A self-sufficient greenhouse with solar cross-season heating

Abstract

The invention relates to the technical field of solar heating, and provides a self-sufficient greenhouse for solar cross-season heating, comprising a heating system, a circulating heating system and a connecting assembly, wherein the heating system is sealed and connected to the circulating heating system via the connecting assembly; the heating system comprises light steel keel columns, light steel keel arc-shaped sheds, three-slot aluminum profiles and solar heating tubes, and the circulating heating system comprises an upper circulating pipe, a water storage tank, a circulating pump and a lower circulating pipe; the self-sufficient shed described in the invention is both a greenhouse shed and a solar collector, has a light and simple structure, is easy to install and maintain, has an economical use cost, and has excellent resistance to low temperatures and strong winds.

Description

Technical Field

[0001] The present invention relates to the technical field of solar heating, and in particular to a self-sufficient greenhouse for solar cross-season heating. Background Art

[0002] As winter arrives in northern China, known for its distinct seasons, various breeding and planting industries shift to greenhouse operations as the cooler temperatures cool. As we all know, the greenhouse effect of greenhouses is essential for ensuring yield and quality. Faced with the reality of shorter days and longer nights, and the significant temperature difference between day and night, ensuring sufficient heating in greenhouses is crucial for maintaining this greenhouse effect. Currently, a wide variety of greenhouse heating technologies exist, each with its own advantages and disadvantages. Traditional heating methods include coal-fired heating, oil-fired boilers, and gas-fired boilers. However, as China's mandate for low-carbon and environmentally friendly practices grows, these traditional heating methods are gradually being phased out due to insufficient energy consumption and emissions reductions. At the same time, with the rapid rise of environmental protection technology industries, solar energy, as a clean and sustainable energy source, is increasingly being used in the construction of greenhouse heating facilities. The solar heating methods that people are generally familiar with are vacuum tube solar water heaters and flat-plate solar water heaters. Vacuum tube solar water heaters have the most guaranteed heating effect and the highest solar energy conversion rate. They are widely used in the field of household water heaters. However, if vacuum tube solar water heaters are used in greenhouse heating, they cannot be adopted on a large scale because the vacuum tubes are prone to bursting and have low durability. Relatively speaking, flat-plate solar water heaters are more realistic as greenhouse heating facilities.

[0003] Chinese utility model patent CN210076138U discloses a greenhouse solar panel heat collection and heating device for use in high-altitude cold areas, including a heat collection system and a heating system. The heat collection system includes a solar panel, a first water tank, a first water pump, and a first circulating heating pipe for connecting the first water tank and the first water pump, and the outer wall of the first water tank is provided with an insulation layer; the heating system includes a heat dissipation device, a second water pump, and a second heating pipe; the heat dissipation device adopts a heat dissipation air conditioner, and the insulation layer adopts a rubber-plastic sponge; the utility model is used to solve the problem that the temperature absorbed by the existing solar greenhouse cannot be centrally supplied to the vegetables in the solar greenhouse, and the indoor temperature in the greenhouse is too low during the winter, but it also has many defects: first, the single structure is complex, and the greenhouse frame is not easy to install. The bearing capacity requirements are high. The weight of the greenhouse scaffolding plus the weight of the heat collection and heating system will inevitably put higher requirements on the construction of the scaffolding infrastructure. The unit cost will inevitably remain high, which is undoubtedly unbearable for the large-scale, low-profit greenhouse planting and breeding industry; secondly, in order to prevent abnormally low temperatures from damaging the heating pipes that may be damaged, the flat-plate collectors often need to be injected with antifreeze with a relatively small expansion coefficient, which will reduce the thermal efficiency of the warm water and the effectiveness of the heating system. In addition, the antifreeze is easy to evaporate and needs to be replenished frequently. The maintenance cost cannot be ignored. The main component of the evaporated antifreeze is ethylene glycol, which will also have an impact on the environment; thirdly, air resistance is easily generated in the stacked pipes, resulting in poor circulation heating and even system shutdown. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a self-sufficient greenhouse with solar cross-season heating, the self-sufficient greenhouse comprising a heating system, a circulating heating system and a connecting assembly, wherein the heating system is sealedly connected to the circulating heating system via the connecting assembly, wherein the connecting assembly comprises a right-angle connector, a self-tapping screw and a connecting pipe; the heating system comprises a light steel keel column, a light steel keel curved trellis, a three-slot aluminum profile and a solar heating tube, a plurality of light steel keel columns are evenly erected side by side, one end of which is vertically fixed deep into the ground, and the other end is fixedly connected to one end of a plurality of light steel keel curved trellises via a right-angle connector and a self-tapping screw, the other end of the plurality of light steel keel curved trellises is fixed deep into the ground, and the plurality of light steel keel curved trellises are evenly erected side by side, A plurality of three-slot aluminum profiles are horizontally crossed and fixed to a plurality of light steel keel arc scaffolds through right-angle connectors and self-tapping screws, and the solar heating tubes are fixed on the three-slot aluminum profiles; the circulating heating system includes an upper circulating pipe, a water tank, a circulating pump and a lower circulating pipe, the water tank is located under the ground, one end of the upper circulating pipe is connected to the water tank, and the other end extends upward along the light steel keel column on the left, and is connected to the left end of the solar heating tube through a connecting pipe along the light steel keel arc scaffold on the left, one end of the lower circulating pipe is connected to the water tank, and the other end extends upward along the light steel keel column on the right, and is connected to the right end of the solar heating tube through a connecting pipe along the light steel keel arc scaffold on the right, and is arranged at the connection port of the lower circulating pipe near the water tank.

