An electrolysis water device

Abstract

The application discloses an electrolytic water device. The electrolytic water device comprises a shell, a cathode and an anode; the shell has a cavity inside, and water inlets and outlets are arranged on opposite surfaces of the shell; wherein the diameter of the water inlet is larger than that of the water outlet; the cathode and the anode are arranged in the cavity, and extend along the direction from the water inlet to the water outlet; the two ends of the anode in the extending direction are fixed to the inner wall of the shell; the cathode and the anode are both in the form of a sheet, and the anode and the cathode are arranged in a stacked manner with a spacing, and the sheet surface of the anode protrudes towards the cathode. The sheet anode with a curved surface structure is constructed in the embodiment of the application, the anode and the cathode are arranged in a stacked manner with a spacing, a water flow channel similar to a Venturi structure with a narrow middle and wide ends is formed, the ionization activity can be improved at the electric field concentration, and the turbulent flow can be formed at the two ends to quickly take the bubbles away from the electrode surface, so that the water with a wide TDS value can be effectively electrolyzed, and the disinfection and sterilization requirement can be met.

Description

Technical Field

[0001] This invention relates to the field of electrocatalysis technology, and more particularly to a water electrolysis device. Background Technology

[0002] As the concept of whole-house water purification becomes more widely accepted, the quality of household water has improved to some extent.

[0003] However, improved water quality has led to a decrease in the total dissolved solids (TDS) and the concentration of conductive ions in the water, which limits the disinfection and sterilization capabilities of traditional water electrolysis devices in water with low conductive ion concentrations. Summary of the Invention

[0004] This invention provides a water electrolysis device to solve the problem of limited ability to electrolyze and sterilize water with low conductive ion concentration, thereby improving the disinfection and sterilization performance of the water electrolysis device.

[0005] According to one aspect of the present invention, an electrolytic water device is provided, comprising: a housing, a cathode, and an anode;

[0006] The outer shell has an internal cavity, and an inlet and an outlet are provided on opposite side surfaces of the outer shell; wherein the diameter of the inlet is larger than the diameter of the outlet.

[0007] The cathode and the anode are disposed within the cavity, and the cathode and the anode extend in the direction from the water inlet to the water outlet; the two ends of the anode in the extending direction are fixed to the inner wall of the outer shell;

[0008] Both the anode and the cathode are sheet-like, and the anode and the cathode are stacked and spaced apart, with the sheet-like surface of the anode protruding towards the cathode.

[0009] Optionally, a protrusion is provided on the inner wall of the housing on the side opposite to the anode, and the protrusion supports the anode;

[0010] The anode has a preset curvature, and there is a first preset distance between the anode and the cathode. The first preset distance gradually increases from the center position of the cathode in the extension direction towards both sides near the inlet and the outlet.

[0011] Optionally, the anode is disposed on both sides of the cathode, and the inner walls of the outer casing opposite to the anode are provided with at least two corresponding protrusions;

[0012] The protrusion supports the anodes located on both sides of the cathode, and the anodes have the same preset curvature; there is a second preset distance between the two anodes, and the second preset distance gradually increases from the center position toward the inlet and outlet of the water.

[0013] Optionally, the protrusions include a plurality of protrusions, and the plurality of protrusions are arranged at equal intervals.

[0014] Optionally, the range of the first preset spacing corresponding to the center position of the cathode in the extension direction includes 0.1 to 0.3 mm.

[0015] Optionally, at both ends near the inlet or outlet, there is a first distance between the anode and the cathode, and a second distance between the anode and the inner wall of the housing;

[0016] The length range of the protrusion includes the second spacing to (second spacing + first spacing * (30% to 60%)).

[0017] Optionally, the protrusion is integrally formed with the outer casing.

[0018] Optionally, the water electrolysis device also includes a wiring panel;

[0019] The wiring panel is disposed on the side of the housing adjacent to the surface where the water inlet or the water outlet is located; the wiring panel is used to seal the housing so that the cavity is a sealed cavity;

[0020] The anode includes an anode electrode and an anode pin, the anode pin being disposed on one side of the anode electrode perpendicular to the extending direction; the cathode includes a cathode electrode and a cathode pin, the cathode pin being disposed on one side of the cathode electrode perpendicular to the extending direction.

