A portable hydrogen generator to prevent water overflow

Abstract

The embodiment of the present invention discloses a portable hydrogen generating device that prevents water overflow, including a hydrogen generating device and a gas-water separation device. The hydrogen generated by the hydrogen generating device is introduced into the gas-water separation device for gas-water separation treatment. The gas-water separation device includes a pressure chamber, which is a sealed box body, with a hydrogen output port on the top, a water drain port and a hydrogen input port on the bottom, the hydrogen output port is connected to the hydrogen outlet, and the water drain port is connected to the water tank; the hydrogen outlet is a microporous structure, and the rate at which hydrogen overflows from the hydrogen outlet is lower than the rate at which hydrogen supplied to the pressure chamber by the hydrogen generating device. The present invention uses a pressure chamber to collect water vapor brought out during the hydrogen production process, and uses the prepared hydrogen to press water back into the water tank within a certain period, without the need for additional driving elements, making the device more compact, light in weight, and easy to carry; the use cycle is long after adding water once, and no maintenance is required during the period, making it convenient to use.

Description

Technical Field

[0001] The invention relates to the field of civilian hydrogen preparation, and in particular to a portable hydrogen generation device that prevents water overflow. Background Art

[0002] The existing electrolytic hydrogen production device mainly immerses the electrolytic cell in water, generates hydrogen and oxygen by electrolysis, and then collects the hydrogen. The above structure takes up a large space and is inconvenient to carry. When generating hydrogen and oxygen, the gas will accumulate on the electrolytic sheet of the electrolytic cell, affecting the contact area between the electrolytic sheet and water, thereby affecting the electrolysis efficiency. During the electrolysis process, part of the water will pass through the ion membrane and be brought into subsequent components by the generated hydrogen. After the water brought out by the hydrogen accumulates to a certain amount, it needs to be dumped manually, which is cumbersome to use.

[0003] The existing method introduces the hydrogen generated by the hydrogen generating device into the hydrogen processing mechanism for processing. The hydrogen processing mechanism includes a pressure chamber, which is a sealed box body, with a hydrogen input port and a hydrogen output port on the top, and a drain port connected to the water tank on the bottom; the hydrogen output port is controlled by the first solenoid valve to open and close; the drain port is controlled by the second solenoid valve to open and close; in the drainage state, the first solenoid valve is closed, the second solenoid valve is opened, and the hydrogen cannot be discharged after entering the pressure chamber, and will gather in the pressure chamber, and the water in the pressure chamber will be discharged into the water tank through the drain port. The above method requires closing the first solenoid valve, so the hydrogen cannot be discharged continuously, affecting the use of hydrogen. In addition, if the first solenoid valve or the second solenoid valve fails, the hydrogen cannot be discharged or the water overflows from the pressure chamber. Furthermore, the above method needs to control the switching between the normal gas supply state and the drainage state by presetting the time or sensing the water level in the pressure chamber. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a portable hydrogen generation device that prevents water from overflowing, has a simple structure, does not require manual dumping of wastewater during the working process, is small in size, and is easy to carry.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a flood-proof portable hydrogen generator, comprising a hydrogen generator and a gas-water separation device, wherein the hydrogen generated by the hydrogen generator is introduced into the gas-water separation device for gas-water separation treatment, and the gas-water separation device comprises a pressure chamber, which is a sealed box body, and a hydrogen output port is provided on the top, a water drain port and a hydrogen input port are provided on the bottom, the hydrogen output port is connected to the hydrogen outlet port, and the water drain port is connected to the water tank;

[0006] The hydrogen outlet is a microporous structure, and the rate at which hydrogen overflows from the hydrogen outlet is lower than the rate at which the hydrogen generating device supplies hydrogen to the pressure vessel.

[0007] As an improvement of the above solution, the diameter of the hydrogen outlet is 0.4-0.5 μm.

[0008] As an improvement of the above solution, at least one baffle is provided in the pressure vessel, and the baffle is arranged between the hydrogen inlet and the hydrogen outlet. The hydrogen entering the pressure vessel from the hydrogen inlet collides with the baffle, and the moisture in the hydrogen flows along the baffle to the bottom of the pressure vessel.

[0009] As an improvement of the above solution, the baffle is connected to one side wall of the pressure chamber and is not connected to the other side wall, and two adjacent baffles are symmetrically arranged.

