A self-cleaning solar water heater

Abstract

This invention discloses a self-cleaning solar water heater, relating to the field of solar water heaters. It includes a vacuum tube, an arc-shaped bracket, a base frame, a support column, and a descaling solution storage bottle. A water storage tank and a base tank are respectively located at the upper and lower ends of the vacuum tube. The invention controls the opening of a solenoid valve to inject descaling solution into the water storage tank. A rotating mechanism drives the solar water heater to rotate. A reader senses the RFID chip inside the first gear and controls the unfolding of the inner support assembly, causing the cleaning rod to move outward and adhere to the inner wall of the vacuum tube under pressure. The first gear then contacts the arc-shaped rack, causing the cleaning rod to rotate on the inner wall of the vacuum tube, cleaning the inner wall through rotation. This achieves self-cleaning of the vacuum tube by combining physical and chemical cleaning methods without disassembling the vacuum tube, avoiding the damage caused by disassembly and reassembly in traditional cleaning methods, extending its service life, and also improving its heating rate.

Description

Technical Field

[0001] The invention relates to the technical field of solar water heaters, in particular to a self-cleaning solar water heater. Background Art

[0002] Solar water heaters are heating devices that convert sunlight into heat energy, heating water from low temperature to high temperature to meet people's hot water needs in life and production. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structural form, mainly vacuum tube solar water heaters. Vacuum tube household solar water heaters are composed of heat collecting tubes, water storage tanks, brackets and other related parts. The conversion of solar energy into heat energy mainly relies on vacuum heat collecting tubes. Vacuum heat collecting tubes use the principle that hot water floats and cold water sinks to make water microcirculate and obtain the required hot water.

[0003] After the solar water heater has been used for a period of time, scale will form inside the water tank and the inner wall of the vacuum tube. Especially when scale forms on the inner wall of the vacuum tube, the heat conductivity of the scale is very poor, and the water absorbs less heat. Due to the heat barrier of the scale on the water side in the vacuum tube, the water absorbs less heat and the water temperature is difficult to increase. At the same time, the scale on the inner wall of the tube reduces the speed of water circulation to a certain extent, resulting in insufficient heat inside the vacuum tube and slow water temperature rise. Therefore, it is necessary to clean the scale on the inner wall of the vacuum tube;

[0004] However, in the prior art, the cleaning of scale on the inner wall of the vacuum tube is divided into two types: physical cleaning and chemical cleaning. Physical cleaning requires a professional cleaning and maintenance technician to remove the vacuum tube and directly rinse the inner wall with a high-pressure water gun at a certain pressure. Chemical cleaning is to pour the descaling liquid into the water inlet of the water heater, let the water heater circulate naturally for about thirty minutes, discharge the descaling liquid, add water and circulate it again, pull out the vacuum tube, pour out the scale, and then clean it several times. Among them, no matter it is the physical cleaning method or the chemical cleaning method, the vacuum tube needs to be removed when cleaning, and the vacuum tube is fragile. During the disassembly and assembly process, the vacuum tube is easily damaged. Summary of the invention

[0005] The purpose of the present invention is to provide a self-cleaning solar water heater to solve the problem raised in the above background technology that no matter it is a physical cleaning method or a chemical cleaning method, the vacuum tube needs to be disassembled when cleaning, and the vacuum tube is fragile, and it is very easy to cause damage to the vacuum tube during the disassembly and assembly process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning solar water heater, comprising a vacuum tube, an arc-shaped bracket, a bottom frame, a support column and a descaling liquid storage bottle, wherein a water storage tank and a bottom box are respectively arranged at the upper and lower ends of the vacuum tube, the water storage tank and the bottom box are both arc-shaped, and both are fixedly mounted at the upper and lower ends of the arc-shaped bracket, the descaling liquid storage bottle is fixedly connected to one end of the water storage tank through a solenoid valve, a flip mechanism is arranged below the arc-shaped bracket, a rotating mechanism is arranged below the flip mechanism, the flip mechanism is used to adjust the angle of the water heater, and the rotating mechanism is used to control the rotation of the water heater;

[0007] A support column is fixedly connected to the upper side of the base frame, a reader and an arc-shaped rack are fixedly connected to the upper end of the support column, and the reader is located at the end of the arc-shaped rack;

[0008] A self-cleaning mechanism is provided inside the vacuum tube, the lower end of which passes through the bottom box and is rotatably mounted on the upper part of the rotating mechanism, the self-cleaning mechanism comprises a gear, a first coupling shaft, a shaft sleeve, a hexagonal shaft, a second coupling shaft, an unfolded inner support assembly, a cleaning rod and a limit ring, the unfolded inner support assembly is provided with multiple groups, and the multiple groups of the unfolded inner support assembly are rotatably connected with the cleaning rod, so as to push the cleaning rod to fit the inner wall of the vacuum tube for cleaning;

[0009] The gears are provided in multiple groups, and the multiple groups of gears are distributed along a horizontal arc, wherein the first and last groups of gears are provided with RFID chips, the first group of gears are close to the reader and sensed and identified, and are used to control the expansion or contraction of the expansion inner support assembly, and the tail group of gears are close to the reader and sensed and identified, and are used to control the opening and closing of the drain valves at both ends of the bottom box, the gears and the arc-shaped rack are located in the same horizontal plane, and after the gears and the arc-shaped rack are meshed, the self-cleaning mechanism is driven to rotate inside the vacuum tube and clean.

