Hydrogen-rich water machine

Abstract

The invention relates to the technical field of drinking water, and discloses a hydrogen-rich water machine which comprises a hydrogen production module and a hydrogen melting module, the hydrogen melting module comprises a hydrogen melting tank, a thin film and a micro-nano bubble pump; the thin film is arranged in the hydrogen melting tank and is divided into an upper cavity and a lower cavity; the hydrogen production module and the lower cavity are communicated with a gas supply pipe, so that hydrogen is introduced into water in the lower cavity and micro-nano bubbles in the water are brought out; an air inlet of the micro-nano bubble pump is communicated with the upper cavity, a water inlet of the micro-nano bubble pump is communicated with the lower cavity, and an outlet of the micro-nano bubble pump is communicated with the lower cavity; and the thin film is used for blocking water and breaking the water film of the micro-nano bubbles to release hydrogen which is not dissolved and utilized, so that the hydrogen passes through and enters the upper cavity. The micro-nano bubbles flow upwards along with the hydrogen, when the micro-nano bubbles pass through the thin film, the bubble water film is broken, the hydrogen which is not dissolved and utilized is released, new micro-nano bubbles are generated in the micro-nano bubble pump, larger mass transfer driving force is achieved, and the dissolving efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of drinking water technology, and in particular to a hydrogen-rich water machine. Background Technology

[0002] Currently, household and commercial water purifiers have functions such as filtration, purification, dechlorination, and heating, which can effectively remove fine sediment, heavy metals, bacteria, and residual chlorine from tap water. Hydrogen-rich water, also known as "hydrogen molecule water," contains dissolved hydrogen molecules, and drinking hydrogen-rich water can have a positive impact on human health.

[0003] Under normal temperature and pressure conditions, the mass solubility of hydrogen in water is approximately 1.6 ppm (equivalent to a volume solubility of 1.83%), which is considered a gas that is poorly soluble in water. Effective measures must be taken to ensure the amount of hydrogen that can dissolve in water.

[0004] For example, Chinese invention patent CN111792718B discloses a hydrogen-rich water generator and its generation method based on a sustainable hydrogen production device. The hydrogen-rich water generator is a closed container with an air inlet pipe, a water inlet pipe, and a water outlet. A second opening is located on the upper side of the generator, connected to a feeding pipe used to add water when venting air from the generator. A third opening is located on the side wall of the generator, connected to the second opening via a pipe. A circulation pump is installed on this pipe, drawing gas from the second opening into the pipe and returning it to the generator through the third opening. The gas agitates the water inside the generator in a bubbling manner, thereby increasing the concentration of the hydrogen-rich water.

[0005] Furthermore, Chinese utility model patent CN219652781U discloses a hydrogen-rich water generation device, including a hydrogen production component for electrolyzing water to produce hydrogen. One end of the hydrogen production component is connected to a water supply component for providing a water source; the other end of the hydrogen production component is connected to a water production component. The water production component includes a hydrogen mixing structure and a hydrogen reflux structure. The hydrogen mixing structure is connected to the hydrogen outlet of the hydrogen production component, and a hydrogen reflux structure is installed on the hydrogen mixing structure. The hydrogen inlet of the hydrogen mixing structure is connected to the interior of the hydrogen mixing structure through the hydrogen reflux structure. The hydrogen reflux structure can repeatedly mix hydrogen with water, effectively increasing the contact time between hydrogen and water.

[0006] The aforementioned hydrogen-rich water generation device introduces hydrogen gas into water in the form of large bubbles. However, the contact area between hydrogen gas and water is limited, resulting in low solubility. To address this issue, existing technologies employ micro / nano bubble generators to mix gas and water before introducing the mixture into a dissolved gas tank. This allows the gas to dissolve in the water, and the dissolved gas is then released at high speed through a gas release device to generate micro / nano bubbles of micron and nanometer sizes.

[0007] In these micro- and nano-bubbles, hydrogen gas is encapsulated by a surface water film and undergoes molecular dissolution with water through this film, increasing the solubility. However, if hydrogen gas is introduced into the micro- and nano-bubble water, the micro- and nano-bubbles are directly carried into the circulation loop. At this point, the micro- and nano-bubbles are still in a bubble form where hydrogen gas is encapsulated by a water film (not a free gas state). After one dissolution, these micro- and nano-bubbles have low internal pressure and weak mass transfer driving force, making further dissolution in the circulating water difficult. Therefore, a hydrogen-rich water machine is needed that can improve the dissolution efficiency of hydrogen in water while ensuring the solubility rate. Summary of the Invention

[0008] The technical problem to be solved by this invention is that when hydrogen is introduced into micro-nano bubble water, the micro-nano bubbles are directly carried into the circulation loop. After one dissolution, these micro-nano bubbles have low internal pressure and weak mass transfer driving force, making it difficult for them to dissolve further in the water. Therefore, it is impossible to improve the dissolution efficiency of hydrogen in water while ensuring the dissolution rate.