[0005] Furthermore, the cross section of the light steel keel arc scaffold is I-shaped, and a plurality of slots corresponding to the cross section shape of the three-slot aluminum profile are evenly distributed on the waist.

[0006] Furthermore, after the three-slot aluminum profile passes through the slot holes of the light steel keel curved scaffolding, it is fixed to the horizontal cross of multiple light steel keel curved scaffoldings through right-angle connectors and self-tapping screws.

[0007] Furthermore, the three-groove aluminum profile is symmetrically provided with two concave grooves, and the surface of the concave grooves is coated with a heat-absorbing coating.

[0008] Furthermore, the solar heating tube is a stainless steel corrugated tube with a heat-absorbing coating coated on the outer surface, and is fixed in a concave groove.

[0009] Furthermore, an exhaust valve is provided at the highest point of the lower circulation pipe.

[0010] Furthermore, a drain valve is provided at the lowest point of the upper circulation pipe.

[0011] Furthermore, the outer surface of the water tank is provided with a polyurethane insulation layer.

[0012] Furthermore, an electric heater is provided between the circulation pump and the water tank.

[0013] Compared with the prior art, the self-supporting scaffolding of the present invention has the following outstanding beneficial effects:

[0014] 1. The self-sufficient trellis of the present invention adopts a structural design of a light steel keel curved trellis cross-connected with a three-slot aluminum profile, realizing the organic combination of a greenhouse trellis and a heating facility. This composite trellis is both a greenhouse trellis and a solar collector, with a simple structure and powerful functions. It can provide heating without the need for additional solar heating facilities outside the trellis, which greatly reduces the load on the trellis, greatly enhances the ability to resist strong winds, low temperatures and vibrations, and significantly increases the safety factor. At the same time, stable operation and simple operation significantly reduce operating costs.

[0015] 2. The self-sufficient scaffolding of the present invention allows the density of the scaffolding structure to be selected according to the regional and seasonal characteristics, so as to achieve the best combination of the dual needs of ventilation and dehumidification and heating supply; the number of solar collectors can also be flexibly selected by increasing or decreasing the number of solar heating tubes according to the heating demand to achieve efficient use of costs. Moreover, the solar heating tubes are easy to install and disassemble, truly achieving the goals of low maintenance and high energy efficiency.

[0016] 3. The self-sufficient scaffolding of the present invention can realize a large cross-season heating cycle of storing energy for heating in summer and consuming energy for heating in winter through a water storage tank with a heat-insulating effect. The capacity of the water storage tank can be selectively determined based on actual conditions, which not only saves costs but also leaves room for development in increasing production and expanding capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front structure of the self-sufficient greenhouse described in the present invention.

