A water vending machine

Abstract

The utility model discloses a kind of water vending machines, it is related to water vending machine technical field, comprising: soft water purification system, it at least includes by pp filter element, activated carbon filter element and RO filter element;Hydrogen-rich system, it includes low TDS pure water tank and PEM electrolyzer, resin filter element is connected in series in the pipe line fixedly communicated between the water outlet of low TDS pure water tank and the inlet and outlet of PEM electrolyzer;Wherein, the water inlet of low TDS pure water tank is connected with the water outlet of RO filter element;The oxygen outlet of PEM electrolyzer is fixedly communicated with the inlet of low TDS pure water tank;It further includes hydrogen mixing jet device.The utility model is in PEM electrolyzer water inlet end series resin filter element, depth adsorption softening after residual ion and organic impurity, from source head, block pollutant contact electrode, guarantee electrolytic cell long-term efficient operation, second electrolysis generated pure hydrogen is transported to hydrogen mixing jet device by independent pipe line, with multi-stage purification after soft water high-efficiency fusion, prevent secondary pollution risk.

Description

Technical Field

[0001] This utility model relates to water vending machine technology, specifically a water vending machine. Background Technology

[0002] An automatic water vending machine is a device installed in a community that integrates centralized automatic water production and automatic water dispensing, providing users with purified drinking water 24 hours a day. Its design aims to provide community residents with internationally standardized drinking water using filtration and purification technology. It is a mechanical system that purifies water to meet direct drinking standards. This purification process involves eight stages: filtration, infiltration, mineralization, oxygenation, and sterilization, to achieve drinking water quality standards. Its filtration system specifically includes the following existing technologies:

[0003] A Chinese patent, publication number CN209242836U, published on August 13, 2019, discloses a self-service water vending machine.

[0004] Chinese authorized patent, publication number CN215954403U, publication date 2022-03-04, discloses an automatic water vending machine.

[0005] The current technology is inadequate because existing automatic water vending machines increase hydrogen content during the water softening and purification process. Hydrogen-rich water can activate human cells, delay aging, and even have a therapeutic effect on some diseases, improving the body's immune function. The main problem lies in the lack of an effective pre-treatment stage. Current processes often involve directly softening and purifying the raw water, followed by electrolysis for hydrogen enrichment. This process ignores impurities (such as fine particulate matter, organic matter, or ions) that may remain after softening and purification. Due to their inherent adsorption characteristics, the electrodes of the electrolyzer easily adsorb and accumulate these residual impurities. Over long-term operation, the continuous accumulation of impurities on the electrode surface causes severe electrode contamination (scaling or poisoning), reducing hydrogen production efficiency and affecting the quality and concentration of hydrogen-rich water. Furthermore, contamination accelerates electrode wear, shortening the lifespan of the electrolyzer and even the entire machine. Utility Model Content

[0006] The purpose of this invention is to provide a water vending machine to address the aforementioned shortcomings in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water vending machine, comprising:

[0008] A water softening and purification system, which includes at least a PP filter cartridge, an activated carbon filter cartridge, and an RO filter cartridge;

[0009] A hydrogen-rich system includes a low-TDS pure water tank and a PEM electrolyzer. An electrolyzing water pump and a resin filter are connected in series on a pipeline that is fixedly connected between the outlet of the low-TDS pure water tank and the inlet and outlet of the PEM electrolyzer.

[0010] The inlet of the low TDS pure water tank is connected in parallel with the outlet of the RO filter element.

[0011] The oxygen outlet of the PEM electrolyzer is fixedly connected to the inlet of the low TDS pure water tank;

[0012] It also includes a hydrogen mixing jet, wherein the hydrogen outlet of the PEM electrolyzer is fixedly connected to the bypass inlet of the hydrogen mixing jet, and the water inlet of the hydrogen mixing jet is connected to the soft water purification system.

[0013] Preferably, the water softening and purification system further includes a pure water tank, and a T33 filter element is connected in series on a pipeline that is fixedly connected between the input end of the top of the pure water tank and the output end of the RO filter element.

