A dish-shaped double-arc greenhouse

Abstract

The embodiment of the present invention discloses a dish-shaped double-arc greenhouse, comprising a cushion layer, a foundation provided on the cushion layer, a wall foundation provided on the foundation, the wall foundations arranged in a quadrilateral pattern, a row of fixed bases provided in the middle of the wall foundations, a support frame provided on the fixed bases, an arched frame provided on the middle row of fixed bases and installed on the support frame, a thermal insulation structure layer provided on the outer sides of the support frame and the arched frame, the arc surface of the support frame being larger than the arc surface of the arched frame, air inlets provided at the intervals between the fixed bases on the two long sides, and an exhaust fan provided at the cross section of the arched frame. The greenhouse of the present invention adopts a two-way convection method to solve the function of ventilation and heat dissipation in summer. In winter, a heat exchanger is used to store heat during the day and dissipate heat at night, so as to meet the growth needs of plants in the harsh winter environment.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of greenhouses, and in particular to a dish-shaped double-arc greenhouse. Background Art

[0002] Greenhouse cultivation is one of the commonly used technologies in agriculture today, which enables the cultivation of crops under cold weather conditions in the north. The existing greenhouses in China are mainly divided into three categories: solar greenhouses, multi-span greenhouses and cold sheds.

[0003] Among them, solar greenhouses have low heat storage efficiency, making it difficult to reach temperatures suitable for plant growth. The land utilization rate is only 33%, which is too low. Due to the small area, agricultural machinery is not suitable for farming, making it difficult to achieve agricultural automation.

[0004] The initial investment cost of multi-span greenhouses is too high. Because they lack energy storage equipment, they primarily use electricity and natural gas for heating, which consumes a lot of energy and has high operating costs. This results in excessively high costs for agricultural products, and many greenhouses remain idle.

[0005] The role of the cold greenhouse is only to advance the spring and delay the autumn, and the utilization rate is not high. In the summer, the indoor temperature is high and humid, which makes it difficult for plants to adapt or grow normally. In the north, the winter is extremely cold and production is impossible.

[0006] To address the shortcomings of the three aforementioned greenhouse types, our company, after years of research and experimentation, has designed a disc-shaped, double-curved greenhouse. This uses bidirectional convection to provide ventilation and heat dissipation in summer. In winter, a heat exchanger stores heat during the day and dissipates it at night, meeting the needs of plant growth in harsh winter conditions. These two approaches ensure normal plant growth year-round, while offering extremely low production and maintenance costs. This automated greenhouse is ideal for Chinese agricultural production. Summary of the Invention

[0007] To this end, an embodiment of the present invention provides a dish-shaped double-curved greenhouse to solve the problems of low land utilization and high cost caused by greenhouse structure limitations in the prior art.

[0008] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0009] In a first aspect of the embodiments of the present invention, a dish-shaped double-curved greenhouse is provided, comprising a cushion layer, a foundation is provided on the cushion layer,

[0010] A wall foundation is provided on the foundation, and the wall foundations are arranged at intervals in a quadrilateral, a row of fixed bases is provided corresponding to the middle position of the wall foundation, a support frame is installed on the fixed base, an arch frame installed on the support frame is provided on the fixed base in the middle row, a thermal insulation structure layer is provided on the outer side of the support frame and the arch frame, the arc surface of the support frame is larger than the arc surface of the arch frame, air inlets are provided at the positions of the intervals between the fixed bases on the two long sides, and an exhaust fan is provided at the cross section of the arch frame;

[0011] The greenhouse is equipped with multiple heat exchangers on the side. The heat exchangers are water-cooled devices, including a water inlet, a drainage end, an air inlet and an exhaust end. The water inlet is connected to a water pump, the drainage end is connected to an irrigation pump, the air inlet is exposed to the inside of the greenhouse, and the exhaust end is connected to an exhaust fan.

[0012] A greenhouse door is provided on the end face of the greenhouse, a buffer zone is provided at a position corresponding to the greenhouse door, a control device is provided in the buffer zone, and an electronic temperature detector and a gas concentration detector connected to the control device are also provided inside the greenhouse.

