Solar water purifying device

Abstract

The utility model discloses a solar water purification device which comprises a solar interface evaporator, a refrigeration condenser and a photovoltaic power supply, the solar interface evaporator comprises a light-transmitting cover plate, a photo-thermal film assembly, a water conveying liquid core, a water tank and an electric auxiliary heating pipe. The refrigeration condenser comprises a steam outlet pipe, a semiconductor refrigeration sheet and a purified water storage tank; a top opening of the light-transmitting cover plate is connected with a steam outlet pipe; the tail part of the steam outlet pipe is connected with a purified water storage tank; the semiconductor chilling plate is arranged on the outer wall of the steam outlet pipe, and the steam in the steam outlet pipe is condensed into liquid water to be stored in the purified water storage tank; the electric auxiliary heating pipe is arranged below the photo-thermal film assembly; and the photovoltaic power supply supplies power to the electric auxiliary heating pipe and the semiconductor chilling plate. Rapid condensation of water vapor is achieved through the semiconductor chilling plate; a photovoltaic power supply is matched with solar photo-thermal evaporation, so that continuous water purification under the conditions of no illumination and poor illumination conditions is realized. All-weather water purification production is realized by completely utilizing solar energy.

Description

Technical Field

[0001] This utility model relates to the technical field of water purification devices, and in particular to a solar-powered water purification device. Background Technology

[0002] With consumers increasingly concerned about water quality safety, solar water purification devices targeting off-grid users represent a new area for development in the water purifier market. Solar water purification devices absorb solar energy and convert it into heat, driving water evaporation. The condensed water vapor then yields purified water, effectively removing salt, microorganisms, particulate matter, and other impurities. Traditional solar distillation technology suffers from low evaporation efficiency and high heat loss. In recent years, interfacial evaporation technology has developed rapidly, utilizing photothermal materials to achieve high-efficiency photothermal conversion, enabling rapid water evaporation at lower temperatures, improving solar energy utilization efficiency and reducing energy loss. However, solar water purification devices based on interfacial evaporation technology still face several challenges. Interfacial evaporation technology is highly dependent on sunlight conditions; insufficient sunlight in actual environments affects the water evaporation rate, and it may even fail to operate on cloudy days or at night. High air temperature and pressure in the evaporation space result in a low natural condensation rate, and condensate buildup reduces solar energy utilization efficiency. Simultaneously, high pressure in the evaporator affects the driving force of interfacial evaporation, inhibiting the evaporation rate and leading to low and unstable water production. Utility Model Content

[0003] This utility model aims to provide a solar water purification device that can continuously and rapidly purify water. The technical solution is as follows:

[0004] A solar-powered water purification device includes a solar interface evaporator, a refrigeration condenser, and a photovoltaic power source;

[0005] The solar interface evaporator includes a light-transmitting cover plate, a photothermal film assembly, a water supply core, a water tank, and an electric auxiliary heating tube. The water supply core stands in the water tank, and its upper part is connected to the bottom of the photothermal film assembly.

[0006] The refrigeration condenser includes a steam outlet pipe, a semiconductor refrigeration chip, and a clean water storage tank;

[0007] The top opening of the light-transmitting cover is connected to a steam outlet pipe; the tail end of the steam outlet pipe is connected to a clean water storage tank.

[0008] The semiconductor cooling chip is arranged on the outer wall of the steam outlet pipe to condense the steam in the steam outlet pipe into liquid water and store it in the clean water storage tank.

[0009] The electrically assisted heating tube is disposed below the photothermal film assembly;

[0010] The photovoltaic power source is a photovoltaic power generation and energy storage device used to supply power to the electric auxiliary heating tube and the semiconductor refrigeration chip.

[0011] Furthermore, the light-transmitting cover is a hemispherical structure and is made of plexiglass.

[0012] Furthermore, the photothermal film assembly is formed by coating a photothermal conversion material onto a fiber material to form a composite film, processing it into an inverted conical shape, and fixing it onto a copper mesh frame to form a film assembly.