[0010] Preferably, the first coupling is fixedly installed in the middle of the gear, the first coupling is rotatably connected to the sleeve via a universal joint, the hexagonal shaft is slidably inserted in the hexagonal groove inside the sleeve, and the hexagonal shaft is rotatably connected to the second coupling via a universal joint.

[0011] Preferably, the second coupling is rotatably connected to the inside of the bottom box, the second coupling is rotatably connected to the limiting ring, the limiting ring abuts against the head and tail ends of the inner wall of the vacuum tube, and multiple groups of the unfolding inner support components are respectively arranged on the outer surface of the second coupling.

[0012] Preferably, the unfolding inner support assembly includes a micro servo electric cylinder, a loose ring, a first support rod, a first auxiliary rod, a second support rod, a fixed ring, a connecting piece, a second auxiliary rod and a third support rod, the micro servo electric cylinder is fixedly installed on the outside of the second coupling, the end of the micro servo electric cylinder is fixedly connected to the lower side of the loose ring, the loose ring is slidably sleeved on the outer surface of the second coupling, and the fixed ring is fixedly installed on the outer surface of the second coupling.

[0013] Preferably, the first strut is rotatably connected to the outside of the loose ring, the second strut is rotatably connected to the outside of the fixed ring, the other end of the first strut is rotatably connected to the middle of the second strut, and the other end of the second strut is rotatably connected to the third strut.

[0014] Preferably, the first auxiliary rod is rotatably connected to the other end of the first support rod and one end of the third support rod, the other end of the third support rod is rotatably connected to the middle part of the connecting member, and the second auxiliary rod is rotatably connected to the other end of the second support rod and one end of the connecting member.

[0015] Preferably, the other end of the connecting member is rotatably connected to the cleaning rod, and both the second support rod and the third support rod are provided with a receiving groove inside, the second support rod receiving groove is used to receive the first auxiliary rod and the first support rod, and the receiving groove of the third support rod is used to receive the second auxiliary rod.

[0016] Preferably, the rotating mechanism includes a first servo motor, a first belt assembly, a vertical shaft, a turntable, a right-angle frame and a fan-shaped plate, the first coupling shaft is rotatably connected to the fan-shaped plate through a bearing, the fan-shaped plate is fixedly connected to the upper side of the right-angle frame, the turntable is fixedly connected to the lower side of the right-angle frame, the turntable is rotatably installed in the middle of the upper side of the base frame, the vertical shaft is fixedly connected to the middle of the lower side of the turntable, the lower end of the vertical shaft is fixedly installed on the driven pulley of the first belt assembly, the output shaft of the first servo motor is fixedly installed on the driving pulley of the first belt assembly, and the first servo motor is fixedly installed in the middle of the base frame.

[0017] Preferably, the flipping mechanism includes a second servo motor, a second belt assembly, a movable seat, a screw rod, a connecting frame and a mounting frame, the second servo motor is fixedly mounted on one of the inner sides of the right-angle frame, the second servo motor is transmission-connected to the screw rod through the second belt assembly, and the screw rod is rotatably mounted on the other inner side of the right-angle frame.

[0018] Preferably, the movable seat is threadedly connected to the outer surface of the screw rod, the movable seat and the screw rod are rotatably connected, the connecting frame is rotatably connected to the middle part of one side of the mounting frame, and the lower end of the mounting frame is rotatably connected to the middle area of ​​the right-angle frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, by controlling the solenoid valve to open, the descaling liquid in the descaling liquid storage bottle is injected into the water tank, the rotating mechanism drives the solar water heater to rotate, the reader senses the RFID chip inside the first gear, controls the expansion of the inner support assembly, so that the cleaning rod moves outward and fits against the inner wall of the vacuum tube under force, and the first gear begins to contact with the arc-shaped rack, driving the cleaning rod to rotate on the inner wall of the vacuum tube to clean the inner wall, thereby achieving the self-cleaning of the vacuum tube by combining the physical cleaning method and the chemical cleaning method without removing the vacuum tube, avoiding the problem of damage to the vacuum tube due to disassembly and cleaning in the traditional cleaning situation, extending the service life of the solar water heater, and also improving its heating rate.