[0013] Furthermore, the supporting frame includes columns installed on the middle row of fixed bases and arc-shaped frames installed on the fixed bases on the two long sides. The adjacent columns are fixedly connected by crossbeams. A Y-shaped connecting clip is provided on the top of the column. The main support leg of the connecting clip is fixed on the column, and the other two sides are respectively connected to the prestressed frame. The other end of the prestressed frame is connected to the arc-shaped frame. The end of the arc-shaped frame is connected to the arch frame. The bottom of the arc-shaped frame is installed on the wall foundation.

[0014] Furthermore, a cross frame is provided between the prestressed frame and the cambered frame, the cross beam is parallel to the ground, stress ribs are vertically provided between the connection point between the prestressed frame and the cambered frame and the cross frame, and a partition membrane frame is provided between the connection point between the cambered frame and the arch frame and the prestressed frame.

[0015] Furthermore, the cross frame is connected to the middle position of the prestressed frame, and the angle α between the two prestressed frames is greater than 120°.

[0016] Furthermore, the connecting clip is a butterfly-shaped metal plate, the end face of which is directly fixed on the column, the two wing plates are respectively connected to the prestressed frame, and the crossbeam is installed on the connecting clip and coincides with the connection point of the column.

[0017] Furthermore, a film receiving groove is provided at the bottom of the arc frame, and the film receiving groove is arranged on the wall base.

[0018] Furthermore, the thermal insulation structure layer includes an outer covering layer and an inner covering layer, the outer covering layer is a thin film layer, and the inner covering layer consists of three parts, namely an outer film, an insulation blanket and an inner film, and the outer covering layer and the inner covering layer are both provided with individually controlled winding machines.

[0019] Furthermore, the arc-surface frame includes an inner frame and an outer frame, an independent heat-insulating space is formed between the inner frame and the outer frame, and the prestressed frame connector is on the inner frame.

[0020] Furthermore, a transverse support frame is provided inside the arch frame, a vertical support frame is provided between the transverse support frame and the arch frame, and the vertical support frame is connected to the highest point of the arch frame.

[0021] Furthermore, the symmetrical side surfaces of the curved frame are provided with air exhaust ports, the structural surface where the separation membrane frame is located is provided with air exchange ports, and the structural surface where the prestressed frame is located is provided with ventilation ports.

[0022] According to the embodiments of the present invention, the following advantages are achieved:

[0023] 1. The dish-shaped double-curved greenhouse of the present invention uses a two-way convection method to achieve ventilation and heat dissipation in the summer. In the winter, a heat exchanger is used to store heat during the day and dissipate heat at night, meeting the needs of plant growth in the harsh winter environment. These two methods can achieve normal plant growth all year round, and the operating costs during production and maintenance are extremely low.

[0024] 2. The greenhouse uses a film to protect against wind, rain, snow and other severe weather conditions, so that the greenhouse can automatically remove snow, prevent wind and rain, increase the amount of light entering, has a long service life, low cost, is easy to install and replace, and is resistant to wind and snow disasters. It can withstand the severe weather in the north for the past 30 years.

[0025] 3. The greenhouse adopts inner covering, which consists of three parts: outer film, thermal insulation blanket and inner film. The outer film is mainly used to prevent condensation in the greenhouse. The thermal insulation blanket is hollow and thermal insulation (the best thermal insulation effect). The inner film plays the role of heat preservation and light intake under specific environment. In the northern winter with a temperature of minus 20° (the lowest temperature at night), without the need for external heating, the temperature in the greenhouse can automatically reach 8-12 degrees, which can meet the growth environment of tomatoes.

[0026] 4. The greenhouse adopts a specific structural design mode, low price, and modular assembly design. It is easy to install and replace.

[0027] 5. The greenhouse adopts a large-span design (24M wide), with a length of up to 100-150 meters (the total area of ​​the greenhouse can reach 2400-3600 square meters). It is suitable for medium-sized agricultural machinery to cultivate in the greenhouse, reducing labor costs, and can realize automated agricultural operations and remote control throughout the process (it is an automated greenhouse suitable for Chinese agricultural production).

[0028] 6. The interior of the greenhouse uses water as the medium and the heat exchange system as the energy storage method, so as to achieve the heat storage effect inside the greenhouse (about 30 cubic meters of energy storage per acre, the efficiency of heat exchange can reach 40-50%, and the water temperature can reach 25-30°). Warm water irrigation is used to increase the ground temperature, which has the purpose of heat dissipation and promoting plant growth (solving the bottleneck of low ground temperature in northern agriculture).