[0013] Furthermore, a heat insulation layer is arranged at the bottom of the photothermal film assembly and the electric auxiliary heating tube. The top of the heat insulation layer is at least 10mm away from the bottom of the photothermal film assembly and the bottom of the electric auxiliary heating tube, dividing the water tank into upper and lower spaces. The heat insulation layer has a central opening for placing the water delivery core.

[0014] Furthermore, the insulation layer is made of waterproof and heat-insulating foam material and processed into a cylindrical shape with a certain thickness.

[0015] Furthermore, the solar interface evaporator also includes a water tank top frame, and the photothermal film assembly, copper mesh frame, electric auxiliary heating tube, water supply core, and heat insulation layer are sequentially encapsulated in a cylinder and supported by the water tank top frame to form a detachable structure.

[0016] Furthermore, it also includes a first temperature sensor and a second temperature sensor; the first temperature sensor is disposed in the upper space of the insulation layer; the second temperature sensor is disposed inside the steam outlet pipe.

[0017] Furthermore, the electric auxiliary heating tube is an annular copper tube, with an electric heating element encapsulated inside.

[0018] Furthermore, the refrigeration condenser also includes a heat dissipation sleeve, the semiconductor cooling chip is arranged in the steam outlet pipe and arranged inside the heat dissipation sleeve, the heat dissipation sleeve is provided with an air inlet and an air outlet, the air inlet is provided with a ventilation fan, and the air outlet is connected to a heat dissipation duct.

[0019] The solar interface evaporator also includes an air-assisted heating pipe, which is arranged at the bottom of the water tank and fixed to the water tank wall through a heat dissipation duct and an exhaust port. It is connected to the air outlet of the refrigeration condenser through the heat dissipation duct.

[0020] Furthermore, the air-assisted heating tube is a ring-shaped or serpentine copper tube.

[0021] Compared with the prior art, the significant features of this utility model are:

[0022] (1) Using semiconductor cooling chips to achieve rapid condensation of water vapor reduces the gas pressure of the solar interface evaporator, which is conducive to the rapid extraction of water vapor generated by the photothermal film, avoids condensation on the top cover of the evaporator, and is also conducive to the transport of water in the water core and the photothermal film assembly.

[0023] (2) The inverted cone-shaped solar thermal film module design improves the solar energy receiving efficiency, utilizes the edge effect to promote rapid water transport and water impurity precipitation, solves the membrane blockage problem caused by solid precipitation, and extends the life of the membrane module.

[0024] (3) Use the heat dissipation of the refrigeration and condensation device to heat the raw water, increase the water supply temperature, promote water delivery and further increase the water evaporation rate.

[0025] (4) Using electric heating and air-assisted heating to maintain the high temperature of the solar evaporator is beneficial to accelerate water evaporation and increase the water purification production speed.

[0026] (5) Photovoltaic power supply is used in conjunction with solar thermal evaporation to solve the problem of continuous water purification under conditions of no light or poor light conditions, and to realize all-weather water purification production by fully utilizing solar energy.

[0027] The photothermal film module, water supply core, and other easily contaminated parts are all detachable, making them easy to clean and low in maintenance costs. They are suitable for treating a variety of raw water sources, including outdoor sewage, river and lake water, seawater, and saline water. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the solar water purification device of this utility model. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, this utility model provides a solar water purification device that can continuously and rapidly purify water. It mainly consists of a solar interface evaporator, a refrigeration condenser, and a photovoltaic power source.

[0032] The solar interface evaporator includes a hemispherical light-transmitting cover plate 1, a photothermal film assembly 6, a copper mesh frame 4, an electric auxiliary heating tube 5, a water supply core 7, a heat insulation layer 8, an air auxiliary heating tube 9, a water tank top frame 2, and a water tank 3, etc.

