Household appliance type desalination direct drinking machine for remote island

Abstract

The invention provides a household appliance type desalination direct drinking machine suitable for remote islands, and belongs to the technical field of seawater desalination, the household appliance type desalination direct drinking machine comprises a main machine and an external air cooling radiator, and the main machine 1 is provided with an evaporation condensation system, a water quality mineralization system and an intelligent control system. The evaporation condensation system is used for condensing and collecting water in the seawater after changing the water into a gas state, so that the desalting effect is achieved; the water quality mineralization system is used for mineralizing the produced distilled water into mineralized water and supplementing mineral substances beneficial to a human body and lacking in the distilled water; the intelligent control system enables a user to conveniently control opening and closing of the device, achieves the functions of automatic stop and the like when the device is full of water, and provides guarantee for safe operation of the device. The seawater is desalted through the processes of evaporation and condensation, collection and mineralization and direct drinking water supply, and mineralized direct drinking water is produced for users to use; the method is easy to operate and suitable for common family users; the structure is compact, and movement and arrangement in a family environment are facilitated; the intelligent degree is high, and the functions of remote control, automatic operation and the like can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of seawater desalination, and relates to a household appliance type desalination direct drinking machine used in remote islands. Background Art

[0002] The shortage of drinking water has always been an important factor restricting the development of island areas. Due to the influence of topography and landforms, there is little available runoff and insufficient groundwater reserves on islands. Currently, island drinking water is mainly obtained through the following methods: conventional water sources, mainland water supply, and unconventional water sources. Conventional water sources include surface water and groundwater on islands; mainland water supply is mainly suitable for islands close to the mainland; unconventional water sources include desalinated seawater, etc.

[0003] In island areas, the access to drinking water is limited by the scarcity of conventional water sources and the inconvenience of water supply from the mainland, making desalinated seawater the preferred option for island drinking water supply. Desalination refers to the process of separating dissolved mineral salts, organic matter, bacteria and viruses, and solids from seawater to obtain fresh water. According to the different salt water separation processes, desalination technology can be divided into two categories: physical methods and chemical methods. Among physical methods, those that use thermal energy as a power source and design phase changes during salt water separation are classified as thermal methods (thermal methods), mainly including multi-stage flash evaporation, multi-effect distillation, and compressed steam distillation. Those that use membranes (semipermeable membranes or ion exchange membranes, etc.) to separate salt water without phase changes are classified as membrane methods, mainly including reverse osmosis and electrodialysis. In addition, physical methods also include solvent extraction. Chemical methods mainly include hydrate method and ion exchange method. Although technologies such as multi-effect distillation, multi-stage flash evaporation, and compressed steam distillation have the advantages of low scaling tendency and high quality of product fresh water, their device sizes are mostly large and are not suitable for use in household seawater desalination devices. Another type of seawater desalination technology with a high utilization rate, reverse osmosis, has the advantages of low energy consumption and simple structure, but its product water quality is unstable, and the seawater needs to be strictly pretreated, and the semipermeable membrane needs to be cleaned and replaced regularly. Single-effect distillation, as the basis of thermal seawater desalination technology, can greatly simplify the device design and obtain a simpler, easier to operate, compact and efficient seawater desalination device, which is more suitable for remote island families. Deng Shangxun and others designed a combination of absorption heat pump and flash chamber to improve energy utilization (Deng Shangxun, Liu Xingyuan, Liu Bing, et al. A seawater desalination device [P]. Hebei Province: CN202120789843.X, 2021-12-24). However, there are currently no small household seawater desalination devices suitable for remote island families that have been promoted in island areas, because the application of seawater desalination technology is mostly oriented towards large-scale equipment and seawater desalination plants. Research on small household seawater desalination devices mostly remains in the laboratory stage, and no mature industrial products have been born. There are many challenges in the process of miniaturization of seawater desalination equipment. For home use scenarios, it must be mature, reliable, stable, easy to operate and compact in size. These aspects still need in-depth research and solutions.