[0021] 2. In the present invention, the first gear is brought close to the reader, and the reader senses the RFID chip inside the first gear. Based on the radio frequency identification technology, the expansion of the inner support assembly is controlled. When the first gear passes through the reader again, the reader senses the internal RFID chip and controls the contraction of the inner support assembly. The second support rod accommodating groove in the expanded inner support assembly is used to accommodate the first auxiliary rod and the first support rod, and the third support rod accommodating groove is used to accommodate the second auxiliary rod, thereby ensuring that the structure is more compact after contraction and does not affect the circulation of hot and cold water inside the vacuum tube.

[0022] 3. In the present invention, the basic structure of the solar water heater is composed of a water storage tank, multiple groups of vacuum tubes and a bottom box. The basic structure is installed on an arc-shaped bracket. The flip mechanism adjusts the angle of the arc-shaped bracket, that is, adjusts the angle of the solar water heater to receive sunlight with the largest area. The angle is adjusted according to the latitude of the installation area. Then, the solar water heater is driven to rotate by the rotating mechanism, and rotates slowly with the revolution of the sun, always maintaining a suitable angle, receiving the best light, and shortening the heating time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a first three-dimensional structural schematic diagram of a self-cleaning solar water heater of the present invention;

[0024] Figure 2 A second three-dimensional structural schematic diagram of a self-cleaning solar water heater according to the present invention;

[0025] Figure 3 A self-cleaning solar water heater according to the present invention Figure 2 A is a schematic diagram of the enlarged three-dimensional structure;

[0026] Figure 4It is a partial three-dimensional structural schematic diagram of a self-cleaning solar water heater of the present invention;

[0027] Figure 5 A third three-dimensional structural schematic diagram of a self-cleaning solar water heater according to the present invention;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the positional relationship of a self-cleaning mechanism in a self-cleaning solar water heater of the present invention;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of a self-cleaning mechanism in a self-cleaning solar water heater of the present invention;

[0030] Figure 8 It is a schematic diagram of a three-dimensional structure of a part of a self-cleaning mechanism in a self-cleaning solar water heater of the present invention;

[0031] Fig. 9 It is a partial planar structural schematic diagram of an unfolded inner support assembly in a self-cleaning solar water heater of the present invention;

[0032] Fig.10 The present invention is a flow chart of a self-cleaning process in a self-cleaning solar water heater.

[0033] In the figure: 1, water storage tank; 2, vacuum tube; 3, arc bracket; 4, bottom box; 5, self-cleaning mechanism; 51, gear; 52, first coupling shaft; 53, shaft sleeve; 54, hexagonal shaft; 55, second coupling shaft; 56, unfolding inner support assembly; 561, micro servo electric cylinder; 562, loose ring; 563, first support rod; 564, first auxiliary rod; 565, second support rod; 566, fixed ring; 567, connecting piece; 568, second auxiliary rod; 569, third Support rod; 57, cleaning rod; 58, limit ring; 6, rotating mechanism; 61, first servo motor; 62, first belt assembly; 63, vertical axis; 64, turntable; 65, right-angle frame; 66, fan-shaped plate; 7, base frame; 8, flip mechanism; 81, second servo motor; 82, second belt assembly; 83, moving seat; 84, screw rod; 85, connecting frame; 86, mounting frame; 9, support column; 10, reader; 11, arc-shaped rack; 12, descaling liquid storage bottle. DETAILED DESCRIPTION

[0034] 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 implementation regulations described 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.

[0035] Embodiment 1

[0036] Reference Figure 1-10 As shown: a self-cleaning solar water heater, including a vacuum tube 2, an arc-shaped bracket 3, a base frame 7, a support column 9 and a descaling liquid storage bottle 12, the upper and lower ends of the vacuum tube 2 are respectively provided with a water storage tank 1 and a bottom box 4, the water storage tank 1 and the bottom box 4 are both arc-shaped, and the two are fixedly installed at the upper and lower ends of the arc-shaped bracket 3, respectively, the descaling liquid storage bottle 12 is fixedly connected to one end of the water storage tank 1 through a solenoid valve, a flip mechanism 8 is provided below the arc-shaped bracket 3, a rotating mechanism 6 is provided below the flip mechanism 8, the flip mechanism 8 is used to adjust the angle of the water heater, and the rotating mechanism 6 is used to control the rotation of the water heater, the upper side of the base frame 7 is fixedly connected with a support column 9, the upper end of the support column 9 is fixedly connected with a reader 10 and an arc-shaped rack 11, the reader 10 is located at the end of the arc-shaped rack 11, the interior of the vacuum tube 2 is provided with a self-cleaning mechanism 5, the lower end of the self-cleaning mechanism 5 passes through the bottom box 4 and is rotatably installed on the rotating mechanism 6 The self-cleaning mechanism 5 includes a gear 51, a first coupling shaft 52, a sleeve 53, a hexagonal shaft 54, a second coupling shaft 55, an unfolded inner support assembly 56, a cleaning rod 57 and a limit ring 58. The unfolded inner support assembly 56 is provided with multiple groups, and the multiple groups of unfolded inner support assemblies 56 are rotatably connected with the cleaning rod 57, and are used to push the cleaning rod 57 to fit the inner wall of the vacuum tube 2 for cleaning. The gear 51 is provided with multiple groups, and the multiple groups of gears 51 are distributed along a horizontal arc, wherein the first and last groups of gears 51 are provided with RFID chips, the first gear 51 is close to the reader 10 and sensed and identified, and is used to control the unfolded inner support assembly 56 to unfold or retract, the tail gear 51 is close to the reader 10 and sensed and identified, and is used to control the opening and closing of the drain valves at both ends of the bottom box 4, the gear 51 and the arc rack 11 are located in the same horizontal plane, and after the gear 51 and the arc rack 11 are engaged, the self-cleaning mechanism 5 is driven to rotate inside the vacuum tube 2 and clean.

