A flat-plate solar water heater with convenient descaling

Abstract

The utility model discloses a flat plate solar water heater convenient to remove scale relates to water heater technical field, including support frame, the support frame is fixedly arranged with collector and water tank, the inside fixed setting of water tank has heat exchange pipe, the inner wall movable setting of water tank has three scrapers, three the scraper is with the center axis of water tank as the axis and is evenly arranged in ring, the side of scraper is fixedly arranged with brush and rubber plate, the end of brush and rubber plate all is with the inner wall of water tank and is pasted. The utility model discloses when cleaning water tank, need not frequently disassembles hot water pipe, solves the existing flat plate solar water heater in the use process, when cleaning water tank, first, the hot water pipe on the water outlet pipe is unloaded, after completing the cleaning of water tank, again hot water pipe is fixed and is installed on the water outlet pipe, and the operation is troublesome, and the hot water pipe is frequently disassembled, and the connection between hot water pipe and water outlet pipe is reduced the problem of the sealing property of easily leading to.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a flat-plate solar water heater that is easy to descale. Background Technology

[0002] Flat-plate solar collectors are the term used in the solar energy industry to refer to the outdoor heat collection components of solar water heaters. Their main function is to collect the heat energy from sunlight and transfer it to a water tank through connecting pipes to heat the cold water inside. Solar energy is a clean energy source, and solar energy utilization technologies are receiving increasing attention.

[0003] The existing patent publication number CN220552099U, entitled "A Flat Plate Solar Water Heater for Convenient Descaling," proposes that after repeated heating of water inside the tank for a long time, a large amount of scale is generated and adheres to the inner wall of the tank. By turning the handle, the handle drives the rotating rod at the left end to rotate, which in turn drives the U-shaped plate and descaling brush at the left end to rotate, thus removing the scale inside. The scale is then discharged through the scale drain outlet, avoiding the accumulation of a large amount of scale that may clog the water outlet pipe.

[0004] However, in the process of using the flat-plate solar water heater disclosed in the above patent, when cleaning the water tank, the hot water pipe on the outlet pipe must first be removed, and after cleaning the water tank, the hot water pipe is then fixedly installed on the outlet pipe. This operation is cumbersome, and frequent disassembly and reassembly of the hot water pipe can easily lead to a decrease in the sealing of the connection between the hot water pipe and the outlet pipe. Therefore, it is necessary to propose a flat-plate solar water heater that is easy to descale in order to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a flat-plate solar water heater that is easy to descale, in order to solve the problem mentioned in the background art that when cleaning the water tank of the existing flat-plate solar water heater, the hot water pipe on the outlet pipe must be removed first, and after cleaning the water tank, the hot water pipe is fixedly installed on the outlet pipe. This operation is cumbersome, and the frequent disassembly and reassembly of the hot water pipe can easily lead to a decrease in the sealing of the connection between the hot water pipe and the outlet pipe.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flat-plate solar water heater for easy descaling, comprising a support frame, on which a collector and a water tank are fixedly mounted, and a heat exchange tube is fixedly mounted inside the water tank. Three scrapers are movably mounted on the inner wall of the water tank, and the three scrapers are evenly distributed in a ring around the central axis of the water tank.

[0007] A brush and a rubber plate are fixedly installed on the side of the scraper. The ends of the brush and the rubber plate are in contact with the inner wall of the water tank. The rubber plate has a "U" shaped structure. A collection groove is fixedly opened inside the scraper. The collection groove and the rubber plate correspond to each other.

[0008] A water pump is fixedly installed on the side of the support frame, and a connecting component is provided between the water pump and the scraper.

[0009] Preferably, the connecting assembly includes a rotating tube, which is rotatably disposed in the middle of the right end of the water tank via a sealed bearing. Three fixed tubes are fixedly disposed in a ring-shaped and uniformly distributed manner at the outer ring of the rotating tube at one end inside the water tank. The fixed tubes correspond one-to-one with the scraper and are fixedly connected to the scraper. A rotary joint is rotatably disposed at the end of the rotating tube outside the water tank. A pumping pipe is fixedly connected between the water inlet end of the water pump and the rotary joint.

[0010] Preferably, the pumping pipe, rotating pipe, fixed pipe, and collecting tank are interconnected.

