Small seawater desalination device based on Miura folding and solar chimney effect

Abstract

The invention provides a small seawater desalination device based on Miura folding and a solar chimney effect. The small seawater desalination device comprises a seawater evaporation chamber, a heat collection shed, a chimney and a condensation water collection system, the heat collection shed is fixedly mounted above the seawater evaporation chamber and covers an opening in the upper surface of the seawater evaporation chamber; the heat collecting shed is of a flat plate structure with creases formed through a Miura folding method, and a plurality of Fresnel lenses are bonded to the heat collecting shed. A circle of annular chimney water collecting tank is mounted at the bottom of the chimney; the chimney is of a tubular structure with creases formed by a Miura folding method; the condensation water collecting system comprises a water collecting cover and an auxiliary collecting pipe; the water collecting cover is installed on the top of the chimney and comprises a shell, a condensation fine net and an annular water collecting groove. And the auxiliary collecting pipe is communicated with a drain hole in the chimney water collecting tank. The solar heat collection efficiency, the seawater evaporation rate and the water vapor guide efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater desalination, and in particular to a small seawater desalination device based on Miura folding and solar chimney effect. Background Art

[0002] In natural disasters and emergencies, water resources are often destroyed, and desalination facilities need to be built to solve the problem of water shortage. Traditional seawater desalination methods, such as reverse osmosis and multi-effect distillation, have low energy efficiency and bulky equipment. They are mainly suitable for large-scale applications, but are difficult to meet the needs of remote areas, emergency rescue and small-scale applications. Most small-scale seawater desalination devices on the current market rely on electric drive, but at sea, in disaster areas or remote areas, the power supply is often unstable or unavailable, which limits the practical application of these devices. Solar seawater desalination technology, as a low-energy, sustainable solution, has gradually attracted widespread attention. However, existing small-scale solar seawater desalination devices, such as the solutions disclosed in patents CN112573606A and CN110282681A, although they improve energy efficiency through solar heat collection, still face problems such as large size and the need for electric drive, which limits their application in portability and rapid deployment.

[0003] In addition, the chimney effect is used in the design of water vapor guidance. Although it can accelerate the flow of steam to a certain extent, the chimney structure in the existing technology usually fails to fully utilize the solar heating effect, resulting in low steam guidance efficiency, which affects the overall efficiency of seawater desalination. Existing seawater desalination devices mostly use simple evaporation chambers and condensation systems. These systems usually require large condensers or water tanks, resulting in excessive size and lack of portability and application flexibility. Therefore, there is an urgent need for a small seawater desalination device that combines high-efficiency solar heat collection, chimney effect guidance and condensation system to improve the overall energy efficiency of the device and meet the needs of portability and rapid deployment. Summary of the Invention

[0004] In response to the above-mentioned technical problems existing in existing small-scale seawater desalination devices, the present invention provides a small-scale seawater desalination device based on Miura folding and solar chimney effect, which is efficient, energy-saving, portable and independent of electric drive. The device combines a heat collection system using Miura folding structure and Fresnel lens technology, a system using chimney effect to achieve water vapor guidance, and the comprehensive application of high-efficiency condensed water collection technology to improve the solar heat collection efficiency, evaporation rate and water vapor guidance efficiency. The device can be widely used in scenarios such as seawater desalination, emergency water source guarantee, and water resource supply in remote areas, and is particularly suitable for environments with scarce resources, limited energy or high requirements for mobility and portability.

[0005] The technical means adopted in the present invention are as follows: A small seawater desalination device based on Miura folding and solar chimney effect, including a seawater evaporation chamber, a heat collection shed, a chimney and a condensation water collection system; The seawater evaporation chamber is a structure with an open upper surface, and the heat collection shed is fixedly installed above the seawater evaporation chamber and covers the opening on the upper surface of the seawater evaporation chamber; the heat collection shed is a flat plate structure with folds formed by the Miura folding method, and a plurality of Fresnel lenses are bonded to the heat collection shed; The bottom of the chimney is equipped with a ring-shaped chimney water collecting trough. The heat collecting shed is provided with a central hole. The chimney water collecting trough is fixedly installed in the central hole, so that the chimney is connected to the interior of the seawater evaporation chamber. The chimney is a tubular structure with folds formed by the Miura folding method. The condensation water collection system includes a water collection cover and an auxiliary collection pipe; the water collection cover is installed on the top of the chimney, and the water collection cover includes a shell, a condensation mesh and an annular water collection tank; the shell is sleeved on the outside of the condensation mesh; the water collection tank is installed at the top opening of the chimney, and the water collection tank is circumferentially provided with a circle of grooves with the openings facing upwards; the shell and the condensation mesh are both open at the bottom, and the openings face the chimney, and the bottoms of the shell and the condensation mesh are placed in the grooves; the water vapor entering the chimney condenses into liquid water on the condensation mesh; a drainage hole is provided on the side of the water collection tank, and the drainage hole is connected to the fresh water collector through a water pipe; one end of the auxiliary collection pipe is connected to the drainage hole on the chimney water collection tank, and the other end is connected to the fresh water collector.