[0009] To solve the above-mentioned technical problems, the present invention provides a technical solution for a hydrogen-rich water machine: Hydrogen-rich water machines include: Hydrogen production module, used to electrolyze water to produce hydrogen; The hydrogen melting module includes a hydrogen melting tank, a membrane, and a micro / nano bubble pump. The membrane is disposed inside the hydrogen melting tank and divides the hydrogen melting tank into an upper cavity and a lower cavity. The volume of the upper cavity is less than one-tenth of the volume of the lower cavity. Water is contained in the lower cavity and the membrane is spaced apart from the water surface. A gas supply pipe connects the hydrogen production module and the lower cavity to introduce hydrogen into the water in the lower cavity and carry out micro-nano bubbles in the water. The air inlet of the micro-nano bubble pump is connected to the upper cavity, the water inlet of the micro-nano bubble pump is connected to the lower cavity, and the outlet of the micro-nano bubble pump is connected to the lower cavity. The film is used to block water and break the water film of micro-nano bubbles to release undissolved hydrogen gas, which then passes through into the upper cavity.

[0010] Furthermore, the air inlet is a first interface, the outlet is a second interface, and the water inlet is a third interface. The first interface is connected to the upper cavity, the second interface is connected to the lower cavity, and a circulation pipe is connected to the third interface and the lower cavity.

[0011] Furthermore, the hydrogen melting tank is a pressure-resistant tank, the gas supply pipe is equipped with a gas pump, and the hydrogen melting module also includes a pressure sensor, which is located in the upper cavity and is used to detect the gas pressure in the upper cavity and send a gas pressure signal. A first valve is provided on the air supply pipe between the air pump and the lower cavity, and a second valve is provided on the circulation pipe between the first interface and the upper cavity.

[0012] Furthermore, the hydrogen-rich water machine also includes a control board, which is electrically connected to the micro-nano bubble pump, the pressure sensor, the first valve, and the second valve, respectively. The control board is configured to receive the air pressure signal; When the pressure of the gas pressure signal exceeds the minimum pressure threshold of the control board, the first valve is controlled to reduce its opening to allow hydrogen to flow into the water in the lower chamber at a low flow rate, and the second valve and the micro-nano bubble pump are controlled to open.

[0013] Furthermore, the hydrogen melting tank includes an upper cover and a lower tank, the upper cover and the lower tank are detachably connected, and the membrane is detachably disposed between the upper cover and the lower tank; The circulation pipe between the first interface and the upper cavity is connected to the upper cover, and the internal space of the upper cover constitutes the upper cavity; the air supply pipe and the water suction pipe are connected to the lower tank.

[0014] Furthermore, the lower opening of the upper cover is provided with an external thread, and the inner side of the external thread is provided with a first retaining edge; the upper opening of the lower tank is provided with an internal thread, and the inner side of the internal thread is provided with a second retaining edge. The upper cover fits over the upper opening of the lower tank, and the external threaded portion connects with the internal threaded portion, so that the first and second flanges clamp the film; a sealing ring is also provided between the first and second flanges, and the sealing ring contacts the film.

[0015] Furthermore, the lower tank body is provided with a first sub-cavity, a second sub-cavity, and a third sub-cavity that are connected vertically. The first sub-cavity is horizontally opposite to the internal thread portion. The horizontal cross-sections of the first sub-cavity, the second sub-cavity, and the third sub-cavity increase sequentially, and the horizontal cross-section of the second sub-cavity gradually increases from top to bottom. The second sub-cavity and the third sub-cavity constitute the lower cavity.

[0016] Furthermore, the hydrogen-rich water machine also includes a buffer tank, with a water outlet pipe between the buffer tank and the lower cavity, the water outlet pipe being equipped with a pressure regulating valve, and an exhaust valve being provided at the top of the buffer tank.

[0017] Furthermore, the hydrogen-rich water machine also includes a purification module and a pure water tank connected together. The pure water tank is located between the purification module and the hydrogen melting tank. The pure water tank is connected to the lower cavity through a water inlet pipe. The water inlet pipe is equipped with a third valve, and the control board is electrically connected to the third valve to control the opening of the third valve.

[0018] Furthermore, the hydrogen melting module also includes a water level sensor, which is located in the lower cavity and is spaced apart on the lower side of the membrane. The control board is electrically connected to the water level sensor. The water level sensor is used to detect the water level in the lower cavity and send a water level signal; the control board is configured to receive the water level signal and control the third valve to close when the water level exceeds the maximum water level threshold of the control board.

[0019] Compared with existing technologies, the hydrogen-rich water machine of this invention has the following advantages: It adopts a design of a hydrogen production module and a hydrogen dissolving module. The hydrogen dissolving module includes a hydrogen dissolving tank, a membrane, and a micro / nano bubble pump. The membrane divides the hydrogen dissolving tank into an upper chamber and a lower chamber. A gas supply pipe connects the hydrogen production module to the lower chamber of the hydrogen dissolving tank. The air inlet of the micro / nano bubble pump is connected to the upper chamber, the water inlet of the micro / nano bubble pump is connected to the lower chamber, and the outlet of the micro / nano bubble pump is connected to the lower chamber.

[0020] The upper chamber serves as a gas chamber for containing dry hydrogen, while the lower chamber serves as a water chamber for containing a mixture of water and micro / nano bubbles. The volume of the upper chamber is less than one-tenth the volume of the lower chamber. The hydrogen production module introduces hydrogen into the lower chamber through a gas supply pipe. The hydrogen passes through a membrane and enters the sealed and small upper chamber. A small amount of hydrogen is sufficient to generate the pressure required for hydrogen dissolution, ensuring that the large amount of water in the lower chamber can fully dissolve and consume the hydrogen.