[0004] The desalinated water produced by thermal desalination technology has a low TDS value (total dissolved solids), generally less than 10 mg / L. This distilled water lacks the minerals needed by the human body and is not suitable for long-term drinking. For the sake of drinking water health, the desalinated water produced needs to be mineralized. Wang Lin and others designed a mineralization system for desalinated water with high gas-water mixing efficiency and automatic and uniform feeding (Wang Lin, Zhang Chengyi, Mou Chunxia. Refillable mineralization system for desalinated water [P]. Shandong Province: CN202110603843.0, 2022-12-06). Although its mineralization tower has the advantages of automatic feeding and uniform mixing, the overall system is complex and large, and cannot be applied to small household desalination devices.

[0005] With the continuous evolution of science and technology, modern household appliances should have highly intelligent features to reduce the tediousness of users during operation. The automatic alarm system for desalination devices designed by Ni Weiguo and others has the ability to monitor the desalination process in real time, evaluate the desalination effect, and trigger the alarm mechanism and emergency backup program when necessary to ensure that the discharged fresh water meets the established salt content and transparency standards (Ni Weiguo, Peng Peng. Automatic alarm system for desalination devices [P]. Jiangsu Province: CN202310965432.5, 2023-10-31). The system realizes the monitoring and regulation of the desalination process, but in actual application, the system does not yet have core functions such as output water collection monitoring and automatic stop when the water is full, and its design is not suitable for household appliance desalination equipment. Summary of the invention

[0006] In order to solve the above problems, the present invention designs a household appliance type seawater desalination direct drinking machine for use in remote islands, and the mineralized direct drinking water produced by the machine can be used for daily drinking by household users. The device is suitable for remote island areas, or island areas with abundant solar energy and wind energy resources. Through the evaporation and condensation system in the device of the present invention, rapid water production can be achieved, and through the water quality mineralization system and intelligent control system, the mineralization of the produced water can be achieved, and the opening and closing of the device and the use of direct drinking water can be conveniently controlled, thereby bringing users a better use experience.

[0007] The technical solution of the present invention is as follows:

[0008] A household appliance type desalination direct drinking machine for remote islands comprises a main unit 1 and an external air-cooled radiator 8. The main unit 1 is provided with an evaporation condensation system, a water mineralization system and an intelligent control system.

[0009] The host 1 is divided into two detachable parts, including a host housing 2 and a movable seawater tank 3 . The host housing 2 is fixed to the upper surface of the movable seawater tank 3 .

[0010] The evaporation and condensation system includes a heat dissipation fan 6, an electric distilled water device 7, an air-cooled radiator 8, a condensate water tank 9, a condensate circulation pump 10 and a seawater circulation pump 11; the electric distilled water device 7 and the heat dissipation fan 6 are installed inside the main unit housing 2, and the heat dissipation fan 6 dissipates the heat inside the main unit housing 2; the condensate water tank 9 is embedded on the side of the movable seawater tank 3; the seawater circulation pump 11 pumps the seawater in the movable seawater tank 3 into the overflow device 12 of the electric distilled water device 7; the condensate circulation pump 10 pumps the condensate in the condensate water tank 9 into the condensation chamber interlayer 19 of the electric distilled water device 7; the air-cooled radiator 8 dissipates the high-temperature condensate that has completed the heat exchange by flowing out of the distiller condensation chamber interlayer 19 through a pipeline.

[0011] The electric distilled water device 7 has a condensation chamber on its upper part, a condensation chamber interlayer 19 on its outer layer, a distilled water outlet 18 on the bottom side of the condensation chamber, and an evaporation chamber on its lower part. An electric heating tube 20 and a temperature sensor 21 are provided in the evaporation chamber. The temperature sensor 21 is close to the top of the electric heating tube 20 to monitor the temperature in the evaporation chamber; the evaporation chamber is provided with an overflow device 12, and seawater in the movable seawater tank 3 is pumped into the overflow device 12 through a seawater circulation pump 11 to replenish the seawater in the evaporation chamber to maintain a stable water level, and excess seawater flows back to the movable seawater tank 3 from the overflow pipe 13.