[0021] The wiring panel is provided with an anode wiring slot and a cathode wiring slot; wherein, the anode wiring slot is used to pass through the anode pin for electrical connection with an external wire; the cathode wiring slot is used to pass through the cathode pin for electrical connection with an external wire.

[0022] Optionally, the distance between the water inlet and the wiring panel is less than the distance between the water outlet and the wiring panel.

[0023] Optionally, the cathode includes a cathode electrode and a cathode pin;

[0024] The cathode electrode includes a plurality of sheet-shaped electrode portions, which extend along the direction from the inlet to the outlet, and the plurality of electrode portions are spaced apart in a direction perpendicular to the direction from the inlet to the outlet.

[0025] The cathode pins are disposed on one side of the cathode electrode perpendicular to the extension direction, and are all electrically connected to the plurality of electrode portions.

[0026] The water electrolysis device provided in this invention, by arranging the anode and cathode in a stacked manner within the cavity of the outer casing, and constructing a curved sheet-like anode with the curved anode protruding towards the cathode, can create a differential electric field distribution under a constant voltage. This enhances the reaction kinetics of the electrocatalytic reaction at the point of electric field concentration, which is beneficial for improving ionization activity. Consequently, it can effectively ionize and catalyze water with low TDS values, generating strong oxidizing substances to effectively sterilize water with a wide TDS range. The curved anode and cathode form a Venturi-like water flow channel that is narrow in the middle and wide at both ends, creating turbulence near the inlet and outlet. This allows the fast-flowing water to quickly remove suspended particles, bubbles, and ions from the electrode surface, which is beneficial for improving the electrolysis efficiency of water with low TDS values, preventing scale buildup, increasing the efficiency of strong oxidizing substance generation, and achieving effective sterilization of water with a wide TDS range. Furthermore, by setting the inlet diameter to be larger than the outlet diameter, a certain pressure can be formed inside the water electrolysis device, causing the microbubbles generated by electrolysis to burst inside the device. The bursting ability of the microbubbles can break the hydrogen bonds between water molecules, which is beneficial to improving the ionization efficiency of water and achieving effective electrolysis of water with a wide TDS value range.

[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a water electrolysis device according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure along the A-A' direction;

[0031] Figure 3 yes Figure 1 A schematic diagram of another cross-sectional structure along the A-A' direction;

[0032] Figure 4 This is a bottom view of a water electrolysis device according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the anode structure in a water electrolysis device according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the cathode in a water electrolysis device according to an embodiment of the present invention;

[0035] Figure 7 yes Figure 1 A schematic diagram of the cross-sectional structure along the B-B' direction;

[0036] Figure 8 yes Figure 1 A schematic diagram of the cross-sectional structure along the C-C' direction;

[0037] Figure 9 This is an output current curve diagram of an electrolysis process provided according to an embodiment of the present invention;

[0038] Figure 10 This is an output current curve diagram of another electrolysis process provided according to an embodiment of the present invention.

[0039] Figure label:

[0040] 10. Outer shell; 11. Inlet; 12. Outlet; 13. Protrusion; 20. Cathode; 21. Cathode electrode; 211. Electrode part; 22. Cathode pin; 30. Anode; 31. Anode electrode; 32. Anode pin; 40. Wiring panel; 41. Anode wiring groove; 42. Cathode wiring groove; d1. First preset spacing; d2. Second preset spacing; D1. First spacing; D2. Second spacing. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] This invention provides a water electrolysis device. Figure 1 This is a schematic diagram of the structure of a water electrolysis device provided in an embodiment of the present invention. Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure along the A-A' direction. (Combined with...) Figure 1 and Figure 2 The water electrolysis device includes: a shell 10, a cathode 20 and an anode 30.

[0044] The outer casing 10 has an internal cavity, and an inlet 11 and an outlet 12 are provided on opposite side surfaces of the outer casing 10.

[0045] The cathode 20 and anode 30 are disposed in the cavity and extend along the direction from the inlet 11 to the outlet 12; the two ends of the anode 30 in the extending direction are fixed to the inner wall of the outer casing 10.

