Low-energy-consumption multi-type water quality purification system based on thermoelectric effect

Abstract

The invention relates to the technical field of water quality purification treatment equipment, and provides a thermoelectric effect-based low-energy-consumption multi-type water quality purification system which comprises an evaporation device and a cooling device, and the evaporation device is provided with an accommodating space and a steam outlet; the cooling device comprises an outer shell, a heat exchange assembly and a direct cooling assembly, the outer shell is provided with a mounting space, and the heat exchange assembly and the direct cooling assembly are arranged in the mounting space; the inlet end of the heat exchange assembly is in fluid communication with the steam outlet through a conveying pipeline, and a water outlet is formed in the bottom of the heat exchange assembly. The direct cooling assembly comprises an inner shell, an inner cavity is formed in the inner shell, the inner cavity is divided into a condensation cavity and a heating cavity through a partition plate, and a thermoelectric module is arranged on the partition plate. Evaporation of water to be treated is achieved through the evaporation device, cooling is achieved through steam in the cooling device, part of low-temperature steam is subjected to backflow circulation, purification treatment of water is achieved, the treatment efficiency is improved, and the complexity of system setting and the preparation cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a low-energy consumption multi-type water purification system based on thermoelectric effect. Background Art

[0002] In order to cope with the problem of water shortage, water resources are usually treated accordingly. Currently, the water purification technologies available on the market mainly include traditional physical filtration, chemical treatment, biological treatment, electrochemical treatment, thermal treatment and reverse osmosis to achieve the recycling of water resources.

[0003] Traditional physical filtration methods, such as sand filtration, carbon filtration, and membrane filtration, remove suspended matter, sediment, and some microorganisms from water. While simple and low-cost, these methods are limited in their effectiveness at removing dissolved pollutants and hazardous chemicals and are prone to secondary pollution. Chemical treatment methods, such as chlorine disinfection, ozone treatment, and flocculation sedimentation, remove harmful substances from water through chemical reactions. While effective in sterilizing and removing organic pollutants, they can easily lead to residual chemicals in the water, potentially adversely affecting human health. They also consume a lot of energy and are complex to operate. Biological treatment methods, such as activated sludge and biofilm processes, use microorganisms to degrade organic pollutants in water. These methods are suitable for treating large volumes of organic wastewater and offer high treatment efficiency, but they require a strict operating environment and conditions, require long treatment cycles, and cannot completely remove all harmful substances. Electrochemical methods, such as electrolysis, electrocoagulation, and electroadsorption, remove pollutants from water. They can effectively remove a wide range of pollutants and are relatively simple to operate. However, these methods are costly, energy-intensive, and ineffective at treating high concentrations of pollutants. Thermal methods, such as distillation and multiple-effect evaporation, produce high-purity purified water by heating water and condensing it back into the water. However, these methods consume extremely high amounts of energy and are therefore suitable for water purification in special circumstances. Reverse osmosis utilizes reverse osmosis membranes under high pressure to isolate ions, organic matter, and microorganisms from water, achieving highly effective purification. However, these methods consume high amounts of energy, have high membrane material costs, and are prone to producing concentrated wastewater, requiring a complex pretreatment system.

[0004] Although the above methods can achieve water purification to varying degrees, they all have problems such as high energy consumption, limited treatment effects, and high costs, making it difficult to fully meet the needs of modern society for low-energy, multi-type water purification. Summary of the Invention

[0005] The present invention provides a low-energy consumption multi-type water purification system based on thermoelectric effect, which is used to solve the defects of the water purification device in the prior art, such as complex structure, high production cost and high energy consumption.