[0012] The water mineralization system comprises a fresh water tank 16, a fresh water supply pump 14, a mineralized filter element 17 and a direct drinking water faucet 5; the direct drinking water faucet 5 is installed on the side of the main housing 2; the fresh water tank 16, the fresh water supply pump 14 and the mineralized filter element 17 are installed inside the main housing 2; the fresh water tank 16 is fixed at the bottom inside the main housing 2; the distilled water produced by the electric distilled water device 7 is collected and converged and flows into the fresh water tank 16 from the distilled water outlet 18; the fresh water supply pump 14 extracts distilled water from the fresh water tank 16 and pumps it through the mineralized filter element 17, thereby realizing the distilled water mineralization process, and finally flows out from the direct drinking water faucet 5 for users to drink.

[0013] The intelligent control system is arranged inside the main engine housing 2, including an intelligent control switch 4 installed on the side of the main engine housing 2, a distiller switch 31, an intermediate relay 30, an adjustable voltage power supply 29 and an AC contactor 32 installed inside the main engine housing 2, and a float liquid level switch 15 installed in the fresh water tank 16, so as to realize intelligent control of the seawater circulation pump 11, the condensate circulation pump 10, the fresh water supply pump 14 and the electric distilled water device 7; the intelligent control switch 4 is connected to the seawater circulation pump 11, the condensate circulation pump 10, the fresh water supply pump 14 and the electric distilled water device 7 to control the opening and closing of the seawater desalination device, and the three switches can independently control "the power supply of the electric distilled water device 7", "the power supply of the condensate circulation pump 10 and the seawater circulation pump 11" and "the power supply of the fresh water supply pump 14" respectively; the adjustable voltage power supply 29 is connected to the condensate circulation pump 10, the seawater circulation pump 11 and the fresh water supply pump 14, and after the voltage conversion by the adjustable voltage power supply 29, the condensate circulation pump 10, the seawater circulation pump 11 and The fresh water supply pump 14 is powered, and the output power of the condensate circulation pump 10, the seawater circulation pump 11 and the fresh water supply pump 14 can be adjusted by adjusting the output voltage of the adjustable voltage power supply 29; the float liquid level switch 15 is connected to the intermediate relay 30, and the AC contactor coil 33 is energized through the intermediate relay 30, so that the moving contact of the AC contactor 32 is closed with the static contact under the action of electromagnetic force, thereby connecting the power supply circuit of the electric distilled water device 7, so that the electric distilled water device 7 is powered and works, thereby achieving Safety control of the electric distilled water device 7; when the water level in the fresh water tank 16 reaches a preset height, the float of the float level switch 15 floats up due to the rising water level, causing its internal switch to be disconnected, triggering the AC contactor coil 33 to be powered off, thereby cutting off the power supply to the distiller switch 31; the distiller switch 31 is connected to the electric heating tube 20 and the temperature sensor 21 in the electric distilled water device 7. When the electric distilled water device 7 is dry-burning due to lack of water, the distiller switch 31 is cut off by the temperature sensor 21 to avoid the risk of continuous dry-burning.

[0014] The air-cooled radiator 8 has a plate heat exchanger 22 inside and is provided with a cooling fan 23. A shock-absorbing base 24 is installed at the bottom to reduce vibration and noise when the radiator is running.

[0015] The side wall of the condensate water tank 9 is provided with a transparent liquid level gauge 28, through which the liquid level inside the condensate water tank 9 can be observed in order to replenish the condensate; the upper cover of the condensate water tank 9 is provided with a condensate water tank inlet 26 and a condensate water tank outlet 27, and the condensate is introduced from the air-cooled radiator 8 into the condensate water tank 9 through the condensate water tank inlet 26, and then drawn into the distiller condensation chamber interlayer 19 through the condensate water tank outlet 27 to complete the heat exchange cycle; the condensate water tank 9 is also provided with a replenishing liquid inlet 25, which can be used to conveniently replenish the condensate therein.