[0010] As an improvement of the above solution, a hydrogen inlet pipe connected to the hydrogen inlet port is provided in the pressure chamber, the outlet of the hydrogen inlet pipe is located at the upper part of the pressure chamber, and a notch is provided at the top of the baffle.

[0011] As an improvement of the above scheme, the hydrogen generation device includes a water tank and an electrolytic cell; the electrolytic cell includes a first fixed plate, a first insulating plate, an anode electrolytic plate, a first titanium fiber plate, an ion membrane, a second titanium fiber plate, a cathode electrolytic plate, a second insulating plate and a second fixed plate arranged in sequence, the anode electrolytic plate is provided with a water flow groove, the water flow groove penetrates the anode electrolytic plate, and the water flow groove is curved from bottom to top; the lower part of the water flow groove is connected to the water inlet, and the upper part is connected to the water outlet; the cathode electrolytic plate is provided with an air outlet, and the air outlet is connected to the first titanium fiber plate; the water tank is connected to the water inlet and the water outlet through a conduit, and the connection position of the conduit connecting the water inlet and the water tank is lower than the connection position of the conduit connecting the water outlet and the water tank.

[0012] As an improvement on the above scheme, a silicone sealing frame is provided on the periphery of the first titanium fiber plate, the ion membrane and the second titanium fiber plate. When the first fixed plate and the second fixed plate apply pressure to the first conductive plate and the second conductive plate, the first conductive plate and the second conductive plate press the silicone sealing frame to form a sealed space between the first conductive plate and the second conductive plate; the first conductive plate abuts against the first titanium fiber plate, the second conductive plate abuts against the second titanium fiber plate, and the first titanium fiber plate and the second titanium fiber plate evenly clamp the ion membrane.

[0013] As an improvement of the above scheme, a cover is provided on the top of the water tank, and the cover is provided with a water-stopping ventilation cavity; a lower air vent, an upper air vent and a accommodating cavity are provided in the water-stopping ventilation cavity, and a round ball is provided in the accommodating cavity, and the diameter of the round ball is respectively larger than the diameter of the lower air vent and the upper air vent.

[0014] As an improvement of the above solution, a hand-held portion higher than the plane where the cover is located is provided on the top of the cover, and the top surface of the hand-held portion is ridge-shaped; the upper vent is provided on the top surface of the hand-held portion.

[0015] Implementing the embodiments of the present invention has the following beneficial effects:

[0016] The pressure chamber of the present invention is a sealed box body, with a hydrogen output port on the top, and a hydrogen input port and a drain port on the bottom. The drain port is connected to a water tank, and the hydrogen output port is connected to a hydrogen outlet of a microporous structure, to ensure that the discharge rate of hydrogen in the pressure chamber is lower than the entry rate of hydrogen, hydrogen continuously enters the pressure chamber, and hydrogen continuously is discharged from the hydrogen outlet, and the pressure in the pressure chamber continuously increases. When the pressure in the pressure chamber increases to a preset value, the water in the pressure chamber is automatically discharged into the water tank, thereby preventing the water in the pressure chamber from overflowing.

[0017] At least one baffle is provided in the pressure vessel of the present invention, and the baffle is arranged between the hydrogen inlet and the hydrogen outlet. The hydrogen entering the pressure vessel from the hydrogen inlet collides with the baffle, and the moisture in the hydrogen flows along the baffle to the bottom of the pressure vessel, thereby effectively improving the gas-water separation effect.

[0018] The present invention utilizes a pressure chamber to collect water vapor brought out during the hydrogen production process, and uses the prepared hydrogen to press water back into the water tank within a certain period. No additional driving components and electronic components are required, making the device more compact, light and easy to carry. The use cycle is long after adding water once, and no maintenance is required during the period, making it easy to use.

[0019] The anode electrolysis plate of the present invention is provided with a through-hole water flow groove to ensure that water and the ion membrane are fully in contact, and the generated oxygen can be discharged in time. Since the anode electrolysis plate does not use a blind hole water flow groove, the thickness of the anode electrolysis plate can be less than or equal to 1 mm, effectively reducing the weight and volume of the overall hydrogen generation device. Since the cost of the titanium substrate is very high, the thickness of the anode electrolysis plate of the present invention is reduced from the existing 2 mm to less than 1 mm, effectively reducing the cost.

