Energy-saving sunlight greenhouse with high heat preservation

Abstract

The utility model discloses a kind of high insulation energy-saving sunlight greenhouse, belong to modern agricultural facilities technical field, including full steel frame earth wall structure, no column flower beam type arch frame and wind circulation ground heat exchange system.Full steel frame earth wall structure has the advantages of earth wall heat preservation and heat storage and steel stability, winter and summer temperature and humidity adjustment effect is remarkable.Arch frame adopts single arch composite flower beam structure, optimizes light angle according to local latitude, load reaches 900Kg and no column obstruction, improves land utilization.Wind circulation ground heat exchange system realizes air and soil heat exchange by air inlet pipeline, heat exchange pipeline, intercommunication pipeline and negative pressure pipeline fan, winter warm summer cool and low energy consumption.The utility model uses the above structure a kind of high insulation energy-saving sunlight greenhouse, with high insulation, high load, low land occupation, low energy consumption characteristics, suitable for large-scale crop planting.

Description

Technical Field

[0001] This utility model relates to the field of modern agricultural facilities technology, and in particular to a high-insulation energy-saving solar greenhouse. Background Technology

[0002] Greenhouses, as core facilities of modern agriculture, play a crucial role in increasing crop yields, extending the growing season, and enriching crop varieties. With the development of agricultural technology, the demand for heat preservation and heating in greenhouses is increasingly prominent. However, traditional greenhouses suffer from numerous technical defects: older-style solar greenhouses mostly use simple earthen wall structures, which, while possessing certain heat absorption, storage, and insulation capabilities, suffer from large footprints (typically 6-8 meters), complex construction processes, high maintenance difficulty, and susceptibility to pests and diseases, severely restricting land utilization and production efficiency; some greenhouses without earthen walls lack sufficient heat preservation and cooling performance, resulting in low temperatures inside the greenhouse in winter and poor cooling effects in summer, affecting the stability of the crop growth environment. Simultaneously, the arch frame design of traditional solar greenhouses suffers from low light-gathering efficiency and limited load-bearing capacity. Conventional arch frames do not optimize the light-gathering angle based on latitude, resulting in low sunlight incidence and significant reflection loss, making it difficult to raise the temperature inside the greenhouse; greenhouses with spans exceeding 12 meters often rely on column support, which not only occupies ground space and reduces land utilization but also results in uneven stress distribution in the load-bearing structure and limited overall load-bearing capacity. In addition, existing greenhouses lack efficient temperature control systems, and rely heavily on external energy sources for winter heating and summer cooling, resulting in high operating energy consumption, which does not meet the needs of energy-saving development.

[0003] Therefore, developing a solar greenhouse that is small in size, easy to construct, has excellent heat preservation and energy-saving effects, stable structure, and good light transmission performance has become an urgent technical problem to be solved in the field of modern agricultural facilities. Utility Model Content

[0004] The purpose of this utility model is to provide a high-insulation, energy-saving greenhouse that simplifies the construction and maintenance process while retaining the excellent heat insulation and heat storage performance of the earthen walls; optimizes the arch frame design to improve lighting efficiency and structural load-bearing capacity, thereby increasing land utilization; and constructs an efficient temperature regulation system to reduce operating energy consumption and achieve natural regulation of winter heating and summer cooling.

[0005] To achieve the above objectives, this utility model provides a high-insulation energy-saving greenhouse, comprising a full steel frame earthen wall structure, a column-free flower beam arch frame, and a wind-circulating ground heat exchange system; the full steel frame earthen wall structure serves as the rear wall and forms a semi-enclosed structure from the left and right sides; the full steel frame earthen wall structure is supported by an arch frame on top and covered with a transparent film for sealing; the wind-circulating ground heat exchange system is located underground in the part enclosed by the full steel frame earthen wall structure.

[0006] Preferably, the all-steel frame earthen wall structure consists of a steel frame and earthen walls; the steel frame serves as the supporting skeleton, and the earthen walls are filled inside the steel frame. It occupies approximately 2 meters in width, and its thermal insulation performance is 5°C greater than that of a structure without earthen walls, while its summer temperature drop is 3°C less.

[0007] Preferably, the column-free flower beam arch frame is a single arch frame composite flower beam structure with a load-bearing capacity of not less than 900Kg.

[0008] Preferably, the light-receiving angle of the column-free arched frame is set according to the local latitude. The optimal light-receiving angle is accurately calculated based on the local latitude, which significantly increases the sunlight incidence rate and reduces reflection loss, and can increase the greenhouse temperature by 2-3℃ under the same conditions.

[0009] Preferably, the air-circulating heat exchange system includes an air inlet duct, a heat exchange duct, a connecting duct, and a negative pressure duct fan; one end of the air inlet duct is connected to the connecting duct; one end of the air outlet duct is connected to the negative pressure duct fan, and the other end is connected to another connecting duct; the two connecting ducts are parallel and connected in the middle by a heat exchange duct.

[0010] Preferably, the air inlet duct and connecting duct, the heat exchange channel and connecting duct, and the air outlet duct and connecting duct of the air circulation heat exchange system are all connected by connecting components.

[0011] Preferably, the other end of the air inlet duct and the end of the air outlet duct connected to the negative pressure duct fan are both connected to the space inside the shed.

[0012] Therefore, this utility model adopts the above-mentioned structure to create a high-insulation energy-saving solar greenhouse, which combines the characteristics of high insulation, high light transmission, high load-bearing capacity, low footprint, and low energy consumption.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of a high-insulation energy-saving solar greenhouse according to the present invention; Figure 2 This is a structural schematic diagram of the column-free flower beam arch frame of this utility model; Figure 3 This is a schematic diagram of the structure of the air circulation ground heat exchange system of this utility model.