[0014] The inlet of the low TDS pure water tank is located between the input end of the T33 filter element and the output end of the RO filter element.

[0015] Preferably, a hydrogen-rich water pump is connected in series on the pipeline that is fixedly connected between the inlet of the hydrogen mixing jet and the outlet at the bottom of the pure water tank.

[0016] The bypass outlet of the pure water tank is fixedly connected to a pure water outlet pipeline with a pure water outlet valve connected in series.

[0017] The outlet of the hydrogen-mixing jet is fixedly connected to a hydrogen-rich water outlet pipeline.

[0018] Preferably, an inlet valve and a booster pump are connected in series on a pipeline that is fixedly connected between the outlet of the activated carbon filter and the inlet of the RO filter.

[0019] Preferably, the device also includes a water injection chamber, on the top of which a water injection gun is centrally mounted. The input end of the water injection gun is fixedly connected to a T-connector, and the two input ends of the T-connector are respectively connected to a pure water outlet pipe and a hydrogen-rich water outlet pipe.

[0020] Preferably, it also includes a nozzle mounting base with a built-in nozzle. The insertion surface of the nozzle mounting base is divided into an outer ring and an inner ring according to its structure. A bucket mouth insertion groove is formed between the outer ring and the inner ring, and the nozzle is centrally distributed in the inner ring.

[0021] The nozzle mounting base extends into the port opened at the bottom of the water jet chamber and is on the same plane as the bottom inner side of the water jet chamber;

[0022] It also includes a rinsing system, which includes at least a cleaning water pipe fixedly connected to the nozzle input end.

[0023] Preferably, the rinsing system further includes a water pump, the input end of which is fixedly connected to the output end of the pure water tank;

[0024] The output end of the water pump is connected to the cleaning water pipe, and a water outlet solenoid valve is connected in series on the cleaning water pipe.

[0025] Preferably, the system also includes an ozone generator, the output of which is connected to the cleaning water pipe and located between the water solenoid valve and the water pump.

[0026] Preferably, the cleaning water pipe is fixedly connected to the output end of the hydrogen mixing jet.

[0027] Preferably, the number of each of the PP filter element, activated carbon filter element, and RO filter element is not less than three.

[0028] Both the low TDS pure water tank and the pure water tank are equipped with high water level sensors and low water level sensors.

[0029] The water vending machine provided by this utility model, as described above, has the following beneficial effects:

[0030] 1. Effectively solves the problem of efficiency degradation and shortened lifespan caused by electrode fouling in existing hydrogen-rich water equipment. A dedicated resin filter element is connected in series at the inlet of the PEM electrolyzer. This filter element can deeply adsorb residual ionic impurities and organic pollutants after softening and purification, completely blocking the path of pollutants to the electrolysis electrodes. This design fundamentally avoids electrode scaling or poisoning, enabling the electrolyzer to maintain stable hydrogen production efficiency during long-term operation, while significantly extending the electrolyzer's lifespan and greatly reducing maintenance costs.

[0031] 2. The pure hydrogen produced by the PEM electrolyzer is transported to the hydrogen mixing ejector through an independent pipeline, while oxygen is introduced into a low-TDS pure water tank to maintain pressure balance and exert an antibacterial effect. The hydrogen mixing ejector directly draws in the multi-stage purified soft water, and through the Venturi effect of the ejector, efficiently dissolves hydrogen into the water flow. This physical hydrogen mixing mode completely isolates the electrolysis process from the final drinking water, eliminating the risk of secondary electrode contamination and avoiding the generation of chemical byproducts, thus ensuring the safety of drinking hydrogen-rich water.