[0011] Preferably, a second gear is fixedly installed on the outer ring of the rotating tube, a rotating shaft is rotatably installed on the right end of the water tank, a first gear is fixedly installed on the outer ring of the rotating shaft, the first gear and the second gear mesh with each other, and a handle is fixedly installed on the end of the rotating shaft.

[0012] Preferably, an inlet pipe and an outlet pipe are fixedly installed on the surface of the water tank, and valves are installed on the inlet pipe, the outlet pipe and the rotating pipe. A tap water pipe and a hot water pipe are respectively connected to the inlet pipe and the outlet pipe.

[0013] Preferably, both ends of the heat exchange tube penetrate the left end of the water tank, and both ends of the heat exchange tube are connected to the inlet and outlet ends of the collector through two medium pipes respectively. The heat exchange tube has a bent structure, and there is a gap between the heat exchange tube and the scraper.

[0014] Preferably, an air inlet pipe is fixedly installed on the top of the water tank, and a one-way valve is installed on the air inlet pipe.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model eliminates the need for frequent disassembly and reassembly of the hot water pipe when cleaning the water tank, thus solving the problem that with existing flat-plate solar water heaters, cleaning the water tank requires first removing the hot water pipe from the outlet pipe, and then reinstalling it after cleaning the water tank. This is cumbersome and frequent disassembly and reassembly of the hot water pipe can easily lead to a decrease in the sealing of the connection between the hot water pipe and the outlet pipe.

[0017] 2. When it is necessary to descale the inner wall of the water tank, open the valve on the outlet pipe and close the valve on the inlet pipe to drain the water inside the tank. Then, replenish the water tank with air through the air inlet pipe to balance the air pressure inside and outside the tank. When only some water for cleaning remains in the tank, close the valve on the outlet pipe, turn the handle to drive the rotating shaft and the first gear to rotate, which in turn drives the second gear, rotating pipe, fixed pipe and scraper to rotate synchronously. This allows the brush on the scraper to clean the scale on the inner wall of the tank, improving the convenience of the device for cleaning scale.

[0018] 3. After cleaning the inside of the water tank, open the valve on the rotating pipe and start the water pump to extract the water mixed with scale from the inside of the tank. The water mixed with scale passes through the collection tank, fixed pipe, rotating pipe and water pumping pipe in sequence and is discharged to the outside of the water tank. In addition, the scraping and guiding of the rubber plate ensures that all the water mixed with scale is pumped into the inside of the collection tank and then discharged, ensuring the cleanliness of the inside of the water tank and improving the cleaning effect of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a flat-plate solar water heater that facilitates descaling according to this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the water tank of this utility model;

[0021] Figure 3 For the present utility model Figure 2 A magnified schematic diagram of a local structure;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the scraper and water tank of this utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the scraper of this utility model.

[0024] In the diagram: 1. Support frame; 2. Solar collector; 3. Water tank; 4. Heat exchange tube; 5. Inlet pipe; 6. Outlet pipe; 7. Rotating pipe; 8. Fixed pipe; 9. Scraper; 10. Collection trough; 11. Brush; 12. Rubber plate; 13. Rotary joint; 14. Water pump; 15. Pumping pipe; 16. Rotating shaft; 17. First gear; 18. Second gear; 19. Handle; 20. Air inlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-5 The flat-plate solar water heater shown includes a support frame 1, on which a collector 2 and a water tank 3 are fixedly mounted. A heat exchange tube 4 is fixedly mounted inside the water tank 3. During use, since both ends of the heat exchange tube 4 penetrate the left end of the water tank 3, and both ends of the heat exchange tube 4 are connected to the inlet and outlet ends of the collector 2 through two medium pipes, the heat exchange tube 4 has a bent structure. The heating medium circulates between the collector 2 and the heat exchange tube 4, thereby continuously heating the water inside the water tank 3. After repeatedly heating the water in the water tank 3, a large amount of scale will be generated and adhere to the inner wall of the water tank 3, which needs to be cleaned.