[0006] The present invention provides a low-energy consumption multi-type water purification system based on the thermoelectric effect, comprising: an evaporation device and a cooling device; the evaporation device is provided with a storage space for storing water to be treated, and the evaporation device is provided with a steam outlet; the cooling device comprises an outer shell, a heat exchange component and a direct cooling component, the outer shell is provided with an installation space, and the heat exchange component and the direct cooling component are both arranged in the installation space; wherein, the heat exchange component comprises a finned heat exchanger, the inlet end of the finned heat exchanger is in fluid communication with the steam outlet through a delivery pipeline, and the axial bottom of the finned heat exchanger is provided with a drain port for discharging condensed water; the direct cooling The component includes an inner shell, which has an inner chamber, and a partition plate is fixedly provided in the inner chamber, and the partition plate divides the inner chamber into an independent condensing chamber and a heating chamber, and a thermoelectric module is provided on the partition plate, and the heating end of the thermoelectric module is connected to the partition plate, and the cooling end of the thermoelectric module is located in the condensing chamber; at least part of the main body of the fin heat exchanger is located in the condensing chamber, and the axial top of the fin heat exchanger is provided with a connecting port, and the connecting port is connected to the fluid of the heating chamber through a connecting pipe, and the axial bottom of the heating chamber is provided with a return pipe, and the return pipe is connected to the fluid of the accommodating space.

[0007] The low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention further includes a water storage tank, which is arranged at the bottom of the outer shell in the axial direction and is fluidically connected to the finned heat exchanger.

[0008] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, the water tank is provided with a drain pipe, a first return bend and a second return bend, the drain pipe is connected to the fluid of the water tank, the first return bend is connected to the fluid of the fin heat exchanger, the second return bend is connected to the fluid of the inner chamber, and the first return bend and the second return bend are both used to transport condensed water to the water tank.

[0009] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, the evaporation device is provided with a condensation top cover, the condensation top cover is arranged at the axial top of the accommodating space, and the condensation top cover is used to directly cool part of the steam.

[0010] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, the evaporation device is also provided with a reflux groove, which is arranged at the circumferential edge of the bottom of the condensation top cover in the vertical direction, and a guide pipe is provided on the reflux groove, which is fluidically connected to the reflux groove.

[0011] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, the condensation top cover includes a first side wall and a second side wall arranged opposite to each other, and side sealing plates connected to both sides of the first side wall and the second side wall. One end of the first side wall is connected to one end of the second side wall, and the first side wall is arranged at an angle. The second side wall is constructed as an arc-shaped structure to enclose a cover structure with a fan-shaped cross-section.

[0012] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, the finned heat exchanger includes an inner finned tube and an outer finned tube, the outer finned tube is sleeved on the outside of the inner finned tube, and a heat exchange chamber is formed between the inner finned tube and the outer finned tube, and the outer finned tube is provided with a connecting hole on the tube wall in the axial upper part, and the connecting hole is connected to the steam outlet fluid through a conveying pipeline; the inner finned tube is provided with a connecting port at the axial bottom, and the connecting port is connected to the heat exchange chamber; wherein, the outer finned tube is provided with a drainage hole for discharging condensed water at the axial bottom, and the drainage hole is used to discharge the condensed water in the outer finned tube.

[0013] According to the low-energy consumption multi-type water purification system based on thermoelectric effect provided by the present invention, a first sealing rubber gasket is provided at one end of the connecting pipe connected to the connecting port, and a second sealing rubber gasket is provided at one end of the connecting pipe connected to the heating chamber.

[0014] According to the low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention, the bottom of the temperature-raising chamber is provided with a bucket-shaped structure that gradually shrinks along the axial direction.

[0015] The low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention realizes the evaporation of the water to be treated through an evaporation device to form steam, cools the steam in a cooling device and circulates part of the low-temperature steam back, thereby achieving water purification treatment, improving treatment efficiency, and reducing the complexity and cost of system settings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to 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 work.

[0017] Figure 1 This is a schematic diagram of the overall system connection of the low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention.

[0018] Figure 2This is a schematic diagram of the internal structure of the cooling device in the low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention.

[0019] Figure 3 It is a structural schematic diagram of the heat exchange component in the low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention.

[0020] Figure 4 It is a structural schematic diagram of the direct cooling component in the low-energy consumption multi-type water purification system based on the thermoelectric effect provided by the present invention.