[0032] 3. The RO membrane and T33 filter work together to control the TDS of the influent water below 5ppm, providing an ultrapure water environment for the electrolyzer and ensuring that the hydrogen production concentration is consistently higher than the national standard of 0.8ppm; the dual-outlet design allows users to choose between ordinary purified water or hydrogen-rich water as needed, reducing the frequency of electrolyzer operation and lowering energy consumption. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0034] Figure 1 A schematic diagram of the soft water purification system and the hydrogen-rich system is provided for embodiments of this utility model;

[0035] Figure 2 A schematic diagram of the rinsing system provided in an embodiment of this utility model;

[0036] Figure 3 This is a schematic diagram of the nozzle mounting base and nozzle provided in an embodiment of the present utility model;

[0037] Figure 4 A schematic diagram of the structure of the low TDS pure water tank, PEM electrolyzer, and hydrogen-rich water pump provided for embodiments of this utility model;

[0038] Figure 5 This is a schematic diagram of the structure of the resin filter element provided in an embodiment of the present utility model;

[0039] Figure 6 A schematic diagram of the structure of the water injection gun and the tee connecting pipe provided in the embodiment of this utility model;

[0040] Figure 7 A flowchart provided for an embodiment of this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Soft water purification system; 11. PP filter cartridge; 12. Activated carbon filter cartridge; 13. RO filter cartridge; 14. Pure water tank; 15. T33 filter cartridge; 16. Pure water outlet pipeline; 17. Pure water outlet valve; 18. Inlet valve; 19. Booster pump; 2. Hydrogen-rich system; 21. Low TDS pure water tank; 22. PEM electrolyzer; 23. Resin filter cartridge; 3. Hydrogen mixing jet; 31. Hydrogen-rich water outlet pipeline; 4. Hydrogen-rich water pump; 5. Water injection chamber; 51. Water injection gun; 52. T-connector fittings; 6. Nozzle mounting base; 61. Nozzle; 7. Flushing system; 71. Cleaning water pipe; 72. Water pump; 73. Outlet solenoid valve; 74. Ozone generator; 8. Wastewater valve; 200. High water level sensor; 201. Low water level sensor; 300. Electrolyzed water pump. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0044] Please see Figure 1-7 This utility model provides a technical solution: a water vending machine, comprising:

[0045] The water softening and purification system 1 includes at least a PP filter element 11, an activated carbon filter element 12, an RO filter element 13, and a pure water tank 14. A T33 filter element 15 is connected in series on a pipe that is fixedly connected between the inlet end of the pure water tank 14 and the outlet end of the RO filter element 13. Furthermore, the inlet of the low TDS pure water tank 21 is located between the inlet end of the T33 filter element 15 and the outlet end of the RO filter element 13.

[0046] The hydrogen-rich system 2 includes a low-TDS pure water tank 21 and a PEM electrolyzer 22. An electrolytic water pump 300 and a resin filter element 23 are connected in series on a pipeline that is fixedly connected between the outlet of the low-TDS pure water tank 21 and the inlet and outlet of the PEM electrolyzer 22. The resin filter element 23 effectively adsorbs and removes trace ions (such as calcium, magnesium, and heavy metals) and dissolved organic matter that may remain after RO purification. It serves as a pre-protection, fundamentally preventing the adsorption, scaling, or poisoning of pollutants on the electrode surface of the PEM electrolyzer 22, ensuring that the electrolysis electrode maintains high efficiency and stable hydrogen production performance for a long time, and significantly extending the service life of the electrolyzer.

[0047] The inlet of the low TDS pure water tank 21 is connected in parallel with the outlet of the RO filter element 13.

[0048] The oxygen outlet of the PEM electrolyzer 22 is fixedly connected to the inlet of the low TDS pure water tank 21.

[0049] The input of the electrolytic water pump 300 is connected to the outlet of the low TDS pure water tank 21, and the output is connected to the input of the resin filter element 23.