[0016] The main engine housing 2 and the movable seawater tank 3 are fixedly connected by bolts and hexagon socket nuts, and the detachable structure can be more convenient for subsequent disassembly, maintenance and transportation.

[0017] The movable seawater tank 3 is provided with movable wheels, so that the whole machine can be easily moved, and the wheels can also be locked to stop rotating when it needs to be fixed. The movable seawater tank 3 is made of stainless steel. The gaps around the movable seawater tank 3 are filled with insulation boards to reduce the heat loss of the seawater tank. The movable seawater tank 3 is a split cover, which makes it more convenient to fill the movable seawater tank 3 with water. The added seawater should undergo a seawater pretreatment process of "mechanical filtration, precipitant precipitation and activated carbon filtration" to prevent the occurrence of violent boiling during the seawater distillation process, so as to ensure that the quality of the produced water is not damaged.

[0018] The effects and benefits of the present invention are:

[0019] (1) This device is suitable for use by families living on remote islands or islands with abundant solar and wind energy resources. Within the constraints of small size and weight, it can produce a large amount of direct drinking water, which is sufficient to meet the daily water needs of the entire family and effectively solve the problem of drinking water shortage in remote islands.

[0020] (2) It is equipped with an intelligent control system that supports remote control through an application. Users can configure intelligent scenarios to achieve functions such as one-button start and scheduled opening and closing. In addition, the system has built-in multiple safety protection mechanisms such as water shortage power off protection and water full automatic stop, which significantly improves the user's safety.

[0021] (3) A mineralized filter element is used to mineralize the output distilled water. The connection method of the adapter allows for easy replacement of the mineralized filter element, which is convenient for users. This mineralization method avoids the problem of the inappropriate amount of mineralizing agent to be added. From the distilled water outlet of the distiller to the direct drinking water faucet, the entire distilled water mineralization and drinking process is sealed and has no contact with the outside world, thus avoiding water pollution.

[0022] (4) Using an external air-cooled radiator as an additional condensation measure greatly improves the condensation effect while also increasing the utilization rate of seawater. By improving the condensation method of the device, the desalination water intake device can operate stably for 24 hours continuously and ultimately achieve a higher seawater-fresh water conversion rate.

[0023] (5) Design and optimize the seawater pretreatment process for specific types of seawater desalination equipment. By adopting the simplest and most economical treatment methods possible, it is ensured that the occurrence of violent boiling is avoided during the seawater heating process, thereby preventing the negative impact of sudden boiling and overflow of seawater on the quality of the produced water.

[0024] (6) The assembled design of the housing significantly improves the portability and maintenance efficiency of the desalination device, making it easy to disassemble and reassemble during transportation. In addition, its sophisticated structural layout ensures that the device size is consistent with household appliance standards, making it suitable for use in home environments.

[0025] (7) The internal circuits and power wiring of the desalination device are sealed with a waterproof power box, and heat dissipation fans are installed on both sides of the casing to avoid dangers such as short circuits and leakage caused by moisture inside the device.

[0026] (8) Install a removable shock-absorbing base at the bottom of the external air-cooled radiator to reduce vibration of the radiator and thus reduce some noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall schematic diagram of the household appliance type desalination direct drinking machine;

[0028] Figure 2 This is the elevation structure diagram of the household appliance type desalination direct drinking machine;

[0029] Figure 3 This is the schematic diagram of the evaporation and condensation structure of a household appliance-type desalination and direct drinking machine;

[0030] Figure 4 This is the structural diagram of the condensate water tank of the household appliance desalination direct drinking machine;

[0031] Figure 5 It is a circuit control diagram of a household appliance type desalination direct drinking machine.