[0029] 7. The greenhouse adopts two-way convection ventilation for summer cooling, which enables plants to grow in a natural environment, solves the problem of high temperature in summer production, and greatly reduces costs. The energy consumption in winter is about 5-8 kilowatts per day (mainly water pumps and fans), and the energy consumption in summer is reduced by 30% compared with winter.

[0030] 8. The dish-shaped double-arc greenhouse is suitable for soil planting, hydroponics, mist cultivation and seedling production, and the greenhouse land utilization rate can reach 75-80%. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0033] Figure 1 A front view of a dish-shaped double-curved greenhouse provided by an embodiment of the present invention;

[0034] Figure 2 A cross-sectional view of a dish-shaped double-curved greenhouse provided by an embodiment of the present invention;

[0035] Figure 3 for Figure 2A-direction view;

[0036] Figure 4 This is a connection diagram of a control device and an actuator in a dish-shaped double-cambered greenhouse provided by an embodiment of the present invention.

[0037] In the figure: 1. cushion layer; 2. foundation; 3. wall foundation; 4. fixed base; 5. arch frame; 6. insulation structure layer; 7. air inlet; 8. exhaust fan; 9. heat exchanger; 10. electronic temperature detector; 11. gas concentration detector; 12. greenhouse door; 13. buffer zone; 14. control device; 15. column; 16. curved frame; 161. inner frame; 162. outer frame; 17. crossbeam; 18. connecting clip; 19. prestressed frame; 20. cross frame; 21. stress rib; 22. partition film frame; 23. winder; 24. cross support frame; 25. vertical support frame; 26. exhaust vent; 27. air exchange vent; 28. ventilation vent. DETAILED DESCRIPTION

[0038] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0039] The terms "upper", "lower", "left", "right", "middle", etc. used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be considered as the scope of the present invention as long as there is no substantial change in the technical content.

[0040] like Figures 1-4 As shown, it shows a dish-shaped double-curved greenhouse provided by an embodiment of the present invention, comprising a cushion layer 1, a foundation 2 is provided on the cushion layer 1,

[0041] A wall base 3 is set on the foundation 2, and the wall bases 3 are arranged in a quadrilateral at intervals. A row of fixed bases 4 is set in the middle position of the wall base 3, and a supporting frame is installed on the fixed base 4. An arch frame 5 installed on the supporting frame is set on the middle row of fixed bases 4. An insulation structure layer 6 is set on the outside of the supporting frame and the arch frame 5. The arc surface of the supporting frame is larger than the arc surface of the arch frame 5. An air inlet 7 is provided at the position between the fixed bases 4 on the two long sides, and an exhaust fan 8 is provided at the cross section of the arch frame 5; wherein, a horizontal support frame 24 is provided inside the arch frame 5, and a vertical support frame 25 is provided between the horizontal support frame 24 and the arch frame 5. The vertical support frame 25 is connected to the highest point of the arch frame 5 to support the arch frame 5. All frame connections are connected with connecting plate bolts. The entire greenhouse has no welding, which can improve the overall service life of the greenhouse and increase the dynamic load strength.

[0042] The greenhouse is provided with multiple heat exchangers 9 on the side. The heat exchangers 9 are water-cooled devices, including a water inlet end, a drainage end, an air inlet end and an exhaust end. The water inlet end is connected to a water pump, the drainage end is connected to an irrigation pump, the air inlet end is exposed to the inside of the greenhouse, and the exhaust end is connected to an exhaust fan 8.

[0043] A greenhouse door 12 is provided on the end face of the greenhouse, a buffer zone 13 is provided at a position corresponding to the greenhouse door 12, a control device 14 is provided in the buffer zone 13, and an electronic temperature detector 10 and a gas concentration detector 11 connected to the control device 14 are also provided inside the greenhouse.

[0044] The greenhouse environment adopts a two-way convection method to solve the function of ventilation and heat dissipation in summer. In winter, the heat exchanger 9 can store heat during the day and dissipate heat at night to meet the growth needs of plants in the harsh winter environment. The bottom air intake and high-position exhaust are used to achieve the purpose of heat dissipation through two convection cycles. This greenhouse can be reused. Due to the long service life of the greenhouse, an independent cushion layer is set at the cushion position (easy to dismantle). If the land needs to be relocated, it can be dismantled and reused. This effect reduces land pollution (because there is no construction material and no construction waste after demolition), does not affect the secondary cultivation of the land, and complies with the country's land use policy.