[0006] Furthermore, the seawater evaporation chamber is connected to the heat collection shed by Velcro or snap fasteners; the chimney water collection trough is installed on the center hole on the heat collection shed by Velcro; the inner circle of the water collection trough is installed on the top opening of the chimney by Velcro or snap fasteners.

[0007] Furthermore, the shell and the condensation fine net are both conical structures, and both the shell and the condensation fine net are open at the large diameter end.

[0008] Furthermore, the Fresnel lens is bonded to the heat collection shed by UV glue or hot melt glue.

[0009] Furthermore, the ratio of the height to the diameter of the chimney is 12-12.5, and the ratio of the height of the chimney to the side length of the square heat collection shed is 0.58.

[0010] Furthermore, the inner surface of the chimney is smooth.

[0011] Furthermore, the seawater evaporation chamber, the chimney structure and the condensation water collection system are all made of corrosion-resistant materials; the heat collection shed is made of transparent or translucent heat-conductive materials; and the condensation fine mesh is made of high-efficiency heat exchange materials.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The small-scale seawater desalination device based on the Miura folding and solar chimney effect provided by the present invention combines the design of the Fresnel lens and the Miura folding structure to significantly improve the solar energy collection efficiency; the Fresnel lens can focus and concentrate a large amount of sunlight, ensuring that the heat collection effect can be maximized even under weak lighting conditions. The planar design of the Miura folding structure greatly increases the area of ​​the heat collection surface, further improving the heat collection capacity of the device in a limited space, making it particularly suitable for outdoor environments with limited space.

[0013] 2. The small seawater desalination device based on Miura folding and solar chimney effect provided by the present invention utilizes the chimney effect to effectively guide the rising of steam through the tubular Miura folding chimney. The air flow in the chimney accelerates the discharge of water vapor, thereby reducing the heat loss of steam during the rising process and improving the efficiency of the entire evaporation and condensation process.

[0014] 3. The small-scale seawater desalination device based on Miura folding and solar chimney effect provided by the present invention adopts high-efficiency heat exchange materials in the condensation and water collection system, which quickly cools the rising water vapor through the condensation fine mesh and effectively causes it to condense into water droplets. The design of the condensation fine mesh ensures a large contact area, quickly condenses water vapor into water droplets, and greatly improves the condensation efficiency; the design of the water collection tank effectively gathers the condensed water and flows smoothly into the water storage container through the drain outlet, ensuring the efficient collection and storage of fresh water; the integrated design of the condensation system and the water collection system avoids the loss of condensed water and ensures that every drop of condensed water can be effectively collected.

[0015] 4. The small-scale seawater desalination device based on Miura folding and solar chimney effect provided by the present invention has various components that adopt a folding design, which is convenient for rapid deployment and storage and has good portability; the modular design of the solar shed, chimney and condensation water collection system not only improves the overall portability of the device, but also allows users to flexibly combine and adjust according to actual needs; the folding design enables the device to be compactly stored when not in use, taking up little space and being easy to carry, making it particularly suitable for use in scenarios such as emergency rescue and outdoor adventures.

[0016] 5. The small seawater desalination device based on Miura folding and solar chimney effect provided by the present invention relies entirely on solar energy for operation and does not require external power support, which greatly improves its applicability in environments where electricity cannot be guaranteed. Whether in areas where power is cut off after natural disasters or in remote areas with unstable power supply, users can rely on solar energy to desalinate seawater and obtain the required fresh water resources, thereby solving the dependence problem of traditional electric-driven desalination devices and improving the independence and self-sufficiency of the equipment.