[0020] The cover of the present invention is provided with a water-stopping ventilation cavity, in which a lower ventilation hole, an upper ventilation hole and a receiving cavity are provided, and a round ball is provided in the receiving cavity. The cover has a simple structure and eliminates components such as springs. It not only prevents water leakage, but also effectively prolongs the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a portable hydrogen generation device to prevent water overflow according to the present invention;

[0022] Figure 2 It is a schematic diagram of the assembly state of an electrolytic cell of a portable hydrogen generation device that prevents water overflow according to the present invention;

[0023] Figure 3 It is an exploded view of an electrolytic cell of a portable hydrogen generation device that prevents water overflow according to the present invention;

[0024] Figure 4It is a structural schematic diagram of an anode electrolytic plate of a portable hydrogen generation device for preventing water overflow according to the present invention;

[0025] Figure 5 It is a structural schematic diagram of a cover of a portable hydrogen generating device that prevents water from overflowing according to the present invention;

[0026] Figure 6 It is a structural schematic diagram of a gas-water separation device of a portable hydrogen generation device to prevent water overflow according to the present invention;

[0027] Figure 7 is a cross-sectional view of a pressure chamber of a multifunctional portable hydrogen generation device of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection between a multifunctional portable hydrogen generating device and a hydrogen container of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0030] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a portable hydrogen generator that prevents water from overflowing, including a hydrogen generator and a gas-water separation device. The hydrogen generator is used to generate hydrogen, and the gas-water separation device is used to humidify the generated hydrogen and treat the moisture brought out during the hydrogen generation process.

[0031] Hydrogen generation device

[0032] See also Figure 1 The hydrogen generation device comprises a water tank 1 and an electrolyzer 2, see Figure 2The electrolytic cell 2 includes a first fixed plate 21, a first insulating plate 22, an anode electrolytic plate 23, a first titanium fiber plate 24, an ion membrane 25, a second titanium fiber plate 26, a cathode electrolytic plate 27, a second insulating plate 28 and a second fixed plate 29 which are arranged in sequence. The anode electrolytic plate 23 is provided with a water flow groove 231, which runs through the anode electrolytic plate 23. The water flow groove 231 is curved from bottom to top, and the lower part of the water flow groove 231 is connected to the water inlet 232, and the upper part is connected to the water outlet 233; the cathode electrolytic plate 27 is provided with an air outlet 271, and the air outlet 271 is connected to the first titanium fiber plate 24. The first fixing plate 21 and the second fixing plate 29 can be made of aluminum alloy, the first insulating plate 22 and the second insulating plate 28 can be silicone plates, rubber plates or plastic plates, the anode electrolytic plate 23 needs to be a titanium substrate, the cathode electrolytic plate 27 can be a general conductive metal plate, and the surface of the ion membrane 25 can be coated or electroplated with a precious metal catalyst, such as a platinum catalyst. The water tank 1 is connected to the water inlet 232 and the water outlet 233 through a conduit, and the connection position of the conduit connecting the water inlet 232 and the water tank 1 is lower than the connection position of the conduit connecting the water outlet 233 and the water tank 1.

[0033] During operation, the cathode electrolytic plate 27 is connected to the negative electrode of the DC power supply, and the anode electrolytic plate 23 is connected to the positive electrode of the DC power supply. The cathode electrolytic plate 27 transmits the electric field to the second titanium fiber plate 26, and the anode electrolytic plate 23 transmits the electric field to the first titanium fiber plate 24, so that a potential difference is formed on both sides of the ion membrane 25. The hydrogen ions and cations in the water move in a directional manner under the action of the potential difference, and hydrogen is generated on one side of the ion membrane 25 and oxygen is generated on the other side. The generated hydrogen is transmitted back to the cathode electrolytic plate 27 through the second titanium fiber plate 26, and the generated oxygen is transmitted back to the anode electrolytic plate 23 through the first titanium fiber plate 24.

[0034] The water tank 1 may be provided with a water level sensor and a TDS sensor. The water level sensor is used to detect the water level of the water tank 1. Since the ion membrane is a component of the electrolytic cell, if there are too many mineral ions in the water during the catalytic electrolysis process, the gaps in the ion membrane will be blocked, causing the ion membrane to affect the catalytic efficiency and shorten its life. Therefore, the TDS sensor monitors the TDS of the water in the water tank in real time. If the TDS is too large, it stops working and the indicator light alarms. The main part of the TDS sensor is the water quality detection probe, which uses a pure titanium screw needle.

