A solar thermal system suitable for urban and rural construction

Abstract

This invention discloses a solar thermal collector system adapted for urban and rural construction, belonging to the field of solar thermal collector technology. The solar thermal collector system, adapted for urban and rural construction, includes a support frame and further includes: a collector unit, movably mounted on the support frame, comprising collector tubes and interconnected water tank and base tank; a descaling unit, comprising a first descaling component within the collector tubes, a second descaling component within the water tank and base tank, and a drive component for driving the second descaling component; and a flushing component, disposed in the water tank and base tank and working in conjunction with the descaling unit. This invention achieves highly efficient in-situ cleaning of scale on the inner and outer walls of the solar thermal collector system through the dual action of mechanical linkage (scraping) and dynamic displacement (reciprocating motion and rotation), combined with chemical descaling. This solves the problems of low efficiency and equipment damage associated with traditional disassembly-based cleaning methods, significantly improving system thermal efficiency and service life, and ensuring the thermal performance of the solar thermal collector system.

Description

Technical Field

[0001] This invention relates to the field of solar thermal collection technology, and in particular to a solar thermal collection system suitable for urban and rural construction. Background Technology

[0002] With the rapid development of modern society and economy, human demand for energy is increasing. However, the reserves of traditional energy sources such as coal, oil, and natural gas are constantly decreasing and becoming increasingly scarce, leading to continuous price increases. At the same time, the environmental pollution caused by conventional fossil fuels is becoming increasingly serious, all of which greatly restrict social development and the improvement of human quality of life. Energy issues have become one of the most prominent problems in the contemporary world. Therefore, the search for new energy sources, especially pollution-free clean energy, has become a hot research topic.

[0003] Solar thermal collection systems are applied to solar water heaters, which consist of collectors, insulated water tanks, and related accessories. Solar water heaters represent the first commercially viable renewable energy sector in my country, and they are also the most mature product in the Chinese solar energy industry. With the development of urban and rural construction, the implementation of policies such as "solar energy in rural areas" and "energy-saving and people-benefiting projects," and the need for building energy conservation, the solar thermal utilization industry has generally developed steadily, with the rural solar energy market becoming the primary target for most companies.

[0004] After a period of use, scale will form inside the water tank and on the inner wall of the collector tubes of a solar water heater. Scale has poor heat conduction, reducing the amount of heat absorbed by the water. Scale also acts as a thermal barrier, making it difficult for the water to absorb enough heat and for the water temperature to rise. At the same time, the scale on the inner wall of the tubes reduces the water circulation speed to some extent, resulting in insufficient heat inside the collector tubes and slow water heating. Therefore, it is necessary to clean the scale on the collector tubes and the inner wall of the water tank. The current cleaning method usually involves removing the collector tubes and washing them with a high-pressure water gun. This operation is cumbersome and the collector tubes are easily broken and damaged during disassembly, affecting their normal use. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and to propose a solar thermal collection system that is suitable for urban and rural construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A solar thermal collector system adapted for urban and rural construction includes a support frame and also includes:

[0008] The heat collection unit is movably mounted on the support and includes heat collection pipes and interconnected water tank and bottom tank;

[0009] The descaling unit includes a first descaling component inside the heat collection tube, a second descaling component inside the water tank and the bottom box, and a drive component for driving the second descaling component;

[0010] The flushing assembly is located in the water tank and bottom tank and works in conjunction with the descaling unit;

[0011] The first descaling component and the second descaling component are connected by a linkage structure.

[0012] Preferably, the first descaling component includes:

[0013] The rotating rod is rotatably connected between the water tank and the bottom tank;

[0014] Several first connecting rods are equidistantly distributed along the axis of the rotating rod;

[0015] The first scraper is connected to the end of each first connecting rod and contacts the inner wall of the heat collection tube.

[0016] Preferably, the second descaling component includes:

[0017] The rotating shaft is rotatably mounted inside the water tank or bottom tank;

[0018] Several second connecting rods are equidistantly distributed along the rotation axis;

[0019] Several second scrapers are connected to the ends of each second connecting rod and contact the inner wall of the water tank or bottom tank.

[0020] Preferably, both the water tank and the bottom tank are circular.

[0021] One of the second descaling components located inside the water tank has its rotation axis aligned with the central axis of the water tank, while the other second descaling component located inside the bottom tank has its rotation axis aligned with the central axis of the bottom tank.

[0022] Preferred options also include:

[0023] A torsion spring is disposed inside the rotating shaft and sleeved on the outside of the second connecting rod;

[0024] The second scraper elastically abuts against the outer wall of the rotating rod.