[0046] Both the anode 30 and the cathode 20 are sheet-like, and the anode 30 and the cathode 20 are stacked and spaced apart, with the sheet-like surface of the anode 30 protruding towards the cathode 20.

[0047] Specifically, water flows into the water electrolysis device through the inlet 11 on the outer casing 10. Inside the casing 10, the water undergoes electrolytic catalysis through the cathode 20 and anode 30. During the generation of hydrogen and oxygen, strong oxidizing substances such as ozone and hypochlorous acid are also produced, which can sterilize the water. The highly oxidizing water can also be used for disinfection of other products. In the cavity inside the outer casing 10, elongated cathodes 20 and anodes 30 are arranged along the direction from the inlet 11 to the outlet 12. Both cathodes 20 and anodes 30 are sheet-like structures, with the surfaces of the cathodes 20 and 30 facing each other and arranged in parallel at intervals in a stacked manner, creating a large electric field between their surfaces. The two ends of the anode 30 are fixed to the inner wall of the outer casing 10, so that water flowing in from the inlet 11 passes through the electric field on the side of the anode 30 closest to the cathode 20, thus undergoing electrolysis; while no water flows through the side of the anode 30 furthest from the cathode 20.

[0048] The cathode 20 is configured as a planar sheet structure, while the anode 30 is configured as a curved sheet structure, with the anode 30 protruding towards the side closest to the cathode 20. By constructing the anode 30 as a curved electrode structure, a concentrated electric field can be formed at the protruding position under a constant voltage. This creates a differential electric field distribution in the water flow channel between the inlet 11 and the outlet 12; that is, the electric field is concentrated at the middle protruding position, while it is dispersed at both ends. This concentrated electric field is beneficial for improving the reaction kinetics of the electrocatalytic reaction and increasing ionization activity. Thus, even for currently good household water with low conductive ion concentrations, effective ionization catalysis can be achieved, generating strong oxidizing substances to further sterilize the water. Therefore, the water electrolysis device provided in this embodiment of the invention is suitable for effectively electrolyzing and sterilizing water with a wide TDS value range.

[0049] By setting the anode 30 with a curved surface structure, the channel through which water flows between the anode 30 and the cathode 20 narrows at a certain position between the inlet 11 and the outlet 12, forming a Venturi-like structure that is wider at the inlet 11 and outlet 12 and narrower at the position between the inlet 11 and outlet 12. Since hydrogen and oxygen are generated during water electrolysis, existing in the form of bubbles in the water, the generated bubbles need to be quickly removed from the surfaces of the cathode 20 and anode 30 to ensure the electrocatalytic efficiency of the water electrolysis device. Based on the Venturi effect of the Venturi structure, in this embodiment of the invention, the water flow channel formed by the anode 30 and cathode 20 increases the flow velocity of water when it flows through the narrower position between the inlet 11 and outlet 12.

[0050] The water flow channel, narrow in the middle and wide at both ends, formed between the anode 30 and cathode 20 in this embodiment of the invention, creates turbulence near the inlet 11 and near the outlet 12. The faster water flow reduces the residence time of suspended particles, bubbles generated during electrolysis, and ions produced during electrolysis on the surfaces of the cathode 20 and anode 30, allowing the cathode 20 and anode 30 to have more contact with the water, resulting in continuous water electrolysis. This improves the electrolysis efficiency for water with lower TDS values, avoids the bubble shielding effect on the electrode surface which could lead to increased local resistance and cessation of the electrolysis reaction, thereby reducing polarization and energy consumption, preventing scale buildup, increasing the efficiency of strong oxidizing substances, and achieving effective electrolytic sterilization for water with a wide TDS range. Furthermore, setting the diameter of the inlet 11 to be larger than that of the outlet 12 creates a certain pressure within the water electrolysis device, causing the hydrogen and oxygen microbubbles generated during electrolysis to burst within the device. The bursting ability of microbubbles can break the hydrogen bonds between water molecules, which is beneficial to improving the ionization efficiency of water and achieving effective electrolysis of water with a wide TDS range. For example, taking an inlet diameter of 4.5 mm as an example, the electrolysis efficiency of water with a wide TDS range was tested with 12 different outlet diameters. The test results are shown in Table 1 below:

