A greenhouse insulation system and its insulation method

Abstract

This invention relates to a greenhouse insulation system and method. The greenhouse insulation system includes a covering structure operably attached to the top of a greenhouse frame, comprising an outer covering layer and a retractable inner covering layer; at least one light-concentrating element disposed between the inner and outer covering layers in a manner that allows it to deflect relative to sunlight in response to changes in the sunlight trajectory; and at least one heat-collecting assembly disposed on the inner covering layer away from the light-concentrating element and movably connected to the greenhouse frame. The heat-collecting assembly is configured to be driven and oriented in response to changes in the sunlight trajectory towards at least one concentrating position formed by the deflection of the light-concentrating element relative to sunlight. This application uses the light-concentrating element to focus and collect sunlight onto the heat-collecting assembly, and then uses the heating liquid in the heat-collecting assembly to supplement heat to the desert greenhouse at night, improving the availability of desert resources and maintaining the needs of crop growth and survival at night.

Description

Technical Field

[0001] This invention relates to the field of desert greenhouse technology, and in particular to a greenhouse insulation system and its insulation method. Background Technology

[0002] Desert regions are characterized by extremely low rainfall, high evaporation rates, low soil moisture content, and low vegetation cover. Currently, desert-like areas account for approximately 20% of the global land area. Due to their rapid evaporation, large diurnal temperature variations, and strong winds, deserts are not suitable for human habitation, crop cultivation, or animal husbandry. Consequently, about one-fifth of the world's land area remains undeveloped. In response to this situation, those skilled in the art have proposed technical solutions for constructing greenhouses in deserts for crop cultivation.

[0003] CN215683710U discloses a desert planting ecological greenhouse, including a windward wall, a sand guide plate, a keel, and a front wall; the sand guide plate is fixed to the front side of the top of the windward wall by bolts; the top of the front end of the windward wall is embedded and connected to the rear end of the keel, and the top of the front end of the windward wall is fixed to the rear end of the keel by bolts; the bottom of the front end of the windward wall is embedded on the top of the front wall, and the bottom of the front end of the windward wall is fixed to the top of the front wall by bolts; the keel includes longitudinal ribs and transverse ribs; multiple longitudinal ribs and multiple transverse ribs are provided, and the multiple longitudinal ribs and multiple transverse ribs are arranged in a grid pattern.

[0004] However, desert regions have unique climatic characteristics such as large diurnal temperature variations and strong winds. Given this large diurnal temperature range, when traditional greenhouses are used in desert areas, the strong sunlight during the day, while providing the necessary light for plant growth, can also lead to excessive transpiration and water loss, which in turn affects photosynthesis. At night, the large diurnal temperature range causes a sharp drop in temperature, making crops susceptible to frost damage or unable to adapt to the changing environment due to frequent temperature fluctuations. Therefore, improving the distribution and utilization efficiency of solar heat to balance diurnal temperature fluctuations and maintain a suitable growing environment is a pressing issue for desert greenhouse cultivation.

[0005] In addition, given the strong winds and sandstorms in desert regions, the roofs of desert greenhouses may accumulate large amounts of sand. Over time, this not only increases the load on the greenhouse frame, making it susceptible to subsidence and collapse, but more importantly, the continuously accumulating sand layer weakens the intensity of natural light, reducing the light transmittance of the greenhouse roof or even blocking light completely, ultimately significantly impacting the normal growth of crops.

[0006] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the present invention provides a greenhouse insulation system and insulation method thereof, which aims to solve at least one or more technical problems existing in the prior art.

[0008] To achieve the above objectives, the present invention provides a greenhouse insulation system, comprising:

[0009] A covering structure operably attached to the top of a greenhouse frame, comprising an outer covering layer and a retractable inner covering layer;

[0010] At least one light-concentrating element is disposed between the inner and outer cladding layers in such a way that it can deflect relative to the sunlight in response to changes in the sunlight trajectory;

[0011] At least one heat collection component is disposed on the side of the inner covering layer away from the light-collecting element and is movably connected to the greenhouse frame.

[0012] in,

[0013] The solar collector is configured to be driven and oriented in response to changes in the solar path to at least one concentrating position formed by the relative deflection of the concentrator relative to the sunlight.

[0014] This invention uses a plate-type concentrator to focus sunlight onto a heat-collecting assembly containing a circulating heat-absorbing fluid. The sunlight heats the fluid within the assembly, thus collecting and storing daytime solar energy. At night, when temperatures drop, the heat-absorbing fluid releases the stored heat, providing supplemental heat to the greenhouse and creating a suitable temperature environment for crop growth. The invention uses a sunlight sensor to determine the direction of sunlight and continuously or periodically adjusts the tilt angle of the plate-type concentrator during sunshine to facilitate its reception of sunlight and the extraction of solar energy.

[0015] Preferably, the heat collection assembly includes a heat-absorbing unit configured with a recyclable heat-absorbing medium. The heat-absorbing unit is connected to the greenhouse frame via an adjustable first traction line and a second traction line, allowing it to move to a concentrating position based on adjustments to the first and second traction lines. This invention uses adjustable traction ropes to adjust the working position of the heat-absorbing unit. Based on changes in the daytime sunlight trajectory, the system controller dynamically adjusts the spatial position of the heat collection assembly within the greenhouse according to the concentrating position of the beam path of the plate-type concentrator. This ensures the heat collection assembly remains continuously at the target concentrating position and absorbs more heat through the heat-absorbing fluid, thereby increasing the heating time of the heat collection assembly at night.