[0021] Reference numerals: 10. Evaporation device; 11. Accommodation space; 12. Steam outlet; 13. Condensation top cover; 131. First side wall; 132. Second side wall; 14. Reflux groove; 15. Guide pipe; 16. Delivery pipeline; 20. Cooling device; 21. Outer shell; 211. Installation space; 22. Heat exchange component; 221. Inner finned tube; 222. Outer finned tube; 223. Connection port; 23. Direct cooling component; 231. Inner shell; 232. Partition plate; 233. Condensation chamber; 234. Warming chamber; 235. Thermoelectric module; 236. Bucket-shaped structure; 24. Connecting pipe; 25. Reflux pipe; 30. Water storage tank; 31. First reflux bend; 32. Second reflux bend. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of explaining the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0027] The following combination Figures 1-4The present invention describes a low-energy consumption multi-type water purification system based on the thermoelectric effect, which includes an evaporation device 10 and a cooling device 20. The evaporation device 10 is provided with a storage space 11 for storing water to be treated, and the evaporation device 10 is provided with a steam outlet 12; the cooling device 20 includes an outer shell 21, a heat exchange component 22 and a direct cooling component 23. The outer shell 21 has an installation space 211, and the heat exchange component 22 and the direct cooling component 23 are both arranged in the installation space 211; wherein the heat exchange component 22 includes a finned heat exchanger, the inlet end of the finned heat exchanger is fluidly connected to the steam outlet 12 through a conveying pipeline 16, and the axial bottom of the finned heat exchanger is provided with a drain port for discharging condensed water; the direct cooling component 23 includes an inner housing 231, which contains an inner chamber. A partition plate 232 is fixedly mounted within the inner chamber, dividing the inner chamber into an independent condensing chamber and a heating chamber 234. A thermoelectric module 235 is mounted on the partition plate 232, with the heating end of the thermoelectric module 235 connected to the partition plate 232, and the cooling end of the thermoelectric module 235 located within the condensing chamber. At least a portion of the main body of the finned heat exchanger is located within the condensing chamber, and a connection port 223 is provided at the axial top of the finned heat exchanger. The connection port 223 is in fluid communication with the heating chamber 234 via a connecting pipe 24. A return pipe 25 is provided at the axial bottom of the heating chamber 234, in fluid communication with the accommodation space 11. When treating complex water conditions, it is necessary to effectively treat the water quality to meet usable water standards. In this embodiment, the water to be treated is evaporated by the evaporation device 10 to form steam, and the steam is cooled in the cooling device 20 and part of the low-temperature steam is circulated back, thereby achieving water purification, improving the treatment efficiency, and reducing the complexity and cost of the system setting.

[0028] The evaporation device 10 can employ a conventional evaporation device 10 body, with a steam outlet 12 provided at a suitable location on a side wall of the evaporation device 10. The steam outlet 12 is used to partially discharge the steam. The steam outlet 12 is connected to the cooling device 20 and can cool the steam through the cooling device 20, thereby achieving efficient condensation of the steam and effective water quality treatment. The finned heat exchanger can employ a tubular finned heat exchanger commonly used in venues. The finned heat exchanger has an inlet for inputting steam (heat source), a connection port 223 for discharging a portion of the low-temperature steam, and a drain port for timely discharge of condensed steam. The finned heat exchanger can increase the contact area with the internal chamber environment, thereby improving heat exchange efficiency.

[0029] Direct cooling assembly 23 achieves both heating and cooling through thermoelectric modules 235, providing a heat source for heating chamber 234 and a cooling source for the condensing chamber. This configuration simplifies the control system, making the overall device simpler and reducing setup costs. Part of the main body of the finned heat exchanger is located within the condensing chamber. The thermoelectric modules 235 within the condensing chamber provide a cooling source, thus forming a heat exchange system. Water droplets precipitate on the external fins of the finned heat exchanger, which then collect and flow into the condensing chamber.

[0030] In this embodiment, in order to facilitate the discharge of condensed water in the condensation chamber, a drainage through hole is opened on the bottom wall of the condensation chamber, and the drainage through hole can realize the timely discharge of condensed water.

[0031] Specifically, the evaporation device 10 can use a variety of heating methods to heat the water to be treated. For example, electric heating can be used to heat the wastewater to be treated in the receiving space 11 and eventually heat the water to be treated into steam.