[0025] Preferably, the linkage structure includes:

[0026] A protective shell is installed between the rotating rod and the rotating shaft;

[0027] The worm gear is rotatably connected inside the protective housing and to the rotating shaft.

[0028] The worm gear is mounted on the rotating rod and meshes with the worm.

[0029] Preferably, the driving component includes:

[0030] The drive motor is fixed to the bracket;

[0031] Two flexible telescopic rods are provided and are placed at both ends of the bracket, one of which connects the output shaft of the drive motor to the rotating shaft inside the base box;

[0032] Top rod, fixed to the outside of the elastic telescopic rod;

[0033] The force-bearing block is located at the end of the bottom box and abuts against the top rod, with its contact surface being an inclined extrusion surface.

[0034] Preferably, a connecting plate is provided between the bottom tank and the water tank, and a guide rod that is slidably connected to the support is provided at the end of the water tank.

[0035] Preferred options also include:

[0036] The outer casing is fixed to the outside of the base box;

[0037] The movable gear is rotatably connected inside the outer casing and connected to the heat collection tube;

[0038] The rack plate is slidably connected to the housing and meshes with the movable gear, and its end is fixed to the bracket by a connecting rod;

[0039] The brush is positioned between the outer casing and the water tank and moves in contact with the outer wall of the heat collection tube.

[0040] Preferably, the rinsing assembly includes:

[0041] The descaling agent tank is located on top of the water tank and connected to the water tank via a valve body;

[0042] The drain valve, located at the bottom of the tank, is used to drain the scale that has been removed.

[0043] Compared with existing technologies, the present invention provides a solar thermal collection system adapted to urban and rural construction, which has the following beneficial effects:

[0044] 1. This solar thermal system, adapted for urban and rural construction, uses a combination of mechanical scraping and chemical descaling to remove scale from the collector pipes, water tank, and the inner wall of the bottom tank. This solves the problem of reduced heat transfer efficiency caused by scale buildup in traditional solar water heaters, restores heat transfer capacity, and ensures the solar thermal collection effect.

[0045] 2. This solar thermal system, adapted for urban and rural construction, uses a descaling component to perform in-situ self-cleaning of the inner wall of the collector section. This eliminates the need for disassembling the collector tubes for high-pressure rinsing, avoiding disassembly risks, extending the service life of the equipment, and solving the problem that traditional static cleaning cannot cover all areas. By using reciprocating movement and rotation linkage, it ensures that the scale adhering to the inner wall of the collector section is effectively separated, improving its descaling effect.

[0046] 3. This solar thermal system, adapted for urban and rural construction, uses the outer surface of the heat collection tube to contact the brush as the tube rotates, allowing the brush to remove debris adhering to the outside of the tube, thus preventing it from affecting the heat collection tube's ability to receive sunlight and ensuring the heat collection efficiency and effect. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0048] Figure 2 For the present invention Figure 1 Enlarged structural diagram of section A in the middle;

[0049] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0050] Figure 4 For the present invention Figure 3 Enlarged structural diagram of section B in the middle;

[0051] Figure 5 This is a schematic diagram of the heat collection section of the present invention;

[0052] Figure 6 This is a cross-sectional structural diagram of the bottom box of the present invention;

[0053] Figure 7 This is a schematic diagram of the external structure of the rotating shaft of the present invention;

[0054] Figure 8 This is a partial cross-sectional structural diagram of the heat collection section of the present invention;

[0055] Figure 9 This is a schematic diagram of the external structure of the rotating rod of the present invention;

[0056] Figure 10 This is a schematic diagram of the external structure of the heat collection tube of the present invention;

[0057] Figure 11 This is a schematic diagram of the external structure of the elastic telescopic rod of the present invention.

[0058] In the diagram: 1. Bracket; 2. Heat collector tube; 3. Water tank; 4. Base box; 5. Connecting plate; 6. Descaling agent tank; 601. Drain valve; 7. Rotating rod; 701. First connecting rod; 702. First scraper; 8. Rotating shaft; 801. Second connecting rod; 802. Second scraper; 9. Protective shell; 901. Worm gear; 902. Worm wheel; 10. Drive motor; 11. Elastic telescopic rod; 111. Top rod; 12. Force-bearing block; 13. Guide rod; 14. Outer shell; 141. Movable gear; 142. Rack plate; 15. Brush. Detailed Implementation

