Hydrogen and oxygen generator with circulation and filtration function

Abstract

We provide a hydrogen and oxygen generating device with a circulation and filtration function. [Solution] The device includes an outer casing and a water tank (200), a hydrogen-oxygen generation module (300), a control board (400), and a circulating filtration mechanism (500) installed therein. A water storage cavity is formed within the water tank, and the water storage cavity is provided with a water inlet. The hydrogen-oxygen generation module is connected to the water storage cavity via a first circulation pipe, forming an electrolyte circulation circuit, and is electrically connected to the control board. The circulating filtration mechanism includes a pump (501) and a filtration component (502) arranged in series. The pump is connected between the water storage cavity and the filtration component via a second circulation pipe, forming a filtration circulation circuit. The filtration component is configured to remove at least some metal ions from the electrolyte, thereby maintaining the purity of the electrolyte and preventing a decrease in electrolysis efficiency. This configuration enables automatic circulating filtration of the electrolyte in the hydrogen-oxygen generation device, improving electrolysis efficiency and extending the device's lifespan.

Description

[Technical Field]

[0001] The present invention relates to the field of water electrolysis, and more particularly to a hydrogen and oxygen generating device with a circulation and filtration function. [Background technology]

[0002] As the industrialization of hydrogen and oxygen generation technology progresses, the range of applications for water electrolysis hydrogen generators continues to expand in the fields of medicine and health, clean energy, etc. Chinese Patent CN202020743222.3 discloses a water circulation electrolysis hydrogen generator that integrates a water tank module and a hydrogen and oxygen generation module, in which electrolyte is continuously supplied from a water tank to the hydrogen and oxygen generation module, and hydrogen generated by electrolysis is output after gas-liquid separation.

[0003] However, when roughly filtered tap water is used as the electrolyte, the inclusion of metal ions is unavoidable. Furthermore, the corrosion of the electrode material during the electrolysis process of the device causes the formation of Fe. 2+ , Cu 2+ , Ca 2+ , Mg 2+ Metal ions such as Fe are generated. 2+ and Cu 2+ Ca is prone to undergo reduction reactions on the electrode surface of the hydrogen and oxygen generation module, and adheres to the electrode surface as a metal deposit. This causes an insulating layer to form and changes the electrochemical properties of the electrode, resulting in increased resistance to the electrolytic reaction, a slower rate of hydrogen generation, and a shorter lifespan of the device. 2+ and Mg 2+ It reacts with alkaline catalysts (such as KOH and NaOH) in water to produce precipitates of CaCO3 and Mg(OH)2, which can cause blockages in pipes. Therefore, there is an urgent need to develop a hydrogen and oxygen generator with a filtration function that can deeply purify and remove metal ions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] China patent CN202020743222.3 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to solve the problem of the prior art that the electrolyte cannot remove metal ions generated during long-term cyclic use, thereby affecting electrolysis efficiency and product life. Specifically, an embodiment of the present invention provides a hydrogen and oxygen generator with a cyclic filtration function to solve the problem of the prior art that the electrolyte cannot remove metal ions generated during long-term cyclic use, thereby affecting electrolysis efficiency and product life. [Means for solving the problem]

[0006] The objectives of the present invention can be achieved by the following technical solutions: The present invention provides a hydrogen and oxygen generating device with a circulation and filtration function, which includes an outer casing, a water tank, a hydrogen and oxygen generating module, a control board, and a circulation and filtration mechanism installed in the outer casing.

[0007] A water storage cavity is formed inside the water tank, and a water supply port is provided in the water storage cavity.

[0008] The hydrogen and oxygen generating module is connected to the reservoir cavity via a first circulation pipe to form an electrolyte circulation circuit, and is electrically connected to the control board.

[0009] The circulation filtration mechanism includes a pump and a filtration component arranged in series, and the pump is connected between the water storage cavity and the filtration component via a second circulation pipe to form a filtration circulation circuit.

[0010] wherein the filtering component is configured to remove at least a portion of the metal ions in the electrolyte.