[0037] In this embodiment, the angle of the water heater is adjusted by the flip mechanism 8 so that the maximum area can receive sunlight. The rotating mechanism 6 drives the solar water heater to rotate, and rotates slowly with the revolution of the sun, always maintaining a suitable angle to receive the best light. After sunset, when the solar water heater needs to be cleaned, the solenoid valve is controlled to open, and the descaling liquid in the descaling liquid storage bottle 12 is injected into the water storage tank 1 through the solenoid valve, and then spreads to the vacuum tube 2 and the bottom box 4. After soaking for a period of time, the rotating mechanism 6 is controlled to rotate until the first gear 51 approaches the reader 10. The reader 10 senses the RFID chip inside the first gear 51. Based on the radio frequency identification technology, the unfolding inner support assembly 56 is controlled to unfold, and multiple groups of unfolding inner support assemblies 56 work synchronously, so that the cleaning rod 57 moves outward and fits against the inner wall of the vacuum tube 2 under stress.

[0038] As the rotating mechanism 6 continues to rotate, the first gear 51 begins to contact the arc-shaped rack 11, and the gear 51 begins to rotate under the force, driving the first coupling shaft 52 to rotate, and under the connection of the universal joint, driving the shaft sleeve 53 and the hexagonal shaft 54 ​​to rotate, and under the connection of the universal joint, driving the second coupling shaft 55 to rotate, and the second coupling shaft 55 drives the multiple groups of unfolded inner support components 56 to make a circular motion, thereby driving the cleaning rod 57 to rotate on the inner wall of the vacuum tube 2, rotating and cleaning the inner wall, and realizing a self-cleaning effect;

[0039] The same principle is used for the subsequent multiple gears 51 to realize the self-cleaning of the inner walls of the multiple vacuum tubes 2. When the last gear 51 contacts the reader 10, the reader 10 senses the RFID chip inside it and controls the drain valves at both ends of the bottom box 4 to open based on the radio frequency identification technology. When the last gear 51 meshes with the arc-shaped rack 11 and performs self-cleaning, the clean sewage is discharged from the drain valve.

[0040] When the last gear 51 disengages from the arc-shaped rack 11, the rotating mechanism 6 rotates in the opposite direction, and all gears 51 mesh with the arc-shaped rack 11 again, and the inner walls of all vacuum tubes 2 are cleaned again. When the last gear 51 passes through the reader 10 again, the reader 10 senses the RFID chip inside it and controls the drain valve to be closed. When the first gear 51 passes through the reader 10 again, the reader 10 senses the internal RFID chip and controls the expansion of the inner support component 56 to shrink, which does not affect the circulation of hot and cold water inside the vacuum tube 2. When the solar water heater returns to the position at sunset, clean water is re-injected and the above steps are repeated for secondary cleaning to clean away the residual descaling liquid and dirt, thereby achieving a combination of physical cleaning and chemical cleaning without removing the vacuum tube, completing the self-cleaning of the vacuum tube, avoiding the problem of damage to the vacuum tube due to disassembly and cleaning in traditional cleaning conditions, extending the service life of the solar water heater, and also increasing its heating rate.

[0041] Embodiment 2

[0042] according to Figure 5-7 As shown, the first coupling shaft 52 is fixedly installed in the middle part of the gear 51, the first coupling shaft 52 is rotatably connected to the shaft sleeve 53 through a universal joint, the hexagonal shaft 54 ​​is slidably inserted in the hexagonal groove inside the shaft sleeve 53, the hexagonal shaft 54 ​​is rotatably connected to the second coupling shaft 55 through a universal joint, the second coupling shaft 55 is rotatably connected to the inside of the bottom box 4, the second coupling shaft 55 is rotatably connected to the limit ring 58, the limit ring 58 abuts against the head and tail ends of the inner wall of the vacuum tube 2, and multiple groups of unfolded inner support assemblies 56 are respectively arranged on the outer surface of the second coupling shaft 55.