[0035] In the present invention, a row of bolts 3 are arranged at the edges of the first fixing plate 21 and the second fixing plate 29 , so that uniform pressure is applied to the various plates between the first fixing plate 21 and the second fixing plate 29 . Under the support of the above pressure, a sealed chamber is formed between the anode electrolytic plate 23 and the ion membrane 25, and between the cathode electrolytic plate 27 and the ion membrane 25 through the rubber sealing frame 20; a first titanium fiber plate 24 and a second titanium fiber plate 26 with a flat surface are arranged in the sealed chamber, and the hydrophobicity and air permeability of the first titanium fiber plate 24 and the second titanium fiber plate 26 are used to ensure that the surface of the ion membrane 25 is continuously covered with water, and the generated gas can be discharged from the first titanium fiber plate 24 and the second titanium fiber plate 26 in time; the conductivity of the first titanium fiber plate 24 and the second titanium fiber plate 26 is used to form a uniform electric field on both sides of the ion membrane 25 to ensure the stable progress of the electrolysis reaction; the physical properties of the first titanium fiber plate 24 and the second titanium fiber plate 26, which are high in strength, dense in pores, and flat and smooth in surface, are used to clamp various parts of the ion membrane 25 to prevent the ion membrane 25 from being repeatedly expanded and contracted by periodic force during the electrolysis process, thereby extending the service life of the ion membrane 25.

[0036] At the anode reaction end, it is necessary to ensure that water and the ion membrane 25 are in full contact, and the generated oxygen can be discharged in time. The existing anode electrolysis plate needs to be milled to form a water flow groove. Since the material of the anode electrolysis plate is titanium, the tool is easy to wear during the cutting of the titanium substrate, and the tool cost is relatively high, resulting in excessively high milling processing costs and low production and processing efficiency. In addition, there is also a punched titanium mesh pad between the anode electrolysis plate and the first titanium fiber plate. Since the four sides of the titanium mesh are uneven, water can flow through the gap formed with the contact surface of the anode electrolysis plate, but the waterway is narrow and the water flow is not particularly ideal. The present invention adopts a through-hole water flow groove 231, that is, the anode electrolysis plate 23 is punched to form a through-hole water flow groove 231, so that both water flow and air flow are unobstructed.

[0037] Since the water flow trough 231 of the present invention is a through-hole structure, the anode electrolysis plate of the present invention can be directly processed by a sheet metal punching and blanking die, which has high processing efficiency and low cost. Since the anode electrolysis plate 23 does not use a blind hole water flow trough, the thickness of the anode electrolysis plate 23 can be less than or equal to 1 mm, which effectively reduces the weight and volume of the overall hydrogen generation device. Since the cost of the titanium substrate is very high, the thickness of the anode electrolysis plate 23 of the present invention is reduced from the existing 2 mm to less than 1 mm, which effectively reduces the cost. The shape of the water flow trough 231 of the present invention is not limited to a curved shape, and other water flow troughs 231 of different shapes all fall within the protection scope of the present invention.

[0038] Preferably, the anode electrolytic plate 23 of this embodiment is provided with two groups of symmetrically arranged water flow grooves 231, and the two groups of water flow grooves 231 are independent of each other. The water entering from the lower water inlet 232 is divided into two paths and flows in the water flow grooves 231. The two paths of water flow can quickly replenish water for the first titanium fiber plate 24; in addition, the generated oxygen bubbles are respectively discharged from the water flow in the two groups of water flow grooves 231 to the water outlet 233, which can ensure the continuous discharge of oxygen and thus ensure the smoothness of the hydrogen production process. Since the water flow groove 231 of the invention runs through the anode electrolytic plate 23, the generated oxygen bubbles will not gather too quickly in the water flow groove 231, become large bubbles, and hinder the flow of water. The small bubbles in the water flow groove 231 move upward, and at the same time bring the power of upward flow to the water flow, so that only the water inlet 232 and the water outlet 233 need to be directly connected to the water tank 1, and there is no need to set an active power device such as a water pump, and the water flow can spontaneously enter from the water inlet 232 and flow out from the water outlet 233.

[0039] Preferably, the width of the position where the water flow groove 231 is connected to the water inlet 232 and the water outlet 233 is greater than the width of the remaining parts to prevent the water flow in the entire water flow groove from being unable to flow or the gas pressure from increasing abnormally due to blockage of the water inlet or outlet channel.