[0011] In a preferred embodiment, the filtration component includes a tubular casing and an ion filtration filter core disposed within the tubular casing, the ion filtration filter core including an anion / cation exchange resin layer.

[0012] In a further preferred embodiment, the ion filtration filter core further comprises a filter cotton layer on the inlet end side of the anion / cation exchange resin layer.

[0013] In another preferred embodiment, the second circulation piping includes a second electrolyte output pipe, a second electrolyte return pipe, and an intermediate connecting pipe, the second electrolyte output pipe connects the bottom of the water storage cavity to the inlet end of the pump, the outlet end of the pump is connected to the inlet end of the filtration component via the intermediate connecting pipe, and the second electrolyte return pipe connects the outlet end of the filtration component to the middle of the water storage cavity, thereby forming a second water flow path from the bottom to the middle of the water storage cavity.

[0014] In a further preferred embodiment, the hydrogen-oxygen generating module, the pump, and the filtration component are arranged on the same side of the water tank, and the pump and the filtration component are arranged vertically and are located between the hydrogen-oxygen generating module and the water tank.

[0015] The above-described one or more embodiments of the present invention have one or more of the following beneficial effects: By installing the filter component and pump, the electrolyte in the reservoir cavity is led to the filter component via the second circulation pipe, realizing circulating filtration of the electrolyte during the electrolytic hydrogen production process, and the Fe in the electrolyte is removed. 2+ , Cu 2+ , Ca 2+ , Mg 2+ This effectively removes metal ions such as those mentioned above, thereby improving the electrolysis efficiency and extending the service life of the device. [Brief explanation of the drawings]

[0016] The present invention will now be described in more detail with reference to the accompanying drawings. [Figure 1] 1 is a schematic diagram showing the three-dimensional structure of a hydrogen and oxygen generating device according to one embodiment of the present invention; [Figure 2] 1 is a schematic diagram showing the internal structure of the housing of a hydrogen and oxygen generating device according to an embodiment of the present invention; [Figure 3] 1 is a schematic diagram showing the partial structure of a hydrogen and oxygen generating device including a circulation and filtering mechanism according to an embodiment of the present invention; [Figure 4] A longitudinal cross-sectional view of the internal structure of the outer casing of a hydrogen and oxygen generating device according to one embodiment of the present invention. [Figure 5] 3D view of the water cover according to one embodiment of the present invention [Figure 6] A three-dimensional view of the water cover from another angle in one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It should be noted that the embodiments described here are only some of the embodiments of the present invention and do not cover all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without requiring creative work are all within the scope of protection of the present invention.

[0018] 1 to 4, some embodiments of the present invention provide a hydrogen and oxygen generating device with a circulation and filtration function, which includes an outer casing 100, a water tank 200, a hydrogen and oxygen generating module 300, a control board 400, and a circulation and filtration mechanism 500.

[0019] The outer casing 100 has a roughly rectangular parallelepiped structure and is composed of a detachable housing 101 and a top cover 102. In the internal storage space, a water tank 200, a hydrogen and oxygen generation module 300, a control board 400, and a circulation filtration mechanism 500 are integrated and arranged.

[0020] Water tank 200 is composed of tank body 201 and tank lid 202 detachably attached to the top of tank body 201, and forms a sealed water storage cavity 203 inside. Tank lid 202 is provided with a water supply port that communicates with water storage cavity 203, and electrolyte (e.g., pure water) can be replenished into water storage cavity 203 through this water supply port. A water lid 204 with a screw connection is attached to the water supply port, ensuring that the water supply port is sealed.

[0021] The hydrogen-oxygen generation module 300 is disposed to the side of the water tank 200 and communicates with the water storage cavity 203 via a first circulation pipe (not shown), forming an electrolyte circulation circuit. This first circulation pipe allows the electrolyte to circulate between the hydrogen-oxygen generation module 300 and the water storage cavity 203, ensuring the continuous progress of the electrolysis reaction. The control board 400 is disposed on the same side of the hydrogen-oxygen generation module 300 and the water tank 200, and is located above the hydrogen-oxygen generation module 300. The control board 400 is electrically connected to the hydrogen-oxygen generation module 300 and manages the control of electrolysis power and the activation / deactivation of circulation filtration, thereby realizing the hydrogen generation function through water electrolysis. Furthermore, a cooling fan 401 is installed on the opposite side of the control board 400 from the water tank 200 to facilitate heat dissipation from the control board 400. The structure of the hydrogen-oxygen generation module 300 is based on existing technology, so a detailed description will be omitted here.