[0021] During operation, the hydrogen production module first introduces hydrogen gas into the water in the lower chamber through the gas supply pipe. The hydrogen gas quickly floats to the surface and passes through the membrane into the upper chamber. The inlet of the micro-nano bubble pump draws in hydrogen gas from the upper chamber, while the inlet draws in water from the lower chamber. Through gas-liquid mixing or shearing, the hydrogen gas is dispersed into micro-nano bubbles, thus creating a mixture of micro-nano hydrogen bubbles and water. The mixture flows back into the lower chamber through the outlet, dispersing the micro-nano hydrogen bubbles throughout the entire water body of the lower chamber.

[0022] The membrane, acting as a gas-water separation interface, keeps water constantly isolated in the lower chamber of the hydrogen melting tank. This ensures that undissolved hydrogen molecules can smoothly pass through the membrane into the upper chamber, while preventing water from entering the upper chamber with the hydrogen, thus guaranteeing the purity and dryness of the released hydrogen. More importantly, a physical aeration method is used to carry away excess micro- and nano-bubbles from the water. These micro- and nano-bubbles flow upwards with the hydrogen, breaking the bubble-water film as they pass through the membrane and releasing the undissolved hydrogen.

[0023] The micro / nano bubble pump draws in enriched pure hydrogen from the upper chamber and simultaneously draws in water from the lower chamber, generating new micro / nano bubbles within the pump. This effectively redistributes the collected hydrogen into fresh micro / nano bubbles, providing a greater mass transfer driving force and improving dissolution efficiency. The hydrogen circulation path is: hydrogen generation module, lower chamber, membrane, upper chamber, micro / nano bubble pump, regenerated micro / nano bubbles, lower chamber. The release of hydrogen through membrane rupture ensures that the hydrogen always dissolves efficiently in water in a fresh micro / nano bubble form.

[0024] Thin films and micro / nano bubble pumps constitute the pathway for hydrogen circulation and dissolution, allowing a small amount of hydrogen to repeatedly come into contact with and dissolve in water in a closed environment. This improves the utilization rate and dissolution efficiency of hydrogen, and allows for the production of high-concentration hydrogen-rich water with less hydrogen raw material, thereby reducing the energy consumption and operating costs of hydrogen production.

[0025] By accumulating pressure in the small upper chamber, combining a closed hydrogen circulation loop, and using a membrane and micro / nano bubble pump for circulation, high utilization and enhanced circulation efficiency are achieved, ensuring the continuous and safe production of hydrogen-rich water. As new micro / nano bubbles are continuously injected into the water in the lower chamber, the rising hydrogen gas carries these suspended bubbles to the membrane, releasing hydrogen. This transforms the hydrogen dissolution process in the water from static surface dissolution to dynamic, cyclical dissolution, achieving the goal of preparing higher concentrations of hydrogen-rich water.

[0026] Regarding the relationship between pressure and solubility, according to Henry's Law, at a given temperature and equilibrium state, the solubility of a gas in a liquid is directly proportional to the equilibrium partial pressure of that gas. Therefore, the higher the hydrogen pressure, the higher the solubility of hydrogen in water. By combining the hydrogen melting tank (pressure-resistant tank) with the gas pump in the gas supply pipe, a pressure chamber higher than atmospheric pressure can be constructed in the upper cavity of the hydrogen melting tank. The pressure chamber works synergistically with the circulating dissolution process, enabling hydrogen to quickly reach a saturated dissolved state in water. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the principle of the hydrogen-rich water machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the hydrogen melting module according to an embodiment of the present invention; Figure 3 yes Figure 2 Partial cross-sectional view of the Zhongrong hydrogen tank and the thin film; Figure 4 This is a schematic diagram of the principle of a hydrogen-rich water machine according to other embodiments of the present invention; Figure 5 This is a three-dimensional schematic diagram of a hydrogen-rich water machine according to another embodiment of the present invention; In the diagram: 1. Hydrogen production module; 11. Ion exchange resin filter element; 12. PEM electrolyzer; 2. Hydrogen melting module; 21. Hydrogen melting tank; 211. Upper cavity; 212. Lower cavity; 213. Upper cover; 214. Lower tank body; 215. External threaded part; 216. First retaining edge; 217. Internal threaded part; 218. Second retaining edge; 219. Sealing ring; 2121. First sub-cavity; 2122. Second sub-cavity; 2123. Third sub-cavity; 22. Membrane; 221. Air supply pipe; 222. Circulation pipe; 223. Water suction pipe; 224. Air pump; 23. Micro / nano bubble pump; 231. First interface; 232. Second interface; 233. Third interface; 234. First valve; 235. Second valve; 24. Pressure sensor; 25. Water level sensor; 3. Control panel; 4. Buffer tank; 41. Outlet pipe; 42. Pressure regulating valve; 43. Air vent valve; 5. Purification module; 51. Water purification filter element; 52. Wastewater pipe; 53. Flushing pipe; 54. RO reverse osmosis membrane filter element; 6. Pure water tank; 61. Inlet pipe; 62. Water supply pump; 63. Third valve; 7. Mineralization module; 71. Ore modification filter element; 72. Small molecule activator; 73. Secondary water purification filter element. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a hydrogen-rich water machine, comprising: a hydrogen production module 1, a hydrogen melting module 2, and a gas supply pipe 221; the hydrogen production module 1 is used to electrolyze water to produce hydrogen gas; the hydrogen melting module 2 includes a hydrogen melting tank 21, a membrane 22, and a micro / nano bubble pump 23, the membrane 22 being disposed inside the hydrogen melting tank 21, the membrane 22 dividing the hydrogen melting tank 21 into an upper cavity 211 and a lower cavity 212, the volume of the upper cavity 211 being less than one-tenth the volume of the lower cavity 212, the lower cavity 212 containing water, and the membrane 22 being spaced apart from the water surface.