[0017] 6. The small seawater desalination device based on Miura folding and solar chimney effect provided by the present invention uses solar energy as an energy source, avoiding the situation where traditional desalination devices need to consume fossil energy and electricity, and has significant environmental advantages; and while achieving seawater desalination, the device does not produce any harmful exhaust gas or pollutants, and is green and environmentally friendly; the device uses solar energy as power, which not only saves energy and reduces emissions, but also reduces dependence on traditional electricity resources in emergency situations, providing a sustainable water supply for emergency rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a schematic structural diagram of the small seawater desalination device of the present invention.

[0020] Figure 2 This is a schematic structural diagram of the water collecting cover of the present invention.

[0021] Figure 3 This is a schematic diagram of the chimney structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the chimney water collection trough structure of the present invention.

[0023] Figure 5 This is a structural schematic diagram of the solar collector shed described in the present invention.

[0024] In the figure: 1. Seawater evaporation chamber; 2. Heat collection shed; 3. Chimney; 31. Chimney water collection tank; 4. Water collection cover; 41. Shell; 42. Condensation fine mesh; 43. Water collection tank; 5. Auxiliary collection pipe; 6. Fresh water collector. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0030] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0031] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0032] Example 1 like Figure 1-5 As shown, the present invention provides a small seawater desalination device based on Miura folding and solar chimney effect, including a seawater evaporation chamber 1, a heat collection shed 2, a chimney 3 and a condensation water collection system; The seawater evaporation chamber 1 is a structure with an open upper surface, and the heat collecting shed 2 is fixedly installed above the seawater evaporation chamber 1 and covers the opening on the upper surface of the seawater evaporation chamber 1; the heat collecting shed 2 is a flat plate structure with folds formed by the Miura folding method, and a plurality of Fresnel lenses are bonded to the heat collecting shed 2. The heat collecting shed 2 is used to collect solar energy through the Fresnel lenses, so that the seawater in the seawater evaporation chamber 1 evaporates into water vapor; the heat collecting shed 2 utilizes the focusing effect of multiple Fresnel lenses to refract sunlight and concentrate sunlight into the seawater evaporation chamber 1, thereby improving the heat collection efficiency of solar energy, promoting the evaporation of seawater in the seawater evaporation chamber 1, and enabling the device to work efficiently in a limited area; the heat collecting shed 2 can be installed in a smaller area The solar energy can be efficiently collected and concentrated on the installation area, and can adapt to the working requirements in low-light environments. The solar collecting shed 2 is designed as a flat plate structure with folds formed by the Miura folding method. It can increase the heat collection area by unfolding, ensuring that the seawater can be effectively heated even in insufficient sunlight. It is easy to fold, transport, install and store, and is suitable for use in different environments and space conditions. The solar collecting shed 2 focuses and beams sunlight through the combination of Fresnel lens and Miura folding structure, so that it can be concentrated on the surface of the seawater evaporation chamber 1, maximizing the heat collection efficiency. The folding design of the solar collecting shed 2 not only enables it to effectively collect sunlight when in use, but also allows it to be easily stored when not in use, greatly improving its portability and adaptability. The bottom of the chimney 3 is provided with a ring-shaped chimney water collecting trough 31. The heat collecting shed 2 is provided with a central hole. The chimney water collecting trough 31 is fixedly installed in the central hole, so that the chimney 3 is connected with the inside of the seawater evaporation chamber 1. The water vapor generated by the evaporation of seawater in the seawater evaporation chamber 1 enters the chimney 3. The chimney 3 can use the air heated by solar energy to form a chimney effect, and guide the evaporated water vapor to the condensation collection system for cooling and condensation. The chimney 3 is a tubular structure with folds formed by the Miura folding method. The chimney 3 serves as a channel for steam guidance. The tubular Miura folding structure design not only effectively reduces heat loss but also provides sufficient height for water vapor to flow upward rapidly. The chimney effect enables steam to rise rapidly through the longitudinally extended chimney 3, thereby accelerating the discharge of water vapor and reducing heat loss during the steam rise. This design significantly improves the water vapor guidance efficiency, ensuring that the water vapor generated by the seawater evaporation chamber can be quickly discharged and enter the condensation water collection system for condensation. In addition, the chimney 3 can be extended or folded as needed, which not only improves the rising efficiency of the steam, but also enhances the portability of the entire device. The condensation water collection system includes a water collection cover 4 and an auxiliary collection pipe 5; the water collection cover 4 is installed on the top of the chimney 3, and the water collection cover 4 includes a shell 41, a condensation fine mesh 42 and an annular water collection tank 43; the shell 41 is sleeved on the outside of the condensation fine mesh 42; the water collection tank 43 is installed on the top opening of the chimney 3, and the water collection tank 43 is provided with a circle of grooves with openings facing upwards along the circumference; the shell 41 and the condensation fine mesh 42 are both open at the bottom, and the openings face the chimney 3, and the bottoms of the shell 41 and the condensation fine mesh 42 are both placed in the grooves; the water vapor entering the chimney 3 condenses into liquid water on the condensation fine mesh 42, and the water collection tank 43 is used to collect the liquid water condensed on the condensation fine mesh 42, and a drainage hole is provided on the side of the water collection tank 43, and the drainage hole is connected to the fresh water collector 6 through a water pipe. ; One end of the auxiliary collection pipe 5 is connected to the drainage hole on the chimney water collecting trough 31, and the other end is connected to the fresh water collector 6. The chimney water collecting trough 31 is used to collect liquid water flowing down the wall of the chimney 3 and transport it to the fresh water collector 6 through the auxiliary collection pipe 5. The chimney water collecting trough 31 cooperates with the water collecting cover 4 to achieve dual-effect collection of fresh water, thereby improving the collection efficiency; the condensation water collecting system increases the contact surface by setting the condensation fine mesh 42, ensuring that water vapor can condense quickly and converge into the fresh water collector 6 through the water collecting trough 43; the design of the water collecting trough 43 ensures the efficient collection of condensed water, while avoiding the phenomenon of water loss, ensuring that every drop of condensed water can be effectively stored; the condensation water collecting system integrates condensation and water collection functions to ensure that the water vapor condensation efficiency and water collection efficiency are maximized.