[0032] In the figure: 1 host; 2 host shell; 3 movable seawater tank; 4 intelligent control switch; 5 direct drinking water faucet; 6 heat dissipation fan; 7 electric distilled water device; 8 air-cooled radiator; 9 condensate tank; 10 condensate circulation pump; 11 seawater circulation pump; 12 overflow; 13 overflow pipe; 14 fresh water supply pump; 15 float level switch; 16 fresh water tank; 17 mineral filter element; 18 distilled water outlet; 19 condensation chamber interlayer; 20 electric heating tube; 21 temperature sensor; 22 plate heat exchanger; 23 cooling fan; 24 shock-absorbing base; 25 condensate replenishing port; 26 condensate tank inlet; 27 condensate tank outlet; 28 liquid level meter; 29 12V power adapter; 30 intermediate relay; 31 distiller switch; 32 AC contactor; 33 AC contactor coil. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is described in detail below in conjunction with the technical scheme and the accompanying drawings.

[0034] The present invention is a household appliance type desalination direct drinking machine for remote islands. Figure 1 and Figure 2As shown, the main body includes a host 1 and an external air-cooled radiator 8, and the host 1 is provided with an evaporation condensation system, a water mineralization system and an intelligent control system.

[0035] The main unit 1 of the desalination device includes a main unit housing 2 and a movable seawater tank 3. The main unit 1 of the desalination device is divided into two detachable parts, the upper main unit housing 2 as the upper housing body, used to protect the internal structure and accommodate the installation of parts; the lower part is a movable seawater tank 3 as the lower housing body, used to hold seawater and bear the upper housing and parts. The seawater tank 3 is made of stainless steel to avoid seawater corrosion affecting its life; a load-bearing frame is built by welding 30mm square tubes to enhance the load-bearing capacity of the seawater tank.

[0036] The evaporation condensation system includes a heat dissipation fan 6, an electric distilled water device 7, an air-cooled radiator 8, a condensate water tank 9, a condensate circulation pump 10 and a seawater circulation pump 11. The electric distilled water device 7 is divided into two sections, the upper section is a condensation chamber, the outer layer of the condensation chamber is provided with a condensation chamber interlayer 19, and a distilled water outlet 18 is provided on the bottom side of the condensation chamber; the lower section is an evaporation chamber, which has a 2.5kw electric heating tube 20 and a temperature sensor 21 close to its top to monitor the temperature in the evaporation chamber to prevent dry burning due to lack of water. The evaporation chamber is provided with an overflow device 12, and the seawater circulation pump 11 extracts seawater from the seawater tank 3 and pumps it into the overflow device to replenish the seawater in the evaporation chamber to maintain a stable water level. The excess seawater can flow back to the movable seawater tank 3 from the overflow pipe 13. The condensate water tank 9 is embedded on the side of the movable seawater tank 3 to make full use of the side space. Heat dissipation fans 6 are installed on both sides of the main housing 2 to dissipate heat inside the desalination device.

[0037] The external air-cooled radiator 8 has a plate heat exchanger 22 inside, equipped with two cooling fans 23, and a shock-absorbing base 24 at the bottom to reduce vibration and noise when the radiator is running. In order to ensure the stability of the condensate level in the radiator and the smooth circulation of the condensate, a condensate water tank 9 and a condensate circulation pump 10 are provided. All inlets and outlets are equipped with suitable joints, connected with food-grade transparent silicone tubes and PU hard tubes, and a stainless steel threaded tube is added to protect the infusion pipeline.

[0038] The water mineralization system includes a fresh water tank 16, a fresh water supply pump 14, a mineralization filter element 17 and a direct drinking water tap 5. The fresh water tank 16 is fixed to the bottom of the main housing 2 by four triangular corner brackets, which restricts its left and right movement, and allows the fresh water tank 16 to be easily taken out from the fixed position to facilitate internal cleaning. The fresh water supply pump 14 extracts distilled water from the fresh water tank 16 and pumps it through the mineralization filter element 17, thereby realizing the distilled water mineralization process, and finally flows out from the direct drinking water tap 5 for users to drink.

