Straight-through pipe S-shaped flow channel solar water collection device

Abstract

The invention discloses a straight-through pipe S-shaped flow channel solar heat collection water device which comprises a water tank, and the top end of the water tank is detachably connected with an end cover; the circulating system is mounted on the water tank; a plurality of straight-through type solar vacuum tubes are fixed on the fixed support in parallel, and the plurality of straight-through type solar vacuum tubes are communicated in series in an S-shaped structure through a pipeline series system; the two groups of temperature sensors are respectively arranged on the water tank and the pipeline series system and are used for monitoring the water temperature in the water tank; the flow sensor is mounted on the circulating system; the control device is electrically connected with the circulating system, the temperature sensor and the flow sensor; and a heat absorption coating is arranged in the straight-through type solar vacuum tube. The straight-through type solar vacuum tubes are adopted, an S-shaped vacuum tube arrangement mode is formed through pipeline series connection system installation, water flow dead zones in the vacuum tubes are eliminated, incrustation accumulation is reduced, and the heat collection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solar water collectors, in particular to a solar water collector device with a straight-through pipe S-shaped flow channel. Background Art

[0002] With the development of renewable energy technology, solar water heaters are becoming more and more popular. Traditional solar water heaters have many disadvantages. For example, they are limited by the vacuum tube structure and can only be made open at one end and closed at the other end. This also causes a dead zone in the water flow inside the vacuum tube, which reduces the heat transfer coefficient and prevents the hot water in the vacuum tube from being fully mixed with the cold water. Due to the existence of the dead zone, scale is easily accumulated at the bottom of the vacuum tube, which reduces the heat collection efficiency of the collector and is prone to tube bursts.

[0003] At present, the ways to increase the heat collection efficiency of solar thermal collectors are mostly to increase the diameter of solar vacuum tubes and regularly clean the scale inside the solar vacuum tubes; manual cleaning is time-consuming and labor-intensive, and the cost is high. Moreover, for solar water collectors installed in inaccessible places, cleaning is more difficult, and improper operation may also cause damage to the solar vacuum tubes. Therefore, it is necessary to develop a solar water collection device that can effectively increase the heat collection efficiency of solar thermal collectors and prevent scale accumulation inside the vacuum tubes. Summary of the invention

[0004] The purpose of the present invention is to provide a solar water collecting device with a straight-through pipe S-shaped flow channel to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a straight-through pipe S-shaped flow channel solar water collection device, comprising:

[0006] A water tank, wherein the top of the water tank is detachably connected to an end cover;

[0007] A circulation system, wherein the circulation system is installed on the water tank;

[0008] A fixed bracket, on which a plurality of straight-through solar vacuum tubes are fixed in parallel, the plurality of straight-through solar vacuum tubes are connected in series in an S-shaped structure through a pipeline series system, and the output end and the input end of the circulation system are respectively connected to the input end and the output end of the pipeline series system;

[0009] Temperature sensors, wherein two groups of temperature sensors are provided, and the two groups of temperature sensors are respectively installed on the water tank and the pipeline series system, and are used to monitor the water temperature in the water tank;

[0010] A flow sensor, the flow sensor is installed on the circulation system and is used to monitor the circulation flow;

[0011] A control device, wherein the control device is electrically connected to the circulation system, the temperature sensor, and the flow sensor;

[0012] Wherein, a heat-absorbing coating is arranged in the straight-through solar vacuum tube.

[0013] According to the through-tube S-shaped flow channel solar water heating device provided by the present invention, the circulation system includes a water inlet pipe and a water outlet pipe, the water tank is provided with a water inlet hole and a water outlet hole, the water inlet pipe is fixedly connected with the water inlet hole, the flow sensor is installed on the water inlet pipe, a water pump is installed on the water outlet hole, the water outlet end of the water pump is fixedly connected with the water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively fixedly connected with the pipeline series system.