[0033] The small seawater desalination device of the present invention is miniaturized and portable as a whole, easy to carry and install, suitable for remote areas or small-scale seawater desalination needs, can operate stably under low cost and low energy consumption conditions, and has strong practicality.

[0034] Furthermore, the seawater evaporation chamber 1 is connected to the heat collection shed 2 by Velcro or snap fasteners, which is convenient for disassembly and assembly; the chimney water collection trough 31 is installed on the center hole on the heat collection shed 2 by Velcro; the inner circle of the water collection trough 43 is installed on the top opening of the chimney 3 by Velcro or snap fasteners.

[0035] Furthermore, the shell 41 and the condensation fine net 42 are both conical structures, and both the shell 41 and the condensation fine net 42 are open at the large diameter end.

[0036] Furthermore, the Fresnel lens is bonded to the heat collecting shed 2 by UV glue or hot melt glue.

[0037] Furthermore, the seawater evaporation chamber 1 is located at the bottom of the device, and is used to provide support for the heat collection shed 2, the chimney 3 and the condensation and water collection system. As the core part of the entire desalination system, it is responsible for accommodating seawater and using solar energy to heat the seawater, causing it to evaporate into water vapor.

[0038] Furthermore, the seawater evaporation chamber 1, the chimney structure 3 and the condensation water collection system are all made of corrosion-resistant materials, such as PET film, which can be used stably for a long time in a seawater environment, ensuring the durability and stability of the device; the heat collection shed 2 is made of transparent or translucent thermal conductive materials, such as PET film, which can maximize the sunlight penetration and heat collection efficiency.

[0039] Furthermore, the ratio of the height to the diameter of the chimney 3, which makes the water vapor guiding efficiency higher, is 12-12.5, and the ratio of the height of the chimney 3 to the side length of the square heat collecting shed 2 is 0.58; the height and extensibility of the chimney 3 further enhance the steam guiding capacity of the device.

[0040] Furthermore, the inner surface of the chimney 3 is smooth, which helps the steam to rise quickly.

[0041] Furthermore, the condensation mesh 42 is made of a high-efficiency heat exchange material, such as a copper-based condensation mesh, which can quickly reduce the temperature of water vapor when it flows in, causing the water vapor to condense into water droplets.