[0051] Table 1. Relationship between outlet diameter and output current

[0052] 4.5 12 0.588 79 3.0 12 0.630 79 4.5 12 0.078 4 3.0 12 0.085 4

[0053] As shown in Table 1, for both water with high and low TDS values, the output current of electrolysis increases when the diameter of the outlet 12 is smaller than that of the inlet 11. Therefore, by setting the diameter of the outlet 12 to be smaller than that of the inlet 11, the bursting ability of gas microbubbles within the device can break the hydrogen bonds between water molecules, thus achieving effective electrolysis of water with a wide TDS value range.

[0054] The water electrolysis device provided in this invention, by arranging the anode and cathode in a stacked manner within the cavity of the outer casing, and constructing a curved sheet-like anode with the curved anode protruding towards the cathode, can create a differential electric field distribution under a constant voltage. This enhances the reaction kinetics of the electrocatalytic reaction at the point of electric field concentration, which is beneficial for improving ionization activity. Consequently, it can effectively ionize and catalyze water with low TDS values, generating strong oxidizing substances to effectively sterilize water with a wide TDS range. The curved anode and cathode form a Venturi-like water flow channel that is narrow in the middle and wide at both ends, creating turbulence near the inlet and outlet. This allows the fast-flowing water to quickly remove suspended particles, bubbles, and ions from the electrode surface, which is beneficial for improving the electrolysis efficiency of water with low TDS values, preventing scale buildup, increasing the efficiency of strong oxidizing substance generation, and achieving effective sterilization of water with a wide TDS range. Furthermore, by setting the inlet diameter to be larger than the outlet diameter, a certain pressure can be formed inside the water electrolysis device, causing the microbubbles generated by electrolysis to burst inside the device. The bursting ability of the microbubbles can break the hydrogen bonds between water molecules, which is beneficial to improving the ionization efficiency of water and achieving effective electrolysis of water with a wide TDS value range.

[0055] Based on the above embodiments, see below. Figure 1 and Figure 2 Optionally, a protrusion 13 is provided on the inner wall of the outer casing 10 on the side opposite to the anode 30, and the protrusion 13 supports the anode 30;

[0056] The anode 30 has a preset curvature, and there is a first preset distance d1 between the anode 30 and the cathode 20. The first preset distance d1 gradually increases from the center position of the cathode 20 in the extension direction towards the inlet 11 and outlet 12 on both sides.

[0057] Specifically, a protrusion 13 is provided on the side of the inner wall of the outer casing 10, that is, the side opposite to the anode 30. The protrusion 13 contacts the surface of the anode 30 and can apply a supporting force to the anode 30, causing the anode 30 to protrude towards the cathode 20. This makes the anode 30 have a curved structure with a certain preset curvature. There is a varying first preset distance d1 between the anode 30 and the cathode 20. That is, the first preset distance d1 is at its minimum at the protruding position at the center in the extension direction of the cathode 20, and gradually increases from the protruding position at the center towards the two ends near the inlet 11 and the outlet 12, thereby forming a water flow channel that is narrow in the middle and wide at both ends. The number of protrusions 13 can be set as needed and is not limited here. The preset curvature of the curved anode 30 can also be set as needed and is not limited here. Figure 2The diagram shows a case where a protrusion 13 is provided on the side wall of the outer casing 10 opposite to the anode 30. By providing the protrusion 13, the curved structure of the anode 30 can be supported to a certain extent, making the anode 30 more stable; at the same time, the gap between the protrusion 13 and the outer casing 10 can prevent the anode 30 and the outer casing 10 from being tightly attached, which is beneficial for the electrode to effectively dissipate heat during electrolysis.

[0058] By setting the protrusion 13 to apply external force to the anode 30, a curved anode structure with a preset curvature is constructed, so that the deformation of the anode 30 is less than or equal to 20% of the thickness of the anode 30. A tensile stress field can be formed on the surface of the protruding side of the anode 30, increasing the charge state density of the d orbitals of the catalytic active center, thereby improving the reaction kinetics of the electrocatalytic reaction and achieving effective electrolytic sterilization of water with a low TDS value.