[0033] The gas supply pipe 221 connects the hydrogen production module 1 and the lower chamber 212 to introduce hydrogen into the water in the lower chamber 212 and carry out micro-nano bubbles in the water; the air inlet of the micro-nano bubble pump 23 is connected to the upper chamber 211, the water inlet of the micro-nano bubble pump 23 is connected to the lower chamber 212, and the outlet of the micro-nano bubble pump 23 is connected to the lower chamber 212; the micro-nano bubble pump 23 is used to mix the hydrogen in the upper chamber 211 and the water in the lower chamber 212 to form micro-nano bubbles, and release the micro-nano bubbles from the outlet to the lower chamber 212; the membrane 22 is used to block water and break the water film of the micro-nano bubbles to release the undissolved hydrogen, so that the hydrogen can pass through and enter the upper chamber 211.

[0034] This hydrogen-rich water machine adopts a design consisting of a hydrogen production module 1 and a hydrogen melting module 2. The hydrogen melting module 2 includes a hydrogen melting tank 21, a membrane 22, and a micro / nano bubble pump 23. The membrane 22 divides the hydrogen melting tank 21 into an upper chamber 211 and a lower chamber 212. A gas supply pipe 221 connects the hydrogen production module 1 to the lower chamber 212 of the hydrogen melting tank 21. The air inlet of the micro / nano bubble pump 23 is connected to the upper chamber 211, the water inlet of the micro / nano bubble pump 23 is connected to the lower chamber 212, and the outlet of the micro / nano bubble pump 23 is connected to the lower chamber 212.

[0035] The upper chamber 211 serves as a gas chamber for containing dry hydrogen, while the lower chamber 212 serves as a water chamber for containing a mixture of water and micro / nano bubbles. The volume of the upper chamber 211 is less than one-tenth the volume of the lower chamber 212. The hydrogen production module 1 introduces hydrogen into the lower chamber 212 through a gas supply pipe 221. The hydrogen passes through a membrane 22 and enters the sealed and small-volume upper chamber 211. A small amount of hydrogen is sufficient to generate the pressure required for hydrogen dissolution, ensuring that the large amount of water in the lower chamber 212 can fully dissolve and consume the hydrogen. It should be noted that the volume of the upper chamber 211 is ≥10mL. For example, the volume of the upper chamber 211 is 20mL, and the volume of the lower chamber 212 is 500mL, meaning the volume ratio of the upper chamber 211 to the lower chamber 212 is 1:25, which is greater than the saturated solubility of hydrogen under pressurized conditions, ensuring that the hydrogen supply meets the maximum dissolution requirement.

[0036] In some embodiments, the volume of the upper cavity 211 can be 10 mL, 15 mL, 25 mL, 30 mL, 35 mL, 40 mL, 45 mL, or 50 mL, or any other volume between 10 mL and 50 mL. Correspondingly, the volume of the lower cavity 212 can also be 550 mL, 600 mL, 650 mL, 700 mL, 750 mL, 800 mL, 850 mL, 900 mL, 1000 mL, 1100 mL, 1200 mL, 1300 mL, 1400 mL, 1500 mL, 1600 mL, 1700 mL, 1800 mL, 1900 mL, or 2000 mL, or any other volume between 500 mL and 2000 mL. It should be noted that if the volume ratio of the upper chamber 211 to the lower chamber 212 is greater than 1:10, the hydrogen supply will far exceed its saturated solubility in water, easily leading to low hydrogen utilization and high hydrogen production costs. Conversely, if the volume ratio of the upper chamber 211 to the lower chamber 212 is less than 1:100, the inability to hold sufficient hydrogen may prevent the hydrogen-rich water from reaching saturation.

[0037] During operation, the hydrogen production module 1 first introduces hydrogen gas into the water in the lower cavity 212 through the gas supply pipe 221. The hydrogen gas quickly floats to the surface and passes through the membrane 22 into the upper cavity 211. The air inlet of the micro-nano bubble pump 23 draws in hydrogen gas from the upper cavity 211, while the water inlet draws in water from the lower cavity 212. The hydrogen gas is dispersed into micro-nano bubbles through gas-liquid mixing or shearing, thus creating a mixture of micro-nano hydrogen bubbles and water. The mixture flows back to the lower cavity 212 through the outlet, dispersing the micro-nano hydrogen bubbles throughout the entire water body of the lower cavity 212.

[0038] The membrane 22 serves as a gas-water separation interface, keeping water constantly isolated within the lower chamber 212 of the hydrogen melting tank 21. This ensures that undissolved hydrogen molecules can smoothly pass through the membrane 22 into the upper chamber 211, while preventing water from entering the upper chamber 211 along with the hydrogen, thus guaranteeing the purity and dryness of the released hydrogen. More importantly, a physical aeration method is used to carry away excess micro- and nano-bubbles from the water. These micro- and nano-bubbles flow upwards with the hydrogen, breaking the bubble-water film as they pass through the membrane 22 and releasing the undissolved hydrogen.