[0014] According to the through-pipe S-shaped flow channel solar water heating device provided by the present invention, the pipeline series system includes a U-shaped connecting elbow, two groups of split headers with outlets and several groups of split headers without outlets. The adjacent straight-through solar vacuum tubes are fixedly connected through the U-shaped connecting elbow, and the U-shaped connecting elbows are relatively connected through the outlet split header. The straight-through solar vacuum tubes located at the two ends of the S-shaped structure are respectively fixedly connected to the split headers with outlets, and the water inlet pipe and the water outlet pipe are respectively fixedly connected to the two groups of split headers with outlets; the temperature sensor is installed on the split header without outlet.

[0015] According to the through-pipe S-shaped flow channel solar water collecting device provided by the present invention, the water inlet pipe and the split manifold with an outlet, and the water outlet pipe and the split manifold with an outlet are fixedly connected via water pipe joints respectively.

[0016] According to the through-tube S-shaped flow channel solar water collecting device provided by the present invention, a sealing ring is provided between the U-shaped connecting elbow and the straight-through solar vacuum tube.

[0017] According to the through-tube S-shaped flow channel solar water collecting device provided by the present invention, the inner diameter of the straight-through solar vacuum tube is 47 mm, the outer diameter is 58 mm, and the length is 1800 mm.

[0018] According to the through-tube S-shaped flow channel solar water collector device provided by the present invention, the control device includes a Raspberry Pi touch screen, and the Raspberry Pi is signal-connected to the touch screen. The U-shaped connecting elbow is made of white PPR material, with a thickness of 3 mm and an inner diameter of 58 mm.

[0019] According to the through-tube S-shaped flow channel solar water collecting device provided by the present invention, the top surface of the water tank is fixedly connected to a lifting handle, and the bottom of the water tank is fixedly connected to a fixed support.

[0020] According to the through-tube S-shaped flow channel solar water collecting device provided by the present invention, the split manifold with outlet and the split manifold without outlet are both made of 304 stainless steel with a thickness of 0.5 mm, and the outer layer is wrapped with a polyurethane insulation layer with a thickness of 50 mm.

[0021] The present invention discloses the following technical effects:

[0022] The present invention can be used for a solar water collection device. By adopting a straight-through solar vacuum tube and installing it in a pipeline series system to form an S-shaped vacuum tube arrangement, the dead zone of water flow inside the vacuum tube is eliminated, scale accumulation is reduced, and the heat collection efficiency is improved.

[0023] The present invention uses information fed back to the control device by a temperature sensor and a flow sensor, and uses a built-in program to judge and match the water flow rate at the water pump outlet according to different temperatures, thereby maximizing its heat collection efficiency and achieving automation.

[0024] The present invention can arrange different numbers of straight-through solar vacuum tubes according to different water demands to meet personalized needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a solar water collection device with a straight-through pipe S-shaped flow channel according to the present invention;

[0027] Figure 2 It is a structural schematic diagram of the pipeline series system of the present invention;

[0028] Figure 3 It is a schematic diagram of the S-type flow channel structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the water tank structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of a straight-through solar vacuum tube of the present invention;

[0031] Figure 6 This is a schematic diagram of the U-shaped connecting elbow structure of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the circulation system of the present invention.

[0033] Among them, 1. water tank; 2. end cover; 3. fixed support; 4. temperature sensor; 5. control device; 6. water pump; 7. water outlet pipe; 8. water pipe joint; 9. fixed bracket; 10. U-shaped connecting elbow; 11. straight-through solar vacuum tube; 12. split manifold with outlet; 13. water inlet pipe; 14. flow sensor; 15. lifting handle; 16. sealing ring; 17. split manifold without outlet; 18. Raspberry Pi; 19. touch screen; 20. heat-absorbing coating. 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 7 The present invention provides a straight-through pipe S-shaped flow channel solar water collection device, comprising:

[0037] A water tank 1, the top of which is detachably connected to an end cap 2;

[0038] A circulation system, the circulation system is installed on the water tank 1;

[0039] A fixed bracket 9, on which a plurality of straight-through solar vacuum tubes 11 are fixed in parallel, the plurality of straight-through solar vacuum tubes 11 are connected in series in an S-shaped structure through a pipeline series system, and the output end and the input end of the circulation system are respectively connected to the input end and the output end of the pipeline series system;

[0040] Temperature sensor 4, two groups of temperature sensors 4 are provided, and the two groups of temperature sensors 4 are respectively installed on the water tank 1 and the pipeline series system, and are used to monitor the water temperature in the water tank 1;

[0041] A flow sensor 14 is installed on the circulation system to monitor the circulation flow;

[0042] A control device 5, the control device 5 is electrically connected to the circulation system, the temperature sensor 4, and the flow sensor 14;

[0043] A heat absorbing coating 20 is disposed in the straight-through solar vacuum tube 11 .