[0016] Preferably, the heat collection assembly further includes a heat release unit in fluid communication with the heat absorption unit, the heat release unit being arranged at the bottom of the greenhouse frame to allow the heat absorption medium to flow and release heat from sunlight.

[0017] Preferably, the deflection of the concentrator relative to sunlight in response to changes in the sunlight trajectory is performed in such a way that the concentrator is partially or completely oriented towards the direction of sunlight. In this invention, when the direction of sunlight changes, the system controller performs deflection adjustment on the concentrator in such a way that the concentrator is substantially directly facing the direction of sunlight, so that the concentrator receives more sunlight and thus forms a concentrating position with high energy density on the side corresponding to the heat-absorbing unit.

[0018] Preferably, the greenhouse frame includes several vertical frames and an arched frame connected between the vertical frames, wherein the inner covering layer can be rolled up and laid on the arched frame.

[0019] Preferably, the greenhouse frame further includes a diagonal bracing frame connected to the vertical frame, the diagonal bracing frame being connected to the light-concentrating element via a rotating motor to hold the light-concentrating element between the inner and outer covering layers.

[0020] Preferably, the first traction line is connected to the greenhouse frame in a manner that adjusts the vertical movement of the heat-absorbing unit, and the second traction line is connected to the greenhouse frame in a manner that adjusts the lateral movement of the heat-absorbing unit.

[0021] Preferably, the greenhouse insulation system provided by the present invention further includes one or more sunlight sensors configured on the top of the greenhouse frame for determining the angle of sunlight tilt based on changes in the sunlight trajectory.

[0022] Preferably, the present invention also relates to a greenhouse insulation method based on a greenhouse insulation system, which may include the following steps:

[0023] Provide a greenhouse frame with a top covering structure, the covering structure including an outer covering layer and a rollable inner covering layer;

[0024] Provide at least one light-concentrating element disposed between the inner cladding layer and the outer cladding layer;

[0025] Provide at least one heat collection component disposed on the side of the inner covering layer away from the light-collecting element and movably connected to the greenhouse frame;

[0026] The solar collector is driven and oriented to at least one concentrating position formed by the relative deflection of the concentrator due to changes in the trajectory of sunlight in response to changes in the trajectory of sunlight.

[0027] Preferably, the greenhouse insulation method provided by the present invention further includes: deflecting at least one light-concentrating element in response to changes in the trajectory of sunlight so as to form at least one light-concentrating position, with at least one light-concentrating element partially or entirely facing the direction of sunlight. Attached Figure Description

[0028] Figure 1 This is a simplified structural diagram of a greenhouse frame according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a greenhouse according to a preferred embodiment of the present invention;

[0030] Figure 3 This is a plan view of a light-concentrating element installed on a crossbeam frame and a diagonal brace frame according to a preferred embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the structure of a light-concentrating element according to a preferred embodiment of the present invention;

[0032] Figure 5 This is a preferred embodiment of the present invention, which provides a correspondence between the deflection angle of the concentrator and the direct angle of sunlight, as well as a correspondence between the heat collection component and the at least one concentrating position formed by the concentrator due to the deflection of the concentrator relative to sunlight.

[0033] Figure 6 This is a schematic diagram of the structure of a sunlight sensor according to a preferred embodiment of the present invention;

[0034] Figure 7 This is a control principle diagram of a greenhouse insulation system according to a preferred embodiment of the present invention.

[0035] List of reference numerals

[0036] 100: Greenhouse frame; 200: Covering structure; 110: Vertical frame; 120: Horizontal beam frame; 130: Diagonal brace frame; 140: Arched frame; 150: Heat collection component; 151: First traction line; 152: Second traction line; 210: Outer covering layer; 220: Inner covering layer; 230: Empty area; 240: Light concentrator; 250: Controller; 211: Sunlight sensor; 212: Substrate; 213: Protective cover; 214: Shading surface; 215: Light leakage slit; 216: First photosensitive plate; 217: Second photosensitive plate; 221: First driver; 222: Second driver; 241: Light-transmitting part; 242: Mounting part; 243: Rotating motor; 244: Support column. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0038] like Figure 1 As shown, the present invention provides a greenhouse insulation system, which may include:

[0039] A covering structure 200 operably attached to the top of the greenhouse frame 100 includes an outer covering layer 210 and a retractable inner covering layer 220.

[0040] At least one light-concentrating element 240 is disposed between the inner cladding layer 220 and the outer cladding layer 210 in such a way that it can be deflected relative to the sunlight in response to changes in the sunlight trajectory;

[0041] At least one heat collection component 150 is disposed on the side of the inner covering layer 220 away from the light concentrator 240 and is movably connected to the greenhouse frame 100.

[0042] in,

[0043] The solar collector 150 is configured to be driven and oriented in response to changes in the solar path to at least one concentrating position formed by the relative deflection of the concentrator 240 to the sunlight.

[0044] According to a preferred embodiment, the greenhouse insulation system of the present invention further includes an industrial controller for performing data processing and equipment control, namely... Figure 7 The controller 250 is shown. Specifically, the controller 250 can be used to control the activation and retraction of the covering structure 200. The controller 250 can be used to adjust the deflection angle of the concentrator 240 relative to sunlight. The controller 250 can be used to control the activation of the heat collection assembly 150 and the movement of at least one concentrating position formed relative to the concentrator 240 due to its deflection relative to sunlight.