[0039] It should be noted that the film 22 is made of a microporous polymer material. For example, the film 22 is a polytetrafluoroethylene (e-PTFE) film, whose microporous structure can effectively block liquid water while allowing small molecule gases to pass through. In some embodiments, the film 22 can also be a thermoplastic polyurethane film, a polyethylene film, or a polypropylene film, or a composite film of non-woven fabric and any of the above polymer materials, which can also achieve the purpose of blocking water and allowing hydrogen gas to penetrate into the upper cavity 211.

[0040] The micro / nano bubble pump 23 draws in enriched pure hydrogen from the upper chamber 211 and simultaneously draws in water from the lower chamber 212. New micro / nano bubbles are generated within the pump 23, effectively redistributing the collected hydrogen into fresh micro / nano bubbles. This initial state provides greater mass transfer driving force, improving dissolution efficiency. The hydrogen circulation path is: hydrogen generation module 1, lower chamber 212, membrane 22, upper chamber 211, micro / nano bubble pump 23, regenerated micro / nano bubbles, lower chamber 212. The release of hydrogen through membrane rupture ensures that the hydrogen always dissolves efficiently in water in a fresh micro / nano bubble form.

[0041] The thin film 22 and the micro-nano bubble pump 23 constitute the hydrogen circulation and dissolution path, allowing a small amount of hydrogen to repeatedly come into contact with water and dissolve in a closed environment, which improves the utilization rate and dissolution efficiency of hydrogen. Higher concentration of hydrogen-rich water can be produced with less hydrogen raw material, reducing the energy consumption and operating cost of hydrogen production.

[0042] By accumulating pressure in the upper chamber 211 within a small space, combined with a closed hydrogen circulation loop, and through the circulation of the membrane 22 and the micro-nano bubble pump 23, high utilization and circulation efficiency are achieved, ensuring that the hydrogen-rich water machine can continuously and safely produce hydrogen-rich water. As new micro-nano bubbles are continuously injected into the water in the lower chamber 212, and as hydrogen is introduced into the water and rises, it carries the suspended micro-nano bubbles to the membrane 22 and releases hydrogen. This transforms the hydrogen dissolution process in the water from static surface dissolution to dynamic, cyclical dissolution, achieving the goal of preparing higher concentration hydrogen-rich water.

[0043] In this embodiment, the air inlet is the first interface 231, the outlet is the second interface 232, and the water inlet is the third interface 233. The first interface 231 is connected to the upper cavity 211, and the second interface 232 is connected to the lower cavity 212 via circulation pipes 222. The third interface 233 is connected to the lower cavity 212 via a water suction pipe 223. The circulation pipes 222 allow hydrogen gas to sequentially circulate through the upper cavity 211, the micro / nano bubble pump 23, and the lower cavity 212, forming a complete circulation path. The water suction pipe 223 provides a water inlet path for the micro / nano bubble pump 23.

[0044] As a further preferred embodiment, the hydrogen melting tank 21 is a pressure-resistant tank, and an air pump 224 is installed on the gas supply pipe 221. The hydrogen melting module 2 also includes a pressure sensor 24, which is located inside the upper cavity 211 and is used to detect the gas pressure in the upper cavity 211 and send a gas pressure signal. The pressure environment above atmospheric pressure can be generated inside the hydrogen melting tank 21 by the pressure-resistant tank and the air pump 224. The pressure environment of the hydrogen melting tank 21 provides a driving force to accelerate hydrogen dissolution, and the hydrogen in the upper cavity 211 can also permeate into the water through the membrane 22, increasing the hydrogen dissolution efficiency.

[0045] According to Henry's Law, at a given temperature and equilibrium state, the solubility of a gas in a liquid is directly proportional to its equilibrium partial pressure. Therefore, the higher the hydrogen pressure, the higher the solubility of hydrogen in water. The hydrogen melting tank 21 (pressure-resistant tank) combined with the gas pump 224 of the gas supply pipe 221 creates a pressure chamber above atmospheric pressure in the upper cavity 211 of the hydrogen melting tank 21. This pressure chamber works in conjunction with the circulating dissolution process, enabling hydrogen to quickly reach saturation in water. The pressure sensor 24 installed in the upper cavity 211 can monitor the hydrogen pressure in real time, ensuring the system operates within a safe pressure range.

[0046] Specifically, a first valve 234 is provided on the air supply pipe 221 between the air pump 224 and the lower chamber 212, and a second valve 235 is provided on the circulation pipe 222 between the first interface 231 and the upper chamber 211. Furthermore, the hydrogen-rich water machine also includes a control board 3, which is electrically connected to the micro-nano bubble pump 23, the pressure sensor 24, the first valve 234, and the second valve 235. The control board 3 is configured to receive a pressure signal, and when the pressure of the pressure signal exceeds the minimum pressure threshold of the control board 3, control the first valve 234 to reduce its opening to allow a low flow rate of hydrogen into the water in the lower chamber 212, and control the second valve 235 and the micro-nano bubble pump 23 to open. For example, the low flow rate of hydrogen is 0.5 mL / min, or any value between 0.2 mL / min and 2 mL / min, which can generate uniformly distributed and rapidly rising millimeter-sized bubbles in the water in the lower chamber 212.