[0015] 1. All-steel frame earthen wall structure; 2. Column-free arched beam frame; 3. Air circulation ground heat exchange system; 4. Air inlet duct; 5. Heat exchange duct; 6. Negative pressure duct fan; 7. Connecting duct; 8. Air outlet duct. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0019] like Figure 1 As shown, a high-insulation, energy-saving solar greenhouse is suitable for the latitudinal environment of North China. Its specific structure is as follows: The rear wall structure adopts a full steel frame earthen wall structure1. The full steel frame is constructed using Q235 steel to build the supporting framework, and the earthen wall is filled with local cohesive soil with a filling density controlled at 1.6-1.8 g / cm³. 3 The entire steel frame earthen wall occupies a width of 2 meters. Tests showed that the temperature inside the shed at night in winter was 5°C higher than that without the earthen wall structure, and the temperature inside the shed at noon in summer was 3°C lower than that without the earthen wall structure. In addition, the inside of the earthen wall was dry and there was no obvious phenomenon of pests and diseases.

[0020] The arch frame assembly is a column-free, beam-type arch frame 2, such as... Figure 2 As shown, a single-arch composite flower beam structure is made of hot-dip galvanized steel pipes. The optimal lighting angle is calculated to be 30° based on the latitude of North China. After installation, actual measurements showed that the temperature inside the greenhouse was 2.5°C higher than that of a traditional arch greenhouse under the same lighting conditions. The flower beam structure underwent multi-point load-bearing tests. When the settlement reached 1%, the load-bearing limit was 900Kg, which far exceeded that of a single arch (450Kg) and a single arch + column structure (650Kg). Moreover, there are no columns obstructing the view inside the greenhouse, increasing the ground utilization rate by 20%.

[0021] 3. Air-circulating ground heat exchange system, such as Figure 3As shown, heat exchange pipes 5 are laid parallel to the length of the greenhouse, in pairs, for a total of three groups. Each group is spaced 2-3 meters apart, with a depth controlled at 0.8-1.2 meters. Both ends are connected to connecting pipes 7. One connecting pipe 7 is vertically fitted with an air inlet pipe 4, and the other with a vertical air outlet pipe 8. A negative pressure duct fan 6 is installed on the air outlet pipe 8. Corrosion-resistant, low-resistance pipes are selected as the duct material. The pipe diameter is determined based on the greenhouse area (usually 30-50 cm). Pipe connections are sealed to prevent air leakage.

[0022] The system is mainly operated by a negative pressure duct fan 6. In summer, the negative pressure duct fan 6 creates a negative pressure environment inside the duct, drawing in high-temperature air from the air inlet into the air inlet duct 4. Through the connecting duct 7, the air flows through the heat exchange duct 5, transferring heat to the soil. The air after heat exchange is then discharged into the greenhouse through the air outlet duct 8, thus cooling the greenhouse. In winter, the negative pressure duct fan 6 creates a negative pressure environment inside the duct, drawing in low-temperature air from the air inlet into the air inlet duct 4. Through the connecting duct 7, the air flows through the heat exchange duct 5, transferring heat from the soil to the air. The air after heat exchange is then discharged into the greenhouse through the air outlet duct 8, thus warming the greenhouse.

[0023] Therefore, this utility model adopts the above-mentioned structure to create a high-insulation energy-saving solar greenhouse. Through the synergistic effect of the all-steel frame earthen wall structure, the optimized flower beam arch frame and the air circulation ground heat exchange system, it achieves the technical effects of small footprint, convenient construction, heat preservation and energy saving, and structural stability. It effectively solves many defects of traditional greenhouses and is suitable for large-scale planting of various crops.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A high-insulation, energy-saving solar greenhouse, characterized in that, It includes a full steel frame earthen wall structure, a column-free flower beam arch frame, and a wind-circulating ground heat exchange system; the full steel frame earthen wall structure serves as the rear wall and forms a semi-enclosed structure from the left and right sides; the full steel frame earthen wall structure is supported by an arch frame on top and covered with a transparent membrane for enclosure; the wind-circulating ground heat exchange system is located underground in the part enclosed by the full steel frame earthen wall structure.

2. The high-insulation energy-saving greenhouse according to claim 1, characterized in that, The all-steel frame earthen wall structure consists of a steel frame and earthen walls; the steel frame serves as the supporting skeleton, and the earthen walls are filled inside the steel frame.

3. The high-insulation energy-saving greenhouse according to claim 1, characterized in that: The column-free floral beam arch frame is a single-arch composite floral beam structure.

4. The high-insulation energy-saving greenhouse according to claim 1, characterized in that: The lighting angle of the column-free arched frame is set according to the local latitude.

5. The high-insulation energy-saving greenhouse according to claim 1, characterized in that, The air-circulating heat exchange system includes an air inlet duct, a heat exchange duct, a connecting duct, and a negative pressure duct fan; one end of the air inlet duct is connected to the connecting duct; one end of the air outlet duct is connected to the negative pressure duct fan, and the other end is connected to another connecting duct; the two connecting ducts are parallel and connected in the middle by a heat exchange duct.

6. The high-insulation energy-saving greenhouse according to claim 5, characterized in that: The air inlet ducts and connecting ducts, heat exchange channels and connecting ducts, and air outlet ducts and connecting ducts of the air-circulating heat exchange system are all connected by connecting components.

7. The high-insulation energy-saving greenhouse according to claim 5, characterized in that: The other end of the air inlet duct and the end of the air outlet duct connected to the negative pressure duct fan are both connected to the space inside the shed.

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