[0059] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0060] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] like Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, this embodiment proposes a solar thermal system adapted to urban and rural construction, including a support frame 1, fixed to the roof or ground of a building, using a lightweight aluminum alloy frame structure with a galvanized anti-corrosion surface. The heat collection unit is movably mounted on the support frame 1, including heat collection tubes 2, a water tank 3, and a base box 4. The heat collection tubes 2 are parallel arranged vacuum glass tubes, and their upper and lower ends are connected to the water tank 3 and the base box 4, respectively. The water tank 3 and the base box 4 are circular stainless steel boxes, with the spacing fixed by a connecting plate 5. The descaling unit integrates mechanical scraping and linkage structures, including a first descaling component inside the heat collection tubes 2, a second descaling component inside the water tank 3 and the base box 4, and a drive component for driving the second descaling components. The two second descaling components are connected to the first descaling component through a linkage structure. The flushing component, with its coordinated design of chemical descaling and sewage discharge, is mounted on the water tank 3 and the base box 4 and works in conjunction with the descaling unit.

[0062] This application uses a drive component to activate a second descaling component inside the base tank 4. This second descaling component, through a lower linkage structure, activates a first descaling component inside the collector tube 2. This, in turn, causes the upper end of the first descaling component to activate a second descaling component inside the water tank 3 via a linkage structure. This achieves mechanical scraping and cleaning of scale on the inner wall of the collector section. Combined with the chemical descaling of the flushing component, this effectively removes scale from the collector tube 2, water tank 3, and the inner wall of the base tank 4. This solves the problem of reduced heat transfer efficiency caused by scale buildup in traditional solar water heaters, restoring heat transfer capacity and ensuring the solar heat collection effect. Furthermore, the descaling component performs in-situ self-cleaning of the inner wall of the collector section, eliminating the need for disassembling the collector tube 2 for high-pressure flushing, avoiding disassembly risks, extending the equipment's lifespan, and solving the problem of traditional static cleaning failing to cover all areas. By utilizing reciprocating movement and rotation linkage, it ensures that scale adhering to the inner wall of the collector section is effectively separated and removed, improving the descaling effect.

[0063] It should be noted that the descaling component can effectively shake off or be impacted and removed from its own structure by working with the water body during operation.

[0064] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, in a preferred embodiment, based on the above method, the first descaling component further includes a rotating rod 7 rotatably connected between the water tank 3 and the bottom tank 4, a plurality of first connecting rods 701 equidistantly distributed along the axial direction of the rotating rod 7, and a first scraper 702 connected to the end of each first connecting rod 701 and in contact with the inner wall of the heat collection tube 2. When the first descaling component is working, the rotating rod 7 rotates between the water tank 3 and the bottom tank 4. The rotating rod 7 drives the first scraper 702 to rotate on the inner wall of the heat collection tube 2 through the first connecting rods 701, scraping off the scale inside. The upper end of the rotating rod 7 is linked to the second descaling component in the water tank 3 through a linkage structure, so that the second scraper 802 simultaneously scrapes off the scale on the inner wall of the water tank 3. The lower end of the rotating rod 7 is driven by the second descaling component in the bottom tank 4 through another linkage structure.

[0065] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, in a preferred embodiment, based on the above method, the second descaling component further includes a rotating shaft 8 rotatably disposed in the water tank 3 or the bottom tank 4, a plurality of second connecting rods 801 equidistantly distributed along the axial direction of the rotating shaft 8, and a second scraper 802 connected to the end of each second connecting rod 801 and in contact with the inner wall of the water tank 3 or the bottom tank 4; when the rotating shaft 8 rotates, it drives the second scraper 802 to scrape off the scale on the inner wall of the water tank 3 or the bottom tank 4 through the second connecting rods 801. The rotating shaft 8 of one of the second descaling components located in the water tank 3 is in the same straight line as the central axis of the water tank 3, and the rotating shaft 8 of the other second descaling component located in the bottom tank 4 is in the same straight line as the central axis of the bottom tank 4.

[0066] It should be noted that the rotating shaft 8 is driven by a linkage structure, that is, the rotating shaft 8 drives the worm gear 901 rotating inside the protective shell 9 to mesh with the worm wheel 902 outside the rotating rod 7, thereby causing the second descaling component inside the bottom box 4 to drive the first descaling component inside the heat collection tube 2 to move.

[0067] Furthermore, the second connecting rod 801 is rotatably mounted on the rotating shaft 8. When the second scraper 802 rotates, if it touches the rotating rod 7, it will automatically tilt and swing due to the elastic design such as the action of a torsion spring. The second scraper 802 and the second connecting rod 801 rotate relative to the rotating shaft 8 to avoid hard collision.

