Solar greenhouse rear wall heat preservation system

Abstract

The invention discloses a solar greenhouse rear wall heat preservation system, and relates to the technical field of solar greenhouse heat preservation, the solar greenhouse rear wall heat preservation system comprises a greenhouse, a rear wall is arranged on one side of the greenhouse, the rear wall is used for supporting a greenhouse frame, a heat preservation chamber is arranged on the side, away from the greenhouse, of the rear wall, a heat preservation cavity is formed in the heat preservation chamber, the heat preservation cavity communicates with the interior of the greenhouse, and a sliding assembly is arranged in the heat preservation cavity; the bottom of the sliding assembly extends out of the heat preservation cavity, and a ventilation part is arranged at the bottom of the heat preservation chamber and communicates with the interior of the greenhouse. According to the greenhouse, hot and humid air in the greenhouse can be stored and used for increasing the temperature at night, energy is saved, it is guaranteed that the temperature in the greenhouse is constant, and growth of plants is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of solar greenhouse insulation, and in particular to a solar greenhouse rear wall insulation system. Background Art

[0002] The solar greenhouse originated in China and meets the needs of China's agricultural development. It is a pioneer in the world. The solar greenhouse is mainly composed of three parts: the enclosure wall, the rear roof and the front roof. The front roof is the entire lighting surface of the greenhouse. During the daytime, the front roof is only covered with plastic film for lighting. When the outdoor light weakens, the plastic film is covered with a movable insulation blanket in time to strengthen the insulation of the greenhouse. The rear wall of the solar greenhouse stores heat to increase the indoor temperature.

[0003] The existing rear wall has insufficient thermal insulation performance, poor energy storage effect, and cannot exchange hot air and cold air in time, which is not conducive to the growth of plants in the greenhouse.

[0004] Therefore, there is an urgent need for a solar greenhouse rear wall insulation system to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a solar greenhouse rear wall insulation system to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a solar greenhouse rear wall insulation system, including a greenhouse, a rear wall is provided on one side of the greenhouse, the rear wall is used to support the greenhouse frame, an insulation chamber is provided on the side of the rear wall away from the greenhouse, an insulation cavity is provided in the insulation chamber, the insulation cavity is connected with the interior of the greenhouse, a sliding component is provided in the insulation cavity, the bottom of the sliding component extends out of the insulation cavity, a ventilation part is provided at the bottom of the insulation chamber, and the ventilation part is connected with the interior of the greenhouse.

[0007] Preferably, a frame is provided outside the heat preservation chamber, the outer side of the frame is wrapped with heat preservation cotton, the outer side of the heat preservation cotton is wrapped with a heat preservation blanket, and the heat preservation blanket is fixedly installed on the heat preservation chamber.

[0008] Preferably, the sliding assembly includes a sliding plate slidably connected to the inner wall of the insulation chamber, a rubber pad is fixed to the edge of the sliding plate, an output end of a hydraulic cylinder is fixed to the bottom of the sliding plate, and the hydraulic cylinder is located below the insulation quilt.

[0009] Preferably, a partition is fixedly connected in the insulation chamber, and the hydraulic cylinder is fixedly connected to the top surface of the partition.

[0010] Preferably, the ventilation part includes a plurality of air outlet pipes fixedly connected and connected to the insulation chamber, a plurality of air inlet pipes are provided under the plurality of air outlet pipes, the air inlet pipes and the air outlet pipes are respectively connected to the outside world, a plurality of connecting pipes are fixedly connected and connected to a side of the insulation chamber away from the air inlet pipes, and the connecting pipes are connected to the greenhouse.

[0011] Preferably, an exhaust fan is provided at the end of the air outlet pipe, and a blower fan is provided at the end of the air inlet pipe.

[0012] Preferably, a third solenoid valve is installed in the air outlet pipe, a fourth solenoid valve is installed in the air inlet pipe, and a fifth solenoid valve is installed in the connecting pipe.

[0013] Preferably, the insulation chamber is fixedly connected with a plurality of connecting pipes, one end of the connecting pipe is connected with the greenhouse, and the other end of the connecting pipe passes through the insulation quilt and is connected with the insulation cavity.

[0014] Preferably, a second solenoid valve is installed in the connecting pipe.

[0015] Preferably, the heat preservation chamber is fixedly connected to and communicated with a plurality of exhaust pipes, a first solenoid valve is installed in the exhaust pipe, and the exhaust pipe is communicated with the outside.