[0040] As mentioned above, in order to make the electrolysis reaction of water in the first titanium fiber plate 24, the ion membrane 25 and the second titanium fiber plate 26 rapid and stable, it is necessary to ensure that the first titanium fiber plate 24 and the second titanium fiber plate 26 are evenly pressed against the surface of the ion membrane 25, and at the same time provide them with a watertight and airtight environment. To this end, the first titanium fiber plate 24, the ion membrane 25 and the second titanium fiber plate 26 are provided with a silicone sealing frame 20 on the periphery. When the first fixed plate 21 and the second fixed plate 29 apply pressure to the anode electrolytic plate 23 and the cathode electrolytic plate 27, the anode electrolytic plate 23 and the cathode electrolytic plate 27 press the silicone sealing frame 20 to form a sealed space between the anode electrolytic plate 23 and the cathode electrolytic plate 27; the anode electrolytic plate 23 abuts against the first titanium fiber plate 24, the cathode electrolytic plate 27 abuts against the second titanium fiber plate 26, and the first titanium fiber plate 24 and the second titanium fiber plate 26 evenly clamp the ion membrane 25. The ion membrane 25 extends from the four edges of the first titanium fiber plate 24 and the second titanium fiber plate 26 and is clamped by the silicone sealing frame 20; a sealed water flow chamber is formed between the anode electrolytic plate 23, the silicone sealing frame 20 and the ion membrane 25, and a sealed hydrogen chamber is formed between the cathode electrolytic plate 27, the rubber sealing frame 20 and the ion membrane 25. Through the above structure, the close contact between the first titanium fiber plate 24, the ion membrane 25 and the second titanium fiber plate 26 is not affected by the assembly accuracy, and the peripheral sealing is completed by the elastic silicone sealing frame 20, which reduces the tolerance accuracy requirements of each component and is more conducive to assembly.

[0041] The oxygen generated by the electrolyzer re-enters the water tank 1 through the water outlet 233, so the water tank 1 must have an exhaust function. In addition, in order to improve the portability of the device, the water tank 1 should be able to prevent water from pouring out while being able to exhaust. To this end, the top of the water tank 1 is provided with a cover 11, see Figure 5 , the cover 11 is provided with a water-stopping vent cavity 111; the water-stopping vent cavity 111 is provided with a lower vent hole 112, an upper vent hole 113 and a receiving cavity 114, and a round ball 115 is provided in the receiving cavity 114. Specifically, the diameter of the round ball 115 is larger than the diameter of the lower vent hole 112 and the upper vent hole 113 respectively; in the initial state, the round ball 115 blocks the lower vent hole 112, and the upper vent hole 113 is connected to the receiving cavity 114. When the air pressure in the water tank 1 is greater than the ambient air pressure, the gas in the water tank 1 pushes the round ball 115 to move upward, and the gas in the water tank 1 enters the receiving cavity 114 through the lower vent hole 112, and then is discharged through the upper vent hole 113. When the device is tilted, the water in the water tank 1 flows into the receiving cavity 114 through the lower vent hole 112, pushing the round ball 115 to block the upper vent hole 113 to prevent the water in the water tank 1 from flowing out. The cover structure of this solution is simple, and components such as springs are omitted, which effectively increases the service life of the device. Preferably, the ball 115 is a steel ball.

[0042] It should be noted that when the air pressure in the water tank 1 is greater than the ambient air pressure, the thrust generated by the gas in the water tank 1 on the ball 115 is not enough to push the ball to block the upper vent 113. The technicians can design it according to the size, weight and size of the ball, and the present invention does not make any specific limitation.

[0043] Preferably, a handle portion 116 is provided on the top of the cover 11, which is higher than the plane where the cover is located, and the top surface of the handle portion 116 is ridge-shaped; the upper vent 113 is provided on the top surface of the handle portion 116. In daily use, dust is not easily accumulated on the top surface of the handle portion 116 that is higher than the plane where the cover is located, and the ridge-shaped top surface is not easily completely covered by debris. Therefore, the upper vent 113 provided thereon is not easily blocked, ensuring reliable use.

[0044] Gas-water separation device

[0045] See also Figure 6 The hydrogen generated by the hydrogen generating device is introduced into the gas-water separation device for gas-water separation treatment. The gas-water separation device comprises a pressure chamber 4, which is a sealed box body, with a hydrogen output port 41 on the top, a hydrogen input port 42 and a water outlet 43 on the bottom; the hydrogen output port 42 is connected to the hydrogen outlet 5, and the water outlet 43 is connected to the water tank 1.