[0039] The intelligent control system includes an intelligent control switch 4, a distiller switch 31, an intermediate relay 30, a float liquid level switch 15, a 220V to 12V adjustable voltage power supply 29 and an AC contactor 32, so as to realize intelligent control of electrical appliances such as a seawater circulation pump 11, a condensate circulation pump 10, a fresh water supply pump 14, and an electric distilled water device 7. The intelligent control switch 4 is installed on the side of the main housing 2, and the opening and closing of the seawater desalination device is controlled by the intelligent control switch 4. The three switches can independently control "power supply of the electric distilled water device 7", "power supply of the condensate circulation pump 10 and the seawater circulation pump 11" and "power supply of the fresh water supply pump 14" respectively; the adjustable voltage power supply 29 performs voltage conversion to supply power to the condensate circulation pump 10, the seawater circulation pump 11 and the fresh water supply pump 14, and the output power of the condensate circulation pump 10, the seawater circulation pump 11 and the fresh water supply pump 14 can be adjusted by adjusting the output voltage of the adjustable voltage power supply 29. The float liquid level switch 15 is connected to the intermediate relay 30, which controls the AC contactor coil 33 to be energized through the intermediate relay 30, so that the moving contact of the AC contactor 32 is closed with the static contact under the action of electromagnetic force, thereby connecting the power supply circuit of the electric distilled water maker 7, so that the electric distilled water maker 7 is powered and works, thereby achieving safe control of the electric distilled water maker 7; when the water level in the fresh water tank 16 reaches a preset height, the float of the float liquid level switch 15 floats up due to the rising water level, causing its internal switch to be disconnected, triggering the AC contactor coil 33 to be powered off, thereby cutting off the power supply to the distiller switch 31; the distiller switch 31 is connected to the electric heating tube 20 and the temperature sensor 21 in the electric distilled water maker 7. When the electric distilled water maker 7 is dry-burning due to lack of water, the distiller switch 31 is cut off through the temperature sensor 21 to avoid the risk of continuous dry-burning.

[0040] like Figure 4 As shown, a transparent liquid level gauge 28 is installed on the side wall of the condensate water tank 9, through which the liquid level inside the condensate water tank 9 can be observed in order to replenish the condensate; the upper cover of the condensate water tank 9 is provided with a condensate water tank inlet 26 and a condensate water tank outlet 27, and the condensate is introduced from the air-cooled radiator 8 into the condensate water tank 9 through the condensate water tank inlet 26, and then drawn into the distiller condensation chamber interlayer 19 through the condensate water tank outlet 27 to complete the heat exchange cycle; the condensate water tank 9 is also provided with a replenishing liquid inlet 25, which can be used to conveniently replenish the condensate therein.

[0041] like Figure 3 As shown, the structural principle of the evaporation and condensation system of the seawater desalination device is as follows:

[0042] Seawater circulation: The seawater in the movable seawater tank 3 is pumped into the overflow device 12 by the seawater circulation pump 11, and then finally flows into the lower evaporation chamber of the electric distilled water device 7 through the overflow device 12. When the water level in the evaporation chamber reaches the preset water level, the excess seawater overflows from the overflow device 12 and the overflow pipe 13 and flows back into the movable seawater tank 3. Through the coordinated work of the seawater circulation pump 11 and the overflow device 12, the seawater forms a circulation, and the seawater is continuously replenished into the evaporation chamber, so that the water level in the electric distilled water device 7 is always maintained stable to prevent dry boiling due to lack of water.

[0043] Refrigerant circulation: Condensate is used as the refrigerant medium and is stored in the condensate water tank 9. The condensate water tank 9 serves as a transfer buffer chamber, allowing the condensate to circulate safely between the condensate chamber interlayer 19 and the air-cooled radiator 8. The condensate circulation pump 10 extracts the condensate from the condensate water tank 9 and pumps it into the condensate chamber interlayer 19. After sufficient heat exchange with the interior of the condensate chamber, it flows out and returns to the air-cooled radiator 8. After passing through the plate heat exchanger 22 and the cooling fan 23, the condensate with a higher temperature after absorbing heat is dissipated and cooled, and then flows into the condensate water tank 9 to be used for subsequent condensation heat exchange.