[0016] The present invention discloses the following technical effects: during the day, the temperature in the greenhouse increases due to sunlight, and the hot and humid air rises and gathers above the greenhouse, and then enters the heat preservation cavity, which is used to store heat energy, and the outside air is passed into the greenhouse through the ventilation component, thereby ensuring the normal growth of plants; at night, the temperature in the greenhouse drops, and the air in the greenhouse is passed into the outside through the ventilation component, and at the same time, the heat energy stored in the heat preservation cavity is quickly passed into the greenhouse through the sliding component, thereby raising the temperature in the greenhouse. The present invention can store the hot and humid air in the greenhouse, which is used to increase the temperature at night, save energy, and ensure that the temperature in the greenhouse is constant, which is conducive to the growth of plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the insulation chamber of the present invention;

[0020] In the figure: 1. Greenhouse; 2. Back wall; 3. Insulation room; 4. Insulation blanket; 5. Insulation cotton; 6. Frame; 7. Sliding plate; 8. Insulation chamber; 9. Exhaust pipe; 10. First solenoid valve; 11. Second solenoid valve; 12. Connecting pipe; 13. Hydraulic cylinder; 14. Exhaust pipe; 15. Third solenoid valve; 16. Blower fan; 17. Fourth solenoid valve; 18. Inlet pipe; 19. Exhaust fan; 20. Partition; 21. Fifth solenoid valve; 22. Connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] As an important agricultural facility, solar greenhouse plays an important role in increasing crop yields, extending the planting season and improving crop quality. In the design and construction of solar greenhouses, the rear wall insulation system is one of the key factors to ensure the stability of the temperature inside the greenhouse. Good insulation performance can not only reduce energy consumption, but also provide a suitable growth environment for crops.

[0024] The feasible methods found in this field - traditional brick-concrete structure rear wall: The traditional brick-concrete structure rear wall is the earliest form used in solar greenhouses. This structure is usually built with red bricks or hollow bricks, and coated with a layer of insulation material on the outer surface, such as polystyrene foam board (EPS) or extruded polystyrene foam board (XPS). The advantages of the brick-concrete structure rear wall are low cost and simple construction, but the thermal insulation performance is relatively poor, especially in extreme climatic conditions. Advantages: low cost and simple construction; Disadvantages: limited thermal insulation performance and heavy weight.

[0025] Possible methods discovered in the art - polystyrene foam board (EPS) insulation back wall: polystyrene foam board (EPS) is a lightweight and efficient insulation material, which is widely used in the back wall insulation system of solar greenhouse. EPS board has excellent thermal insulation performance and can effectively prevent the transfer of heat. In addition, EPS board also has good waterproof and corrosion resistance, suitable for various environmental conditions. In order to further improve the insulation effect, EPS board is usually used in combination with other materials (such as cement mortar). Advantages: good thermal insulation performance, light weight, easy construction; Disadvantages: low mechanical strength and flammable.

[0026] An implementable method that has been discovered in the art - extruded polystyrene foam board (XPS) insulation back wall: Extruded polystyrene foam board (XPS) is similar to EPS and is also a commonly used insulation material. XPS board has higher density and compression strength, making it superior to EPS board in mechanical properties. In addition, XPS board also has better waterproof performance and is suitable for use in humid environments. XPS board is usually used in combination with concrete or other structural materials to improve overall stability. Advantages: good thermal insulation performance, high mechanical strength, excellent waterproof performance; Disadvantages: higher cost and slightly higher construction complexity.

[0027] An implementable method that has been discovered in this field - rock wool insulation back wall: Rock wool is a natural mineral fiber material with excellent thermal insulation and fire resistance. Rock wool boards are often used in the back wall insulation system of solar greenhouses that require a higher fire resistance level. Rock wool boards can not only effectively prevent the transfer of heat, but also absorb some noise and provide a quieter growing environment. However, the construction of rock wool boards is relatively complicated, and certain protective measures need to be taken to prevent the impact of fibers on the human body. Advantages: good thermal insulation, excellent fire resistance, and good sound absorption; Disadvantages: complex construction and high cost.

[0028] An implementable method that has been discovered in this field - composite insulation back wall: composite insulation back wall refers to a back wall insulation system that combines multiple insulation materials. Common combinations include the combination of EPS / XPS board and concrete, the combination of rock wool board and metal frame, etc. The composite insulation back wall can give full play to the advantages of various materials and improve the overall insulation performance and structural stability. In addition, the composite insulation back wall can also be customized according to specific needs to meet the climatic conditions of different regions. Advantages: superior comprehensive performance and wide range of applications; Disadvantages: high design complexity and increased cost.