[0046] See also Figure 7, at least one baffle 44 is provided in the pressure chamber 4, and the baffle 44 is arranged between the hydrogen inlet 42 and the hydrogen outlet 41. The hydrogen entering the pressure chamber 4 from the hydrogen inlet 42 collides with the baffle 44, and the water in the hydrogen flows to the bottom of the pressure chamber 4 along the baffle 44. Specifically, the baffle 44 is connected to one side wall of the pressure chamber 4 and is not connected to the other side wall. In order to increase the moving distance of the hydrogen in the pressure chamber 4, two adjacent baffles 44 are symmetrically arranged, that is, two adjacent baffles 44 are respectively connected to the side walls on both sides of the pressure chamber 4. In order to further improve the drying effect and prevent the water separated in the pressure chamber 4 from re-wetting the hydrogen, a hydrogen inlet pipe 45 connected to the hydrogen inlet 42 is provided in the pressure chamber 4, and the gas outlet of the hydrogen inlet pipe 45 is located at the upper part of the pressure chamber 4. Preferably, a notch 441 is provided on the top of the baffle 44 , and the outlet of the hydrogen inlet pipe 45 is flush with the notch 441 , so that the hydrogen coming out of the outlet collides with the baffle 44 , wherein the notch 441 can increase the collision chance of the hydrogen and the baffle 44 .

[0047] The hydrogen outlet 5 is a microporous structure. When the rate at which hydrogen overflows from the hydrogen outlet 5 is lower than the rate at which the hydrogen generating device supplies hydrogen to the pressure chamber 4, the pressure in the pressure chamber 4 increases, and the water in the pressure chamber 4 is automatically discharged into the water tank 1. The rate at which the hydrogen generating device supplies hydrogen to the pressure chamber 4 is substantially constant, and the rate at which hydrogen overflows from the hydrogen outlet 5 is related to the size of the hydrogen outlet 5 and the pressure chamber 4. When the rate at which the hydrogen generating device supplies hydrogen to the pressure chamber is constant and the size of the pressure chamber remains unchanged, the larger the diameter of the hydrogen outlet 5, the faster the rate at which hydrogen overflows from the hydrogen outlet 5. When the discharge rate of hydrogen is greater than the entry rate of hydrogen, the pressure in the pressure chamber 4 will not increase. Only when the diameter of the hydrogen outlet 5 is small enough can the discharge rate of hydrogen in the pressure chamber be ensured to be less than the entry rate of hydrogen. In addition, the diameter of the hydrogen inlet 42 is greater than the diameter of the hydrogen outlet 41. Preferably, the diameter of the hydrogen outlet 5 is 0.4-0.5 μm. If the diameter of the hydrogen outlet 5 is too small, less than 0.4 μm, since part of the hydrogen still contains a small amount of water, the hydrogen outlet 5 is easily blocked by hydrogen, and the hydrogen cannot be discharged from the hydrogen outlet 5. In a normal state, hydrogen continues to enter the pressure chamber 4, hydrogen continues to be discharged from the hydrogen outlet 5, and the pressure in the pressure chamber 4 continues to increase. When the pressure in the pressure chamber 4 increases to a preset value, the water in the pressure chamber 4 is automatically discharged into the water tank 1, thereby preventing the water in the pressure chamber 4 from overflowing.

[0048] It should be noted that the hydrogen discharged from the hydrogen outlet 5 is dry hydrogen and can be used directly. When the hydrogen outlet 5 is connected to the inhalation pipe, the hydrogen can be supplied to the user for inhalation. Figure 8When the hydrogen port 5 is connected to the hydrogen container 6, hydrogen can be added to the liquid for drinking by the user, and the liquid can be water, juice, tea, milk, milk tea and other beverages. The output pressure of hydrogen varies with different application modes.

[0049] Specifically, when the hydrogen is supplied to the user for direct inhalation, the output pressure of the hydrogen is in a normal state; when the hydrogen needs to be introduced into the liquid by the hydrogen container 6, the hydrogen is in a pressurized state. In order to switch between the two states, the drain port 43 is controlled to open and close by a solenoid valve 46.

[0050] In the normal state, the solenoid valve 46 is open, the discharge rate of hydrogen in the pressure chamber 4 is lower than the entry rate of hydrogen, the pressure in the pressure chamber 4 increases, and the water in the pressure chamber 4 is discharged into the water tank 1 through the drain port 43. After the water in the pressure chamber 4 is drained, the pressure in the pressure chamber 4 is normal, and the hydrogen outlet 5 discharges non-pressurized hydrogen;

[0051] In the pressurized state, the solenoid valve 46 is closed, the discharge rate of hydrogen in the pressure chamber 4 is lower than the entry rate of hydrogen, the pressure in the pressure chamber 4 increases, the water in the pressure chamber 4 cannot be discharged, the pressure in the pressure chamber 4 continues to increase, and the hydrogen outlet 5 discharges pressurized hydrogen.