[0033] The light-transmitting cover 1 is made of transparent material, preferably a hemispherical structure, made of plexiglass, with an opening at the top for connecting to a steam outlet pipe. The water tank 3 is the raw water storage space, preferably made of non-toxic plastic materials such as PVC, PC, or PMMA that are resistant to temperatures above 85℃, integrally molded, and preferably cylindrical. The photothermal film assembly 6 is a composite film formed by coating commercially available photothermal conversion materials such as carbon black onto fiber material, processed into an inverted conical shape, and fixed to a copper mesh frame to form the membrane assembly. The water delivery core 7 is made of hydrophilic sponge-like material in a cylindrical shape, providing good water delivery capacity while simultaneously filtering particulate matter from the raw water. The heat insulation layer 8 is made of waterproof and heat-insulating foam material, processed into a cylindrical shape with a certain thickness and a central opening; the opening size is determined according to the size of the water delivery core. The electric auxiliary heating tube 5 is a ring-shaped copper tube encapsulating an electric heating element inside. The air auxiliary heating tube 9 is a ring-shaped or serpentine copper tube to provide better heating performance.

[0034] In this embodiment, the water tank 3 encapsulates the photothermal film assembly 6, copper mesh frame 4, electric auxiliary heating tube 5, water supply core 7, and heat insulation layer 8 in a cylindrical container in a top-to-bottom order. The container is supported by the water tank top frame 2 and is detachable, which facilitates cleaning of the water tank 3 and replacement of the water supply core 7.

[0035] Specifically, the upper part of the water tank 3 is covered by a light-transmitting cover plate 1, and the top outlet of the light-transmitting cover plate is connected to a steam outlet pipe 13. The photothermal film module 6 is arranged on the top of the water tank top frame 2, and a copper mesh frame 4 is arranged below it for support. The inverted conical bottom of the photothermal film module 6 is connected to the water supply core 7, and the middle part of the copper mesh frame 4 is fixed to the annular copper tube of the electric auxiliary heating pipe 5. The electric auxiliary heating pipe 5 is arranged on the upper part of the water tank 3, fixed to the water tank wall, and connected to the controller of the photovoltaic power supply 18 through a lead wire. A heat insulation layer 8 is arranged below the photothermal film module 6 and the electric auxiliary heating pipe 5. The top of the heat insulation layer 8 is at least 10mm away from the inverted conical bottom of the photothermal film module 6 and the bottom of the electric auxiliary heating pipe 5, and can be adjusted appropriately according to the water production capacity and size of the water purifier. A temperature sensor 21 is installed in the space above the heat insulation layer 8 to monitor the ambient temperature. The detachable water delivery core 7 passes through the central hole of the insulation layer 8 and is supported on the insulation layer 8 at the top. The upper part is connected to the bottom of the photothermal film assembly 6, and the lower part extends to the bottom of the water tank 3.

[0036] Water tank 3 serves as a raw water storage space, equipped with an inlet 10 and a drain 12. A level gauge 11 is installed on the side of the water tank. A top bracket 2 is installed on the upper part of water tank 3, connected by clamps. An air-assisted heating pipe 9 is arranged at the bottom of water tank 3. The air-assisted heating pipe 9 is fixed to the wall of water tank 3 via a heat dissipation duct 19 and an exhaust port 20. The heat dissipation duct 19 is connected to the heat dissipation sleeve 14 of the refrigeration condenser, and the exhaust port 20 is for venting.

[0037] The refrigeration condenser consists of a steam outlet pipe 13, a heat dissipation jacket 14, a thermoelectric cooler 15, a ventilation fan 16, and a clean water storage tank 17. The steam outlet pipe 13 is made of plexiglass and is connected to a translucent top cover 1 via a pipe flange, with its tail connected to the clean water storage tank 17. The clean water storage tank 17 stores clean water, and a water valve is installed at the bottom for water intake. A temperature sensor 22 is arranged inside the steam outlet pipe 13, and a thermoelectric cooler 15 (such as a Peltier cooler) is arranged on its outer wall. The steam outlet pipe 13 and the thermoelectric cooler 15 are arranged inside the heat dissipation jacket 14, with a reasonably designed airflow space. The heat dissipation jacket 14 is made of plexiglass or similar material and has an air inlet and an air outlet, with the air outlet connected to a cooling duct 19. To improve airflow, a ventilation fan 16 is installed at the air inlet.