[0059] Based on the above embodiments, see below. Figure 2 Optionally, the anode 30 is disposed on both sides of the cathode 20, and the inner walls of the outer casing 10 opposite to the anode 30 are provided with at least two corresponding protrusions 13.

[0060] The protrusion 13 supports the anodes 30 located on both sides of the cathode 20. The anodes 30 have the same preset curvature. There is a second preset distance d2 between the two anodes 30, and the second preset distance d2 gradually increases from the center position towards the inlet 11 and outlet 12 on both sides.

[0061] Specifically, the anode 30 can be disposed on one side of the cathode 20 or on both sides of the cathode 20, that is, the anode 30 and the cathode 20 form a stacked structure of "anode-cathode-anode", and there is a certain gap between adjacent cathodes 20 and anodes 30, allowing water to flow between the anodes 30 and cathodes 20 to undergo an electrolytic reaction. The inner walls of the outer casing 10 opposite to the anodes 30 located on both sides of the cathode 20 are provided with protrusions 13, and the number of protrusions 13 on both sides is the same, with their arrangement corresponding one-to-one, thereby forming a curved electrode structure with the same preset curvature for the anodes 30 on both sides. For example, Figure 2The diagram shows a protrusion 13 positioned at the center between the inlet 11 and the outlet 12. A varying second preset distance d2 exists between the two anodes 30. The second preset distance d2 is smallest at the center of the protrusion 13 and gradually increases towards both ends, reaching its maximum near the ends of the inlet 11 and outlet 12. This creates a Venturi-like structure with a narrow center and wide ends for the anodes 30, increasing the flow velocity through the narrower central region and creating turbulence at the inlet 11 and outlet 12. This allows the water flow to quickly remove suspended particles, electrolytically generated bubbles, and ions from the electrode surface and discharge them through the outlet 12, reducing their residence time on the electrode surface. This effectively avoids the problem of increased local resistance and stagnation of the electrolysis reaction caused by the bubble shielding effect, improving electrocatalytic efficiency and enabling the water electrolysis device to effectively electrolyze and sterilize water with low TDS values.

[0062] Based on the above embodiments, Figure 3 yes Figure 1 A schematic diagram of another cross-sectional structure along the A-A' direction. See also... Figure 3 Optionally, the protrusions 13 include a plurality of protrusions, and the plurality of protrusions 13 are arranged at equal intervals.

[0063] Specifically, the number of protrusions 13 on the side wall of the outer casing 10 opposite to the anode 30 can also be multiple, with adjacent protrusions 13 arranged at equal intervals. Providing multiple protrusions 13 to support the anode 30 makes the support for the anode 30 more stable. However, because multiple protrusions 13 are provided, the distance between two adjacent protrusions 13 becomes smaller, resulting in a poorer heat dissipation effect of the electrode during electrolysis compared to having fewer protrusions 13.

[0064] Based on the above embodiments, see below. Figure 2 Optionally, the range of the first preset spacing d1 corresponding to the center position includes 0.1 to 0.3 mm.

[0065] Specifically, by constructing a curved anode 30 with a protrusion 13, the first preset distance d1 at the center protrusion of the anode 30 can be smaller than the first preset distance d1 corresponding to the position of the inlet 11 or outlet 12. The value of the first preset distance d1 between the anode 30 and the cathode 20 at the center protrusion can be set to 0.1 to 0.3 mm. If the first preset distance d1 at the center is too small, the anode 30 and the cathode 20 may come into contact, resulting in a short circuit. If the first preset distance d1 at the center is too large, the narrow area in the middle is insufficient to effectively increase the flow velocity of the water. Consequently, turbulence may not be formed at the two ends near the inlet 11 and the outlet 12, which is not conducive to the water flow quickly carrying suspended particles, bubbles and ions generated during electrolysis away from the electrode surface, thus affecting the electrocatalytic efficiency.

[0066] Based on the above embodiments, see below. Figure 2 Optionally, at both ends near the inlet 11 or outlet 12, there is a first distance D1 between the anode 30 and the cathode 20, and a second distance D2 between the anode 30 and the inner wall of the outer casing 10.