[0052] It should be noted that in order to ensure that hydrogen can be quickly added to the liquid, the pressure in the pressure chamber is 0.3-0.8 kpm in the pressurized state. In the normal state, the pressure in the pressure chamber is the standard atmospheric pressure.

[0053] The time for adding hydrogen into the liquid will not last very long, that is, the equipment is in a pressurized state for a very short time, generally a few seconds, and the water in the pressure chamber will not overflow within a few seconds.

[0054] When the device is shut down from a pressurized state or a normal state, the solenoid valve 46 will automatically open, so that the pressure chamber 4 and the water tank 1 are connected. Since the hydrogen generated by the hydrogen generating device has a certain temperature, the hydrogen discharged from the hydrogen outlet 5 has the same temperature. When the device is shut down, since the hydrogen outlet 5 is very small, the hydrogen at the hydrogen outlet 5 cools and condenses into water droplets to block the hydrogen outlet 5. At the same time, the hydrogen in the pressure chamber 4 also cools, causing the pressure in the pressure chamber 4 to be lower than the pressure in the water tank 1. The water in the water tank 1 flows back into the pressure chamber 4. When the device is restarted, the water in the pressure chamber 4 will be discharged from the hydrogen outlet 5 along with the hydrogen.

[0055] In order to solve the above problem, an air input port 47 is further provided on the top of the pressure chamber 4, and the air input port 47 is connected to a one-way valve 48. In the shutdown state, the one-way valve 48 and the solenoid valve 46 are opened, and the external air enters the pressure chamber 4 from the air input port 47 through the one-way valve 48, so that the pressure of the pressure chamber 4 and the water tank 1 is balanced, ensuring that the water level in the pressure chamber 4 is in a normal state, and when the machine is turned on again, the water in the pressure chamber 4 will not be discharged along with the hydrogen.

[0056] In order to ensure that hydrogen can be added to the liquid and prevent the hydrogen in the liquid from quickly overflowing, the hydrogen container 6 is provided with a plurality of nano-scale micropores 61. Under a certain pressure, hydrogen is discharged from the micropores 61 to form a large number of tiny bubbles that are integrated into the liquid.

[0057] Accordingly, an embodiment of the present invention further provides a hydrogen generation method, which uses the above-mentioned anti-overflow portable hydrogen generation device, comprising:

[0058] 1) Add water into the water tank, turn on the power supply, connect the cathode electrolytic plate to the negative pole of the DC power supply, and connect the anode electrolytic plate to the positive pole of the DC power supply to obtain hydrogen and oxygen;

[0059] 2) The obtained oxygen enters the first titanium fiber plate, gathers in the first titanium fiber plate and rises to enter the water outlet of the anode electrolytic plate, re-enters the water tank through the connecting pipe between the water outlet and the water tank, drives the water in the water tank to enter the electrolytic cell from the water inlet and circulate out from the water outlet;

[0060] 3) The obtained hydrogen enters the gas-water separation device;

[0061] 4) When the user needs to inhale hydrogen, connect the inhalation pipe to the hydrogen outlet, open the solenoid valve, the discharge rate of hydrogen in the pressure chamber is lower than the entry rate of hydrogen, the pressure in the pressure chamber increases, and the water in the pressure chamber is discharged into the water tank through the drain port. After the water in the pressure chamber is drained away, the pressure in the pressure chamber is normal, and no pressurized hydrogen is discharged from the hydrogen outlet;

[0062] When the user needs to add hydrogen to the liquid, the hydrogen container is connected to the hydrogen outlet, the solenoid valve is closed, the discharge rate of hydrogen in the pressure chamber is lower than the entry rate of hydrogen, the pressure in the pressure chamber increases, the water in the pressure chamber cannot be discharged, the pressure in the pressure chamber continues to increase, and the pressurized hydrogen is discharged from the hydrogen outlet.

[0063] In order to ensure that hydrogen can be quickly added to the liquid, the pressure in the pressure chamber is 0.3-0.8 kpm in the pressurized state. In the normal state, the pressure in the pressure chamber is the standard atmospheric pressure.