[0044] Seawater desalination drinking machine control system Figure 5 As shown, the operation of the device is divided into the following two stages:

[0045] Evaporation and condensation water production stage: The pre-treated seawater is drawn from the movable seawater tank 3 by the seawater circulation pump 11 and pumped into the evaporation chamber of the electric distilled water device 7. The electric heating tube 20 heats the seawater to turn the water therein into gas and rise. After reaching the condensation chamber, it exchanges heat with the condensate in the interlayer 19 of the condensation chamber and condenses, forming distilled water that flows down along the inner wall and flows into the fresh water tank 16 from the distilled water outlet 18 after being collected. The circulation of seawater and refrigerant allows this process to be repeated continuously and stably, thereby continuously producing distilled water.

[0046] Mineralized direct drinking supply stage: When the user wants to use water, the switch controlling the fresh water supply pump 14 in the intelligent switch is manually or remotely started, and the water pump starts working to extract the distilled water in the fresh water tank 16, which flows through the mineralization filter element 17 to complete the mineralization, so that the distilled water becomes mineralized direct drinking water, and finally flows out from the direct drinking water faucet 5 for the user.

Claims

1. A household appliance type desalination direct drinking machine for remote islands, characterized in that: The household appliance-type desalination direct drinking machine for remote islands comprises a main unit (1) and an external air-cooled radiator (8); the main unit (1) is provided with an evaporation condensation system, a water mineralization system and an intelligent control system; The host (1) is divided into two detachable parts, the upper and lower parts, including a host shell (2) and a movable seawater tank (3); the host shell (2) is fixed to the upper surface of the movable seawater tank (3); The evaporation and condensation system comprises a heat dissipation fan (6), an electric distilled water device (7), an air-cooled radiator (8), a condensate water tank (9), a condensate circulation pump (10) and a seawater circulation pump (11); the electric distilled water device (7) and the heat dissipation fan (6) are installed inside the main housing (2), and the heat dissipation fan (6) dissipates the heat inside the main housing (2); the condensate water tank (9) is embedded and installed on the side of the movable seawater tank (3); the seawater circulation pump (11) pumps the seawater in the movable seawater tank (3) into the overflow device (12) of the electric distilled water device (7); the condensate circulation pump (10) pumps the condensate in the condensate water tank (9) into the condensation chamber interlayer (19) of the electric distilled water device (7); the air-cooled radiator (8) dissipates the heat of the high-temperature condensate that flows out of the condensation chamber interlayer (19) of the distiller through a pipeline; The water mineralization system comprises a fresh water tank (16), a fresh water supply pump (14), a mineralization filter element (17) and a direct drinking water faucet (5); the direct drinking water faucet (5) is installed on the side of the main housing (2); the fresh water tank (16), the fresh water supply pump (14) and the mineralization filter element (17) are installed inside the main housing (2); the fresh water tank (16) is fixed at the bottom inside the main housing (2); the distilled water generated by the electric distilled water device (7) is collected and converged and flows into the fresh water tank (16) from the distilled water outlet (18); the fresh water supply pump (14) extracts distilled water from the fresh water tank (16) and pumps it through the mineralization filter element (17), thereby realizing the distilled water mineralization process, and finally flows out from the direct drinking water faucet (5) to be supplied to users for drinking; The intelligent control system is arranged inside the main engine housing (2), and comprises an intelligent control switch (4) installed on the side of the main engine housing (2), a distiller switch (31), an intermediate relay (30), an adjustable voltage power supply (29) and an AC contactor (32) installed inside the main engine housing (2), and a float liquid level switch (15) installed in a fresh water tank (16), so as to realize intelligent control of a seawater circulation pump (11), a condensate circulation pump (10), a fresh water supply pump (14) and an electric distilled water device (7); the intelligent control switch (4) and the seawater circulation pump (1 1), a condensate circulation pump (10), a fresh water supply pump (14) and an electric distilled water device (7) are connected to control the opening and closing of the seawater desalination device, and the three switches independently control the power supply of the electric distilled water device (7), the power supply of the condensate circulation pump (10) and the seawater circulation pump (11), and the power supply of the fresh water supply pump (14); the adjustable voltage power supply (29) is connected to the condensate circulation pump (10), the seawater circulation pump (11) and the fresh water supply pump (14), and after voltage conversion by the adjustable voltage power supply (29), the condensate circulation pump (10) and the seawater circulation pump (11) are powered. ) and the fresh water supply pump (14) are powered, and the output power of the condensate circulation pump (10), the seawater circulation pump (11) and the fresh water supply pump (14) is adjusted by adjusting the output voltage of the adjustable voltage power supply (29); the float liquid level switch (15) is connected to the intermediate relay (30), and the AC contactor coil (33) is controlled to be energized through the intermediate relay (30), so that the moving contact of the AC contactor (32) is closed with the static contact under the action of electromagnetic force, thereby connecting the power supply circuit of the electric distilled water device (7), so that the electric distilled water device (7) is powered and works, thereby achieving Safety control of paired electric distilled water devices (7); when the water level in the fresh water tank (16) reaches a preset height, the float of the float liquid level switch (15) floats up due to the rising water level, causing its internal switch to be disconnected, triggering the AC contactor coil (33) to cut off the power supply, thereby cutting off the power supply to the distiller switch (31); the distiller switch (31) is connected to the electric heating tube (20) and the temperature sensor (21) in the electric distilled water device (7); when the electric distilled water device (7) is dry-burned due to lack of water, the distiller switch (31) is cut off through the temperature sensor (21) to avoid the risk of continuous dry-burning.