[0018] Figure 2 for Figure 1 A-direction view.

[0019] Figure 3 for Figure 2 A partial enlarged view of point B in the middle.

[0020] Figure 4 This is a three-dimensional structural diagram of the three-slot aluminum profile of the self-sufficient greenhouse described in the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the right-angle connector of the self-sufficient greenhouse described in the present invention.

[0022] As shown in the figure: 1-Heating system, 1.1-Light steel keel column, 1.2-Light steel keel curved trellis, 1.3-Three-slot aluminum profile, 1.4-Solar heating tube, 2-Circulating heating system, 2.1-Upper circulating pipe, 2.2-Water storage tank, 2.3-Circulating pump, 2.4-Lower circulating pipe, 2.5-Drain valve, 2.6-Exhaust valve, 2.7-Electric heater, 3-Connection assembly, 3.1-Right-angle connector, 3.2-Self-tapping screw, 3.3-Connecting pipe. DETAILED DESCRIPTION

[0023] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-2 As shown, a self-sufficient greenhouse with solar cross-season heating, the self-sufficient greenhouse includes a heating system 1, a circulating heating system 2 and a connecting component 3. The heating system 1 is sealed with the circulating heating system 2 through the connecting component 3, wherein the connecting component 3 includes a right-angle connector 3.1, a self-tapping screw 3.2 and a connecting pipe 3.3; the heating system 1 includes a light steel keel column 1.1, a light steel keel curved trellis 1.2, a three-slot aluminum profile 1.3 and a solar heating tube 1.4. A plurality of light steel keel columns 1.1 are evenly erected side by side, one end of which is deeply fixed in the ground, and the other end is connected by a right-angle connector 3.1 and a self-tapping screw. 3.2 is fixedly connected to one end of the multiple light steel keel curved scaffolding 1.2, and the other end of the multiple light steel keel curved scaffolding 1.2 is deeply fixed to the ground. The multiple light steel keel curved scaffolding 1.2 is evenly erected side by side. Multiple three-slot aluminum profiles 1.3 are connected and fixed to the multiple light steel keel curved scaffolding 1.2 in a horizontal cross-connection manner through right-angle connectors 3.1 and self-tapping screws 3.2. The solar heating tube 1.4 is fixed to the three-slot aluminum profile 1.3; the circulating heating system 2 includes an upper circulating pipe 2.1, a water tank 2.2, a circulating pump 2.3 and a lower circulating pipe 2.4. The water tank 2.2 is located below the ground. The upper circulating pipe 2.1 One end of the lower circulation pipe 2.4 is connected to the water tank 2.2, and the other end extends upward along the left light steel keel column 1.1, and is connected to the left end of the solar heating tube 1.4 through the connecting pipe 3.3 along the left light steel keel curved scaffolding 1.2. One end of the lower circulation pipe 2.4 is connected to the water tank 2.2, and the other end extends upward along the right light steel keel column 1.1, and is connected to the right end of the solar heating tube 1.4 through the connecting pipe 3.3 along the right light steel keel curved scaffolding 1.2. The circulation pump 2.3 is arranged at the connection port of the lower circulation pipe 2.4 near the water tank 2.1.

[0025] Further, such as Figure 3 As shown, the cross section of the light steel keel arc scaffold 1.2 is I-shaped, and a plurality of slots corresponding to the cross section shape of the three-slot aluminum profile 1.3 are evenly distributed on the waist.

[0026] Furthermore, after the three-slot aluminum profile 1.3 passes through the slot holes of the light steel keel curved scaffolding 1.2, it is horizontally cross-connected and fixed to multiple light steel keel curved scaffoldings 1.2 through right-angle connectors 3.1 and self-tapping screws 3.2.

[0027] Further, such as Figure 4 As shown, the three-groove aluminum profile 1.3 is symmetrically provided with two concave grooves, and the surface of the concave grooves is coated with a heat-absorbing coating.