[0047] During operation, in the first stage: control board 3 first opens the first valve 234 and closes the second valve 235. The hydrogen produced by the hydrogen production module 1 is pumped into the water in the lower chamber 212 by the gas pump 224, causing the internal pressure of the hydrogen melting tank 21 to quickly rise to the minimum pressure threshold. For example, the minimum pressure threshold can be 150 kPa, 160 kPa, 170 kPa, 180 kPa, 190 kPa, or 200 kPa. In the second stage: when the pressure sensor 24 detects that the pressure exceeds the minimum pressure threshold of control board 3, control board 3 automatically controls the first valve 234 to reduce its opening, opens the second valve 235, and starts the micro-nano bubble pump 23. At this time, the system enters the circulation dissolution mode. The gas supply pipe 221 introduces a low flow rate of hydrogen into the water in the lower chamber 212. The micro-nano bubble water generated by the micro-nano bubble pump 23 is injected into the lower chamber 212. The hydrogen rises and carries away the excess micro-nano bubbles in the water. The micro-nano bubbles flow upward with the hydrogen. When they pass through the membrane, they break the bubble water membrane and release the undissolved hydrogen. The undissolved hydrogen then gathers in the upper chamber 211, thus achieving the purpose of hydrogen circulation dissolution.

[0048] As the circulating dissolution continues, the hydrogen pressure inside the hydrogen melting tank 21 continuously increases. When the pressure sensor 24 detects that the pressure exceeds the maximum pressure threshold of the control board 3, the control board 3 automatically controls the first valve 234, the second valve 235, and the micro-nano bubble pump 23 to close, preventing excessive pressure inside the hydrogen melting tank 21 from causing damage and safety issues. For example, the maximum pressure threshold is 220 kPa, 250 kPa, 280 kPa, or 300 kPa. When the user has a drinking need, the hydrogen-rich water in the lower chamber 212 is discharged through the water outlet pipe 41, and then a certain volume of water is added to the lower chamber 212. A low flow rate of hydrogen is then introduced into the water in the lower chamber 212, directly entering the circulating dissolution mode.

[0049] As a further preferred embodiment, the hydrogen melting tank 21 includes an upper cover 213 and a lower tank 214, which are detachably connected. A membrane 22 is detachably installed between the upper cover 213 and the lower tank 214. A circulation pipe 222 connects the first interface 231 to the upper cavity 211, and the internal space of the upper cover 213 constitutes the upper cavity 211. A gas supply pipe 221 and a water suction pipe 223 connect to the lower tank 214. For example, the upper cover 213 and the lower tank 214 are made of stainless steel to ensure safety under pressure.

[0050] like Figure 3As shown, the lower opening of the upper cover 213 is provided with an external thread 215, and the inner side of the external thread 215 is provided with a first retaining edge 216. The upper opening of the lower tank 214 is provided with an internal thread 217, and the inner side of the internal thread 217 is provided with a second retaining edge 218. The upper cover 213 covers the upper opening of the lower tank 214, and the external thread 215 is connected to the internal thread 217, so that the first retaining edge 216 and the second retaining edge 218 clamp the film 22. A sealing ring 219 is also provided between the first retaining edge 216 and the second retaining edge 218, and the sealing ring 219 contacts the film 22.

[0051] As a consumable component of the hydrogen-rich water machine, the microporous structure of the membrane 22 will gradually fail during use. Thanks to its detachable threaded connection, the user can easily open the hydrogen melting tank 21 under normal pressure to disassemble, clean, or replace the membrane 22. The membrane 22 and the sealing ring 219 are clamped together by the first flange 216 of the upper cover 213 and the second flange 218 of the lower tank 214, ensuring reliable watertightness between the upper chamber 211 and the lower chamber 212 in a high-pressure working environment. This prevents the mixture of micro-nano bubbles and water from seeping into the upper chamber 211, thus ensuring the operational reliability of the micro-nano bubble pump 23.

[0052] like Figure 2 As shown, the lower tank 214 is provided with a first sub-cavity 2121, a second sub-cavity 2122 and a third sub-cavity 2123 that are connected vertically. The first sub-cavity 2121 is horizontally opposite to the internal thread portion 217. The horizontal cross-sections of the first sub-cavity 2121, the second sub-cavity 2122 and the third sub-cavity 2123 increase sequentially, and the horizontal cross-section of the second sub-cavity 2122 gradually increases from top to bottom.

[0053] In this design, the first sub-cavity 2121 of the lower tank 214 coincides with the position of the upper cavity 211. The second sub-cavity 2122 and the third sub-cavity 2123 together constitute the lower cavity 212. The horizontal cross-section of the second sub-cavity 2122 gradually increases from top to bottom, enabling the lower tank 214 to accommodate a larger volume of water. At the same time, it reduces the area of ​​the membrane 22 between the upper cavity 211 and the lower cavity 212, thereby improving the micropore utilization rate of the membrane 22.

[0054] It should be noted that the hydrogen production module 1 includes an ion exchange resin filter element 11 and a PEM electrolyzer 12. Pure water enters the ion exchange resin filter element 11, where ion exchange removes calcium and magnesium ions, reducing water hardness and preventing scaling. Simultaneously, it removes salts, further improving water purity and providing a stable supply of high-purity water for electrolytic hydrogen production. Furthermore, the PEM electrolyzer 12 directly generates hydrogen using a proton exchange membrane, avoiding side reactions. Combined with the ion exchange resin filter element 11, it effectively extends the service life of the PEM electrolyzer 12, minimizing the need for frequent maintenance.