[0068] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 11 As shown, in a preferred embodiment, based on the above method, the drive assembly further includes a drive motor 10 fixed on the bracket 1 and elastic telescopic rods 11 respectively placed at both ends of the bracket 1. One of the elastic telescopic rods 11 is connected to the output shaft of the drive motor 10 and the rotating shaft 8 inside the base box 4. A top rod 111 is fixed on the outside of the elastic telescopic rod 11. A force-bearing block 12 that abuts against the top rod 111 is provided at the end of the base box 4. The contact surface of the force-bearing block 12 is an inclined pressing surface.

[0069] When the drive motor 10 is running, the top rod 111 on the outer side of the elastic telescopic rod 11 abuts against the inclined pressing surface of the force block 12 at the end of the bottom box 4. The pressing action forces the heat collection part (including the heat collection pipe 2, water tank 3, and bottom box 4) to move back and forth along the guide rod 13 relative to the bracket 1, causing the heat collection part to shake and improving the effect of removing and separating the softened scale inside the heat collection part. It should be noted that ball bearings can be set at the end of the top rod 111 to change the sliding friction between the top rod 111 and the force block 12 into rolling friction, thereby reducing the wear between the top rod 111 and the force block 12.

[0070] like Figure 3 , Figure 4 , Figure 6 and Figure 10 As shown, in a preferred embodiment, based on the above method, a shell 14 is further fixed on the outside of the base box 4. A movable gear 141 connected to the heat collection tube 2 is rotatably arranged inside the shell 14. When the heat collection part moves as a whole, the movable gear 141 inside the shell 14 meshes with the fixed rack plate 142 to drive the heat collection tube 2 to rotate, so that its outer wall contacts the brush 15, so that the brush 15 brushes away the debris adhering to the outside of the heat collection tube 2, so as to avoid affecting the heat collection tube 2 to receive sunlight, thereby ensuring the heat collection efficiency and heat collection effect of the heat collection tube 2.

[0071] like Figure 1 , Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, the flushing assembly further includes a descaling agent tank 6 located at the top of the water tank 3 and connected to the water tank 3 via a valve body, and a drain valve 601 located at the bottom of the bottom tank 4 for discharging scale. The valve body between the descaling agent tank 6 and the water tank 3 is opened, allowing the descaling solution to flow into the water tank 3 through the connecting pipe. The descaling solution spreads downwards from the water tank 3 to the collector tube 2 and the bottom tank 4, soaking the inner walls of the collector tube 2, the water tank 3, and the bottom tank 4, softening the scale. After the softened scale on the inner wall of the collector is cleaned by the descaling assembly, the drain valve 601 at the bottom of the bottom tank 4 is opened to discharge the scale-containing wastewater.

[0072] This invention also discloses a method for using a solar thermal collector system adapted to urban and rural construction, comprising the following steps:

[0073] S1: Open the valve between the descaling agent tank 6 and the water tank 3 to allow the descaling solution to flow into the water tank 3 through the connecting pipe. The descaling solution spreads downwards from the water tank 3 to the heat collector tube 2 and the bottom tank 4, soaking the inner walls of the heat collector tube 2, the water tank 3 and the bottom tank 4, softening the scale.

[0074] S2: Start the drive motor 10. Its output shaft drives the rotating shaft 8 inside the bottom box 4 to rotate through the elastic telescopic rod 11. The rotating shaft 8 drives the second scraper 802 to rotate and scrape along the inner wall of the bottom box 4 through the second connecting rod 801 to remove the scale on the inner wall.

[0075] If the second scraper 802 touches the rotating rod 7 when it rotates, it will automatically tilt and swing due to its elastic design to avoid hard collision;

[0076] S3: The rotating shaft 8 drives the rotating rod 7 to rotate synchronously through the linkage structure. The rotating rod 7 drives the first scraper 702 to rotate on the inner wall of the heat collection tube 2 through the first connecting rod 701 to scrape off the scale inside.

[0077] The upper end of the rotating rod 7 is linked to the second descaling component inside the water tank 3, so that the second scraper 802 can simultaneously scrape off the scale on the inner wall of the water tank 3.

[0078] S4: When the drive motor 10 is running, the top rod 111 on the outside of the elastic telescopic rod 11 abuts against the inclined pressing surface of the force block 12 at the end of the bottom box 4. The pressing action forces the heat collection part to move back and forth along the guide rod 13 relative to the bracket 1. The shaking of the heat collection part enhances the dirt separation effect.

