Anti-corrosion device and water heater

Abstract

The utility model discloses an anti-corrosion device and a water heater. The anti-corrosion device comprises a first anode assembly and a second anode assembly, the second anode assembly is arranged in the penetrating hole in a sealing and penetrating manner and is insulated from the first anode assembly; the mounting piece is hermetically sleeved on the first anode assembly; wherein the installation part is arranged to be installed in an inner container of the water heater in a sealed mode, and the first anode assembly and the second anode assembly are arranged to be at least partially stretch into the inner container and are insulated from the inner container. According to the anti-corrosion device, the second anode assembly penetrates through the penetrating hole of the first anode assembly, so that only one mounting hole for mounting the anti-corrosion device needs to be formed in the inner container of the water heater, and compared with two mounting holes for mounting the first anode assembly and the second anode assembly respectively, the inner container of the scheme is simpler in structure and more convenient to mount and maintain after sale; the probability of corrosion and water leakage of the inner container at the mounting hole is lower; in addition, the two anode assemblies are adopted to prevent the inner container from being corroded, and the inner container is not prone to corrosion and water leakage.

Description

Technical Field

[0001] The utility model relates to household electrical appliance technology, and more specifically, to an anti-corrosion device and a water heater. Background Art

[0002] Tank corrosion and water leakage have always been the main failure of water heaters. One solution is to use a physical anode (such as a magnesium rod) to prevent tank corrosion, and another solution is to use an electronic anode to prevent tank corrosion.

[0003] Regarding the solution of using physical anodes (such as magnesium rods) to prevent inner tank corrosion: the physical anodes will be gradually consumed during the use of the water heater. If the user does not find that the physical anodes are consumed in time, it will still cause corrosion and leakage of the inner tank;

[0004] Regarding the solution of using electronic anode to prevent inner tank corrosion: although the electronic anode will not be gradually consumed, it cannot prevent inner tank corrosion when the water heater is powered off. Utility Model Content

[0005] The embodiment of the utility model provides an anti-corrosion device which is applied to a water heater and can better prevent the inner tank of the water heater from corroding and leaking.

[0006] The embodiment of the utility model also provides a water heater.

[0007] The anti-corrosion device provided in an embodiment of the utility model includes: a first anode component, which is provided with a penetration hole; a second anode component, which is sealed and penetrated in the penetration hole and is insulated from the first anode component; a mounting piece, which is sealed and sleeved on the first anode component; wherein the mounting piece is configured to be sealed and installed on the inner tank of the water heater, and the first anode component and the second anode component are both configured to at least partially extend into the inner tank and be insulated from the inner tank.

[0008] In some exemplary embodiments, the first anode assembly is provided with a first wiring portion, the second anode assembly is provided with a second wiring portion, and the mounting member is provided with a third wiring portion. The first wiring portion, the second wiring portion, and the third wiring portion are all configured to be located outside the inner tank, and the third wiring portion is also configured to be electrically connected to the inner tank.

[0009] In some exemplary embodiments, the first anode assembly includes: a first anode body having a penetration hole, and also having an insertion section, a stop surface and a penetration section arranged in sequence, the insertion section is arranged to extend into the inner tank, the stop surface is arranged to seal and abut against the mounting member, and the penetration section is arranged to penetrate the mounting member and extend to the side of the mounting member facing away from the insertion section; a first locking washer and a first locking member are located on the side of the mounting member facing away from the insertion section, the first locking member is installed on the penetration section, the first locking washer is pressed between the first locking member and the mounting member and is insulated from the third wiring portion, the penetration section is electrically connected to the first locking washer, and the first wiring portion is located on the first locking washer; a third locking member is sealingly sleeved on the second anode assembly and sealingly matched with an end of the insertion section away from the mounting member.

[0010] In some exemplary embodiments, the first anode body includes: a first anode casing; a connecting casing with a through hole, including a casing section, a stop section and the through hole connected in sequence, the first anode casing is sleeved outside the casing section and abuts against one end of the stop section adjacent to the casing section, and one end of the stop section adjacent to the through hole abuts against the mounting member; an insulating seal is provided between the connecting casing and the mounting member and seals the position where the first anode casing and the stop section abut each other, the stop surface is located on the insulating seal, and the extending section includes the insulating seal, the casing section and the stop section.