[0045] Specifically, the industrial controller may include any one or a combination of one or more microprocessors, central processing units, microcontrollers, digital signal processors, or similar devices. The industrial controller can be a processor of a terminal device (such as a central control computer, mobile phone, etc.) or a processor of various devices (such as drive motors). Therefore, the controller 250 described in this invention may include any one or all of a terminal processor and a device processor.

[0046] Figure 2 A schematic diagram of a greenhouse structure according to a preferred embodiment is shown. This greenhouse can be constructed from, for example... Figure 1 The greenhouse frame 100 shown is constructed. Specifically, the greenhouse frame 100 can be assembled using pipe supports. Several greenhouse frames 100 can be arranged side by side to form, for example... Figure 2 The greenhouse shown. Specifically, Figure 1 The greenhouse frame 100 shown can be from Figure 2 The greenhouse frame 100 is formed as seen from the perspective perpendicular to the plane of the paper, and multiple... Figure 1 The greenhouse frame 100 shown can extend inward along the direction perpendicular to the paper and be combined with each other to form, for example... Figure 2 The greenhouse shown is noteworthy. It is worth noting that, as shown in the example... Figure 1 Description of greenhouse frame 100 shown Figure 2 The structural components of the greenhouse shown are for illustrative purposes only. For ease of explanation, Figure 1 The greenhouse frame 100 shown can also be considered equivalent to a greenhouse, the difference being the arrangement of the exterior structure and other greenhouse structural components.

[0047] According to a preferred embodiment, the greenhouse frame 100 may include two parts: an above-ground frame and an underground frame (not shown in the figure). The underground frame can be laid in the sand layer as the foundation of the greenhouse structure. A planting layer for filling planting soil can be laid between the above-ground frame and the underground frame.

[0048] According to a preferred embodiment, the underground framework may include multiple rectangular frame-like enclosing structures. These rectangular frame-like enclosing structures can be arranged sequentially and intermittently on their radially outer or inner sides, forming a "U"-shaped structure that encloses each other when viewed perpendicular to the sand layer. Multiple intermittently arranged helical columns can be connected to the side of the rectangular frame enclosing structure facing the sand. Each helical column is inserted substantially vertically into the sand layer to stabilize the enclosing structure, which serves as the foundation of the greenhouse structure, within the sand. Specifically, the outer periphery of the helical columns may be provided with continuous or discontinuous threads, which facilitate rapid insertion of the helical columns into the sand layer and, to some extent, improve settlement in loose sand.

[0049] According to a preferred embodiment, the above-ground framework consists of a tubular frame structure. See also Figure 1 The above-ground framework may include multiple vertical frames 110 and arched frames 140. Specifically, the multiple vertical frames 110 are connected to the top surface of the underground framework in a substantially vertical manner. The multiple arched frames 140 can be arranged above the underground framework by connecting one or more adjacent vertical frames 110, thereby enabling the construction of structures such as... Figure 1 The covering structure 200 shown is attached to the top surface of the greenhouse frame 100.

[0050] According to a preferred embodiment, for a large-span arched frame 140, a passageway may not be provided between two adjacent arched frames 140. In other words, the connecting portion of two adjacent arched frames 140 can use the same arch column (e.g., connecting the same vertical frame 110). In particular, when the arched frame 140 is constructed with a large span (i.e., the distance between the two arch columns forming a single arch is large), the connecting arch area provided inside the arched frame 140 can allow large planting equipment (such as seeders, harvesters, etc.) to pass through.

[0051] According to a preferred embodiment, see Figure 1 The ground-level frame also includes multiple horizontal beam frames 120 and diagonal bracing frames 130. Specifically, the multiple horizontal beam frames 120 can be respectively installed on the top and sides of the vertical frame 110. These horizontal beam frames 120 can serve as the top and side support structures of the greenhouse frame 100, used to construct the exterior facade structure of the greenhouse. Further, as... Figure 1 and Figure 3 As shown, the diagonal bracing frame 130 can be constructed as a support rod structure inclined relative to the ground, and the diagonal bracing frame 130 can be connected and held between two crossbeam frames 120 located at the top and bottom sides of the greenhouse.

[0052] According to a preferred embodiment, one or more light-concentrating elements 240 that can be deflected relative to sunlight to adjust the focusing position of the light can be constructed on the top surface of the greenhouse frame 100 via the multi-braced frame 130. Further, as... Figure 3 As shown, the light-concentrating element 240 is arranged within a frame formed by connecting and enclosing multiple crossbeam frames 120 and diagonal bracing frames 130. In particular, as a non-limiting example, one or more light-concentrating elements 240 may be arranged side by side in the same frame from top to bottom and / or from left to right.

[0053] According to a preferred embodiment, such as Figure 3As shown, the focusing element 240 can be connected to the inclined support frame 130 on both sides via rotating motors 243 arranged on both sides. Specifically, the rotating motors 243 are arranged on the side of the inclined support frame 130 and connected to the support legs 244 on both sides of the focusing element 240.

[0054] Furthermore, the rotating motor 243 is communicatively coupled to the controller 250, so that the rotating motor 243 can be actuated in response to control commands from the controller 250 to drive the concentrator 240 to rotate, thereby adjusting the deflection angle of the concentrator 240 relative to sunlight. Specifically, as shown in... Figure 1 Taking the greenhouse frame 100 shown as an example, one or more light-concentrating elements 240 are symmetrically arranged on both sides of the top of the greenhouse frame 100.