[0079] S5: When the heat collection unit moves, the movable gear 141 inside the outer shell 14 meshes with the fixed rack plate 142 to drive the heat collection tube 2 to rotate, so that its outer wall contacts the brush 15 to remove dirt from the outer surface.

[0080] S6: Open the drain valve 601 at the bottom of the bottom box 4 to drain the wastewater containing scale;

[0081] S7: Close the drain valve 601, refill with clean water, and repeat the mechanical scraping and dynamic displacement steps of S2-S6 above to rinse away residual descaling solution and scale fragments.

[0082] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A solar thermal collector system adapted for urban and rural construction, comprising a support frame (1), characterized in that, Also includes: ‌ The heat collection unit is movably mounted on the support (1) and includes heat collection pipes (2) and interconnected water tank (3) and bottom box (4). The descaling unit includes a first descaling component in the heat collection tube (2), a second descaling component in the water tank (3) and the bottom box (4), and a drive component for driving the second descaling component; The flushing assembly is located in the water tank (3) and the bottom tank (4) and works in conjunction with the descaling unit; The first descaling component and the second descaling component are connected by a linkage structure; The second descaling component includes: The rotating shaft (8) is rotatably installed inside the water tank (3) or the bottom tank (4); Several second connecting rods (801) are equidistantly distributed along the axis of rotation (8); Several second scrapers (802) are connected to the ends of each second connecting rod (801) and contact the inner wall of the water tank (3) or the bottom tank (4); The driving component includes: Drive motor (10) is fixed to bracket (1); Two elastic telescopic rods (11) are provided and placed at both ends of the bracket (1), one of which is connected to the output shaft of the drive motor (10) and the rotating shaft (8) inside the base box (4). Top rod (111) is fixed to the outside of elastic telescopic rod (11); The force-bearing block (12) is located at the end of the bottom box (4) and abuts against the top rod (111), and its contact surface is an inclined extrusion surface; A connecting plate (5) is provided between the bottom box (4) and the water tank (3), and a guide rod (13) is provided at the end of the water tank (3) and is slidably connected to the bracket (1).

2. The solar thermal collection system adapted to urban and rural construction according to claim 1, characterized in that, The first descaling component includes: Rotating rod (7) is rotatably connected between water tank (3) and bottom tank (4); Several first connecting rods (701) are equidistantly distributed along the axis of the rotating rod (7); The first scraper (702) is connected to the end of each first connecting rod (701) and contacts the inner wall of the heat collection tube (2).

3. A solar thermal collection system adapted to urban and rural construction according to claim 2, characterized in that, Both the water tank (3) and the bottom tank (4) are circular boxes; The rotating shaft (8) of one of the second descaling components located in the water tank (3) is in the same straight line as the central axis of the water tank (3), and the rotating shaft (8) of the other second descaling component located in the bottom tank (4) is in the same straight line as the central axis of the bottom tank (4).

4. A solar thermal collection system adapted to urban and rural construction according to claim 3, characterized in that, Also includes: A torsion spring is disposed inside the rotating shaft (8) and sleeved on the outside of the second connecting rod (801); The second scraper (802) elastically abuts against the outer wall of the rotating rod (7).

5. A solar thermal collection system adapted to urban and rural construction according to claim 4, characterized in that, The linkage structure includes: A protective shell (9) is disposed between the rotating rod (7) and the rotating shaft (8); The worm gear (901) is rotatably connected inside the protective shell (9) and connected to the rotating shaft (8); The worm gear (902) is mounted on the rotating rod (7) and meshes with the worm (901).

6. A solar thermal collection system adapted to urban and rural construction according to claim 5, characterized in that, Also includes: ‌ The outer casing (14) is fixed to the outside of the base box (4); The movable gear (141) is rotatably connected inside the outer casing (14) and connected to the heat collection tube (2); The rack plate (142) is slidably connected to the housing (14) and meshes with the movable gear (141), and its end is fixed to the bracket (1) by a connecting rod. A brush (15) is placed between the outer shell (14) and the water tank (3) and moves against the outer wall of the heat collection tube (2).

7. A solar thermal collection system adapted to urban and rural construction according to claim 6, characterized in that, The flushing assembly includes: The descaling agent tank (6) is located on the top of the water tank (3) and is connected to the water tank (3) through a valve body; The drain valve (601) is located at the bottom of the base box (4) and is used to drain the scale that has been removed.

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