[0022] In some embodiments, the first circulation piping includes a first electrolyte output pipe (not shown) and a first electrolyte return pipe (not shown). The first electrolyte output pipe connects a first outlet (not shown) at the bottom of the reservoir cavity 203 to the inlet end of the hydrogen-oxygen generation module 300. The first electrolyte return pipe connects a first inlet (not shown) at the top of the reservoir cavity 203 to the outlet end of the hydrogen-oxygen generation module 300. The reservoir cavity 203 supplies the electrolyte to the hydrogen-oxygen generation module 300 via the first electrolyte output pipe, and the hydrogen-oxygen generation module 300 returns unreacted electrolyte and oxygen to the reservoir cavity 203 via the first electrolyte return pipe.

[0023] In a preferred embodiment, the circulation filtration mechanism 500 includes a pump 501 and a filtration component 502 connected in series, and the pump 501 connects the reservoir cavity 203 and the filtration component 502 via a second circulation pipe 600 to form a filtration circulation circuit. The second circulation pipe 600 is driven by the pump 501 to circulate and filter the electrolyte through the filtration component 502, and the Fe 2+ and Cu 2+ By removing metal ions such as Ca, the deposition of an insulating layer on the electrode surface is prevented, improving electrolysis efficiency (current efficiency is improved by approximately 15%-20%). 2+ and Mg 2+ This reduces the risk of pipe clogging due to the use of electrolytic filters and achieves circulating filtration of the electrolyte in the electrolytic hydrogen production process. This improves electrolysis efficiency and hydrogen purity, extends the life of the equipment, and improves the efficiency and quality of hydrogen production.

[0024] Preferably, the second circulation piping 600 includes a second electrolyte output pipe 601, a second electrolyte return pipe 602, and an intermediate connecting pipe 603. The second electrolyte output pipe 601 connects a second outlet port at the bottom of the water storage cavity 203 to the water intake side of the pump 501. The discharge side of the pump 501 is connected to the input side of the filtration component 502 via the intermediate connecting pipe 603, and the second electrolyte return pipe 602 connects the output side of the filtration component 502 to a second inlet port at the center of the water storage cavity 203. This forms a second water flow path from the bottom to the center of the water storage cavity 203.

[0025] In some embodiments, the filtration component 502 includes a tubular housing and a replaceable ion filtration filter element (not shown) installed therein. The tubular housing is cylindrical and made of PVC material, and both ends are threadedly connected to piping. The ion filtration filter element is cylindrical and tightly fitted inside the tubular housing, and has a packed structure consisting of an anion / cation exchange resin layer inside. The cation exchange resin in the anion / cation exchange resin layer is Ca 2+ , Mg 2+ , Fe 2+ , Cu 2+ The anion exchange resin layer in the anion / cation exchange resin layer can remove metal cations such as OH. ―In another preferred embodiment, the ion filtration element may be composed solely of anion / cation exchange resin material. This dual filtration of anions and cations can significantly reduce the metal ion concentration in the electrolyte, significantly reducing the risk of electrode corrosion and precipitation and extending the life of the device.

[0026] Furthermore, in some embodiments, the ion filtration filter element also includes a filter cotton layer (not shown) located upstream of the anion / cation exchange resin layer. The filter cotton layer can be made of polypropylene fiber or PP cotton material. This gives the ion filtration filter element a composite structure of a "filter cotton layer + anion / cation exchange resin layer." Suspended matter is captured by the filter cotton layer, and ionic impurities are removed by the resin layer, achieving the dual protection of "physical filtration + chemical purification."