[0067] The length range of the protrusion 13 includes the second spacing D2 to (second spacing D2 + first spacing D1 * (30% to 60%)).

[0068] Specifically, the first spacing D1 is the spacing between the anode 30 and the cathode 20 when the anode 30 is configured as a planar electrode, which is also the maximum spacing between the anode 30 and the cathode 20 when the anode 30 is configured as a curved electrode. The second spacing D2 is the spacing between the anode 30 and the outer casing 10 when the anode 30 is configured as a planar electrode, which is also the minimum spacing between the anode 30 and the outer casing 10 when the anode 30 is configured as a curved electrode. Therefore, the first preset spacing d1 between the anode 30 and the cathode 20 is less than or equal to the first spacing D1 near the inlet 11 or outlet 12, that is, the maximum value of the first preset spacing d1 between the curved anode 30 and the cathode 20 is equal to the first spacing D1. For example, for the curved anode 30, the minimum value of the first preset spacing d1 between the anode 30 and the cathode 20 can have the following relationship with the first spacing D1: the minimum value of the first preset spacing d1 = the first spacing D1 * (30% to 60%). When multiple protrusions 13 are provided on the side wall of the outer casing 10, the lengths of the protrusions 13 at different positions are also different. Furthermore, the protrusions 13 near the inlet 11 and outlet 12 are the shortest, and their length gradually increases from both ends towards the middle, with the longest protrusion 13 at the center. The length of the protrusions 13 can be set by the user according to the requirement of applying a supporting force to the anode 30 to induce corresponding deformation; no restrictions are imposed here. For example, the length of the protrusions 13 can be within the range of the second spacing D2 to (second spacing D2 + first spacing D1 * (30% to 60%)), causing a 30% to 60% contraction in the minimum distance between the anode 30 and cathode 20, thereby narrowing the water flow channel at the center, increasing the water flow velocity, and creating turbulence near the inlet 11 and outlet 12. For example, if the first spacing D1 is 0.5 mm, the length of the protrusions 13 can be the sum of the second spacing D2 and 0.15 mm to 0.3 mm.

[0069] Based on the above embodiments, the protrusion 13 may optionally be integrally formed with the outer shell 10.

[0070] Specifically, the protrusion 13 is made of the same material as the outer shell 10. Preferably, the protrusion 13 and the outer shell 10 can be integrated into one structure, which can make the protrusion 13 support the anode 30 more stably.

[0071] Based on the above embodiments, Figure 4 This is a bottom view schematic diagram of a water electrolysis device provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the anode structure in a water electrolysis device provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the cathode structure in a water electrolysis device provided in an embodiment of the present invention. Figure 7 yes Figure 1A schematic diagram of the cross-sectional structure along the B-B' direction. Figure 8 yes Figure 1 A schematic diagram of the cross-sectional structure along the C-C' direction. (Combined with...) Figure 1 and Figures 4 to 8 Optionally, the water electrolysis device also includes a wiring panel 40.

[0072] The wiring panel 40 is disposed on the side of the housing 10 adjacent to the surface where the inlet 11 or outlet 12 is located; the wiring panel 40 is used to seal the housing 10 so that the cavity is a sealed cavity.

[0073] The anode 30 includes an anode electrode 31 and an anode pin 32, with the anode pin 32 disposed on one side of the anode electrode 31 perpendicular to the extending direction; the cathode 20 includes a cathode electrode 21 and a cathode pin 22, with the cathode pin 22 disposed on one side of the cathode electrode 21 perpendicular to the extending direction.

[0074] The wiring panel 40 is provided with an anode wiring slot 41 and a cathode wiring slot 42; wherein, the anode wiring slot 41 is used to pass through the anode pin 32 for electrical connection with an external wire; the cathode wiring slot 42 is used to pass through the cathode pin 22 for electrical connection with an external wire.