[0045] See again Figure 2 The supporting frame includes columns 15 installed on the middle row of fixed bases 4 and arc frames 16 installed on the two long side fixed bases 4. Adjacent columns 15 are fixedly connected by cross frames 20. A Y-shaped connecting clip 18 is provided on the top of the column 15. The main support leg of the connecting clip 18 is fixed on the column 15, and the other two sides are respectively connected to the prestressed frame 19. The other end of the prestressed frame 19 is connected to the arc frame 16. The end of the arc frame 16 is connected to the arch frame 5, and the bottom of the arc frame 16 is installed on the wall foundation 3.

[0046] The specific structure is that a cross frame 20 is set between the prestressed frame 19 and the cambered frame 16, and the cross frame 20 is parallel to the ground. A stress rib 21 vertically connected to the cross frame 20 is provided at the connection point between the prestressed frame 19 and the cambered frame 16, and a stress rib 21 connected to the prestressed frame 19 is provided at the connection point between the cambered frame 16 and the arch frame 5, and the separation membrane frame 22 intersects with the stress rib 21.

[0047] In this embodiment, the arc frame 16 includes an inner frame 161 and an outer frame 162, and an independent insulation space is formed between the inner frame 161 and the outer frame 162. The prestressed frame 19 is connected to the inner frame 161, and the space between the inner frame 161 and the outer frame 162, between the inner frame 161 and the ground, and between the arch frame 5 and the prestressed frame 19 and the partition membrane frame 22 is divided into three independent spaces.

[0048] Among them, the symmetrical side surfaces of the curved frame 16 are provided with exhaust ports 26, the structural surface where the separation membrane frame 22 is located is provided with air exchange ports 27, and the structural surface where the prestressed frame 19 is located is provided with air exchange ports 28.

[0049] For cooling in summer, the bottom air inlet 7 is used for intake and the high-position air outlet 26 is used for exhaust, i.e., the two-way convection method solves the problem of ventilation and heat dissipation in summer. For cooling in summer, the bottom air inlet 7 and the top air outlet 26 are used in conjunction.

[0050] When used in summer, the temperature in the shed increases due to the high temperature in the space between the inner frame 161 and the outer frame 162. The vent 27 can be opened for convection with the top exhaust vent. The vent 27 is a secondary cooling channel in summer.

[0051] During summer use or in the south, when the air humidity in the greenhouse is too high, the ventilation port 28 is opened for dehumidification to reduce the probability of plant diseases and insect pests, make the environment in the greenhouse more natural, and promote the healthy growth of plants.

[0052] In a further preferred embodiment, the cross frame 20 is connected to the middle position of the prestressed frame 19, and the angle α between the two prestressed frames 19 is greater than 120°.

[0053] The connecting clip 18 is a butterfly-shaped metal plate, the end face of which is directly fixed on the column 15 , the two wing plates are respectively connected to the prestressed frame 19 , and the crossbeam 17 is installed on the connecting clip 18 and coincides with the connection point of the column 15 .

[0054] A film receiving groove is provided at the bottom of the arc frame 16 , and the film receiving groove is arranged on the wall base 3 .

[0055] In the greenhouse structure of the present invention, the thermal insulation structure layer 6 includes an outer covering layer and an inner covering layer (not shown). The outer covering layer is a thin film layer, and the inner covering layer consists of three parts, namely an outer film, an insulation blanket and an inner film. Both the outer covering layer and the inner covering layer are provided with a separately controlled winding machine 23.

[0056] Among them, the outer film is mainly used to prevent condensation in the shed, the thermal insulation is hollow (the best thermal insulation effect), and the inner film plays the role of heat preservation and light entry under specific environments.

[0057] In the dished, double-curved greenhouse of the present invention, sunlight enters the greenhouse through the outer film, generating a significant amount of heat. When the temperature reaches 25-30°C, the sunlight enters the secondary heating chamber designed inside the greenhouse. When the temperature reaches 40-70°C, the sunlight enters the heat exchanger 9, where it is stored in the water and the exhaust gas is discharged outdoors. When the water temperature reaches above 28°C, the heat is dissipated through the heat dissipation system at the front, rear, and sides of the greenhouse, reaching a temperature suitable for plant growth.