[0055] According to a preferred embodiment, the light-concentrating element 240 can be configured as a planar or plate-shaped lens structure capable of focusing light. As an example without limitation, such as... Figure 4 As shown, the light-concentrating element 240 may include a light-transmitting portion 241 and a mounting portion 242. The light-transmitting portion 241 may be a convex lens structure. The light-transmitting portion 241 can be connected to the inclined support frame 130 via the mounting portion 242, and thus held at the top of the greenhouse frame 100 for receiving and concentrating sunlight. In particular, the mounting portion 242 may be arranged at the circumferential edge of the light-transmitting portion 241 and may be integrally formed with the light-transmitting portion 241.

[0056] According to a preferred embodiment, in this invention, the covering structure 200 attached to the top surface of the greenhouse frame 100 may include at least two layers, namely an outer covering layer 210 and an inner covering layer 220. Specifically, the inner covering layer 220 may be disposed on the side of the outer covering layer 210 that is away from sunlight. Specifically, as... Figure 1 As shown, the focusing element 240 can be disposed in the empty area 230 between the inner cladding layer 220 and the outer cladding layer 210. That is, the inner cladding layer 220 and the outer cladding layer 210 are spaced apart from each other, and the empty area 230 where the focusing element 240 is located is the gap between the inner cladding layer 220 and the outer cladding layer 210. Further, the focusing element 240 is mounted on a diagonal bracing frame 130, which is located in the gap between the inner cladding layer 220 and the outer cladding layer 210, i.e., as shown... Figure 1 The empty area 230 between the inner covering layer 220 and the outer covering layer 210 shown.

[0057] According to a preferred embodiment, the outer covering layer 210 can be a light-transmitting film made of a low-adhesion material (such as plastic). This outer covering layer 210 allows sunlight to penetrate into the greenhouse while preventing dust and rainwater from entering. Specifically, since dust and other pollutants often accumulate on the outer covering layer 210, it can be configured as follows: Figure 1The outer covering 210 is laid at an angle relative to the ground on the sun-facing side of the inclined support 130 to guide sand and dust particles down the slope of the outer covering 210, thereby preventing accumulation. Specifically, the outer covering 210 can be laid on the sun-facing side of the inclined support 130 and / or the light-concentrating element 240, so that the outer covering 210 can block wind, sand, and rainwater from touching the light-concentrating element 240.

[0058] According to a preferred embodiment, the connecting arch columns (such as the commonly connected vertical frame 110) between adjacent arched frames 140 can be constructed as hollow structures, allowing the outer covering layer 210 to be connected to them in a manner that guides sand and dust particles into the hollow connecting arch columns. Figure 2 As shown, when the bottom of the outer covering layer 210 connects to the outer edge of the top of the connecting arch column, the dust particles accumulated on the surface of the outer covering layer 210 can slide down its slope and fall into the connecting arch column located therein, thus being guided into the ground by the hollow connecting arch column. Setting the outer covering layer 210 and connecting arch column structure in the above manner facilitates the self-cleaning of the greenhouse facade, prevents dust particles from accumulating at the top of the greenhouse and affecting its stability, and reduces light obstruction. Furthermore, the air accumulated inside the hollow connecting arch column can absorb heat during the day and release heat at night, thereby helping plants maintain a suitable growth temperature at night.

[0059] According to a preferred embodiment, when the connecting arch columns (such as the commonly connected vertical frame 110) used to connect adjacent arched frames 140 are constructed as hollow structures, one end of the connecting arch column inserted into the ground can be connected to a heat storage tank. Specifically, the heat storage tank can contain heat storage material, such as sand, so that sand collected from the top of the greenhouse can serve as a supplementary source of heat storage material in the heat storage tank.

[0060] According to a preferred embodiment, the inner covering 220 can be an insulating blanket. This insulating blanket-type inner covering 220 can be used to maintain the internal temperature of the greenhouse. Specifically, during the daytime, the inner covering 220 can be rolled up to allow sunlight to enter the greenhouse; while at night, the inner covering 220 can be unfolded to reduce heat loss from the greenhouse and maintain a stable temperature environment inside. Specifically, the inner covering 220 can be configured as follows... Figure 1 The curved arch shown is adjustablely laid on the sun-facing side of the arch frame 140 to control the sunlight intensity and ambient temperature and humidity inside the greenhouse.

[0061] According to a preferred embodiment, the inner covering layer 220 can be constructed as a double-layer insulation blanket structure. Further, when the inner covering layer 220 is constructed as a double-layer structure, the arched frame 140 can also be constructed as a double-layer structure, i.e., an inner arch and an outer arch. Specifically, each layer of the arched frame 140 (such as the inner arch and the outer arch) can be fitted with at least one layer of the inner covering layer 220.

[0062] According to a preferred embodiment, when the inner covering layer 220 of the double-layer insulation blanket structure is not used, it can be stored by, for example, an electric roller shutter. As a non-limiting example, the electric roller shutter may have a shaft connected to the double-layer insulation blanket and multiple movable components (not shown) capable of moving on the arched frame 140. The movable components can move along the frame of the arched frame 140 under the drive of a drive motor, thereby causing the shaft to roll up the double-layer insulation blanket.