[0029] At present, some high-performance insulation materials such as aerogel and phase change materials have been gradually applied to practical projects. These new materials not only have higher insulation performance, but also have lighter weight and better environmental protection characteristics. Aerogel: Aerogel is an ultra-light and efficient insulation material with extremely low thermal conductivity. It can be used not only for wall insulation, but also for roofs and floors. Phase change material: Phase change material can absorb and release a large amount of heat within a specific temperature range, thereby achieving indoor temperature regulation. Embedding it in the wall insulation layer can store solar energy during the day and release heat at night to achieve energy saving.

[0030] The intelligent monitoring and control system realizes real-time monitoring of the rear wall insulation system by integrating advanced technologies such as sensors and the Internet of Things. The intelligent control system can automatically adjust the thickness of the insulation layer or turn on / off the auxiliary heating equipment according to the temperature difference between indoor and outdoor, thereby maintaining the stability of the temperature inside the greenhouse. In addition, the intelligent system can also collect a large amount of data to provide support for optimizing greenhouse management.

[0031] The green ecological concept encourages the use of environmentally friendly materials to make the back wall insulation system, and combines vegetation restoration projects to promote natural landscape restoration. For example, the use of recycled fiberboard made from waste plastic bottles as insulation materials not only reduces waste emissions, but also achieves resource recycling. At the same time, the green ecological concept also includes planting green belts around the greenhouse to form a natural barrier to further improve the insulation effect.

[0032] For example, a large vegetable production base in the north uses a composite insulation back wall system combining EPS board and concrete. EPS board provides good insulation performance, while concrete enhances the stability of the structure. Through this design, the base successfully increased the average temperature in the greenhouse in winter by more than 5°C, significantly improving the yield and quality of crops. A flower plantation in the south The plantation is located in the humid and rainy southern region and uses rock wool board as the back wall insulation material. Rock wool board not only has excellent insulation performance, but also has good moisture absorption and fire resistance, which is very suitable for local climatic conditions. The renovated greenhouse not only increases the growth rate of flowers, but also reduces the incidence of diseases and pests. A desert edge agricultural demonstration project in the northwest The project is located in the arid and rainless northwest region and uses aerogel as the back wall insulation material. Aerogel has extremely low thermal conductivity and extremely high thermal insulation performance, and can keep the temperature inside the greenhouse stable under extremely high temperature environments. Through this innovative design, the project successfully established a number of energy-efficient solar greenhouses on the edge of the desert, providing a new source of income for local farmers.

[0033] The back wall insulation system of the solar greenhouse plays an important role in improving the temperature stability inside the greenhouse, saving energy and improving the crop growth environment. The existing insulation systems mainly include traditional brick-concrete structures, polystyrene foam boards (EPS), extruded polystyrene foam boards (XPS), rock wool insulation back walls and composite insulation back walls. Each type of insulation system has its own unique advantages and disadvantages, and the most suitable solution should be selected according to specific climatic conditions and economic budgets. In the future, with the research and development of new insulation materials, the application of intelligent monitoring and control technology, and the promotion of green ecological concepts, the back wall insulation system of the solar greenhouse will become more efficient and reliable. However, in the specific implementation process, it is necessary to fully consider the local actual situation and choose the most suitable technical solution to truly play its due role. Through continuous technological innovation and optimized design, we have reason to believe that the future solar greenhouse will bring greater economic and social benefits to agricultural production.

[0034] Reference Figure 1-Figure 2 As shown, the present embodiment provides a rear wall insulation system for a solar greenhouse, including a greenhouse 1, a rear wall 2 is provided on one side of the greenhouse 1, the rear wall 2 is used to support the frame of the greenhouse 1, an insulation chamber 3 is provided on the side of the rear wall 2 away from the greenhouse 1, an insulation cavity 8 is provided in the insulation chamber 3, the insulation cavity 8 is connected with the interior of the greenhouse 1, a sliding component is provided in the insulation cavity 8, the bottom of the sliding component extends out of the insulation cavity 8, a ventilation part is provided at the bottom of the insulation chamber 3, and the ventilation part is connected with the interior of the greenhouse 1.