[0043] In this embodiment, the first gear 51 begins to contact the arc-shaped rack 11. Since the arc-shaped rack 11 is fixedly installed by the support column 9, the gear 51 begins to rotate under the force, driving the first coupling shaft 52 to rotate. Under the connection of the universal joint, it drives the sleeve 53 and the hexagonal shaft 54 ​​to rotate. Under the connection of the universal joint, it drives the second coupling shaft 55 to rotate. The second coupling shaft 55 drives multiple groups of unfolded inner support assemblies 56 to make circular motions, thereby driving the cleaning rod 57 to rotate on the inner wall of the vacuum tube 2 to rotate and clean the inner wall to achieve self-cleaning. The same principle is used for subsequent multiple gears 51 to achieve self-cleaning of the inner walls of multiple vacuum tubes 2. Among them, the sleeve 53 and the hexagonal shaft 54 ​​are slidably connected by a hexagonal groove, and the ends of the two are connected by universal joints to ensure rotation transmission without affecting the adjustment of the angle of the solar water heater.

[0044] Embodiment 3

[0045] according to Figure 5-10 As shown, the unfolded inner support assembly 56 includes a micro servo electric cylinder 561, a loose ring 562, a first support rod 563, a first auxiliary rod 564, a second support rod 565, a fixed ring 566, a connecting piece 567, a second auxiliary rod 568 and a third support rod 569. The micro servo electric cylinder 561 is fixedly installed on the outer side of the second coupling shaft 55, and the end of the micro servo electric cylinder 561 is fixedly connected to the lower side of the loose ring 562. The loose ring 562 is slidably sleeved on the outer surface of the second coupling shaft 55. The fixed ring 566 is fixedly installed on the outer surface of the second coupling shaft 55. The first support rod 563 is rotatably connected to the outer side of the loose ring 562, the second support rod 565 is rotatably connected to the outer side of the fixed ring 566, and the other end of the first support rod 563 is rotatably connected to the outer side of the loose ring 562. In the middle of the second support rod 565, the other end of the second support rod 565 is rotatably connected to the third support rod 569, the first auxiliary rod 564 is rotatably connected to the other end of the first support rod 563 and one end of the third support rod 569 respectively, the other end of the third support rod 569 is rotatably connected to the middle of the connecting member 567, the second auxiliary rod 568 is rotatably connected to the other end of the second support rod 565 and one end of the connecting member 567 respectively, the other end of the connecting member 567 is rotatably connected to the cleaning rod 57, and both the second support rod 565 and the third support rod 569 are provided with a receiving groove inside, the second support rod 565 receiving groove is used to accommodate the first auxiliary rod 564 and the first support rod 563, and the receiving groove of the third support rod 569 is used to accommodate the second auxiliary rod 568.

[0046] In this embodiment, the first gear 51 is close to the reader 10, and the reader 10 senses the RFID chip inside the first gear 51. Based on the radio frequency identification technology, the micro servo electric cylinder 561 is controlled to start, and the movable rod of the micro servo electric cylinder 561 is extended and pushes the loop ring 562 upward. The loop ring 562 moves upward on the outer surface of the second coupling shaft 55, lifting the lower end of the first support rod 563. The upper end of the first support rod 563 supports the middle part of the second support rod 565, so that the second support rod 565 rotates around the fixed ring 566 at a certain angle, and the lower end of the second support rod 565 moves outward, and the distance from the second coupling shaft 55 increases. The upper end of the first support rod 563 supports the middle part of the second support rod 565. At the same time as the support rod 565, the first auxiliary rod 564 is pulled, and the lower end of the first auxiliary rod 564 pulls the third support rod 569, so that the angle between the third support rod 569 and the second support rod 565 increases, and the upper end of the third support rod 569 pushes the connecting member 567 outward. While the angle increases, one end of the second auxiliary rod 568 is restricted to the lower end of the second support rod 565, so that the upper end of the second auxiliary rod 568 pulls the connecting member 567, and the connecting member 567 moves in a fan-shaped manner around the connection point with the third support rod 569, pushing the cleaning rod 57. The multiple groups of unfolded inner support components 56 work synchronously, so that the cleaning rod 57 moves outward and fits against the inner wall of the vacuum tube 2 under stress.

[0047] When the first gear 51 passes through the reader 10 again, the reader 10 senses the internal RFID chip and controls the expansion inner support assembly 56 to retract. The second support rod 565 receiving groove in the expansion inner support assembly 56 is used to receive the first auxiliary rod 564 and the first support rod 563, and the third support rod 569 receiving groove is used to receive the second auxiliary rod 568, thereby ensuring that the structure is more compact after contraction and does not affect the circulation of hot and cold water inside the vacuum tube 2. The structure in the expansion inner support assembly 56 is made of titanium material, which is small in size and high in strength.