[0063] According to a preferred embodiment, when a concentrator 240 for focusing sunlight is disposed between the inner covering layer 220 and the outer covering layer 210, the concentrator 240 can focus the light entering the greenhouse through the outer covering layer 210, thereby allowing the sunlight to be more concentratedly projected or applied to the desired target location. That is, when the concentrator 240 is deflected toward or relative to the direction of sunlight, it can form at least one concentrating position on the side facing away from the sunlight or toward the interior of the greenhouse by concentrating the light. In particular, in this invention, the light-concentrating element 240 is a lens structure. Therefore, the refractive index or transmittance of the light-concentrating element 240 can be determined based on parameters such as the material and thickness of the light-concentrating element 240. Based on the known refractive index or transmittance of the light-concentrating element 240, when the controller 250 determines the tilt angle of the sunlight and adjusts the deflection of the light-concentrating element 240 in a manner that is substantially perpendicular to the direction of sunlight irradiation, the path of the sunlight passing through the light-concentrating element 240 can be determined, and the position with the maximum overlapping luminous flux on the sunlight irradiation path is the aforementioned target position.

[0064] According to a preferred embodiment, such as Figure 1 As shown, one or more sunlight sensors 211 for measuring the tilt angle of sunlight can be installed on the top of the greenhouse frame 100. The one or more sunlight sensors 211 can be installed on the top crossbeam frame 120 and / or the diagonal brace frame 130. Preferably, the one or more sunlight sensors 211 can be arranged substantially evenly on the crossbeam frame 120 and / or the diagonal brace frame 130 at predetermined intervals. Specifically, one sunlight sensor 211 is installed at each end of the crossbeam frame 120 and / or the diagonal brace frame 130, and / or one sunlight sensor 211 is installed at the midpoint of each crossbeam frame 120 and / or the diagonal brace frame 130.

[0065] In this invention, the sunlight sensor 211 is used to acquire the sunlight trajectory (specifically, the direction of illumination / tilt angle) and the intensity of sunlight, thereby allowing the controller 250 to drive the concentrator 240 to deflect and converge sunlight relative to it based on the sunlight direction of illumination / tilt angle acquired by the sunlight sensor 211. Specifically, the final determined sunlight direction of illumination / tilt angle and its intensity can be derived from the average value of measurement data from several sunlight sensors 211.

[0066] As an example of a non-limiting instance, see [link to relevant documentation]. Figure 6 The sunlight sensor 211 may include a substrate 212 and a plurality of photosensitive plates disposed on the substrate 212. In this invention, four photosensitive plates are configured, and the four photosensitive plates are arranged in a similar manner. Figure 6 The cross-shaped arrangement shown is on the surface of substrate 212.

[0067] According to a preferred embodiment, see Figure 6 A protective cover 213 is also provided on the substrate 212 to cover and shield the four photosensitive plates. Each opaque sidewall of the protective cover 213 is perpendicular to the four photosensitive plates. Furthermore, the top surface of the protective cover 213 is configured as a light-shielding surface 214. The positions of the light-shielding surface 214 corresponding to the four photosensitive plates are respectively configured to allow light to pass through and illuminate the photosensitive plates via light-leaking slits 215. By blocking sunlight through the top light-shielding surface 214 and the sidewalls of the protective cover 213, sunlight can only reach the photosensitive plates through the light-leaking slits 215, thereby preventing sunlight from shining on the photosensitive plates from elsewhere and thus affecting the measurement results.

[0068] According to a preferred embodiment, see Figure 6 Each photosensitive plate disposed on the substrate 212 is composed of a first photosensitive plate 216 and a second photosensitive plate 217 that are independent of each other. The first photosensitive plate 216 and the second photosensitive plate 217 can be triangular photosensitive plates, preferably right triangles, so that the first photosensitive plate 216 and the second photosensitive plate 217 can form a rectangular photosensitive plate by combining the hypotenuses of the right triangles.

[0069] Specifically, the principle of measuring the tilt angle of sunlight using the sunlight sensor 211 can be as follows: when sunlight shines on the sunlight sensor 211, the photosensitive plate exposed to sunlight will generate a corresponding current; based on the magnitude of the current generated by the photosensitive plate, the angle between the projection of sunlight onto the corresponding vertical plane and the horizontal plane can be obtained, and the direction of sunlight tilt can be determined based on this angle (for the specific working principle of determining the direction of sunlight tilt using the sunlight sensor 211, please refer to CN108036764A, which is cited in its entirety here to avoid omission, as discussed in this article). On the other hand, the intensity of sunlight irradiation can be calculated based on the current value generated by the photosensitive plate using the sunlight sensor 211.

[0070] Specifically, the sunlight tilt angle determined by the controller 250 based on the sunlight direction data measured by the sunlight sensor 211 can serve as a data source for adjusting the deflection direction and amplitude / angle of the concentrator 240. In other words, the sunlight sensor 211 continuously or periodically acquires the sunlight angle, and the controller 250 determines the sunlight tilt angle in response to the elevation angle between the sunlight direction acquired by the sunlight sensor 211 and the horizontal plane. It should be understood that numerous prior art optical detection devices for measuring the sunlight angle and intensity have been disclosed, and this invention is not intended to improve or limit the structure and detection principle of the sunlight sensor 211. The above examples are only for understanding and illustration and should not be considered as specific limitations on this invention. In view of this, those skilled in the art can also perform this task in other ways not disclosed herein to obtain sunlight angle and intensity detection data.