[0032] In some preferred examples, clean energy can be used for evaporation operations. For example, clean energy such as solar energy and geothermal energy can be used to evaporate sewage. Most of the evaporated steam enters the finned heat exchanger through the delivery pipeline 16, and heat is exchanged through the finned heat exchanger, thereby cooling the steam and condensing on the fins. The condensed water can be discharged promptly through the drain port. The cooled steam is guided to the heating chamber 234 through the connecting pipe 24, and heated by the heating chamber 234. After heating, high-temperature, low-humidity steam is obtained and refluxed to the evaporation device 10, thereby circulating and effectively purifying the water quality.

[0033] In this embodiment, the purified water condensed from the fin heat exchanger and the condensation chamber can be collected and stored for subsequent use. For example, a water reservoir can be set up externally and the treated water can be piped into the reservoir to achieve storage of the purified water.

[0034] Specifically, the evaporation device 10 is a solar evaporation device 10, which includes a solar collector. The solar collector is extended in a long direction, so that the solar collector has sufficient contact area with the water to be treated, which facilitates efficient heating of the water to be treated. By limiting it to a solar evaporation device 10, overall energy consumption can be further reduced.

[0035] It is understandable that if Figure 1 、 Figure 4As shown, in this embodiment, the arrangement of the heat exchange component 22 and the direct cooling component 23 enables steam to be processed step by step. That is, initially, the water to be treated is heated by the evaporator to high-temperature, high-humidity steam, which can be efficiently condensed by the finned heat exchanger. The steam condensed by the heat exchange component 22 is low-temperature, low-humidity steam, which is guided into the heating chamber 234. The heating chamber 234 and the condensation chamber 233 are separated by a partition plate 232, and the thermoelectric module 235 is used to simultaneously heat the low-temperature, low-humidity steam and exchange heat with the high-temperature, high-humidity steam. This can fully utilize the cold source to achieve heat exchange, fully utilize the heat source to achieve preheating of the evaporation device 10, avoid waste of the heat source and cold source in the entire system, improve the utilization rate of the heat source and cold source, and reduce the energy consumption of the entire system.

[0036] like Figure 1 As shown in the above embodiment, evaporation device 10 is provided with a condensation cover 13, which is located at the axial top of storage space 11. Condensation cover 13 is used to directly cool a portion of the steam. After evaporation, the water to be treated in storage space 11 rises. A portion of the rising steam enters cooling device 20 through delivery pipeline 16 for water treatment and circulation, while the remaining portion is directly condensed by condensation cover 13, thereby improving water treatment efficiency.

[0037] The evaporator is a solar evaporator, the condensation cover 13 of the evaporator is fixedly connected to the main structure of the evaporation device 10, and the solar heat energy is transferred to the water to be treated through the solar collector, so that the water to be treated evaporates.

[0038] Specifically, a storage space 11 for storing the water source to be treated is formed in the main structure of the evaporator. The length of the storage space 11 along the length direction is much greater than the width of the storage space 11. This arrangement enables the water to be treated to have a larger contact area with the solar collector, thereby achieving efficient evaporation.

[0039] It is understood that in this embodiment, there is a certain distance between the condensation cover 13 and the water body to be treated, and the outer wall surface of the condensation cover 13 is in contact with the external environment. This method can create a temperature difference between the condensation cover 13 and the steam inside, thereby allowing some steam to condense on the condensation cover 13, thereby improving the efficiency of water treatment. Moreover, in this embodiment, the provision of the condensation cover 13 further refines the efficiency of the graded steam treatment, allowing some steam to be condensed directly through the condensation cover 13.

[0040] like Figure 1As shown, in some embodiments, the water purification system further includes a water tank 30, which is located at the axial bottom of the outer shell 21 and is in fluid communication with the finned heat exchanger. As the cooling device 20 cools the steam, water droplets continuously precipitate, gradually accumulating to form a large amount of condensed water. In this embodiment, by disposing the water tank 30 at the bottom of the outer shell 21, the condensed water is directly stored in the water tank 30, making the overall structure more compact and improving the steam circulation efficiency.