[0044] A further optimized solution is provided, in which the circulation system comprises an inlet pipe 13 and an outlet pipe 7. An inlet hole and an outlet hole are provided on the water tank 1. The inlet pipe 13 is fixedly connected to the inlet hole. A flow sensor 14 is installed on the inlet pipe 13. A water pump 6 is installed on the outlet hole. The outlet end of the water pump 6 is fixedly connected to the outlet pipe 7. The inlet pipe 13 and the outlet pipe 7 are respectively fixedly connected to the pipeline series system.

[0045] To further optimize the solution, the pipeline series system includes a U-shaped connecting elbow 10, two groups of split headers 12 with outlets and several groups of split headers 17 without outlets. Adjacent straight-through solar vacuum tubes 11 are fixedly connected through the U-shaped connecting elbow 10, and the relative U-shaped connecting elbows 10 are connected through the outlet split headers. The straight-through solar vacuum tubes 11 located at both ends of the S-shaped structure are fixedly connected to the split headers 12 with outlets, and the water inlet pipe 13 and the water outlet pipe 7 are fixedly connected to the two groups of split headers 12 with outlets; a temperature sensor 4 is installed on the split header 17 without outlet.

[0046] In this embodiment, water pipe joints 8 are installed at both ends of the water inlet pipe 13 and the water outlet pipe 7; the water pump 6 is connected to the water tank 1, and the upper end of the water tank 1 is installed with a lifting handle 15 and an end cover 2. The water inlet pipe 13 and the water outlet pipe 7 are PVC pipes with a nominal outer diameter of 32mm. The model of the water pump 6 is FP20-15-60, with a maximum speed of 2900 rpm, a head of 5 meters, and a suction range of 3 meters. The water tank 1 is made of stainless steel as the inner liner material, the outer shell material is aluminized zinc plate, and the middle interlayer is filled with 50mm polyurethane foam plastic.

[0047] The flow sensor 14 is installed on the upper side of the water tank 1 and connected to the water outlet pipe 7; the temperature sensor 4 and the fixed support 3 are also installed on the water tank 1, and another temperature sensor 4 is installed on the non-outlet split manifold 17. The flow sensor 14 model is PF3W704-03, which can display a flow range of 0.35-5.50L / min, and the accuracy error is 2% of the full scale. The temperature sensor 4 model is ZKP15-3-2, which is a pt100 thermal resistance type, and the temperature range is 0-200 degrees Celsius.

[0048] The control device 5 is electrically connected to the water pump 6, the flow sensor 14 and the temperature sensor 4. The control device 5 is electrically connected to the Raspberry Pi 18 and the touch screen 19. The processor of the Raspberry Pi 18 is Broadcom BCM2711, quad-core, and the micro SD card slot is used to load the operating system and data storage. The touch screen 19 adopts a Buco 7-inch touch TFT LCD display screen, 800*480 pixels, and a memory capacity of 128MB.

[0049] According to a further optimized solution, the water inlet pipe 13 and the split manifold 12 with an outlet, and the water outlet pipe 7 and the split manifold 12 with an outlet are fixedly connected via water pipe joints 8 .

[0050] According to a further optimized solution, a sealing ring 16 is provided between the U-shaped connecting elbow 10 and the straight-through solar vacuum tube 11 .

[0051] According to a further optimization scheme, the inner diameter of the straight solar vacuum tube 11 is 47 mm, the outer diameter is 58 mm, and the length is 1800 mm.