[0035] During the day, the temperature in the greenhouse 1 rises due to sunlight, and the hot and humid air rises and gathers above the greenhouse 1, and then enters the heat preservation chamber 8, which is used to store heat energy, and the outside air is passed into the greenhouse 1 through the ventilation component, thereby ensuring the normal growth of plants; at night, the temperature in the greenhouse 1 drops, and the air in the greenhouse 1 is passed into the outside through the ventilation component, and at the same time, the heat energy stored in the heat preservation chamber 8 is quickly passed into the greenhouse 1 through the sliding component, thereby raising the temperature in the greenhouse 1. The present invention can store the hot and humid air in the greenhouse 1, which is used to increase the temperature at night, save energy, and ensure that the temperature in the greenhouse 1 is constant, which is conducive to the growth of plants.

[0036] In a further optimized solution, a frame 6 is provided outside the heat preservation chamber 8, the outer side of the frame 6 is wrapped with heat preservation cotton 5, the outer side of the heat preservation cotton 5 is wrapped with heat preservation quilt 4, and the heat preservation quilt 4 is fixedly installed on the heat preservation chamber 3. The frame 6 plays a supporting role, and the heat preservation cotton 5 and the heat preservation quilt 4 wrap the frame 6 in turn, which plays a good heat preservation role.

[0037] Further optimized solution, the sliding assembly includes a sliding plate 7 slidably connected to the inner wall of the heat preservation chamber 8, a rubber pad is fixed at the edge of the sliding plate 7, and the output end of the hydraulic cylinder 13 is fixed at the bottom of the sliding plate 7, and the hydraulic cylinder 13 is located below the heat preservation quilt 4. The reciprocating expansion and contraction of the hydraulic cylinder 13 drives the sliding plate 7 to move back and forth in the heat preservation chamber 8, and then the hot and humid air in the heat preservation chamber 8 is passed into the greenhouse 1, thereby increasing the night temperature in the greenhouse 1.

[0038] Further optimizing the scheme, a partition 20 is fixedly connected in the insulation chamber 3, and the hydraulic cylinder 13 is fixedly connected to the top surface of the partition 20. The partition 20 is used to support the hydraulic cylinder 13 and play an isolation role to facilitate the ventilation work of the ventilation part.

[0039] Further optimizing the scheme, the ventilation part includes a plurality of outlet pipes 14 fixedly connected and connected to the heat preservation chamber 3, a plurality of inlet pipes 18 are provided under the plurality of outlet pipes 14, the inlet pipes 18 and the outlet pipes 14 are respectively connected to the outside, and a plurality of connecting pipes 22 are fixedly connected and connected to the side of the heat preservation chamber 3 away from the inlet pipes 18, and the connecting pipes 22 are connected to the greenhouse 1. During the day, the outside air enters the greenhouse 1 through the inlet pipes 18 and the connecting pipes 22, and at night, the gas in the greenhouse 1 is discharged through the connecting pipes 22 and the outlet pipes 14, so that the hot and humid air can enter the greenhouse 1.

[0040] To further optimize the solution, an exhaust fan 19 is provided at the end of the air outlet pipe 14, and a blower fan 16 is provided at the end of the air inlet pipe 18. The exhaust fan 19 is provided to facilitate the exhaust of gas in the greenhouse 1, and the blower fan 16 is provided to facilitate the entry of outside air into the greenhouse 1, while squeezing the hot and humid air in the greenhouse 1 into the heat preservation chamber 8, accelerating the air flow and improving the ventilation efficiency.

[0041] Further optimization scheme, a third solenoid valve 15 is installed in the air outlet pipe 14, a fourth solenoid valve 17 is installed in the air inlet pipe 18, and a fifth solenoid valve 21 is installed in the connecting pipe 22. When ventilation is not required, the third solenoid valve 15, the fourth solenoid valve 17 and the fifth solenoid valve 21 are all closed, when the outside air enters the greenhouse 1, the fourth solenoid valve 17 and the fifth solenoid valve 21 are opened, and the third solenoid valve 15 is closed; when the gas in the greenhouse 1 is passed to the outside, the third solenoid valve 15 and the fifth solenoid valve 21 are opened, and the fourth solenoid valve 17 is closed.

[0042] In a further optimized solution, the insulation chamber 3 is fixedly connected with a plurality of connecting pipes 12, one end of the connecting pipe 12 is connected to the greenhouse 1, and the other end of the connecting pipe 12 passes through the insulation blanket 4 and is connected to the insulation chamber 8. The connecting pipe 12 is provided for the insulation chamber 8 to store gas or pass hot air into the greenhouse 1, which is convenient for gas exchange.