[0011] In some exemplary embodiments, the second anode assembly includes: an anode rod, including a first section, a second section and a third section arranged in sequence, the second section is fixed in the penetration hole and sealed with the first anode assembly, the first section extends from the penetration hole and is arranged to be located in the inner tank, the third section extends from the penetration hole and is arranged to be located outside the inner tank, and the third section is protruding from the third section; a second locking washer and a second locking piece, the second locking piece is located on the side of the stop portion facing away from the mounting piece and is installed on the third section, and the second locking washer is pressed between the second locking piece and the stop portion; wherein, the second locking washer is electrically connected to the third section, and the second wiring portion is located on the second locking washer.

[0012] In some exemplary embodiments, the second anode assembly further includes: an insulating member disposed between the anode rod and the first anode assembly.

[0013] In some exemplary embodiments, the mounting member includes a metal member, the metal member is sealingly sleeved on the first anode assembly and configured to be sealingly screwed on the inner tank of the water heater, and the third wiring portion is located on the metal member.

[0014] In some exemplary embodiments, the mounting member includes a metal member and a plastic member, the plastic member is sealingly sleeved on the first anode assembly, the metal member is sleeved on the plastic member and configured to be sealed and screwed on the inner tank of the water heater, and the third wiring portion is located on the metal member.

[0015] In some exemplary embodiments, one of the first anode assembly and the second anode assembly is a physical anode assembly and the other is an electronic anode assembly.

[0016] The water heater proposed in the embodiment of the utility model comprises an inner tank, a control device, a switch component and the anti-corrosion device described in any of the above embodiments, the inner tank is provided with a mounting hole, the mounting component is sealed and mounted in the mounting hole, the first anode assembly and the second anode assembly both at least partially extend into the inner tank from the mounting hole, the switch component comprises a fourth wiring part, a fifth wiring part and a sixth wiring part, the inner tank is electrically connected to the fourth wiring part through the control device, one of the fifth wiring part and the sixth wiring part is electrically connected to the first anode assembly, and the other is electrically connected to the second anode assembly, and the fourth wiring part is configured to be electrically connected to any one of the fifth wiring part and the sixth wiring part.

[0017] In the anti-corrosion device provided by the embodiment of the utility model, the second anode component is inserted into the insertion hole of the first anode component, so that the inner tank of the water heater only needs to have one installation hole for installing the anti-corrosion device. Compared with having two installation holes to respectively install the first anode component and the second anode component, this solution has a simpler structure of the inner tank, and is more convenient to install and maintain after sales. In addition, the probability of corrosion and leakage of the inner tank at the installation hole is also smaller. Moreover, two anode components are used to prevent corrosion of the inner tank, and the inner tank is also less likely to corrode and leak.

[0018] Furthermore, one of the first anode assembly and the second anode assembly is configured as a physical anode assembly, and the other of the first anode assembly and the second anode assembly is configured as an electronic anode assembly. When the water heater is powered on, the electronic anode assembly is used to protect the inner tank from corrosion and leakage, and this process does not consume the physical anode assembly. When the water heater is powered off, the physical anode assembly is used to protect the inner tank from corrosion and leakage, thereby solving the problem that the electronic anode assembly cannot prevent the inner tank from corrosion when the water heater is powered off. Since the water heater rarely loses power, the physical anode assembly is basically not consumed, so the inner tank of the water heater of this scheme is less prone to corrosion and leakage.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an anti-corrosion device provided in some embodiments;

[0022] Figure 2 and Figure 3 for Figure 1 A partial schematic diagram of the cross-sectional structure of the anti-corrosion device shown;

[0023] Figure 4 and Figure 5 for Figure 1 A schematic diagram of the exploded structure of the anti-corrosion device shown;

[0024] Figure 6 for Figure 4 Schematic diagram of the local structure after the middle anode rod and the insulating part are assembled;

[0025] Figure 7 for Figure 6 A schematic diagram of the structure of the middle insulating member;

[0026] Figure 8 for Figure 4 Schematic diagram of the exploded structure of the first anode body;

[0027] Fig. 9 for Figure 4 A schematic structural diagram of the first anode body;

[0028] Fig.10 for Fig. 9 Schematic diagram of the structure of the middle insulation seal;

[0029] Fig.11 for Figure 4 A schematic diagram of the structure of the third locking member;

[0030] Fig.12 for Figure 5 A schematic diagram of the structure of the first locking washer (the second locking washer);

[0031] Fig.13 for Figure 4 Schematic diagram of the exploded structure of the mounting parts;

[0032] Fig.14 for Figure 4 Structural diagram of the mounting parts;

[0033] Fig.15A schematic diagram of a three-dimensional structure of an anti-corrosion device provided in some other embodiments;

[0034] Fig.16 and Fig.17 for Fig.15 A partial schematic diagram of the cross-sectional structure of the anti-corrosion device shown;

[0035] Fig.18 and Fig.19 for Fig.15 A schematic diagram of the exploded structure of the anti-corrosion device shown;

[0036] Fig. 20 A schematic diagram of the electrical control structure of a water heater provided in some embodiments.