[0027] Therefore, in this utility model, three scrapers 9 are movably arranged on the inner wall of the water tank 3. The three scrapers 9 are evenly distributed in a ring around the central axis of the water tank 3. A brush 11 and a rubber plate 12 are fixedly arranged on the side of the scraper 9. The ends of the brush 11 and the rubber plate 12 are in contact with the inner wall of the water tank 3. The rubber plate 12 has a "U" shaped structure. A collection groove 10 is fixedly opened inside the scraper 9. The collection groove 10 and the rubber plate 12 correspond to each other. A water pump 14 is fixedly arranged on the side of the support frame 1. A connecting component is provided between the water pump 14 and the scraper 9.

[0028] Furthermore, the connecting assembly includes a rotating pipe 7, which is rotatably mounted in the middle of the right end of the water tank 3 via a sealed bearing. Three fixed pipes 8 are fixedly mounted in a ring-shaped and uniformly distributed manner on the outer ring of the rotating pipe 7 located inside the water tank 3. The fixed pipes 8 correspond one-to-one with the scraper 9, and the fixed pipes 8 and scraper 9 are fixedly connected. A rotary joint 13 is rotatably mounted on the rotating pipe 7 located outside the water tank 3. A water pump 15 is fixedly connected between the water inlet end of the water pump 14 and the rotary joint 13. The water pump 15, the rotating pipe 7, the fixed pipes 8 and the collection tank 10 are interconnected.

[0029] Furthermore, an inlet pipe 5 and an outlet pipe 6 are fixedly installed on the surface of the water tank 3. Valves are installed on the inlet pipe 5, the outlet pipe 6, and the rotating pipe 7. The inlet pipe 5 and the outlet pipe 6 are respectively connected to a tap water pipe and a hot water pipe. An air inlet pipe 20 is fixedly installed on the top of the water tank 3. A one-way valve is installed on the air inlet pipe 20. A second gear 18 is fixedly installed on the outer ring of the rotating pipe 7. A rotating shaft 16 is rotatably installed on the right end of the water tank 3. A first gear 17 is fixedly installed on the outer ring of the rotating shaft 16. The first gear 17 and the second gear 18 mesh with each other. A handle 19 is fixedly installed at the end of the rotating shaft 16.

[0030] Specifically, when it is necessary to descale the inner wall of the water tank 3, open the valve on the outlet pipe 6 and close the valve on the inlet pipe 5 to drain the water inside the water tank 3. Then, replenish the water tank 3 with air through the air inlet pipe 20 to balance the air pressure inside and outside the water tank 3. When only some water remains inside the water tank 3 for cleaning, close the valve on the outlet pipe 6, turn the handle 19 to drive the rotating shaft 16 and the first gear 17 to rotate, which in turn drives the second gear 18, the rotating pipe 7, the fixed pipe 8 and the scraper 9 to rotate synchronously. This allows the brush 11 on the scraper 9 to clean the scale on the inner wall of the water tank 3, improving the convenience of the device for cleaning scale.

[0031] After cleaning, the water inside the water tank 3 is mixed with scale. Open the valve on the rotating pipe 7 and start the water pump 14 to pump out the water mixed with scale from the water tank 3. The water mixed with scale passes through the collection tank 10, the fixed pipe 8, the rotating pipe 7 and the pumping pipe 15 in sequence and is discharged to the outside of the water tank 3. In addition, through the scraping and guiding of the rubber plate 12, all the water mixed with scale can be pumped into the collection tank 10 and then discharged, ensuring the cleanliness of the inside of the water tank 3 and improving the cleaning effect of the device.

[0032] In summary, this utility model eliminates the need for frequent disassembly and reassembly of the hot water pipe when cleaning the water tank 3. This solves the problem of existing flat-plate solar water heaters where, during the cleaning process of the water tank 3, the hot water pipe on the outlet pipe 6 must first be removed, and then reinstalled on the outlet pipe 6 after cleaning the water tank 3. This operation is cumbersome, and frequent disassembly and reassembly of the hot water pipe can easily lead to a decrease in the sealing performance between the hot water pipe and the outlet pipe 6.

[0033] Furthermore, there is a gap between the heat exchange tube 4 and the scraper 9.