[0075] Specifically, a wiring panel 40 is provided on the side adjacent to the inlet 11 or outlet 12, i.e., the bottom surface of the outer casing 10. Sealing putty can be placed in the wiring panel 40 to seal the outer casing 10 and prevent leakage of water flowing through the cavity. Simultaneously, the wiring panel 40 is also provided with a through-hole anode wiring groove 41 and a cathode wiring groove 42. The anode 30 can extend from the anode wiring groove 41 of the bottom wiring panel 40 through the provided anode pin 32. Similarly, the cathode 20 can extend from the cathode wiring groove 42 of the bottom wiring panel 40 through the provided cathode pin 22. For example, see [reference needed]. Figure 7 It shows a cross-sectional schematic diagram of the cathode electrode 21 and the anode electrode 31 arranged in a stacked manner; see also Figure 8 The diagram shows a cross-sectional view of the cathode pin 22 extending through the cathode wiring groove 42. This allows the anode pin 32 and cathode pin 22 to be electrically connected to corresponding external wires, enabling the application of appropriate voltages to the anode electrode 31 and cathode electrode 21 for electrocatalytic reaction.

[0076] Based on the above embodiments, see below. Figure 1 Optionally, the distance between the inlet 11 and the wiring panel 40 is less than the distance between the outlet 12 and the wiring panel 40.

[0077] Specifically, the inlet 11 is positioned closer to the wiring panel 40 than the outlet 12, meaning the horizontal height of the inlet 11 is lower than that of the outlet 12. This allows water to flow in through the lower inlet 11 and out through the higher outlet 12. Combined with the increased water flow velocity at the protruding position of the anode 30, the water flow can quickly and thoroughly carry away the bubbles generated during electrolysis, further improving the electrocatalytic efficiency and enhancing the electrolytic sterilization effect on water with lower TDS values.

[0078] Based on the above embodiments, see below. Figure 1 and Figure 6 Optionally, the cathode 20 includes a cathode electrode 21 and a cathode pin 22;

[0079] The cathode electrode 21 includes a plurality of sheet-shaped electrode portions 211, which extend along the direction from the inlet 11 to the outlet 12, and the plurality of electrode portions 211 are spaced apart in a direction perpendicular to the direction from the inlet 11 to the outlet 12.

[0080] The cathode pins 22 are disposed on one side of the cathode electrode 21 perpendicular to the extension direction, and are electrically connected to the plurality of electrode portions 211.

[0081] Specifically, see Figure 6 The direction of water flow can be determined by Figure 6 The arrows in the diagram indicate the direction. The cathode electrode 21 is configured as a structure consisting of multiple sheet-like elongated electrode sections 211 spaced apart, creating hollow gaps between adjacent electrode sections 211, thus framing the cathode electrode 21 as a comb-like structure. This increases the contact area between the cathode 20 and the water flow, and also increases the cathode area within the electric field concentration region at the protruding position of the anode 30. This allows the sides between adjacent electrode sections 211 to also form an electric field in the corresponding direction with the anode 30, accelerating the hydrogen ion reduction rate, dispersing bubble nucleation sites, reducing the probability of bubble coalescence, and further reducing the risk of electrolysis reaction stagnation caused by the bubble shielding effect.

[0082] One feasible embodiment involves using the water electrolysis device provided in any of the above embodiments of the present invention to electrolyze and sterilize water with different TDS values. The test conditions include a power supply voltage of 12V and water with different TDS values ​​obtained by adjusting with sodium chloride. Figure 9 This is an output current curve diagram of an electrolysis process provided in an embodiment of the present invention. See also... Figure 9The horizontal axis of the output current curve represents the TDS (Total Dissolved Solids) value of the water, in ppm; the vertical axis represents the output current, in amperes. Curve 01 represents the output current curve of the water electrolysis device provided in any of the above embodiments of the present invention during the electrolytic sterilization process; curve 02 represents the output current curve of competitor A in the related technology during the electrolytic sterilization process; and curve 03 represents the output current curve of competitor B in the related technology during the electrolytic sterilization process. Figure 9 It can be seen that the electrolysis output current of curve 01 for water with different TDS values ​​is significantly greater than that of competitor A and competitor B for the corresponding TDS values. This indicates that the water electrolysis device provided in any of the above embodiments of the present invention has high electrocatalytic efficiency for water with a wide range of TDS values ​​and has a good electrolytic sterilization effect.