[0027] An openable drain pipe (not shown) is further provided at the bottom of the tank body 201 to facilitate draining the electrolyte in the water storage cavity 203. The drain pipe can be closed with a screw-type plug, and when it is necessary to drain the electrolyte in the water storage cavity 203, the water in the water storage cavity 203 can be completely drained by removing the screw-type plug from the drain pipe.

[0028] In some embodiments, the hydrogen and oxygen generating module 300, the pump 501, and the filtration component 502 are arranged on the same side of the water tank 200. The pump 501 and the filtration component 502 are arranged vertically and are located between the hydrogen and oxygen generating module 300 and the water tank 200. This allows for a compact structural layout and reduces the size of the device.

[0029] In some embodiments, a gas-liquid separation cavity 205 is integrally formed inside the water tank 200. This gas-liquid separation cavity 205 has a cylindrical shape and is installed to the side of the water storage cavity 203. The hydrogen-oxygen generation module 300 is provided with a hydrogen gas outlet (not shown), which is in communication with the gas-liquid separation cavity 205. The tank lid 202 of the water tank 200 is provided with a hydrogen gas inlet, which connects the gas-liquid separation cavity 205 with the hydrogen suction port 211. As a result, the hydrogen gas generated in the hydrogen-oxygen generation module 300 is separated from water vapor in the gas-liquid separation cavity 205, and the separated hydrogen gas can be inhaled by the user through the hydrogen suction port 211.

[0030] Furthermore, a drain port 206 is provided at the bottom of the gas-liquid separation cavity 205, and a float valve mechanism is disposed inside. The float valve mechanism (not shown) includes a float body and a flexible seal piece, and the density of the float body is set to an intermediate value between that of the electrolyte and that of hydrogen gas. The seal piece is fixed to the bottom surface of the float body and is configured to be able to block the drain port 206. When the liquid level in the gas-liquid separation cavity 205 rises to a set height, the float rises and the seal piece separates from the drain port 206, and the liquid returns to the water storage cavity 203 by gravity. When the liquid level drops, the float descends and the seal piece again blocks the drain port 206, preventing leakage of hydrogen gas.

[0031] Furthermore, a connection port 207 is provided at the bottom of the water storage cavity 203, and the bottom of the water tank 200 extends downward to form an annular dam ring 208. The outlet port 206 and the connection port 207 are both located inside the annular dam ring 208, and the bottom of the annular dam ring 208 is closed by a sealed bottom cover 209. An overflow pipe 210 is installed in the water storage cavity 203, and its lower end is coaxially sleeve-fitted with the connection port 207, and its upper end extends above the operating water level of the water storage cavity 203. With this design, water discharged from the outlet port 206 first enters the flow path cavity surrounded by the annular dam ring 208 and then flows into the water storage cavity 203 via the connection port 207 and the overflow pipe 210. This realizes the recycling of water resources.

[0032] In some embodiments, two independent gas-liquid separation cavities 205 are arranged in parallel inside the water tank 200. Each gas-liquid separation cavity 205 is connected to the hydrogen gas outlet of the hydrogen-oxygen generation module 300 via an independent hydrogen gas inlet pipe (not shown). A single hydrogen suction port 211 is provided on the front or top surface of the outer casing 100, and both gas-liquid separation cavities 205 are connected to this hydrogen suction port 211 via flexible tubes. With this configuration, even if one gas-liquid separation cavity 205 fails, the other can still operate independently, improving the reliability of the device.