[0071] According to a preferred embodiment, after the controller 250 determines the tilt angle of the sunlight based on the elevation angle between the sunlight direction and the horizontal plane obtained by the sunlight sensor 211, the controller 250 can drive one or more concentrators 240 to deflect relative to the sunlight direction via a rotating motor 243 that is driveably connected to the concentrator 240. That is, the controller 250 adjusts the deflection angle of the concentrator 240 in relation to changes in the sunlight's angle of incidence. Specifically, as... Figure 5 As shown, assuming the sun moves in a circle above the concentrator 240 from left to right, at time A, the angle of sunlight is α1, and the deflection angle of the concentrator 240 is β1; when the sun moves to time B, the angle of sunlight changes from α1 to α2, and the deflection angle of the concentrator 240 is also adjusted from β1 to β2 accordingly.

[0072] According to a preferred embodiment, in order to provide high light-gathering efficiency for the concentrator 240 and facilitate the determination of the target position (or concentrating position) for sunlight convergence, in this invention, the orientation of the concentrator 240 after deflection intersects with and is preferably orthogonal to the angle of sunlight, thereby allowing sunlight to strike the concentrator 240 substantially perpendicularly, so that the concentrator 240 receives as much perpendicularly incident sunlight as possible. That is, when the controller 250 determines the tilt angle of sunlight based on the angle of elevation between the sunlight direction and the horizontal plane obtained by the sunlight sensor 211, the controller 250 adjusts the deflection angle of the concentrator 240 in a manner that makes the concentrator 240 substantially facing the direction of sunlight. In addition, when the concentrator 240 is deflected substantially perpendicular to the direction of sunlight, the angle of elevation β between the sunlight and the horizontal plane and the angle α between the concentrator 240 and the horizontal plane are almost complementary.

[0073] According to a preferred embodiment, when the concentrator 240 is deflected in a manner substantially facing the direction of sunlight, the focusing position formed by the concentrator 240 on the side facing away from the sunlight or towards the interior of the greenhouse can be determined based on the known refractive index or transmittance of the concentrator 240. Specifically, when sunlight is focused using the concentrator 240 with a known refractive index or transmittance, the distance between the focal point of the light and the concentrator 240 can be calculated, thereby forming a focusing position on the side of the concentrator 240 facing away from the sunlight (e.g., Figure 5 The spatial position of the intersection point of several transmitted light beams shown can be determined thereby. Alternatively, the correlation between the refractive index of the focusing element 240, the angle between the focusing element 240 and the incident direction of the light, and the focusing position can be set in advance by the administrator through experimental measurement, and / or from predetermined threshold programming, machine learning results.

[0074] According to a preferred embodiment, after adjusting the concentrator 240 to deflect substantially directly towards the direction of sunlight based on the change in the sunlight trajectory, thereby forming a concentrating position on the back side of the concentrator 240, the controller 250 drives the heat collection assembly 150 to move and orient itself toward at least one concentrating position formed by the deflection of the concentrator 240 relative to the sunlight, thereby absorbing and storing solar energy through the heat collection assembly 150 for backup.

[0075] According to a preferred embodiment of the present invention, the heat collection assembly 150 may include one or more heat storage units. Specifically, the heat storage unit may be a heat-absorbing pipe that allows the heat-absorbing medium to circulate. This heat-absorbing pipe can absorb solar heat transmitted through the concentrator 240 through the heat-absorbing medium circulating inside. Further, the heat-absorbing medium inside the heat-absorbing pipe can be circulated into an insulated water tank (not shown in the figure) by a pump, thereby storing the recovered heat through the heat-absorbing medium. As a non-limiting example, in the present invention, the heat-absorbing medium may be water.

[0076] According to a preferred embodiment, the heat storage unit (or heat absorption pipeline) can be connected to the greenhouse frame via an adjustable traction rope. Specifically, as shown... Figure 1 As shown, the heat storage unit can be connected and held at the top of the greenhouse frame 100 via a first traction line 151 and a second traction line 152, respectively. More specifically, as... Figure 1 As shown, the heat storage unit is held on the backlight side of the inner covering layer 220 by the first traction line 151 and the second traction line 152.

[0077] According to a preferred embodiment, such as Figure 1As shown, the first traction line 151 can be connected to the top of the horizontal beam frame 120 or the top of the vertical frame 110 at the top of the greenhouse frame 100. The first traction line 151 is connected to a first actuator 221, and by controlling the first actuator 221, the winding length of the first traction line 151 can be adjusted, thereby adjusting the vertical position of the heat storage unit. On the other hand, the second traction line 152 can be connected to the horizontal beam frame 120 on the side of the greenhouse frame 100 or the lower vertical frame 110. The second traction line 152 is connected to a second actuator 222, and by controlling the second actuator 222, the winding length of the second traction line 152 can be adjusted, thereby adjusting the horizontal position of the heat storage unit. Therefore, by adjusting the winding length of the first traction line 151 and / or the second traction line 152, the heat storage unit can be controlled to correspond to the focusing position formed by the concentrator 240. Specifically, the first driver 221 and the second driver 222 can be drive motors, which can be mounted on the vertical frame 110 and / or the crossbeam frame 120.

[0078] According to a preferred embodiment, such as Figure 5 As shown, after the angle of sunlight and the deflection angle of the concentrator 240 change, the focusing position of the converging light path formed by the concentrator 240 also changes. Specifically, assuming that the distance L between the focusing position of sunlight incident at a vertical angle and the concentrator 240 is determined based on the refractive index of the concentrator 240, the specific coordinates of the focusing position in the vertical plane can be determined by trigonometric functions based on the angle α between the angle of sunlight and the horizontal plane and the distance L. These coordinates have the central axis of the concentrator 240 as the origin.