[0055] As a further preferred option, the hydrogen-rich water machine also includes a buffer tank 4. A water outlet pipe 41 is provided between the buffer tank 4 and the lower chamber 212. The water outlet pipe 41 is equipped with a pressure regulating valve 42, and an exhaust valve 43 is also provided at the top of the buffer tank 4. The pressure regulating valve 42 can adjust the output pressure of the water outlet pipe 41 to ensure relatively stable internal pressure in the lower chamber 212. The buffer tank 4, as a water storage unit, can stabilize the water flow and pressure and also plays a role in secondary degassing. When water rich in micro-nano bubbles enters the buffer tank 4, the undissolved micro-nano bubbles will quickly rise and overflow due to the pressure reduction. This portion of hydrogen is discharged through the exhaust valve 43 at the top, making the hydrogen in the water closer to its truly dissolved state, with a stable concentration that is easier for the human body to absorb. It also prevents bubbles from affecting the taste when the user drinks the water.

[0056] In this embodiment, as Figure 1 As shown, the hydrogen-rich water machine also includes a purification module 5 and a pure water tank 6 connected to each other. The pure water tank 6 is located between the purification module 5 and the hydrogen melting tank 21. The pure water tank 6 is connected to the lower cavity 212 through a water inlet pipe 61. The water inlet pipe 61 is equipped with a third valve 63. The control board 3 is electrically connected to the third valve 63 to control the opening of the third valve 63.

[0057] The purification module 5 removes particulate impurities, suspended solids, odors, discoloration, residual chlorine, and organic matter from the raw water, providing pure water for subsequent hydrogen production via water electrolysis. This effectively prevents scaling and clogging of the membrane 22 and the micro-nano bubble pump 23, ensuring their service life. The pure water tank 6 serves as an intermediate water storage device. The control board 3 automatically controls the water supply pump 62 and the third valve 63 to open, automatically replenishing water according to the water level in the hydrogen melting tank 21, ensuring the hydrogen-rich water machine meets the continuous water needs of households or businesses.

[0058] It should be noted that the purification module 5 employs a multi-stage water purification filter design 51. For example, the first-stage filter is a PP cotton carbon rod composite filter, which performs initial filtration of the raw water to remove large particulate impurities and suspended solids, while also adsorbing odors and reducing turbidity. The second-stage filter is a granular activated carbon filter, which further adsorbs discoloration, odors, residual chlorine, and some organic pollutants. The third-stage filter is a carbon rod filter, which deeply adsorbs discoloration, odors, residual chlorine, and harmful substances such as organic matter. The fourth-stage filter is an RO reverse osmosis membrane filter 54, which, with the aid of pressure, allows water molecules to pass through the nanometer-level filtration precision of the reverse osmosis membrane, removing bacteria, heavy metals, salts, and harmful chemicals, providing pure water for subsequent electrolysis and hydrogen dissolution. Additionally, the purification module 5 is connected to a wastewater pipe 52, through which wastewater generated by reverse osmosis filtration can be discharged.

[0059] The hydrogen melting module 2 also includes a water level sensor 25, which is located in the lower cavity 212 and spaced apart below the membrane 22. The control board 3 is electrically connected to the water level sensor 25. The water level sensor 25 is used to detect the water level in the lower cavity 212 and send a water level signal. The control board 3 is configured to receive the water level signal and control the third valve 63 to close when the water level exceeds the maximum water level threshold of the control board 3. When the water level exceeds the maximum threshold, the control board 3 will control the water supply pump 62 and the third valve 63 to close, effectively preventing the high water pressure in the lower cavity 212 from damaging the membrane 22, while ensuring that there is enough water in the lower cavity 212 to dissolve hydrogen, providing an important safety guarantee for the hydrogen melting module 2.

[0060] In other embodiments of this application, such as Figure 4 , Figure 5 As shown, in order to meet different usage needs, a mineralization module 7 can be added to the hydrogen-rich water machine in the above embodiment. The mineralization module 7 is located between the purification module 5 and the pure water tank 6. The mineralization module 7 adopts a combination design of mineral modified filter element 71, small molecule activator 72 and secondary water purification filter element 73.

[0061] The mineral-modified filter element 71 releases trace mineral elements, such as calcium, magnesium, sodium, potassium, selenium, and zinc, into the flowing water, while simultaneously altering the pH of the pure water to achieve a slightly alkaline state, better meeting the requirements for healthy drinking water. The small molecule activator 72 breaks down larger water molecule clusters into smaller clusters, improving the water's activity and solubility. Water treated by the mineralization module 7 can be flushed through the flushing pipe 53, rinsing and discharging the filter elements in the purification module 5 and mineralization module 7, enabling cleaning and maintenance of the filter elements and ensuring their lifespan.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A hydrogen-rich water machine, characterized in that, include: Hydrogen production module (1), used for electrolyzing water to produce hydrogen; The hydrogen melting module (2) includes a hydrogen melting tank (21), a membrane (22) and a micro-nano bubble pump (23). The membrane (22) is disposed inside the hydrogen melting tank (21). The membrane (22) divides the hydrogen melting tank (21) into an upper cavity (211) and a lower cavity (212). The volume of the upper cavity (211) is less than one-tenth of the volume of the lower cavity (212). The lower cavity (212) contains water and the membrane (22) is spaced apart from the water surface. A gas supply pipe (221) connects the hydrogen production module (1) and the lower cavity (212) to introduce hydrogen into the water in the lower cavity (212) and carry out micro-nano bubbles in the water; The air inlet of the micro-nano bubble pump (23) is connected to the upper cavity (211), the water inlet of the micro-nano bubble pump (23) is connected to the lower cavity (212), and the outlet of the micro-nano bubble pump (23) is connected to the lower cavity (212). The film (22) is used to block water and break the water film of micro-nano bubbles to release undissolved hydrogen gas, so that hydrogen gas can pass through into the upper cavity (211).