[0052] Further optimizing the scheme, the control device 5 includes a Raspberry Pi 18 and a touch screen 19, and the signal connection between the Raspberry Pi 18 and the touch screen 19 is performed. The U-shaped connecting elbow 10 is made of white ppr material, with a thickness of 3 mm and an inner diameter of 58 mm.

[0053] According to a further optimized solution, a lifting handle 15 is fixedly connected to the top surface of the water tank 1 , and a fixed support 3 is fixedly connected to the bottom of the water tank 1 .

[0054] To further optimize the solution, the material of the outlet split header 12 and the non-outlet split header 17 are both 304 stainless steel with a thickness of 0.5 mm, and the outer layer is wrapped with a polyurethane insulation layer with a thickness of 50 mm.

[0055] Working method:

[0056] Turn on the computer through the power button on the touch screen 19, then the screen turns on and enters the human-computer interaction interface. The software system is developed based on Qt, and the software is deployed to the Raspberry Pi 18. The program will perform a self-check to confirm whether it is in a normal state; then the program automatically determines whether the electrical signals of the flow sensor 14 and the temperature sensor 4 are normal. If not, the display interface will prompt "Sensor abnormality".

[0057] Water is stored in the water tank 1 as a heating medium and needs to be filled to more than half of its capacity. If the water level is too low, the water pump 6 will not be able to supply water to the vacuum tube. The end cover 2 prevents debris from entering, and the lifting handle 15 is used for lifting and transferring the water tank 1 when it is empty.

[0058] When the sun rises, the sunlight shines on the straight-through solar vacuum tube 11, and the inner heat-absorbing coating 20 converts light energy into heat energy and transmits the temperature to the fluid medium water. When the temperature rises, the temperature sensor 4 installed on the outletless split header 17 converts the water temperature signal into an electrical signal in real time and transmits it to the Raspberry Pi 18; the Raspberry Pi 18 deploys a built-in program to determine the temperature of the water in the outletless split header 17 and matches the outlet water flow rate of the water pump 6 according to different temperatures. When the temperature of the water in the outletless split header 17 is less than 40°C, the Raspberry Pi 18 receives the signal but does not send a start signal to the water pump 6. At this time, the water in the device is in a static state. When the temperature of water in the non-outlet split manifold 17 is greater than 40°C, the water pump 6 receives a start signal and starts to start. There are three gears of the water pump 6 corresponding to three temperature ranges, namely 40-60°C, 60-80°C, and 80-100°C, corresponding to three water flow velocities of 0.4m / s, 0.6m / s, and 0.8m / s.

[0059] After the water pump 6 works, it pumps out the water at the bottom of the water tank 1, and transports the water to the S-shaped flow channel composed of the straight-through solar vacuum tube 11, the U-shaped connecting elbow 10, the outlet split manifold 12 and the non-outlet split manifold 17 through the water inlet pipe 13; the outlet split manifold 12 connects the water inlet pipe 13 and the straight-through solar vacuum tube 11, the non-outlet split manifold 7 connects two straight-through solar vacuum tubes 11 placed front and back, and the U-shaped connecting elbow 10 connects two straight-through solar vacuum tubes 11 arranged up and down. Due to its split design, the non-outlet split manifold can arrange different numbers of straight-through solar vacuum tubes 11 according to different water demand to meet personalized needs.

[0060] When cold water enters the S-shaped flow channel, hot water will be automatically discharged through the outlet pipe 7 and the flow sensor 14 into the water tank 1. The flow sensor 14 converts the flow rate information into an electrical signal and transmits it to the Raspberry Pi 18. The built-in program combines the temperature information to determine whether the flow rate corresponds to the three temperature ranges; if it does not correspond, the Raspberry Pi 18 sends a signal to the water pump 6 to adjust its speed to reach the corresponding state.

[0061] When hot water enters the water tank 1, it is in a water circulation state. Cold and hot water are mixed in the water tank 1, gradually increasing the overall water temperature. The temperature sensor 4 installed in the middle of the water tank 1 converts the temperature signal into an electrical signal and transmits it to the Raspberry Pi 18 and displays it on the touch screen 19.