[0058] The heat exchanger 9 uses water as the medium to exchange the heat in the heat storage chamber with the 40-70° hot air in the heat storage chamber by conduction, replacing the heat energy in the water, thereby achieving the effect of storing heat energy in the water.

[0059] The irrigation method is: the stored 25-30 degree hot water can be used to irrigate the plants, warm the soil, and at the same time achieve the effect of heat dissipation in the greenhouse. This system solves the bottleneck of plant growth in the northern region due to low soil temperature.

[0060] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A dish-shaped double-curved greenhouse, comprising a cushion layer, a foundation provided on the cushion layer, characterized in that: A wall foundation is provided on the foundation, and the wall foundations are arranged at intervals in a quadrilateral. A row of fixed bases are provided on the wall foundations and at the middle positions corresponding to two of the wall foundations. A supporting frame is installed on the fixed bases. An arch frame installed on the supporting frame is provided above the fixed base located in the middle position of the greenhouse. A thermal insulation structure layer is provided on the outer sides of the supporting frame and the arch frame. The arc surface of the supporting frame is larger than the arc surface of the arch frame. Air inlets are provided on the wall foundations of the two long sides of the greenhouse at positions corresponding to the intervals between the fixed bases, and an exhaust fan is provided at the cross section of the arch frame. Multiple heat exchangers are installed on the sides of the greenhouse. The heat exchangers are water-cooled devices, including a water inlet, a drainage end, an air inlet, and an exhaust end. The water inlet is connected to a water pump, the drainage end is connected to an irrigation pump, the air inlet is exposed to the inside of the greenhouse, and the exhaust end is connected to an exhaust fan. A greenhouse door is provided on the end surface of the greenhouse, a buffer zone is provided at a position corresponding to the greenhouse door, a control device is provided in the buffer zone, and an electronic temperature detector and a gas concentration detector connected to the control device are also provided inside the greenhouse; The support frame includes columns installed on the fixed base in the middle row of the greenhouse and cambered frames installed on the fixed bases on the two long sides of the greenhouse. Adjacent columns are fixedly connected by crossbeams. A Y-shaped connecting clip is provided on the top of the column. The main support leg of the connecting clip is fixed on the column, and the other two sides are respectively connected to the prestressed frame. The other end of the prestressed frame is connected to the cambered frame. The end of the cambered frame is connected to the arch frame. The bottom of the cambered frame is installed on the wall foundation. A cross frame is provided between the prestressed frame and the cambered frame, the cross beam is parallel to the ground, stress ribs are vertically provided between the connection point between the prestressed frame and the cambered frame and the cross frame, and a separation membrane frame is provided between the connection point between the cambered frame and the arch frame and the prestressed frame; The symmetrical sides of the arc frame are provided with exhaust ports, the structural surface where the separation membrane frame is located is provided with air exchange ports, and the structural surface where the prestressed frame is located is provided with ventilation ports; The thermal insulation structure layer includes an outer covering layer and an inner covering layer. The outer covering layer is a thin film layer. The inner covering layer consists of three parts, namely an outer film, a thermal insulation blanket and an inner film. The outer covering layer and the inner covering layer are each provided with a separately controlled winding machine. The arc-shaped frame includes an inner frame and an outer frame, and an independent insulation space is formed between the inner frame and the outer frame. The prestressed frame connector is divided into three independent spaces on the inner frame, between the inner frame and the outer frame, between the inner frame and the ground, and between the arch frame, the prestressed frame and the separator membrane frame.

2. The dish-shaped double-curved greenhouse according to claim 1, characterized in that: The cross frame is connected to the middle position of the prestressed frame, and the angle α between the two prestressed frames is greater than 120°.

3. The dish-shaped double-curved greenhouse according to claim 2, characterized in that: The connecting clip is a butterfly-shaped metal plate, the end face of which is directly fixed on the column, the two wing plates are respectively connected to the prestressed frame, and the crossbeam is installed on the connecting clip and coincides with the connection point of the column.

4. The dish-shaped double-curved greenhouse according to claim 3, characterized in that: A film receiving groove is provided at the bottom of the arc frame, and the film receiving groove is arranged on the wall base.

5. The dish-shaped double-curved greenhouse according to claim 1, characterized in that: A transverse support frame is provided inside the arch frame, a vertical support frame is provided between the transverse support frame and the arch frame, and the vertical support frame is connected to the highest point of the arch frame.

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