[0083] Another feasible embodiment utilizes the water electrolysis device with curved anode provided in any of the above embodiments of the present invention, and the water electrolysis device with planar anode, to electrolyze and sterilize water with the same TDS value. The test conditions include a power supply voltage of 12V and a TDS value of 75ppm for the water being electrolyzed. Figure 10 This is another output current curve diagram in an electrolysis process provided by an embodiment of the present invention. See also... Figure 10 The horizontal axis represents the number of tests, in units of times; the vertical axis represents the output current, in units of amperes. Curve 04 represents the output current curve of the electrolytic sterilization process using the water electrolysis device with a curved anode provided in any of the above embodiments of the present invention, and curve 05 represents the output current curve of the electrolytic sterilization process using the water electrolysis device with a planar anode. Figure 10 It is evident that, when electrolyzing water with the same TDS value, the output current of a water electrolysis device with a curved anode structure is significantly higher than that of a device with a planar anode structure. Electrode deformation creates a stress field on the anode surface, increasing the charge state density of the d-orbitals at the catalytic active centers, thereby enhancing the reaction kinetics of the electrocatalytic reaction and enabling electrolysis to continue even in water with low TDS values.

[0084] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An apparatus for electrolyzing water, characterized by comprising: 1) a water electrolysis device, include: Casing, cathode, and anode; The outer shell has an internal cavity, and an inlet and an outlet are provided on opposite side surfaces of the outer shell; wherein the diameter of the inlet is larger than the diameter of the outlet. The cathode and the anode are disposed within the cavity, and the cathode and the anode extend in the direction from the water inlet to the water outlet; the two ends of the anode in the extending direction are fixed to the inner wall of the outer shell; Both the anode and the cathode are plate-shaped, and the cathode is configured as a planar plate structure; the anode and the cathode are arranged in a stacked manner with intervals, and the plate-shaped surface of the anode protrudes towards the cathode; The anode is disposed on both sides of the cathode, and the inner walls of the outer casing opposite to the anode are provided with at least two corresponding protrusions; The protrusion supports the anodes located on both sides of the cathode, and the anodes have the same preset curvature; there is a second preset distance between the two anodes, and the second preset distance gradually increases from the center position towards the inlet and outlet of the water respectively; At both ends near the inlet or outlet, there is a first distance between the anode and the cathode, and a second distance between the anode and the inner wall of the outer casing; The length range of the protrusion includes the second spacing to (second spacing + first spacing * (30% to 60%)).

2. The water electrolysis device according to claim 1, characterized in that, The protrusions include multiple protrusions, and the multiple protrusions are arranged at equal intervals.

3. The water electrolysis device according to claim 1, characterized in that, The protrusion is integrally formed with the outer shell.

4. The water electrolysis device according to claim 1, characterized in that, It also includes a wiring panel; The wiring panel is disposed on the side of the housing adjacent to the surface where the water inlet or the water outlet is located; the wiring panel is used to seal the housing so that the cavity is a sealed cavity; The anode includes an anode electrode and an anode pin, the anode pin being disposed on one side of the anode electrode perpendicular to the extending direction; the cathode includes a cathode electrode and a cathode pin, the cathode pin being disposed on one side of the cathode electrode perpendicular to the extending direction. The wiring panel is provided with an anode wiring slot and a cathode wiring slot; wherein, the anode wiring slot is used to pass through the anode pin for electrical connection with an external wire; the cathode wiring slot is used to pass through the cathode pin for electrical connection with an external wire.

5. The water electrolysis device according to claim 4, characterized in that, The distance between the water inlet and the wiring panel is less than the distance between the water outlet and the wiring panel.

6. The water electrolysis device according to claim 1, characterized in that, The cathode includes a cathode electrode and a cathode pin; The cathode electrode includes a plurality of sheet-shaped electrode portions, which extend along the direction from the inlet to the outlet, and the plurality of electrode portions are spaced apart in a direction perpendicular to the direction from the inlet to the outlet. The cathode pins are disposed on one side of the cathode electrode perpendicular to the extension direction, and are all electrically connected to the plurality of electrode portions.

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