[0033] In a preferred embodiment, the water refill port also functions as an oxygen outlet, allowing the user to inhale oxygen. As described above, oxygen generated by the hydrogen and oxygen generation module 300 through water electrolysis is introduced into the water storage cavity 203 via the first circulation line. Referring to FIGS. 1, 5, and 6, the water lid 204 is installed on the water tank 200 and includes a cap 2041. A threaded portion 2042 is provided at the bottom of the cap 2041, which threads into the inner wall of the water refill port of the water tank 200 to achieve a tight seal. The main structure of the cap 2041 is composed of a circular bottom wall 20411 and a peripheral wall 20412 extending vertically upward from the periphery of the bottom wall 20411, with the top of the peripheral wall 20412 positioned higher than the plane of the bottom wall 20411. An oxygen nozzle 2043 is integrally formed at the center of the bottom wall 20411 and protruding upward. The top of this oxygen nozzle 2043 is located at a lower position than the top of the peripheral wall 20412. An oxygen port is provided inside the oxygen nozzle 2043, and this oxygen port communicates with the water storage cavity 203 via an internal passage of the water lid 204. During use, a user can inhale oxygen concentrated in the water storage cavity 203 by connecting an oxygen inhalation device to the oxygen nozzle 2043 of the water lid 204.

[0034] Furthermore, a plurality of (for example, three or four) ribs 2044 are provided on the inner surface of the peripheral wall 20412. These ribs 2044 are evenly spaced in the circumferential direction of the peripheral wall 20412. This structural design allows an operator to easily tighten or loosen the water lid 204 by applying force to the ribs 2044 with their fingers.

[0035] Although one embodiment of the present invention has been described in detail above, the description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent modifications and improvements made within the scope of the present invention are intended to be encompassed within the scope of the patent right of the present invention. [Explanation of symbols]

[0036] 100 outer casing 101 Case 102 Lid 200 water tank 201 Tank body 202 Tank lid 203 Water Reservoir 204 Water lid 2041 Capricornus 20411 Bottom wall 20412 Peripheral wall 2042 threaded part 2043 Oxygen Nozzle 2044 Ribs 205 Gas-liquid separation cavity 206 Drain 207 Connection port 208 Circular Dam Ring 209 Seal bottom cover 210 Overflow pipe 211 Hydrogen inlet 212 Hydrogen output port 300 Hydrogen and Oxygen Generator Module 400 control board 401 Cooling fan 500 Circulating filtration mechanism 501 Pump 502 Filtration Components 600 2nd circulation piping 601 Second electrolyte output pipe 602 Second electrolyte return pipe 603 intermediate indirect pipe.

Claims

1. The device comprises an outer casing, a water tank, a hydrogen and oxygen generating module, a control board, and a circulation and filtration mechanism installed in the outer casing, A water storage cavity is formed inside the water tank, and a water supply port is provided in the water storage cavity; The hydrogen and oxygen generating module is connected to the reservoir cavity via a first circulation pipe to form an electrolyte circulation circuit, and is electrically connected to the control board; the circulation filtration mechanism includes a pump and a filtration component arranged in series, the pump being connected between the water storage cavity and the filtration component via a second circulation pipe to form a filtration circulation circuit; A hydrogen and oxygen generating device with a circulating filtration function, characterized in that the filtration component is configured to remove at least a portion of metal ions in the electrolyte.

2. 2. The hydrogen and oxygen generating apparatus of claim 1, wherein the filtering component comprises a tubular casing and an ion filtering filter core disposed within the tubular casing, the ion filtering filter core comprising an anion / cation ion exchange resin layer.

3. 3. The hydrogen and oxygen generating apparatus according to claim 2, wherein the ion filter core further comprises a filter cotton layer on the inlet end side of the anion / cation ion exchange resin layer.

4. 2. The hydrogen and oxygen generating apparatus according to claim 1, wherein the second circulation piping includes a second electrolyte output pipe, a second electrolyte return pipe, and an intermediate connecting pipe, the second electrolyte output pipe connects the bottom of the water storage cavity to the inlet end of the pump, the outlet end of the pump is connected to the inlet end of the filtration component via the intermediate connecting pipe, and the second electrolyte return pipe connects the outlet end of the filtration component to the middle of the water storage cavity, thereby forming a second water flow path from the bottom to the middle of the water storage cavity.

5. 2. The hydrogen and oxygen generating device according to claim 1, wherein the hydrogen and oxygen generating module, the pump, and the filtration component are arranged on the same side of the water tank, and the pump and the filtration component are arranged vertically and are located between the hydrogen and oxygen generating module and the water tank.

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