[0038] Photovoltaic power supply 18 is a photovoltaic power generation and energy storage device. Its branches are connected to an electric auxiliary heating element 5, an air auxiliary heating element 9, and temperature sensors 21 and 22. The operating status of the electric auxiliary heating element 5, the thermoelectric cooler 15, and the ventilation fan 16 is controlled based on the temperature sensor signals. For example, when the temperature sensor 22 measures a temperature higher than 22 degrees Celsius, the thermoelectric cooler 15 is activated; when the measured temperature is lower than 14 degrees Celsius, the thermoelectric cooler 15 is deactivated. Similarly, when the temperature sensor 21 measures a temperature lower than 60 degrees Celsius, the electric auxiliary heating element 9 is activated; when the measured temperature is higher than 75 degrees Celsius, the electric auxiliary heating element 9 is deactivated.

[0039] Working principle of the device:

[0040] The solar interface evaporator receives sunlight, and the photothermal film module 6 converts light energy into heat energy, increasing the surface temperature of the photothermal film and promoting the evaporation of moisture from the film surface into water vapor. The water delivery core 7 filters particulate matter from the raw water in the water tank 3 and delivers it to the lower end of the inverted cone of the photothermal film module 6. As the water is transported upwards along the inverted cone, it is heated and evaporated by the photothermal film. Water-soluble substances such as inorganic salts and bacteria precipitate as solids due to water evaporation and accumulate along the upper edge of the inverted cone. More precipitated solids fall into the space of the insulation layer 8 and can be periodically removed. The insulation layer 8 separates the water tank storage space from the high-temperature interface evaporation space, reducing heat loss and increasing the temperature of the interface evaporation space.

[0041] Water vapor generated by interfacial evaporation is drawn into the steam outlet pipe 13 at the upper part of the hemispherical light-transmitting cover 1. A semiconductor cooling chip 15 installed on the outer wall of the steam outlet pipe 13 lowers the temperature inside the pipe to below 20 degrees Celsius, causing the water vapor to rapidly condense into liquid water, which is then stored in the clean water storage tank 17. The heat generated by the semiconductor cooling chip 15 is carried by airflow driven by the ventilation fan 16, and delivered through the heat dissipation duct 19 to the air-assisted heating pipe 9 at the bottom of the water tank. This heats the raw water in the tank, promoting water temperature rise and water transport, and reducing heat loss from the device.

[0042] Under conditions of poor solar radiation, such as cloudy days or nighttime, or during the startup of the solar water purification device, when the temperature of the insulation layer cannot reach 60 degrees Celsius, the electric auxiliary heating system will start. The photovoltaic power source supplies heat to the electric auxiliary heating tube, increasing the temperature of the space between the solar thermal film module and the insulation layer, promoting the evaporation process at the moisture interface, and enabling all-weather water purification production.

[0043] Raw water can be added according to the water tank level gauge 11, either all at once or continuously from the inlet. Wastewater remaining from the water purification process can be periodically discharged from the drain outlet 12. Solids precipitated in the insulation layer space can be periodically removed, and the water supply core 7 and the photothermal film assembly 6 can be periodically disassembled and cleaned.

[0044] The beneficial effects of this utility model are reflected in:

[0045] Using a semiconductor cooling chip to achieve rapid condensation of water vapor reduces the gas pressure of the solar interface evaporator, which is beneficial for the rapid extraction of water vapor generated by the photothermal film, preventing condensation on the top cover of the evaporator. It also facilitates the transport of water in the water core and the photothermal film module.

[0046] The inverted cone-shaped solar thermal film module design improves solar energy reception efficiency, utilizes the edge effect to promote rapid water transport and the precipitation of impurities in the water, solves the membrane blockage problem caused by solid precipitation, and extends the life of the membrane module.

[0047] The heat dissipation from the refrigeration and condensation unit is used to heat the raw water, increasing the supply water temperature, promoting water delivery, and further accelerating water evaporation. Electric and air-assisted heating are employed to maintain the high temperature of the solar evaporator, which helps to accelerate water evaporation and increase the rate of purified water production.

[0048] By using photovoltaic power in conjunction with solar thermal evaporation, continuous water purification can be achieved under conditions of no sunlight or poor lighting, making full use of solar energy to achieve all-weather water purification production.