[0079] According to a preferred embodiment, after calculating the specific coordinates of the focusing position, the length of the distance between the coordinates and the fixed positions of the first traction line 151 and the second traction line 152 is the target length. Based on the target length, the first driver 221 and the second driver 222 can be controlled to adjust the first traction line 151 and the second traction line 152 to the target length, so as to move and keep the heat storage unit in the focusing position and absorb solar heat through the heat-absorbing medium filled therein.

[0080] According to a preferred embodiment, in this invention, one or more light sensors can be arranged on the heat storage unit (or heat absorption pipeline). These light sensors can be used to measure the intensity of sunlight shining on the wall of the heat absorption pipeline. Based on the intensity distribution characteristics of sunlight on the heat absorption pipeline, the controller 250 can further fine-tune the heat absorption pipeline after determining the approximate spatial position of the focusing position formed by the focusing element 240. Furthermore, one or more temperature sensors can be arranged inside the heat absorption pipeline to measure the temperature change of the heat absorption medium within the pipeline. Specifically, when the heat absorption medium (such as water) stored in the heat absorption pipeline is heated to a set temperature, it can be pumped to an insulated water tank, and new heat absorption medium can be continuously circulated to the heat absorption pipeline to continuously absorb solar heat.

[0081] According to a preferred embodiment of the invention, the heat collection assembly 150 further includes one or more heat release units. Similar to or similar to the heat storage unit, the heat release unit can be a heat release pipeline that allows the heat-absorbing medium to circulate. The heat release pipeline can be located at the bottom of the greenhouse. Specifically, multiple heat release pipelines can be laid intermittently in the sand layer and / or along the greenhouse, especially around the planting area.

[0082] According to a preferred embodiment, the heat-absorbing pipe and the heat-releasing pipe can be connected by a flexible hose. Further, a storage tank and an insulation box can be provided between the heat-absorbing pipe and the heat-releasing pipe. The storage tank can be used to supply room temperature or low temperature water to the heat-absorbing pipe, and to store room temperature or low temperature water after heat dissipation in the heat-releasing pipe. Additionally, the room temperature or low temperature water stored in the storage tank can be used for crop irrigation and to regulate the temperature and humidity inside the greenhouse. The insulation box is used to store high temperature water formed from the heat-absorbing pipe due to the absorption of solar heat. Specifically, the input end of the heat-absorbing pipe is connected to the storage tank. The output end of the heat-absorbing pipe is connected to the insulation box. The insulation box is connected to the heat-releasing pipe. Room temperature or low temperature water flowing out of the heat-releasing pipe can be introduced into the storage tank. In particular, during the low-temperature period at night, the high temperature water stored in the insulation box can be introduced into the heat-releasing pipe, releasing heat into the greenhouse through the high temperature water flowing in the heat-releasing pipe, and retaining the heat inside the greenhouse with the assistance of the inner covering layer 220, thereby raising the greenhouse ambient temperature at night.

[0083] As an example of non-limiting significance, Figure 7 The control principle diagram of the greenhouse insulation system provided by the present invention is shown. Specifically, in the present invention, during the daytime, the controller 250 determines the direction of sunlight tilt (i.e., the elevation angle between the direction of sunlight and the horizontal plane) based on the information related to the angle of sunlight obtained by the sunlight sensor 211, and controls the rotating motor 243 to drive one or more light-concentrating elements 240 to deflect towards the sunlight so as to form at least one light-concentrating position for collecting sunlight through the light-concentrating elements 240.

[0084] Furthermore, based on the focusing position formed by the light-concentrating element 240 due to the collection of sunlight, the controller 250 controls the first driver 221 and the second driver 222 based on the coordinates of the focusing position to drive the first traction wire 151 and the second traction wire 152 connected to the heat-absorbing unit of the heat-collecting assembly 150 to wind up and adjust the position of the heat-absorbing unit, so that the heat-absorbing unit moves and is oriented at the focusing position formed by the light-concentrating element 240, thereby absorbing solar heat through the heat-absorbing medium configured in the heat-absorbing unit and storing the absorbed heat for use at night when the temperature is low to raise and maintain the internal temperature of the greenhouse.

[0085] According to the greenhouse insulation system described in this invention, this invention also relates to a greenhouse insulation method based on the greenhouse insulation system, which may include the following steps:

[0086] A greenhouse frame 100 is provided with a top covering structure 200, the covering structure 200 including an outer covering layer 210 and a retractable inner covering layer 220.

[0087] One or more light-concentrating elements 240 are provided between the inner cladding layer 220 and the outer cladding layer 210;

[0088] A heat collection assembly 150 is provided on the side of the inner covering layer 220 away from the light-concentrating element 240 and is movably connected to the greenhouse frame 100.

[0089] The solar collector 150 is driven and oriented in response to changes in the solar trajectory to at least one concentrating position formed by the relative deflection of one or more concentrators 240 to the sunlight.

[0090] According to a preferred embodiment of the present invention, the concentrator 240 is deflected in response to changes in the sunlight path in a manner that partially or entirely faces the direction of sunlight to form at least one concentrating position for indicating the movement of the heat collection assembly 150.