[0048] Embodiment 4

[0049] according to Figure 1-4As shown, the rotating mechanism 6 includes a first servo motor 61, a first belt assembly 62, a vertical shaft 63, a turntable 64, a right angle frame 65 and a fan-shaped plate 66. The first coupling shaft 52 is rotatably connected to the fan-shaped plate 66 through a bearing. The fan-shaped plate 66 is fixedly connected to the upper side of the right angle frame 65. The turntable 64 is fixedly connected to the lower side of the right angle frame 65. The turntable 64 is rotatably mounted on the upper middle part of the base frame 7. The vertical shaft 63 is fixedly connected to the lower middle part of the turntable 64. The lower end of the vertical shaft 63 is fixedly mounted on the driven pulley of the first belt assembly 62. The output shaft of the first servo motor 61 is fixedly mounted on the driving pulley of the first belt assembly 62. The first servo motor 61 Fixedly installed in the middle of the base frame 7, the flipping mechanism 8 includes a second servo motor 81, a second belt assembly 82, a movable seat 83, a screw rod 84, a connecting frame 85 and a mounting frame 86. The second servo motor 81 is fixedly installed on one of the inner sides of the right-angle frame 65. The second servo motor 81 is transmission-connected to the screw rod 84 through the second belt assembly 82. The screw rod 84 is rotatably installed on the other inner side of the right-angle frame 65. The movable seat 83 is threadedly connected to the outer surface of the screw rod 84. The movable seat 83 and the screw rod 84 are rotatably connected. The connecting frame 85 is rotatably connected to the middle part of one side of the mounting frame 86. The lower end of the mounting frame 86 is rotatably connected to the middle area of ​​the right-angle frame 65.

[0050] In this embodiment, by controlling the second servo motor 81 to start, the second servo motor 81 injects power into the second belt assembly 82, and the second belt assembly 82 drives the screw rod 84 to rotate on the inner side of the right-angle frame 65. After the screw rod 84 rotates, it drives the moving seat 83 to move up and down, and the moving seat 83 drives the lower end of the connecting frame 85 to lift or drop a distance, thereby adjusting the angle between the connecting frame 85 and the mounting frame 86, wherein the lower end position of the mounting frame 86 is immovable, and then the mounting frame 86 performs a fan-shaped motion with the connection point of its lower end and the right-angle frame 65 as the origin, thereby adjusting the angle of the arc bracket 3, and the water storage tank 1, multiple groups of vacuum tubes 2 and the bottom box 4 constitute the basic structure of the solar water heater. The basic structure is installed on the arc bracket 3, so adjusting the angle of the arc bracket 3 is to adjust the angle of the solar water heater, so as to receive sunlight with the largest area. The angle is adjusted according to the latitude of the installation area. By controlling the first servo motor 61 to start regularly, the first servo motor 61 injects power into the first belt assembly 62, and the first belt assembly 62 drives the vertical shaft 63 to rotate. The vertical shaft 63 drives the turntable 64 to rotate on the upper side of the base frame 7, and the right-angle frame 65 is fixed on the upper side of the turntable 64, thereby driving the turntable 64 to rotate, and then driving the solar water heater to rotate, and slowly follow the rotation of the sun, always maintaining a suitable angle to receive the best light.

[0051] The use method and working principle of the device: When using the self-cleaning solar water heater, the angle of the arc bracket 3 is adjusted through the flip mechanism 8, and the water storage tank 1, multiple groups of vacuum tubes 2 and the bottom box 4 constitute the basic structure of the solar water heater, and the basic structure is all installed on the arc bracket 3, so adjusting the angle of the arc bracket 3 is to adjust the angle of the solar water heater, so that the largest area can receive sunlight, and the angle is adjusted according to the latitude of the installation area. Then, the solar water heater is driven to rotate through the rotating mechanism 6, and rotates slowly with the revolution of the sun, always maintaining a suitable angle to receive the best light;

[0052] The position of the base frame 7 is arranged according to the sunrise and sunset time of the installation area to ensure that the gear 51 does not contact the reader 10 and the arc-shaped rack 11 when the solar water heater tracks the sun during the day. This is the daily working state of the solar water heater during the day. At night, the first servo motor 61 is controlled to rotate in the reverse direction, and the solar water heater returns to the initial position to work the next day.

[0053] When the solar water heater needs to be cleaned, it works normally during the day. After sunset, when the hot water is used, the solenoid valve is controlled to open, and the descaling liquid in the descaling liquid storage bottle 12 is injected into the water tank 1, and then spreads to the vacuum tube 2 and the bottom box 4. After soaking for a period of time, the first servo motor 61 is controlled to continue to rotate, and the right-angle frame 65 is driven by the fan plate 66 to rotate until the first gear 51 approaches the reader 10. The reader 10 senses the RFID chip inside the first gear 51, and based on the radio frequency identification technology, the micro servo electric cylinder 561 is controlled to start, and the movable rod of the micro servo electric cylinder 561 extends and pushes the loop ring 562 upward. The loop ring 562 moves upward on the outer surface of the second coupling shaft 55, lifting the lower end of the first support rod 563, and the upper end of the first support rod 563 supports the middle part of the second support rod 565, so that the second support rod 56 The lower end of the second support rod 565 rotates around the fixed ring 566 at a certain angle, and the distance from the second coupling shaft 55 increases. The upper end of the first support rod 563 supports the second support rod 565 and pulls the first auxiliary rod 564. The lower end of the first auxiliary rod 564 pulls the third support rod 569, so that the angle between the third support rod 569 and the second support rod 565 increases. The upper end of the third support rod 569 pushes the connecting member 567 outward. While the angle increases, one end of the second auxiliary rod 568 is restricted at the lower end of the second support rod 565, so that the upper end of the second auxiliary rod 568 pulls the connecting member 567. The connecting member 567 moves in a fan shape around the connection point with the third support rod 569, pushing the cleaning rod 57. The multiple groups of unfolded inner support assemblies 56 work synchronously, so that the cleaning rod 57 moves outward and fits against the inner wall of the vacuum tube 2 under stress.