[0041] The fixed connection between the water tank 30 and the outer shell 21 allows the steam to be discharged promptly after condensation and collected by the water tank 30, which is conducive to the utilization of the condensed water. When the condensed water is utilized, a drainage pipe can be provided on the water tank 30, and a drainage pump can be provided on the drainage pipe or the condensed water can be discharged based on the height difference.

[0042] It is understandable that if the condensed water cannot be discharged in time, it will affect the flow of steam, thereby reducing the steam circulation efficiency. In this embodiment, by providing a water storage tank 30 at the bottom of the outer shell 21, the condensed water can be discharged in time, avoiding the impact of the condensed water on the steam circulation.

[0043] When setting specific settings, such as Figure 1 As shown, the water tank 30 is provided with a drain pipe, a first return elbow 31, and a second return elbow 32. The drain pipe is in fluid communication with the water tank 30, the first return elbow 31 is in fluid communication with the finned heat exchanger, and the second return elbow 32 is in fluid communication with the inner chamber. Both the first return elbow 31 and the second return elbow 32 are used to transport condensed water into the water tank 30. During the specific connection, the condensed water in the heat exchange assembly 22 and the condensation chamber 233 needs to be discharged. In this embodiment, the provision of two return elbows can achieve timely discharge of condensed water, and the provision of the elbows can prevent the outflow of wet cold air.

[0044] Specifically, the first return bend 31 and the second return bend 32 each include a 180° bend relative to the tube body, located within the water tank 30. This redirection of gas flow increases flow resistance, effectively preventing gas from escaping after heat exchange and cooling by the thermoelectric module 235, further reducing energy consumption.

[0045] It is understood that the water tank 30 stores condensed water and can be drained through the drain pipe for easy use. The first return bend 31 and the second return bend 32 are provided to drain the condensed water and guide it to the water tank 30, while also preventing the outflow of cold, moist air after heat exchange.

[0046] In combination with the above embodiments, Figure 1As shown, in order to collect condensed water, the evaporation device 10 is further provided with a reflux groove 14, which is provided at the circumferential edge of the bottom of the condensation top cover 13 in the vertical direction. A guide pipe 15 is provided on the reflux groove 14, and the guide pipe 15 is in fluid communication with the reflux groove 14. During the step-by-step treatment of steam, part of the steam is first condensed through the condensation top cover 13. The provision of the reflux groove 14 in this embodiment can effectively collect the condensed water on the condensation top cover 13, thereby improving treatment efficiency.

[0047] Specifically, the reflux groove 14 is annular and located on the bottom edge of the condensation cover 13. After condensation occurs on the condensation cover 13, the water droplets flow along the inner wall of the condensation cover 13 and are ultimately collected by the reflux groove 14. Furthermore, the flow guide pipe 15 is in fluid communication with the water storage tank 30. By connecting the flow guide pipe 15 with the water storage tank 30, the condensed water can be discharged in a timely manner, avoiding affecting the continued condensation of steam.

[0048] It is understandable that most of the condensed water on the condensation top cover 13 will flow along its inner wall surface. This embodiment achieves effective collection of condensed water by setting a reflux groove 14 at the bottom, and can discharge it into the water storage tank 30 in time, which can improve the circulation condensation efficiency of steam.

[0049] In combination with the above embodiments, Figure 1 As shown, in order to facilitate steam condensation and the collection of condensed water, the condensation top cover 13 includes a first side wall 131 and a second side wall 132 that are arranged opposite to each other, and side sealing plates connected to both sides of the first side wall 131 and the second side wall 132. One end of the first side wall 131 is connected to one end of the second side wall 132, and the first side wall 131 is arranged at an angle, and the second side wall 132 is constructed as an arc-shaped structure to enclose a cover structure with a fan-shaped cross-section. Condensed water needs to flow smoothly during the flow process to avoid a large amount of condensed water dripping and causing collection failure. In this embodiment, by setting the opposite side walls to be inclined and arc-shaped, it can facilitate the timely flow of condensed water and enable it to be collected and gathered through the reflux groove 14.

[0050] Specifically, the first side wall 131, the second side wall 132, and the side sealing plate can seal the top of the evaporation device 10 to prevent steam leakage. Furthermore, the inner surfaces of the first side wall 131, the second side wall 132, and the side sealing plate are all smooth, which can facilitate the flow of condensed water and improve the circulation efficiency of steam.