[0043] In a further optimized solution, a second solenoid valve 11 is installed in the connecting pipe 12. The second solenoid valve 11 is used to control the opening or closing of the connecting pipe 12.

[0044] In a further optimized solution, the heat preservation chamber 8 is fixedly connected to and communicated with a plurality of exhaust pipes 9, a first solenoid valve 10 is installed in the exhaust pipe 9, and the exhaust pipe 9 is communicated with the outside. Excess gas is discharged through the exhaust pipe 9, and after the excess gas is discharged, the first solenoid valve 10 is closed.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A solar greenhouse rear wall insulation system, characterized by: The invention comprises a greenhouse (1), wherein a rear wall (2) is provided on one side of the greenhouse (1), wherein the rear wall (2) is used to support the frame of the greenhouse (1), wherein a heat preservation chamber (3) is provided on the side of the rear wall (2) away from the greenhouse (1), wherein a heat preservation chamber (8) is provided in the heat preservation chamber (3), wherein the heat preservation chamber (8) is communicated with the interior of the greenhouse (1), wherein a sliding component is provided in the heat preservation chamber (8), wherein the bottom of the sliding component extends out of the heat preservation chamber (8), wherein a ventilation part is provided at the bottom of the heat preservation chamber (3), wherein the ventilation part is communicated with the interior of the greenhouse (1).

2. The solar greenhouse rear wall insulation system according to claim 1, characterized in that: The heat preservation chamber (8) is provided with a frame (6) outside, the frame (6) is wrapped with heat preservation cotton (5) outside, the heat preservation cotton (5) is wrapped with a heat preservation quilt (4) outside, and the heat preservation quilt (4) is fixedly installed on the heat preservation chamber (3).

3. The solar greenhouse rear wall insulation system according to claim 2, characterized in that: The sliding assembly comprises a sliding plate (7) slidably connected to the inner wall of the heat preservation chamber (8), a rubber pad is fixedly connected to the edge of the sliding plate (7), and the output end of a hydraulic cylinder (13) is fixedly connected to the bottom of the sliding plate (7), and the hydraulic cylinder (13) is located below the heat preservation quilt (4).

4. The solar greenhouse rear wall insulation system according to claim 3, characterized in that: A partition plate (20) is fixedly connected in the insulation chamber (3), and the hydraulic cylinder (13) is fixedly connected to the top surface of the partition plate (20).

5. The solar greenhouse rear wall insulation system according to claim 1, characterized in that: The ventilation section comprises a plurality of air outlet pipes (14) fixedly connected to and in communication with the heat preservation chamber (3); a plurality of air inlet pipes (18) are provided below the plurality of air outlet pipes (14); the air inlet pipes (18) and the air outlet pipes (14) are respectively in communication with the outside; a plurality of connecting pipes (22) are fixedly connected to and in communication with a side of the heat preservation chamber (3) away from the air inlet pipes (18); the connecting pipes (22) are in communication with the greenhouse (1).

6. The solar greenhouse rear wall insulation system according to claim 5, characterized in that: An exhaust fan (19) is provided at the end of the air outlet pipe (14), and a blower fan (16) is provided at the end of the air inlet pipe (18).

7. The solar greenhouse rear wall insulation system according to claim 5, characterized in that: A third solenoid valve (15) is installed in the air outlet pipe (14), a fourth solenoid valve (17) is installed in the air inlet pipe (18), and a fifth solenoid valve (21) is installed in the connecting pipe (22).

8. The solar greenhouse rear wall insulation system according to claim 2, characterized in that: The insulation chamber (3) is fixedly connected to a plurality of connecting pipes (12), one end of the connecting pipe (12) is connected to the greenhouse (1), and the other end of the connecting pipe (12) passes through the insulation quilt (4) and is connected to the insulation chamber (8).

9. The solar greenhouse rear wall insulation system according to claim 8, characterized in that: A second solenoid valve (11) is installed in the connecting pipe (12).

10. The solar greenhouse rear wall insulation system according to claim 1, characterized in that: The heat preservation chamber (8) is fixedly connected to and communicated with a plurality of exhaust pipes (9), a first solenoid valve (10) is installed in the exhaust pipe (9), and the exhaust pipe (9) is communicated with the outside.

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