[0049] The photothermal film module, water supply core, and other easily contaminated parts are all detachable, making them easy to clean and low in maintenance costs. They are suitable for treating a variety of raw water sources, including outdoor sewage, river and lake water, seawater, and saline water.

[0050] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A solar-powered water purification device, characterized in that, This includes solar interface evaporators, refrigeration condensers, and photovoltaic power sources; The solar interface evaporator includes a light-transmitting cover plate (1), a photothermal film assembly (6), a water supply core (7), a water tank (3), and an electric auxiliary heating tube (5). The water supply core (7) is placed in the water tank (3), and its upper part is connected to the bottom of the photothermal film assembly (6). The refrigeration condenser includes a steam outlet pipe (13), a semiconductor refrigeration chip (15), and a clean water storage tank (17). The top opening of the light-transmitting cover (1) is connected to a steam outlet pipe (13); the tail end of the steam outlet pipe (13) is connected to a clean water storage tank (17). The semiconductor cooling chip (15) is arranged on the outer wall of the steam outlet pipe (13) to condense the steam in the steam outlet pipe (13) into liquid water and store it in the clean water storage tank (17); The electric auxiliary heating tube (5) is disposed below the photothermal film assembly (6); The photovoltaic power source (18) is a photovoltaic power generation and energy storage device used to supply power to the electric auxiliary heating tube (5) and the semiconductor cooling chip (15).

2. The solar water purification device as described in claim 1, characterized in that, The light-transmitting cover (1) has a hemispherical structure and is made of plexiglass.

3. The solar water purification device as described in claim 1, characterized in that, The photothermal film assembly (6) is a composite film formed by coating a photothermal conversion material onto a fiber material, processing it into an inverted cone shape, and fixing it onto a copper mesh frame to form a film assembly.

4. The solar water purification device as described in claim 1, characterized in that, A heat insulation layer (8) is arranged at the bottom of the photothermal film assembly (6) and the electric auxiliary heating tube (5). The top of the heat insulation layer (8) is at least 10 mm away from the bottom of the photothermal film assembly (6) and the bottom of the electric auxiliary heating tube (5), dividing the water tank (3) into upper and lower spaces. The heat insulation layer (8) has a central hole for placing the water delivery core (7).

5. The solar water purification device as described in claim 4, characterized in that, The heat insulation layer (8) is made of waterproof and heat-insulating foam material and is processed into a cylindrical shape with a certain thickness.

6. The solar water purification device as described in claim 1, characterized in that, The solar interface evaporator also includes a water tank top frame (2). The photothermal film assembly (6), copper mesh frame (4), electric auxiliary heating tube (5), water delivery core (7), and heat insulation layer (8) are sequentially encapsulated in a cylinder and supported by the water tank top frame (2) to form a detachable structure.

7. The solar water purification device as described in claim 6, characterized in that, It also includes a first temperature sensor (21) and a second temperature sensor (22); the first temperature sensor (21) is disposed in the upper space of the heat insulation layer (8); the second temperature sensor is disposed inside the steam outlet pipe (13).

8. The solar water purification device as described in claim 1, characterized in that, The electric auxiliary heating tube (5) is an annular copper tube with an electric heating element encapsulated inside.

9. The solar water purification device as described in claim 1, characterized in that, The refrigeration condenser also includes a heat dissipation sleeve (14), the semiconductor cooling chip (15) is arranged in the steam outlet pipe (13) and arranged in the heat dissipation sleeve (14), the heat dissipation sleeve (14) is provided with an air inlet and an air outlet, the air inlet is provided with a ventilation fan (16), and the air outlet is connected to a heat dissipation duct (19). The solar interface evaporator also includes an air-assisted heating tube (9), which is arranged at the bottom of the water tank (3) and fixed to the wall of the water tank (3) through a heat dissipation duct (19) and an exhaust port (20). It is connected to the air outlet of the refrigeration condenser through the heat dissipation duct (19).

10. The solar water purification device as described in claim 9, characterized in that, The air-assisted heating tube (9) is a ring-shaped or serpentine copper tube.

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