[0051] It can be understood that the fan-shaped cover structure allows the steam to directly contact the first side wall 131 and the second side wall 132, thereby facilitating the condensation of the steam and improving the processing efficiency of the system.

[0052] In some embodiments, such as Figure 1 、 Figure 3As shown, the arrows in the figure indicate the direction of steam flow. The finned heat exchanger includes inner finned tubes 221 and outer finned tubes 222. The outer finned tubes 222 are sleeved on the outside of the inner finned tubes 221, forming a heat exchange chamber between the inner finned tubes 221 and the outer finned tubes 222. The outer finned tubes 222 have a connecting hole on the axial upper tube wall, which is fluidically connected to the steam outlet 12 through the conveying pipeline 16. The inner finned tubes 221 have a connecting port on the axial bottom, which is connected to the heat exchange chamber. The outer finned tubes 222 have a drain hole on the axial bottom for discharging condensed water. The drain hole is used to drain condensed water from the outer finned tubes 222. Steam needs to exchange heat with the outside during its flow, thereby reducing the steam temperature and precipitating water droplets. In this embodiment, by disposing the inner fin tube 221 and the outer fin tube 222 , the flow path of the steam can be extended, and the contact time with the cold source environment of the condensation chamber 233 can be increased, thereby improving the condensation efficiency.

[0053] Specifically, a drain port is provided at the bottom of the outer finned tube 222, which is fluidically connected to the water storage tank 30 via the first return bend 31. A drain hole is provided at the bottom of the condensation chamber 233, which is circulated and connected to the water storage tank 30 via the second return bend 32, thereby enabling timely discharge of condensed water. Furthermore, by positioning the inlet end of the inner finned tube 221 at the bottom, steam first flows downward from the top of the heat exchange chamber, exchanging heat with the cold source environment within the condensation chamber 233 during the flow process. After reaching the bottom, some water is precipitated, resulting in low-temperature, low-humidity steam. The low-temperature, low-humidity steam then flows upward from the lumen of the inner finned tube 221 and is transported to the warming chamber 234 via the connection port 223. After being heated in the warming chamber 234, it flows back into the evaporator.

[0054] It is understood that the arrangement of the inner finned tubes 221 and the outer finned tubes 222 can improve the overall condensation efficiency of the steam, and by coupling with the direct cooling assembly 23, the cooling and heating functions of the thermoelectric module 235 can be fully utilized. Furthermore, the arrangement of the inner finned tubes 221 and the outer finned tubes 222 allows the steam flowing within the inner finned tubes 221 to absorb heat from the high-temperature, high-humidity steam at the inlet, thereby enhancing the heat exchange effect and enabling the steam temperature output from the connection port 223 to be higher than the steam temperature at the bottom inlet end of the inner finned tubes 221.

[0055] In combination with the above embodiments, Figure 1 、 Figure 4 As shown, a plurality of thermoelectric modules 235 are provided on the partition plate 232, and the plurality of thermoelectric modules 235 are spaced apart along the length of the partition plate 232. The thermoelectric modules 235 provide both cooling and heating by point-diffusion energy. In this embodiment, the plurality of thermoelectric modules 235 provided along the length of the partition plate 232 can achieve more uniform heating and cooling.

[0056] Specifically, by dispersing multiple thermoelectric modules 235 in the space, heating and cooling are diffused at multiple points in the space, thereby improving the uniformity of heat energy and cold energy.

[0057] In some embodiments, a first sealing gasket is provided at one end of the connecting pipe 24 connected to the connecting port 223 , and a second sealing gasket is provided at one end of the connecting pipe 24 connected to the heating chamber 234 .

[0058] In a specific embodiment, a bucket-shaped structure 236 with a gradually narrowing opening along the axial direction is provided at the bottom of the heating chamber 234. The bucket-shaped structure 236 facilitates the collection and flow of low-temperature steam, avoids deposition at the bottom, and improves steam circulation efficiency.