[0037] The corresponding relationship between the reference numerals and the component names is as follows:

[0038] 100 liner, 200 control device, 300 switch, 310 fourth connection part, 320 fifth connection part, 330 sixth connection part, 400 first anode assembly, 410 first anode body, 411 insertion section, 412 stop surface, 413 penetration section, 414 first anode casing, 415 steel pipe, 416 fixed head, 417 insulating seal, 4171 first annular peripheral wall, 4172 annular end wall, 4173 second annular peripheral wall, 4174 sealing rib, 420 first locking washer, 421 first connection part, 4 30 first locking piece, 440 third locking piece, 441 third stud, 450 insulating washer, 500 second anode assembly, 510 anode rod, 511 first end, 512 second section, 513 third section, 514 stopping portion, 515 matching portion, 516 first limiting platform, 520 second locking washer, 521 second wiring portion, 530 second locking piece, 540 insulating piece, 550 mounting nut, 600 mounting piece, 610 metal piece, 611 third wiring portion, 620 plastic piece, 621 flange edge, 700 tap water. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0040] The water heater provided in the embodiment of the utility model is as follows Fig. 20 As shown, it includes an inner liner 100, a control device 200, a switch 300 and an anti-corrosion device. The switch 300 includes a fourth wiring portion 310, a fifth wiring portion 320 and a sixth wiring portion 330. The control device 200 and the switch 300 are both located outside the inner liner 100, and the inner liner 100 is provided with a mounting hole. Figures 1 to 19As shown, the anti-corrosion device includes: a first anode assembly 400, the first anode assembly 400 is provided with a penetration hole; a second anode assembly 500, the second anode assembly 500 is sealed and penetrated in the penetration hole and is insulated from the first anode assembly 400; a mounting member 600, the mounting member 600 is sealed and sleeved on the first anode assembly 400, and the second anode assembly 500 is also penetrated in the mounting member 600; wherein the mounting member 600 is sealed and installed in the mounting hole, the first anode assembly 400 and the second anode assembly 500 are both arranged to at least partially extend into the inner liner 100 from the mounting hole and are insulated from the inner liner 100, the inner liner 100 is electrically connected to the fourth wiring portion 310 through the control device 200, one of the fifth wiring portion 320 and the sixth wiring portion 330 is electrically connected to the first anode assembly 400, and the other is electrically connected to the second anode assembly 500, and the fourth wiring portion 310 is arranged to be electrically connected to any one of the fifth wiring portion 320 and the sixth wiring portion 330. After tap water 700 is introduced into the inner tank 100, the portion of the first anode assembly 400 extending into the inner tank 100 is electrically connected to the inner tank 100 through the tap water 700 in the inner tank 100, and the portion of the second anode assembly 500 extending into the inner tank 100 is also electrically connected to the inner tank 100 through the tap water 700 in the inner tank 100.

[0041] The anti-corrosion device, the second anode component 500 is inserted into the insertion hole of the first anode component 400, so that the inner tank 100 of the water heater only needs to have one installation hole for installing the anti-corrosion device. Compared with opening two installation holes to respectively install the first anode component 400 and the second anode component 500, the structure of the inner tank 100 of this solution is simpler, and the installation and after-sales maintenance are also more convenient. In addition, the probability of corrosion and leakage of the inner tank 100 at the installation hole is also smaller. Moreover, two anode components (the two anode components, namely the first anode component 400 and the second anode component 500) are used to prevent the corrosion of the inner tank 100, and the inner tank 100 is also less likely to corrode and leak.

[0042] In some examples, one of the first anode assembly 400 and the second anode assembly 500 is configured as a physical anode assembly, and the other of the first anode assembly 400 and the second anode assembly 500 is configured as an electronic anode assembly. When the water heater is powered on, the electronic anode assembly is used to protect the inner tank 100 from corrosion and leakage, and this process does not consume the physical anode assembly; when the water heater is powered off, the physical anode assembly is used to protect the inner tank 100 from corrosion and leakage, thereby solving the problem that the electronic anode assembly cannot prevent the inner tank 100 from corrosion when the water heater is powered off; since the water heater rarely loses power, the physical anode assembly is basically not consumed, so the inner tank 100 of the water heater of this solution is less prone to corrosion and leakage.