[0062] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A solar water collector with a straight-through pipe S-shaped flow channel, characterized in that: include: A water tank (1), wherein the top end of the water tank (1) is detachably connected to an end cover (2); A circulation system, the circulation system being installed on the water tank (1); A fixed bracket (9), wherein a plurality of straight-through solar vacuum tubes (11) are fixed in parallel on the fixed bracket (9), wherein the plurality of straight-through solar vacuum tubes (11) are connected in series in an S-shaped structure through a pipeline series system, and the output end and the input end of the circulation system are respectively connected to the input end and the output end of the pipeline series system; temperature sensors (4), wherein two groups of the temperature sensors (4) are provided, and the two groups of the temperature sensors (4) are respectively installed on the water tank (1) and the pipeline series system, and are used to monitor the water temperature in the water tank (1); A flow sensor (14), the flow sensor (14) being installed on the circulation system and used for monitoring the circulation flow; A control device (5), wherein the control device (5) is electrically connected to the circulation system, the temperature sensor (4), and the flow sensor (14); Wherein, a heat-absorbing coating (20) is arranged inside the straight-through solar vacuum tube (11).

2. A straight-through pipe S-shaped flow channel solar water collector according to claim 1, characterized in that: The circulation system comprises a water inlet pipe (13) and a water outlet pipe (7); a water inlet hole and a water outlet hole are provided on the water tank (1); the water inlet pipe (13) is fixedly connected to the water inlet hole; the flow sensor (14) is mounted on the water inlet pipe (13); a water pump (6) is mounted on the water outlet hole; a water outlet end of the water pump (6) is fixedly connected to the water outlet pipe (7); the water inlet pipe (13) and the water outlet pipe (7) are respectively fixedly connected to the pipeline series system.

3. A straight-through pipe S-shaped flow channel solar water collector according to claim 2, characterized in that: The pipeline series system comprises a U-shaped connecting elbow (10), two groups of split manifolds with outlets (12) and a plurality of groups of split manifolds without outlets (17); adjacent straight-through solar vacuum tubes (11) are fixedly connected via the U-shaped connecting elbow (10); the straight-through solar vacuum tubes (11) located at both ends of the S-shaped structure are fixedly connected to the split manifolds with outlets (12); the water inlet pipe (13) and the water outlet pipe (7) are fixedly connected to the two groups of split manifolds with outlets (12); and the temperature sensor (4) is installed on the split manifolds without outlets (17).

4. A straight-through pipe S-shaped flow channel solar water collector according to claim 3, characterized in that: The water inlet pipe (13) and the split manifold with an outlet (12), and the water outlet pipe (7) and the split manifold with an outlet (12) are fixedly connected via water pipe joints (8) respectively.

5. A straight-through pipe S-shaped flow channel solar water collector according to claim 3, characterized in that: A sealing ring (16) is provided between the U-shaped connecting elbow (10) and the straight-through solar vacuum tube (11).

6. A straight-through pipe S-shaped flow channel solar water collector according to claim 1, characterized in that: The straight-through solar vacuum tube (11) has an inner diameter of 47 mm, an outer diameter of 58 mm, and a length of 1800 mm.

7. A straight-through pipe S-shaped flow channel solar water collector according to claim 3, characterized in that: The control device (5) comprises a Raspberry Pi (18) and a touch screen (19), and a signal connection is established between the Raspberry Pi (18) and the touch screen (19). The U-shaped connecting elbow (10) is made of white PPR material, has a thickness of 3 mm, and an inner diameter of 58 mm.

8. A straight-through pipe S-shaped flow channel solar water collector according to claim 1, characterized in that: The top surface of the water tank (1) is fixedly connected to a lifting handle (15), and the bottom of the water tank (1) is fixedly connected to a fixed support (3).

9. A straight-through pipe S-shaped flow channel solar water collector according to claim 3, characterized in that: The material of the outlet split manifold (12) and the non-outlet split manifold (17) are both 304 stainless steel with a thickness of 0.5 mm, and the outer layer is wrapped with a polyurethane insulation layer with a thickness of 50 mm.

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