[0034] Working principle: When descaling the inner wall of water tank 3 is required, open the valve on the outlet pipe 6 and close the valve on the inlet pipe 5 to drain the water from the inside of water tank 3. Then, replenish the inside of water tank 3 with air through the air inlet pipe 20 to balance the air pressure inside and outside the water tank 3. When only some water remains in the water tank 3 for cleaning, close the valve on the outlet pipe 6 and turn the handle 19. This causes the rotating shaft 16 and the first gear 17 to rotate, which in turn drives the second gear 18, the rotating pipe 7, the fixed pipe 8, and the scraper 9 to rotate synchronously. This allows the brush 11 on the scraper 9 to remove the scale from the inner wall of water tank 3. After cleaning, open the valve on the rotating pipe 7 and start the water pump 14 to extract the water mixed with scale from the inside of the water tank 3. The water mixed with scale passes through the collection tank 10, the fixed pipe 8, the rotating pipe 7 and the water pumping pipe 15 in sequence and is then discharged to the outside of the water tank 3. In addition, the scraping and guiding effect of the rubber plate 12 ensures that all the water mixed with scale is pumped into the inside of the collection tank 10 and then discharged, ensuring the cleanliness of the inside of the water tank 3. After the cleaning is completed, close the valve on the rotating pipe 7 and turn off the water pump 14, and the flat plate solar water heater can be used normally.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flat plate solar water heater with easy cleaning comprising a support frame (1) characterized in that: The support frame (1) is fixedly equipped with a solar collector (2) and a water tank (3). The water tank (3) is fixedly equipped with a heat exchange tube (4). The inner wall of the water tank (3) is movably equipped with three scrapers (9). The three scrapers (9) are evenly distributed in a ring around the central axis of the water tank (3). A brush (11) and a rubber plate (12) are fixedly provided on the side of the scraper (9). The ends of the brush (11) and the rubber plate (12) are attached to the inner wall of the water tank (3). The rubber plate (12) has a "U" shaped structure. A collection groove (10) is fixedly provided inside the scraper (9). The collection groove (10) and the rubber plate (12) correspond to each other. A water pump (14) is fixedly installed on the side of the support frame (1), and a connecting component is provided between the water pump (14) and the scraper (9).

2. A flat panel solar water heater for easy descaling according to claim 1, characterized in that: The connecting assembly includes a rotating tube (7), which is rotatably mounted in the middle of the right end of the water tank (3) via a sealed bearing. Three fixed tubes (8) are fixedly mounted in a ring-shaped uniform arrangement at the outer ring of one end of the rotating tube (7) inside the water tank (3). The fixed tubes (8) correspond one-to-one with the scraper (9), and the fixed tubes (8) and the scraper (9) are fixedly connected. A rotary joint (13) is rotatably mounted at one end of the rotating tube (7) outside the water tank (3). A pumping pipe (15) is fixedly connected between the water inlet end of the pump (14) and the rotary joint (13).

3. A flat panel solar water heater for easy descaling according to claim 2, characterized in that: The pumping pipe (15), rotating pipe (7), fixed pipe (8) and collecting tank (10) are interconnected.

4. A flat panel solar water heater for easy descaling according to claim 3, characterized in that: A second gear (18) is fixedly installed on the outer ring of the rotating tube (7), a rotating shaft (16) is rotatably installed on the right end of the water tank (3), a first gear (17) is fixedly installed on the outer ring of the rotating shaft (16), the first gear (17) and the second gear (18) mesh with each other, and a handle (19) is fixedly installed at the end of the rotating shaft (16).

5. A flat panel solar water heater for easy descaling according to claim 4, characterized in that: The surface of the water tank (3) is fixedly provided with an inlet pipe (5) and an outlet pipe (6). Valves are provided on the inlet pipe (5), the outlet pipe (6) and the rotating pipe (7). The inlet pipe (5) and the outlet pipe (6) are respectively connected to a tap water pipe and a hot water pipe.

6. A flat panel solar water heater for easy descaling according to claim 1, characterized in that: Both ends of the heat exchange tube (4) penetrate the left end of the water tank (3). The two ends of the heat exchange tube (4) are connected to the inlet and outlet of the collector (2) through two medium tubes respectively. The heat exchange tube (4) has a bent structure and there is a gap between the heat exchange tube (4) and the scraper (9).

7. A flat panel solar water heater for easy descaling according to claim 6, characterized in that: An air inlet pipe (20) is fixedly installed on the top of the water tank (3), and a one-way valve is installed on the air inlet pipe (20).

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