[0054] As the sector plate 66 continues to rotate, the first gear 51 begins to contact the arc-shaped rack 11. Since the arc-shaped rack 11 is fixedly installed by the support column 9, the gear 51 begins to rotate under force, driving the first coupling shaft 52 to rotate. Under the connection of the universal joint, the shaft sleeve 53 and the hexagonal shaft 54 ​​are driven to rotate. Under the connection of the universal joint, the second coupling shaft 55 is driven to rotate. The second coupling shaft 55 drives the multiple groups of unfolded inner support components 56 to make circular motion, thereby driving the cleaning rod 57 to rotate on the inner wall of the vacuum tube 2 to clean the inner wall by rotation, thereby achieving a self-cleaning effect.

[0055] The same principle is used for the subsequent multiple gears 51 to realize the self-cleaning of the inner walls of the multiple vacuum tubes 2. When the last gear 51 contacts the reader 10, the reader 10 senses the RFID chip inside it and controls the drain valves at both ends of the bottom box 4 to open based on the radio frequency identification technology. When the last gear 51 meshes with the arc-shaped rack 11 and performs self-cleaning, the clean sewage is discharged from the drain valve.

[0056] When the last gear 51 is disengaged from the arc-shaped rack 11, the first servo motor 61 rotates in the opposite direction, the fan-shaped plate 66 rotates in the opposite direction, and all gears 51 mesh with the arc-shaped rack 11 again, and the inner walls of all vacuum tubes 2 are cleaned again. When the last gear 51 passes through the reader 10 again, the reader 10 senses the RFID chip inside it and controls the drain valve to close. When the first gear 51 passes through the reader 10 again, the reader 10 senses the RFID chip inside it and controls the expansion inner support assembly 56 to shrink, so as not to affect the circulation of cold and hot water inside the vacuum tube 2.

[0057] When the solar water heater returns to the position at sunset, fresh water is refilled and the above steps are repeated for secondary cleaning to wash away the remaining descaling liquid and dirt.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning solar water heater, comprising a vacuum tube (2), an arc-shaped bracket (3), a base frame (7), a support column (9) and a descaling liquid storage bottle (12), characterized in that: A water storage tank (1) and a bottom box (4) are respectively arranged at the upper and lower ends of the vacuum tube (2); the water storage tank (1) and the bottom box (4) are both arc-shaped and are respectively fixedly mounted at the upper and lower ends of the arc-shaped bracket (3); the descaling liquid storage bottle (12) is fixedly connected to one end of the water storage tank (1) via a solenoid valve; a turning mechanism (8) is arranged below the arc-shaped bracket (3); a rotating mechanism (6) is arranged below the turning mechanism (8); the turning mechanism (8) is used to adjust the angle of the water heater; and the rotating mechanism (6) is used to control the rotation of the water heater; A support column (9) is fixedly connected to the upper side of the base frame (7), a reader (10) and an arc-shaped rack (11) are fixedly connected to the upper end of the support column (9), and the reader (10) is located at the end of the arc-shaped rack (11); A self-cleaning mechanism (5) is provided inside the vacuum tube (2). The lower end of the self-cleaning mechanism (5) passes through the bottom box (4) and is rotatably mounted on the upper part of the rotating mechanism (6). The self-cleaning mechanism (5) comprises a gear (51), a first coupling shaft (52), a shaft sleeve (53), a hexagonal shaft (54), a second coupling shaft (55), an unfolded inner support assembly (56), a cleaning rod (57) and a limiting ring (58). The unfolded inner support assembly (56) is provided with a plurality of groups. The plurality of groups of the unfolded inner support assembly (56) are rotatably connected to the cleaning rod (57) and are used to push the cleaning rod (57) to fit the inner wall of the vacuum tube (2) for cleaning. The gears (51) are provided in multiple groups, and the multiple groups of gears (51) are distributed along a horizontal arc, wherein the first and last groups of gears (51) are provided with RFID chips, the first group of gears (51) are close to the reader (10) and sense and identify, and are used to control the expansion or contraction of the expansion inner support component (56), and the tail group of gears (51) are close to the reader (10) and sense and identify, and are used to control the opening and closing of the sewage valves at both ends of the bottom box (4), the gears (51) and the arc-shaped rack (11) are located in the same horizontal plane, and after the gears (51) and the arc-shaped rack (11) are meshed, the self-cleaning mechanism (5) is driven to rotate inside the vacuum tube (2) and clean.