[0064] The present invention utilizes a pressure chamber to collect water vapor brought out during the hydrogen production process, and uses the prepared hydrogen to press water back into the water tank within a certain period, without the need for additional driving elements, making the device more compact, light in weight, and easy to carry; the use cycle is long after adding water once, and no maintenance is required during the period, making it easy to use.

[0065] The gas-water separation device of the present invention realizes switching between pressurized and non-pressurized states through the cooperation of the pressure chamber, the one-way valve and the solenoid valve, so that the hydrogen produced by the device of the present invention can be directly inhaled by the user or added to liquid for the user to drink.

[0066] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A portable hydrogen generator to prevent water overflow, comprising a hydrogen generator and a gas-water separation device, wherein the hydrogen generated by the hydrogen generator is introduced into the gas-water separation device for gas-water separation treatment, characterized in that: The gas-water separation device comprises a pressure chamber, which is a sealed box body, with a hydrogen output port on the top, a water outlet and a hydrogen input port on the bottom, the hydrogen output port is connected to the hydrogen outlet, and the water outlet is connected to the water tank; The hydrogen outlet is a microporous structure, the diameter of the hydrogen outlet is 0.4-0.5 μm, and the rate at which hydrogen overflows from the hydrogen outlet is lower than the rate at which the hydrogen generating device supplies hydrogen to the pressure vessel; A cover is provided on the top of the water tank, and a water-stopping ventilation cavity is provided on the cover; a lower vent hole, an upper vent hole and a receiving cavity are provided in the water-stopping ventilation cavity, and a round ball is provided in the receiving cavity, and the diameter of the round ball is respectively larger than the diameter of the lower vent hole and the upper vent hole.

2. The portable hydrogen generator for preventing water overflow according to claim 1, characterized in that: At least one baffle is provided in the pressure vessel, and the baffle is arranged between the hydrogen inlet and the hydrogen outlet. The hydrogen entering the pressure vessel from the hydrogen inlet collides with the baffle, and the moisture in the hydrogen flows along the baffle to the bottom of the pressure vessel.

3. The anti-flood portable hydrogen generator according to claim 2, characterized in that: The baffle is connected to one side wall of the pressure chamber and is not connected to the other side wall, and two adjacent baffles are symmetrically arranged.

4. The portable hydrogen generator for preventing water overflow according to claim 3, characterized in that: A hydrogen inlet pipe connected to the hydrogen inlet port is arranged in the pressure chamber, a gas outlet of the hydrogen inlet pipe is located at the upper part of the pressure chamber, and a notch is arranged at the top of the baffle.

5. The portable hydrogen generator for preventing water overflow according to claim 1, characterized in that: The hydrogen generating device comprises a water tank and an electrolytic cell; the electrolytic cell comprises a first fixed plate, a first insulating plate, an anode electrolytic plate, a first titanium fiber plate, an ion membrane, a second titanium fiber plate, a cathode electrolytic plate, a second insulating plate and a second fixed plate which are arranged in sequence; the anode electrolytic plate is provided with a water flow groove which penetrates the anode electrolytic plate and is curved from bottom to top; the lower part of the water flow groove is connected with a water inlet and the upper part is connected with a water outlet; an air outlet is provided on the cathode electrolytic plate, and the air outlet is connected with the first titanium fiber plate; the water tank is connected with the water inlet and the water outlet through a conduit, and the connection position of the conduit connecting the water inlet and the water tank is lower than the connection position of the conduit connecting the water outlet and the water tank.

6. The portable hydrogen generator for preventing water overflow according to claim 5, characterized in that: A silicone sealing frame is provided on the periphery of the first titanium fiber plate, the ion membrane and the second titanium fiber plate. When the first fixed plate and the second fixed plate apply pressure to the first conductive plate and the second conductive plate, the first conductive plate and the second conductive plate press the silicone sealing frame to form a sealed space between the first conductive plate and the second conductive plate; the first conductive plate abuts against the first titanium fiber plate, the second conductive plate abuts against the second titanium fiber plate, and the first titanium fiber plate and the second titanium fiber plate evenly clamp the ion membrane.

7. The portable hydrogen generator for preventing water overflow according to claim 1, characterized in that: The top of the cover is provided with a hand-held portion which is higher than the plane where the cover is located, and the top surface of the hand-held portion is ridge-shaped; the upper vent hole is provided on the top surface of the hand-held portion.

Images