[0028] Furthermore, the solar heating tube 1.4 is a stainless steel corrugated tube with a heat-absorbing coating on the outer surface, and is fixed in a concave groove.

[0029] Furthermore, a drain valve 2.5 is provided at the lowest point of the upper circulation pipe 2.1.

[0030] Furthermore, an exhaust valve 2.6 is provided at the highest point of the lower circulation pipe 2.4.

[0031] Furthermore, the outer surface of the water storage tank 2.2 is provided with a polyurethane insulation layer.

[0032] Furthermore, an electric heater 2.7 is provided between the circulation pump 2.3 and the water storage tank 2.2.

[0033] The present invention is not limited to the above-mentioned embodiments. Any modification, improvement, or substitution that can be conceived by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A self-sufficient greenhouse with solar cross-season heating, characterized in that: The self-sufficient greenhouse includes a heating system, a circulating heating system and a connecting component. The heating system is sealed and connected to the circulating heating system through the connecting component, wherein the connecting component includes a right-angle connector, a self-tapping screw and a connecting pipe; the heating system includes a light steel keel column, a light steel keel arc scaffolding, a three-slot aluminum profile and a solar heating tube. A plurality of light steel keel columns are evenly erected side by side, one end of which is deeply fixed in the ground, and the other end is fixedly connected to one end of a plurality of light steel keel arc scaffoldings through a right-angle connector and a self-tapping screw. The other end of the plurality of light steel keel arc scaffoldings is deeply fixed in the ground. A plurality of light steel keel arc scaffoldings are evenly erected side by side, and a plurality of three-slot aluminum profiles are connected through a right-angle connector and a self-tapping screw. The screws are connected and fixed with multiple light steel keel arc scaffolds horizontally and crosswise, and the solar heating tube is fixed on the three-slot aluminum profile; the circulation heating system includes an upper circulation tube, a water storage tank, a circulation pump and a lower circulation tube, the water storage tank is located under the ground, one end of the upper circulation tube is connected with the water storage tank, and the other end extends upward along the light steel keel column on the left, and is connected to the left end of the solar heating tube through a connecting pipe along the light steel keel arc scaffold on the left, one end of the lower circulation tube is connected with the water storage tank, and the other end extends upward along the light steel keel column on the right, and is connected to the right end of the solar heating tube through a connecting pipe along the light steel keel arc scaffold on the right, and the circulation pump is arranged at the connection port of the lower circulation tube close to the water storage tank; The cross section of the light steel keel arc-shaped scaffold is I-shaped, and a plurality of slots corresponding to the cross section shape of the three-slot aluminum profile are evenly distributed on the waist; After the three-slot aluminum profile passes through the slot holes of the light steel keel arc scaffold, it is connected and fixed to a plurality of light steel keel arc scaffolds in a horizontal cross pattern through right-angle connectors and self-tapping screws.

2. A self-sufficient greenhouse with solar cross-season heating according to claim 1, characterized in that: The three-groove aluminum profile is symmetrically provided with two concave grooves, and the surfaces of the concave grooves are coated with a heat-absorbing coating.

3. A self-sufficient greenhouse with solar cross-season heating according to claim 2, characterized in that: A solar heating tube is arranged in the concave groove.

4. A self-sufficient greenhouse with solar cross-season heating according to claim 3, characterized in that: The solar heating tube is a stainless steel corrugated tube with a heat-absorbing coating coated on the outer surface.

5. A self-sufficient greenhouse with solar cross-season heating according to claim 1, characterized in that: An exhaust valve is arranged at the highest point of the lower circulation pipe.

6. A self-sufficient greenhouse with solar cross-season heating according to claim 1, characterized in that: A drain valve is arranged at the lowest point of the upper circulation pipe.

7. A self-sufficient greenhouse with solar cross-season heating according to claim 1, characterized in that: The outer surface of the water storage tank is provided with a polyurethane insulation layer.

8. A self-sufficient greenhouse with solar cross-season heating according to claim 1, characterized in that: An electric heater is arranged between the circulation pump and the water storage tank.

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