[0050] It also includes a hydrogen mixing jet injector 3, with the hydrogen outlet of the PEM electrolyzer 22 fixedly connected to the bypass inlet of the hydrogen mixing jet injector 3, and the water inlet of the hydrogen mixing jet injector 3 connected to the soft water purification system 1. A hydrogen-rich water pump 4 is connected in series on the pipeline that is fixedly connected between the water inlet of the hydrogen mixing jet injector 3 and the water outlet at the bottom of the pure water tank 14. The bypass water outlet of the pure water tank 14 is fixedly connected to a pure water outlet pipeline 16 with a pure water outlet valve 17 connected in series, and the water outlet of the hydrogen mixing jet injector 3 is fixedly connected to a hydrogen-rich water outlet pipeline 31 (the physical hydrogen mixing mode completely isolates the hydrogen production (electrolysis) process from the final drinking water, completely eliminating the risk of "secondary pollution" caused by drinking water flowing through the electrolyzer, while avoiding the mixing of electrolysis byproducts (such as trace ozone and free radicals) into the hydrogen-rich water, thus maximizing the purity, safety, and health benefits of the hydrogen-rich water).

[0051] Specifically, in this embodiment, after tap water is input into the water softening and purification system 1 of the water vending machine, it is processed sequentially through PP filter cartridge 11, activated carbon filter cartridge 12, and RO filter cartridge 13. It should be noted that the number of PP filter cartridges 11, activated carbon filter cartridges 12, and RO filter cartridges 13 is three.

[0052] Furthermore, an inlet valve 18 and a booster pump 19 are connected in series on a pipeline that is fixedly connected between the outlet of the activated carbon filter element 12 and the inlet of the RO filter element 13.

[0053] Furthermore, both the low TDS pure water tank 21 and the pure water tank 14 are equipped with a high water level sensor 200 and a low water level sensor 201. When the water level is lower than the low water level sensor 201, the system automatically starts to replenish the liquid in the low TDS pure water tank 21 and the pure water tank 14. When the water level is higher than the high water level sensor 200, the system automatically stops operating.

[0054] Furthermore, the input end of the wastewater valve 8 is fixedly connected to the other output end of the RO filter element 13, and then the concentrated water is discharged to complete the cleaning of the PP filter element 11, the activated carbon filter element 12, and the RO filter element 13. This is a conventional technology and will not be explained in detail.

[0055] The aforementioned technology effectively solves the problems of efficiency degradation and shortened lifespan caused by electrode fouling in existing hydrogen-rich water equipment. A dedicated resin filter element 23 is connected in series at the inlet of the PEM electrolyzer 22. This filter element 23 can deeply adsorb residual ionic impurities and organic pollutants after softening and purification, completely blocking the path of pollutants to the electrolysis electrodes. This design fundamentally avoids electrode scaling or poisoning, enabling the electrolyzer to maintain stable hydrogen production efficiency during long-term operation, while significantly extending the service life of the PEM electrolyzer 22 and greatly reducing maintenance costs. The pure hydrogen produced by the PEM electrolyzer 22 is transported to the hydrogen mixing jet 3 through an independent pipeline, while oxygen is introduced into the low TDS pure water tank 21 to maintain pressure balance and exert an antibacterial effect. The hydrogen mixing jet 3 directly draws soft water that has passed through multiple purification stages: PP filter element 11 → activated carbon 12 → RO membrane 13 → T33 post-carbon filter 15. The hydrogen is efficiently dissolved in the water flow through the Venturi effect of the hydrogen mixing jet 3. This physical hydrogen mixing mode completely isolates the electrolysis process from the final drinking water, eliminating the risk of secondary electrode contamination and avoiding the generation of chemical byproducts, thus ensuring the safety of drinking hydrogen-rich water. The RO membrane 14 and T33 filter cartridge 15 work together to control the influent TDS below 5 ppm, providing an ultrapure water environment for the PEM electrolyzer 22, ensuring a stable hydrogen production concentration higher than the national standard of 0.8 ppm. The dual-outlet design allows users to choose between ordinary purified water or hydrogen-rich water as needed, reducing the frequency of electrolyzer operation and lowering energy consumption.

[0056] As a further embodiment of this utility model, a water dispenser 1 has a water tank 5 fixed with screws installed inside, and the opening of the water tank 5 is connected to an opening on the water dispenser 1. Furthermore, an electric push rod is also fixedly installed on the water dispenser 1, which can push a door panel fixedly installed on the electric push rod to cover the opening of the water tank 5.