2. A household appliance type desalination direct drinking machine for remote islands according to claim 1, characterized in that: The electric distilled water device (7) has a condensation chamber at its upper part, a condensation chamber interlayer (19) is provided on the outer layer of the condensation chamber, a distilled water outlet (18) is provided on the bottom side of the condensation chamber, and an evaporation chamber is provided at its lower part, an electric heating tube (20) and a temperature sensor (21) are provided in the evaporation chamber, and the temperature sensor (21) is close to the top of the electric heating tube (20) to monitor the temperature in the evaporation chamber; the evaporation chamber is provided with an overflow device (12), and seawater in the movable seawater tank (3) is pumped into the overflow device (12) through a seawater circulation pump (11) to replenish the seawater in the evaporation chamber to maintain a stable water level, and excess seawater flows back to the movable seawater tank (3) from the overflow pipe (13).

3. The household appliance type desalination direct drinking machine for remote islands according to claim 1, characterized in that: The air-cooled radiator (8) has a plate heat exchanger (22) inside and is provided with a cooling fan (23), and a shock-absorbing base (24) is installed at the bottom.

4. The household appliance type desalination direct drinking machine for remote islands according to claim 1, characterized in that: The side wall of the condensate water tank (9) is provided with a transparent liquid level gauge 28, through which the liquid level inside the condensate water tank (9) can be observed in order to replenish the condensate; the upper cover of the condensate water tank (9) is provided with a condensate water tank inlet (26) and a condensate water tank outlet (27); the condensate is introduced from the air-cooled radiator (8) into the condensate water tank (9) through the condensate water tank inlet (26), and then drawn into the distiller condensation chamber interlayer (19) through the condensate water tank outlet (27) to complete the heat exchange cycle; the condensate water tank (9) is also provided with a replenishing liquid inlet (25).

5. The household appliance type desalination direct drinking machine for remote islands according to claim 1, characterized in that: The main engine housing (2) and the movable seawater tank (3) are fixedly connected by bolts and hexagon socket nuts, and have a detachable structure.

6. The household appliance type desalination direct drinking machine for remote islands according to claim 1, characterized in that: The movable seawater tank (3) has movable wheels, is made of stainless steel, and has a split cover.

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