[0091] Those skilled in the art will understand that, as long as the objectives of the present invention can be achieved, other steps or operations may be included before, after, or between the steps described above, for example, to further optimize and / or improve the method described in the present invention. Furthermore, although the method described in the present invention is shown and described as a series of actions performed sequentially, it should be understood that the method is not limited by the order. For example, some actions may occur in a different order than that described herein. Alternatively, one action may occur simultaneously with another action.

[0092] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this invention is defined by the claims and their equivalents. This specification contains multiple inventive concepts; terms such as "preferredly," "according to a preferred embodiment," or "optionally" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept.

Claims

1. A greenhouse insulation system, characterized in that, include: A covering structure (200) operably attached to the top of a greenhouse frame (100) includes an outer covering (210) that allows sunlight to penetrate into the greenhouse and prevents dust and rainwater from entering the greenhouse, and a retractable inner covering (220) that is a heat-insulating blanket for maintaining the temperature inside the greenhouse. The greenhouse frame (100) includes a plurality of vertical frames (110) and an arched frame (140) connected between the vertical frames (110), wherein the inner covering (220) is retractably laid on the arched frame (140). At least one light-concentrating element (240) is disposed between the inner cladding layer (220) and the outer cladding layer (210) in such a way that it can be deflected relative to the sunlight in response to changes in the sunlight trajectory; At least one heat collection component (150) is disposed on the side of the inner covering layer (220) away from the light-concentrating element (240) and is movably connected to the greenhouse frame (100); in, The connecting arch columns between adjacent arched frames (140) are constructed as hollow structures, so that the outer covering layer (210) is connected to the hollow connecting arch columns in a way that introduces sand and dust particles. The inner covering layer (220) is adjustablely laid on the side of the arched frame (140) facing the sun in an arc-shaped form to control the solar irradiance and ambient temperature and humidity inside the greenhouse. The solar collector (150) is configured to be driven and oriented in response to changes in the solar trajectory to at least one concentrating position formed by the concentrator (240) due to deflection relative to the solar light.

2. The greenhouse insulation system according to claim 1, characterized in that, The heat collection assembly (150) includes a heat-absorbing unit configured with a recyclable heat-absorbing medium, which is connected to the greenhouse frame (100) via an adjustable first traction line (151) and a second traction line (152) so that it can be moved to the light-concentrating position based on the adjustment of the first traction line (151) and the second traction line (152).

3. The greenhouse insulation system according to claim 2, characterized in that, The heat collection assembly (150) also includes a heat release unit in fluid communication with the heat absorption unit, the heat release unit being arranged at the bottom of the greenhouse frame (100) to allow the heat absorption medium to flow and release heat from the sunlight.

4. The greenhouse insulation system according to claim 1, characterized in that, The at least one concentrator (240) deflects relative to the sunlight in response to changes in the sunlight path by means of aligning the concentrator (240) partially or entirely with the direction of sunlight.

5. The greenhouse insulation system according to claim 4, characterized in that, The greenhouse frame (100) also includes a diagonal bracing frame (130) connected to the vertical frame (110), the diagonal bracing frame (130) being connected to a light-concentrating element (240) via a rotating motor (243) to rotatably hold the light-concentrating element (240) between the inner covering layer (220) and the outer covering layer (210).

6. The greenhouse insulation system according to claim 2, characterized in that, The first traction line (151) is connected to the greenhouse frame (100) in a manner for adjusting the vertical movement of the heat-absorbing unit, and the second traction line (152) is connected to the greenhouse frame (100) in a manner for adjusting the lateral movement of the heat-absorbing unit.

7. The greenhouse insulation system according to claim 1, characterized in that, It also includes one or more sunlight sensors (211) configured on top of the greenhouse frame (100) for determining the angle of sunlight tilt based on changes in the sunlight trajectory.

8. A greenhouse insulation method based on a greenhouse insulation system, characterized in that, include: A greenhouse frame (100) is provided with a top covering structure (200), the covering structure (200) including an outer covering layer (210) that allows sunlight to penetrate into the greenhouse and prevents sand and rainwater from entering the greenhouse and an inner covering layer (220) that is retractable and used as an insulating blanket to maintain the temperature inside the greenhouse. The greenhouse frame (100) includes a plurality of vertical frames (110) and an arched frame (140) connected between the vertical frames (110), wherein the inner covering layer (220) is retractably laid on the arched frame (140). At least one light-concentrating element (240) is provided between the inner cladding layer (220) and the outer cladding layer (210); Provide at least one heat collection component (150) disposed on the side of the inner covering layer (220) opposite to the light-concentrating element (240) and movably connected to the greenhouse frame (100); The connecting arch columns between adjacent arched frames (140) are constructed as hollow structures, so that the outer covering layer (210) is connected to the hollow connecting arch columns in a way that introduces sand and dust particles. The inner covering layer (220) is adjustablely laid on the side of the arched frame (140) facing the sun in an arc-shaped form to control the solar irradiance and ambient temperature and humidity inside the greenhouse. The heat collection component (150) is driven and oriented in response to changes in the trajectory of sunlight to at least one concentrating position formed by the concentrator (240) due to deflection relative to the sunlight.

9. The greenhouse insulation method according to claim 8, characterized in that, Also includes: The at least one concentrator (240) is deflected in response to changes in the path of sunlight, in order to form the at least one concentrating position, with the concentrator partially or entirely facing the direction of sunlight.

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