[0057] Furthermore, in combination Figure 2 As shown, a water injection gun 51 is installed at the center of the top of the water injection chamber 5. The input end of the water injection gun 51 is fixedly connected to a three-way connecting pipe 52. The two input ends of the three-way connecting pipe 52 are respectively connected to the pure water outlet pipe 16 and the hydrogen-rich water outlet pipe 31.

[0058] The nozzle mounting base 6 is fixed to the bottom of the water tank 5 with screws. The insertion surface of the nozzle mounting base 6 is divided into an outer ring and an inner ring according to the structure. The outer ring and the inner ring form a water tank opening insertion groove, and the nozzles 61 are centrally distributed in the inner ring. The nozzle mounting base 6 extends into the port opened at the bottom of the water tank 5 and is on the same plane as the inner bottom of the water tank 5.

[0059] It also includes a rinsing system 7, which includes at least a cleaning water pipe 71 and a water pump 72, which is fixedly connected to the input end of the nozzle 61. The input end of the water pump 72 is fixedly connected to the output end of the pure water tank 14, and the output end of the water pump 72 is connected to the cleaning water pipe 71. A water outlet solenoid valve 73 is connected in series on the cleaning water pipe 71.

[0060] The output of the ozone generator 74 is connected to the cleaning water pipe 71 and is located between the water solenoid valve 73 and the water pump 72. Then, the cleaning water pipe 71 is fixedly connected to the output of the hydrogen mixing jet 3.

[0061] During the cleaning process, start the water pump 72, turn on the ozone generator 71, and open the water outlet solenoid valve 73. Use ozone water to rinse the water tank through the water outlet nozzle 71 at the bottom. After rinsing for 15 seconds, turn off the ozone generator 71 and rinse with pure water for 5 seconds. Rinse for a total of 20 seconds. After rinsing is complete, turn off the water pump 72 and the water outlet solenoid valve 72.

[0062] Working principle: Controlled via the operation panel on the front of the water vending machine, the control functions include:

[0063] Bucket cleaning mode:

[0064] 1. The user inverts the empty water bucket and inserts the bucket opening into the water bucket opening insertion slot of the nozzle mounting base 6. The telescopic motor drives the locking plate to lock the bucket opening.

[0065] 2. Users can select "Cleaning Mode" through the control panel.

[0066] 3. System Start-up: Water pump 72, ozone generator 74, and outlet solenoid valve 73 are opened.

[0067] 4. Pure water and ozone are mixed in the cleaning water pipe 71 to form ozone water, which is sprayed upward through the nozzle 61 to powerfully rinse and disinfect the inner wall of the inverted water bucket (ozone water has strong oxidizing properties, which can effectively kill bacteria and viruses, remove organic residues, and has a sterilization rate of >99.9%).

[0068] 5. After rinsing for about 15 seconds, the ozone generator 74 is turned off. The system continues to rinse with purified water for about 5 seconds, for a total of about 20 seconds, to remove residual ozone.

[0069] 6. Turn off the water pump 72 and the outlet solenoid valve 73. The wastewater generated during cleaning is discharged through the gap between the nozzle mounting seat 6 and the barrel opening and the bottom of the water spray chamber 5.

[0070] Water bucket filling mode:

[0071] 1. The user places the cleaned water bucket upright into the water chamber 5, with the bucket opening aligned with the water injection gun 51.

[0072] 2. Users select "filling mode" through the operation panel and select the required water type (pure water or hydrogen-rich water) and water volume (or corresponding weight).

[0073] 3. The system controls the corresponding solenoid valve on the three-way connecting pipe 52 according to the selection, so that the pure water outlet pipe 16 or the hydrogen-rich water outlet pipe 31 is connected to the water injection gun 51.

[0074] 5. The gravity sensor detects the initial weight of the bucket.

[0075] 6. Open the corresponding water valve, and water will be injected into the water bucket through the water gun 51.

[0076] 7. The gravity sensor monitors the weight in real time. Once the preset target weight is reached, the system automatically closes the valve and stops filling.