2. A self-cleaning solar water heater according to claim 1, characterized in that: The first coupling shaft (52) is fixedly mounted at the middle of the gear (51), the first coupling shaft (52) is rotatably connected to the shaft sleeve (53) via a universal joint, the hexagonal shaft (54) is slidably inserted into the hexagonal groove inside the shaft sleeve (53), and the hexagonal shaft (54) is rotatably connected to the second coupling shaft (55) via a universal joint.

3. A self-cleaning solar water heater according to claim 2, characterized in that: The second coupling shaft (55) is rotatably connected to the inside of the bottom box (4), the second coupling shaft (55) is rotatably connected to the limiting ring (58), the limiting ring (58) abuts against the front and rear ends of the inner wall of the vacuum tube (2), and a plurality of groups of the unfolding inner support components (56) are respectively arranged on the outer surface of the second coupling shaft (55).

4. A self-cleaning solar water heater according to claim 3, characterized in that: The unfolding inner support assembly (56) comprises a micro servo electric cylinder (561), a loose ring (562), a first support rod (563), a first auxiliary rod (564), a second support rod (565), a fixed ring (566), a connecting piece (567), a second auxiliary rod (568) and a third support rod (569), wherein the micro servo electric cylinder (561) is fixedly mounted on the outer side of the second coupling shaft (55), an end of the micro servo electric cylinder (561) is fixedly connected to the lower side of the loose ring (562), the loose ring (562) is slidably sleeved on the outer surface of the second coupling shaft (55), and the fixed ring (566) is fixedly mounted on the outer surface of the second coupling shaft (55).

5. A self-cleaning solar water heater according to claim 4, characterized in that: The first strut (563) is rotatably connected to the outside of the loose ring (562), the second strut (565) is rotatably connected to the outside of the fixed ring (566), the other end of the first strut (563) is rotatably connected to the middle of the second strut (565), and the other end of the second strut (565) is rotatably connected to the third strut (569).

6. A self-cleaning solar water heater according to claim 5, characterized in that: The first auxiliary rod (564) is rotatably connected to the other end of the first support rod (563) and one end of the third support rod (569), and the other end of the third support rod (569) is rotatably connected to the middle part of the connecting member (567). The second auxiliary rod (568) is rotatably connected to the other end of the second support rod (565) and one end of the connecting member (567).

7. A self-cleaning solar water heater according to claim 6, characterized in that: The other end of the connecting member (567) is rotatably connected to the cleaning rod (57), and both the second support rod (565) and the third support rod (569) are provided with a receiving groove inside. The receiving groove of the second support rod (565) is used to accommodate the first auxiliary rod (564) and the first support rod (563), and the receiving groove of the third support rod (569) is used to accommodate the second auxiliary rod (568).

8. A self-cleaning solar water heater according to claim 1, characterized in that: The rotating mechanism (6) comprises a first servo motor (61), a first belt assembly (62), a vertical shaft (63), a turntable (64), a right-angle frame (65) and a fan-shaped plate (66); the first coupling shaft (52) is rotatably connected to the fan-shaped plate (66) through a bearing; the fan-shaped plate (66) is fixedly connected to the upper side of the right-angle frame (65); the turntable (64) is fixedly connected to the lower side of the right-angle frame (65); the turntable (64) is rotatably mounted on the middle part of the upper side of the base frame (7); the vertical shaft (63) is fixedly connected to the middle part of the lower side of the turntable (64); the lower end of the vertical shaft (63) is fixedly mounted on the driven pulley of the first belt assembly (62); the output shaft of the first servo motor (61) is fixedly mounted on the driving pulley of the first belt assembly (62); and the first servo motor (61) is fixedly mounted on the middle part of the base frame (7).

9. A self-cleaning solar water heater according to claim 8, characterized in that: The flipping mechanism (8) comprises a second servo motor (81), a second belt assembly (82), a movable seat (83), a screw rod (84), a connecting frame (85) and a mounting frame (86); the second servo motor (81) is fixedly mounted on one inner side of the right-angle frame (65); the second servo motor (81) is transmission-connected to the screw rod (84) via the second belt assembly (82); and the screw rod (84) is rotatably mounted on the other inner side of the right-angle frame (65).

10. A self-cleaning solar water heater according to claim 9, characterized in that: The movable seat (83) is threadedly connected to the outer surface of the screw rod (84), the movable seat (83) and the screw rod (84) are rotatably connected, the connecting frame (85) is rotatably connected to the middle part of one side of the mounting frame (86), and the lower end of the mounting frame (86) is rotatably connected to the middle area of ​​the right-angle frame (65).

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