member is divided into a clamp 610 and a support structure 620 based on the basic functional structure. However, it is understood by those skilled in the art that, according to the actual needs, a combination of more or fewer structural components can be selected to realize the above-mentioned clamp 610 and support structure 620. For example, Figure 3 As shown, the support structure 620 can be implemented by multiple components, which are locked and fixed by bolts 640.

[0067] Furthermore, the transparent plastic film 500 laid and covered on the dome-shaped roof can also be locked and fixed on the inclined support structure 620 by means of bolts 640 , so that its ends are stably and reliably fixed.

[0068] In summary, the photovoltaic greenhouse provided in the embodiment of the present application can be well used in the summer when rain and heat coexist. It can not only meet the ventilation and cooling needs of planting in the greenhouse, but also optimize the drainage path to prevent rainwater from flowing through the planting space inside the greenhouse, so that the greenhouse can maintain a relatively dry state.

[0069] The above content is a further detailed description of the present application in conjunction with specific / preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application.

Claims

1. A photovoltaic greenhouse unequal slope sawtooth roof structure, characterized in that: include: A plurality of support members are arranged at intervals; the bottoms of the support members are fixed to the ground; A plurality of photovoltaic modules, wherein one photovoltaic module is fixedly mounted on a top end of a supporting member and is tilted relative to the ground; The tilted photovoltaic assembly has a first end and a second end that are spaced apart from each other; the first end is higher from the ground than the second end; A plurality of round arch roof trusses; one of the round arch roof trusses is arranged between two adjacent support members in the first direction; Wherein, one of the arched roof trusses is provided with a protruding vent cap to form a roof unit with an uneven slope and a sawtooth shape; the vent cap is the highest point of the roof unit; A plurality of drainage devices; one of the drainage devices forms a gutter extending along the second direction; the drainage device is arranged on the support member and has a preset height from the ground; Wherein, the first direction and the second direction are two directions perpendicular to each other on the ground; Transparent plastic film; the transparent plastic film covers the arched roof truss; The end of the arched roof truss extends to the corresponding gutter, and the end of the vent cap forms a vent; in the height direction, the vent is located below the first end of the photovoltaic component and is blocked by the photovoltaic component.

2. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The unequal slope sawtooth shape is formed by combining a first arc and a second arc: The two arc ends of the first arc respectively extend to two adjacent supporting members; one arc end of the second arc forms the highest point, and the other arc end of the second arc is located at the midpoint of the first arc.

3. The unequal slope sawtooth roof structure according to claim 2, characterized in that: In a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction, the vent is perpendicular to the ground.

4. The unequal slope sawtooth roof structure according to claim 2, characterized in that: The round arch roof truss comprises: an arch rod forming the first arc; a beam arranged horizontally relative to the ground; a web connecting the arch rod and the cross beam; and The second arc-shaped cowl is formed.

5. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The vents are covered with insect-proof nets.

6. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The support member comprises: foundation piles fixed to the ground; A photovoltaic support fixedly mounted on the top of the foundation pile; and A connecting component connecting the photovoltaic support and the photovoltaic component.

7. The unequal slope sawtooth roof structure according to claim 6, characterized in that: The photovoltaic support comprises: a support body extending from a top end of the foundation pile; and An oblique support rod is connected between the foundation pile and the support body.

8. The unequal slope sawtooth roof structure according to claim 6, characterized in that: The drainage device is fixedly arranged on the foundation pile; wherein, the top of the drainage device is open to receive the rainwater flowing out from the end of the arched roof truss.

9. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The drainage device is provided with downpipes at two ends away from each other in the second direction; Wherein, the downpipe is connected to the gutter so that rainwater in the gutter is guided to the ground.

10. A photovoltaic greenhouse, characterized in that: include: The unequal slope sawtooth roof structure according to any one of claims 1 to 9; and A drainage ditch arranged on the ground and surrounding the unequal slope sawtooth roof structure; Wherein, rainwater flowing in the gutter formed by the drainage device of the unequal slope sawtooth roof structure is guided into the drainage ditch for discharge.

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