[0042] During operation, after absorbing solar radiation, the solar energy collecting shed 2 irradiates the sunlight to the surface of the seawater evaporation chamber 1 through its focusing system, so that the seawater is heated to the evaporation temperature, the water in the seawater evaporates rapidly, and the water vapor rises rapidly through the chimney 3. Due to the rising effect of the hot air flow caused by the temperature difference, the water vapor flows upward rapidly in the chimney 3, reducing heat loss and improving the steam guidance efficiency; the water vapor will eventually enter the water collection cover 4 for condensation, and the condensation fine mesh 42 will quickly cool the water vapor to condense it into water droplets. The water droplets flow along the condensation fine mesh 42 into the surrounding water collection tanks 43, and finally flow into the fresh water collector 6 next to the device along the water guide pipe connected to the water collection tank 43. The auxiliary collection pipe 5 extends into the connection between the chimney 3 and the solar energy collecting shed 2, fits the solar energy collecting shed 2, and is connected to the fresh water collector, which can collect and guide the wall-hanging condensed water flowing down from the inside of the chimney 3.

[0043] The seawater desalination device of the present invention combines efficient solar heat collection, chimney effect to guide steam to rise, and an efficient condensate collection system, aiming to provide a portable, environmentally friendly, and electricity-free seawater desalination solution. The greatest advantage of this device is that it does not rely on external electricity, but relies entirely on solar energy to provide the required energy. Therefore, it is particularly suitable for remote areas with unstable power supply or post-disaster emergency rescue. The modular design of the device enables the various parts to be flexibly combined and adjusted to meet the requirements of different environments and usage needs. The small-scale seawater desalination device described in the present invention can efficiently desalinate seawater through the synergistic effect of the heat collection shed, seawater evaporation chamber, chimney and condensate collection system, and does not rely on electric drive. It is suitable for outdoor adventures, emergency rescue and other scenarios.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A small seawater desalination device based on Miura folding and solar chimney effect, characterized in that: It includes seawater evaporation chamber, heat collection shed, chimney and condensation water collection system; The seawater evaporation chamber is a structure with an open upper surface, and the heat collection shed is fixedly installed above the seawater evaporation chamber and covers the opening on the upper surface of the seawater evaporation chamber; the heat collection shed is a flat plate structure with folds formed by the Miura folding method, and a plurality of Fresnel lenses are bonded to the heat collection shed; The bottom of the chimney is equipped with a ring-shaped chimney water collecting trough. The heat collecting shed is provided with a central hole. The chimney water collecting trough is fixedly installed in the central hole, so that the chimney is connected to the interior of the seawater evaporation chamber. The chimney is a tubular structure with folds formed by the Miura folding method. The condensation water collection system includes a water collection cover and an auxiliary collection pipe; the water collection cover is installed on the top of the chimney, and the water collection cover includes a shell, a condensation mesh and an annular water collection tank; the shell is sleeved on the outside of the condensation mesh; the water collection tank is installed at the top opening of the chimney, and the water collection tank is circumferentially provided with a circle of grooves with the openings facing upwards; the shell and the condensation mesh are both open at the bottom, and the openings face the chimney, and the bottoms of the shell and the condensation mesh are placed in the grooves; the water vapor entering the chimney condenses into liquid water on the condensation mesh; a drainage hole is provided on the side of the water collection tank, and the drainage hole is connected to the fresh water collector through a water pipe; one end of the auxiliary collection pipe is connected to the drainage hole on the chimney water collection tank, and the other end is connected to the fresh water collector.

2. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The seawater evaporation chamber is connected to the heat collection shed through Velcro or snap fasteners; the chimney water collection trough is installed on the center hole on the heat collection shed through Velcro; the inner circle of the water collection trough is installed on the top opening of the chimney through Velcro or snap fasteners.

3. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The shell and the condensation fine net are both conical structures, and both the shell and the condensation fine net are open at the large diameter end.

4. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The Fresnel lens is bonded to the heat collecting shed by UV glue or hot melt glue.

5. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The ratio of the height to the diameter of the chimney is 12-12.5, and the ratio of the height of the chimney to the side length of the square heat collection shed is 0.

58.

6. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The inner surface of the chimney is smooth.

7. The small seawater desalination device based on Miura folding and solar chimney effect according to claim 1 is characterized in that: The seawater evaporation chamber, the chimney structure and the condensation water collection system are all made of corrosion-resistant materials; the heat collection shed is made of transparent or translucent heat-conductive materials; and the condensation fine mesh is made of high-efficiency heat exchange materials.

Images