[0059] Through the above description of the embodiments, those skilled in the art will clearly understand that the evaporation device 10 in each embodiment evaporates the water to be treated to form steam, which is then cooled in the cooling device 20 and partially circulated back into the cooler, thereby purifying the water, improving treatment efficiency, and reducing the complexity and cost of system configuration. Furthermore, the provision of the inner finned tubes 221 and the outer finned tubes 222 increases the steam flow path and improves the steam condensation efficiency.

[0060] 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A low-energy consumption multi-type water purification system based on thermoelectric effect, characterized in that: include: An evaporation device, wherein the evaporation device is provided with a storage space for storing water to be treated and a steam outlet is provided on the evaporation device; A cooling device, comprising an outer shell, a heat exchange component and a direct cooling component, wherein the outer shell has an installation space, and the heat exchange component and the direct cooling component are both arranged in the installation space; Wherein, the heat exchange component includes a finned heat exchanger, the inlet end of the finned heat exchanger is in fluid communication with the steam outlet via a delivery pipeline, and the axial bottom of the finned heat exchanger is provided with a drain port for discharging condensed water; the direct cooling component includes an inner shell, the inner shell has an inner chamber, a partition plate is fixedly provided in the inner chamber, the partition plate divides the inner chamber into an independent condensing chamber and a heating chamber, a thermoelectric module is provided on the partition plate, the heating end of the thermoelectric module is connected to the partition plate, and the cooling end of the thermoelectric module is located in the condensing chamber; At least part of the main body of the fin heat exchanger is located in the condensing chamber, and a connecting port is provided at the axial top of the fin heat exchanger, and the connecting port is connected to the fluid of the heating chamber through a connecting pipe. A return pipe is provided at the axial bottom of the heating chamber, and the return pipe is connected to the fluid of the accommodating space.

2. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: It also includes a water tank, which is arranged at the bottom of the outer shell in the axial direction and is fluidically connected to the fin-type heat exchanger.

3. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 2 is characterized in that: The water tank is provided with a drain pipe, a first return elbow and a second return elbow. The drain pipe is connected to the fluid of the water tank, the first return elbow is connected to the fluid of the fin heat exchanger, and the second return elbow is connected to the fluid of the inner chamber. The first return elbow and the second return elbow are both used to transport condensed water into the water tank.

4. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: The evaporation device is provided with a condensation top cover, which is arranged at the top of the accommodating space in the axial direction, and is used for directly cooling part of the steam.

5. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 4 is characterized in that: The evaporation device is further provided with a reflux groove, which is arranged at the circumferential edge of the bottom of the condensation top cover in the vertical direction. A guide pipe is provided on the reflux groove, and the guide pipe is in fluid communication with the reflux groove.

6. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 4 is characterized in that: The condensing top cover includes a first side wall and a second side wall arranged opposite to each other, and a side sealing plate connected to both sides of the first side wall and the second side wall. One end of the first side wall is connected to one end of the second side wall, and the first side wall is arranged at an angle. The second side wall is constructed as an arc-shaped structure to enclose a cover structure with a fan-shaped cross-section.

7. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: The finned heat exchanger includes an inner finned tube and an outer finned tube, wherein the outer finned tube is sleeved on the outside of the inner finned tube, and a heat exchange chamber is formed between the inner finned tube and the outer finned tube. The outer finned tube is provided with a communication hole on the tube wall of the axial upper portion, and the communication hole is connected to the steam outlet fluid through a conveying pipeline; the inner finned tube is provided with a communication port at the bottom of the axial direction, and the communication port is connected to the heat exchange chamber; Wherein, a drainage hole for discharging condensed water is opened at the axial bottom of the outer fin tube, and the drainage hole is used to discharge the condensed water in the outer fin tube.

8. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: A first sealing rubber gasket is provided at one end of the communicating pipe connected to the connecting port, and a second sealing rubber gasket is provided at one end of the communicating pipe connected to the heating chamber.

9. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: The bottom of the temperature-raising chamber is provided with a bucket-shaped structure that gradually shrinks along the axial direction.

10. The low-energy consumption multi-type water purification system based on thermoelectric effect according to claim 1 is characterized in that: A plurality of thermoelectric modules are provided on the partition plate, and the plurality of thermoelectric modules are spaced apart along the length direction of the partition plate.

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