2. The hydrogen-rich water machine according to claim 1, characterized in that, The air inlet is a first interface (231), the outlet is a second interface (232), and the water inlet is a third interface (233). The first interface (231) is connected to the upper cavity (211), and the second interface (232) is connected to the lower cavity (212) by a circulation pipe (222). The third interface (233) is connected to the lower cavity (212) by a water suction pipe (223).

3. The hydrogen-rich water machine according to claim 2, characterized in that, The hydrogen melting tank (21) is a pressure-resistant tank. The gas supply pipe (221) is equipped with a gas pump (224). The hydrogen melting module (2) also includes a pressure sensor (24). The pressure sensor (24) is located in the upper cavity (211) and is used to detect the gas pressure of the upper cavity (211) and send out a gas pressure signal. A first valve (234) is provided on the air supply pipe (221) between the air pump (224) and the lower cavity (212), and a second valve (235) is provided on the circulation pipe (222) between the first interface (231) and the upper cavity (211).

4. The hydrogen-rich water machine according to claim 3, characterized in that, The hydrogen-rich water machine also includes a control board (3), which is electrically connected to the micro-nano bubble pump (23), the pressure sensor (24), the first valve (234), and the second valve (235), respectively. The control board (3) is configured to receive the air pressure signal; When the pressure of the gas pressure signal exceeds the minimum pressure threshold of the control board (3), the first valve (234) is controlled to reduce its opening so that hydrogen gas is introduced into the water in the lower cavity (212) at a low flow rate, and the second valve (235) and the micro-nano bubble pump (23) are controlled to open.

5. The hydrogen-rich water machine according to any one of claims 2 to 4, characterized in that, The hydrogen melting tank (21) includes an upper cover (213) and a lower tank (214), the upper cover (213) and the lower tank (214) are detachably connected, and the membrane (22) is detachably installed between the upper cover (213) and the lower tank (214); The circulation pipe (222) between the first interface (231) and the upper cavity (211) is connected to the upper cover (213), and the internal space of the upper cover (213) constitutes the upper cavity (211); the air supply pipe (221) and the water suction pipe (223) are connected to the lower tank (214).

6. The hydrogen-rich water machine according to claim 5, characterized in that, The lower opening of the upper cover (213) is provided with an external thread (215), and the inner side of the external thread (215) is provided with a first stop (216). The upper opening of the lower tank (214) is provided with an internal thread (217), and the inner side of the internal thread (217) is provided with a second stop (218). The upper cover (213) covers the upper opening of the lower tank (214), and the external thread (215) is connected to the internal thread (217), so that the first flange (216) and the second flange (218) clamp the film (22); a sealing ring (219) is also provided between the first flange (216) and the second flange (218), and the sealing ring (219) contacts the film (22).

7. The hydrogen-rich water machine according to claim 6, characterized in that, The lower tank (214) is provided with a first sub-cavity (2121), a second sub-cavity (2122) and a third sub-cavity (2123) that are connected vertically in sequence. The first sub-cavity (2121) is horizontally opposite to the internal threaded part (217). The horizontal cross-sections of the first sub-cavity (2121), the second sub-cavity (2122), and the third sub-cavity (2123) increase sequentially, and the horizontal cross-section of the second sub-cavity (2122) gradually increases from top to bottom. The second sub-cavity (2122) and the third sub-cavity (2123) constitute the lower cavity (212).

8. The hydrogen-rich water machine according to any one of claims 1 to 4, characterized in that, The hydrogen-rich water machine also includes a buffer tank (4), and a water outlet pipe (41) is provided between the buffer tank (4) and the lower cavity (212). The water outlet pipe (41) is provided with a pressure regulating valve (42), and an exhaust valve (43) is provided on the upper part of the buffer tank (4).

9. The hydrogen-rich water machine according to claim 4, characterized in that, The hydrogen-rich water machine also includes a purification module (5) and a pure water tank (6) connected together. The pure water tank (6) is located between the purification module (5) and the hydrogen melting tank (21). The pure water tank (6) is connected to the lower cavity (212) through a water inlet pipe (61). The water inlet pipe (61) is equipped with a third valve (63), and the control board (3) is electrically connected to the third valve (63) to control the opening of the third valve (63).

10. The hydrogen-rich water machine according to claim 9, characterized in that, The hydrogen melting module (2) also includes a water level sensor (25), which is located in the lower cavity (212) and is spaced apart on the lower side of the thin film (22). The control board (3) is electrically connected to the water level sensor (25). The water level sensor (25) is used to detect the water level height in the lower cavity (212) and send a water level signal; the control board (3) is configured to receive the water level signal and control the third valve (63) to close when the water level height exceeds the maximum water level threshold of the control board (3).

Images