[0077] It should be noted that the cleaning mode and the filling mode need to be selected separately.

[0078] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A water vending machine, characterized in that, include: The water softening and purification system (1) includes at least a PP filter element (11), an activated carbon filter element (12), and an RO filter element (13). The hydrogen-rich system (2) includes a low TDS pure water tank (21) and a PEM electrolyzer (22), and a resin filter element (23) is connected in series on a pipeline that is fixedly connected between the outlet of the low TDS pure water tank (21) and the inlet and outlet of the PEM electrolyzer (22). The inlet of the low TDS pure water tank (21) is connected in parallel with the outlet of the RO filter element (13); The oxygen outlet of the PEM electrolyzer (22) is fixedly connected to the inlet of the low TDS pure water tank (21); It also includes a hydrogen mixing jet (3), the hydrogen outlet of the PEM electrolyzer (22) is fixedly connected to the bypass inlet of the hydrogen mixing jet (3), and the water inlet of the hydrogen mixing jet (3) is connected to the soft water purification system (1).

2. A water vending machine according to claim 1, characterized in that, The soft water purification system (1) also includes a pure water tank (14), and a T33 filter element (15) is connected in series on the pipeline that is fixedly connected between the input end of the top of the pure water tank (14) and the output end of the RO filter element (13). The inlet of the low TDS pure water tank (21) is located between the input end of the T33 filter element (15) and the output end of the RO filter element (13).

3. A water vending machine according to claim 2, characterized in that, A hydrogen-rich water pump (4) is connected in series on the pipeline that is fixedly connected between the inlet of the hydrogen mixing jet (3) and the outlet at the bottom of the pure water tank (14). The bypass outlet of the pure water tank (14) is fixedly connected to a pure water outlet pipeline (16) with a pure water outlet valve (17) connected in series. The outlet of the hydrogen mixing jet (3) is fixedly connected to a hydrogen-rich water outlet pipeline (31).

4. A water vending machine according to claim 1, characterized in that, It also includes a water inlet valve (18) and a booster pump (19) connected in series on a pipeline that is fixedly connected between the outlet of the activated carbon filter element (12) and the inlet of the RO filter element (13).

5. A water vending machine according to claim 3, characterized in that, It also includes a water injection chamber (5), on which a water injection gun (51) is installed in the center of the top. The input end of the water injection gun (51) is fixedly connected to a three-way connecting pipe (52). The two input ends of the three-way connecting pipe (52) are respectively connected to the pure water outlet pipe (16) and the hydrogen-rich water outlet pipe (31).

6. A water vending machine according to claim 2, characterized in that, It also includes a nozzle mounting base (6) with a built-in nozzle (61). The insertion surface of the nozzle mounting base (6) is divided into an outer ring and an inner ring according to the structure. A water bucket mouth insertion groove is formed between the outer ring and the inner ring, and the nozzle (61) is centrally distributed in the inner ring. The nozzle mounting base (6) extends into the port opened at the bottom of the water jet chamber (5) and is on the same plane as the bottom of the inner side of the water jet chamber (5); It also includes a rinsing system (7), which includes at least a rinsing water pipe (71) fixedly connected to the input end of the nozzle (61).

7. A water vending machine according to claim 6, characterized in that, The flushing system (7) also includes a water pump (72), the input end of which is fixedly connected to the output end of the pure water tank (14); The output end of the water pump (72) is connected to the cleaning water pipe (71), and a water outlet solenoid valve (73) is connected in series on the cleaning water pipe (71).

8. A water vending machine according to claim 7, characterized in that, It also includes an ozone generator (74), the output of which is connected to the cleaning water pipe (71) and located between the water solenoid valve (73) and the water pump (72).

9. A water vending machine according to claim 1, characterized in that, The cleaning water pipe (71) is fixedly connected to the output end of the hydrogen mixing jet (3).

10. A water vending machine according to claim 1, characterized in that, It also includes an electrolytic water pump (300), whose input end is connected to the outlet of the low TDS pure water tank (21) and whose output end is connected to the input end of the resin filter (23).

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