[0043] The first anode assembly 400 may be a physical anode assembly, and the second anode assembly 500 may be an electronic anode assembly; or the second anode assembly may be a physical anode assembly, and the first anode assembly may be an electronic anode assembly; all of the above may achieve the purpose of the present application, and their purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and all should fall within the protection scope of the present application.

[0044] In some examples, such as Figure 1 , Figure 3 , Figure 5 , Fig.12 , Fig.15 , Fig.17 and Fig.19 As shown, the first anode assembly 400 is provided with a first wiring portion 421, the second anode assembly 500 is provided with a second wiring portion 521, and the mounting member 600 is provided with a third wiring portion 611. The first wiring portion 421, the second wiring portion 521 and the third wiring portion 611 are all arranged to be located outside the inner tank 100, and the third wiring portion 611 is also arranged to be electrically connected to the inner tank 100 and the control device 200, that is, the inner tank 100 is electrically connected to the control device 200 through the third wiring portion 611.

[0045] The control device 200 is also electrically connected to the fourth connection part 310, one of the fifth connection part 320 and the sixth connection part 330 is electrically connected to the first connection part 421, and the other is electrically connected to the second connection part 521, and the fourth connection part 310 is configured to be electrically connected to any one of the fifth connection part 320 and the sixth connection part 330. After the inner tank 100 is filled with tap water, the portion of the first anode assembly 400 extending into the inner tank 100 is electrically connected to the inner tank 100 through the tap water in the inner tank 100, and the portion of the second anode assembly 500 extending into the inner tank 100 is also electrically connected to the inner tank 100 through the tap water in the inner tank 100.

[0046] In one embodiment, if Fig. 20 As shown, the first anode assembly 400 is a physical anode assembly, the second anode assembly 500 is an electronic anode assembly, the fifth connection portion 320 is electrically connected to the first connection portion 421, and the sixth connection portion 330 is electrically connected to the second connection portion 521. When the water heater is powered on, the fourth connection portion 310 is electrically connected to the sixth connection portion 330, and the inner tank 100 is protected from corrosion and water leakage by the electronic anode assembly, and this process does not consume the physical anode assembly; when the water heater is powered off, the fourth connection portion 310 is electrically connected to the fifth connection portion 320, and the inner tank 100 is protected from corrosion and water leakage by the physical anode assembly, solving the problem that the electronic anode assembly cannot prevent the inner tank 100 from corrosion when the water heater is powered off. It can be that the switch 300 is set as a single-pole double-throw relay.

[0047] In some examples, such as Figures 1 to 4 , Figure 8 , Fig. 9 , Figures 15 to 18 As shown, the first anode assembly 400 includes: a first anode body 410 with a penetration hole, the first anode body 410 includes an insertion section 411, a stop surface 412 and a penetration section 413 arranged in sequence, the insertion section 411 is arranged to be inserted into the inner tank 100, the stop surface 412 is arranged to be sealed against the mounting member 600, and the penetration section 413 is arranged to be penetrated through the mounting member 600 and extend to the side of the mounting member 600 that is away from the insertion section 411, that is, the penetration section 413 extends to the outside of the inner tank 100; a first locking washer 420 and a first locking member 430, the first locking washer The ring 420 and the first locking member 430 are located on the side of the mounting member 600 that is away from the extension section 411, the first locking member 430 is installed on the penetration section 413, the first locking washer 420 is pressed between the first locking member 430 and the mounting member 600, and is insulated from the third wiring portion, the penetration section 413 is electrically connected to the first locking washer 420, and the first wiring portion 421 is located on the first locking washer 420; the third locking member 440, the third locking member 440 is sealingly sleeved on the second anode assembly 500, and is sealingly matched with the end of the extension section 411 away from the mounting member 600.

[0048] Among them, Figures 3 to 5 , Figures 8 to 10 , Fig.12 , Figures 15 to 19 As shown, a stepped hole is provided inside the mounting member 600, and the stepped surface of the stepped hole faces the stop surface 412. The stop surface 412 is convexly provided with an annular sealing rib 4174, and the sealing rib 4174 abuts against the stepped surface to achieve sealing cooperation between the stop surface 412 and the stepped surface; the penetration section 413 is provided with an external thread, and the first locking member 430 is a locking nut, which is located outside the inner liner 100 and is screwed on the penetration section 413, and the inner ring of the first locking washer 420 is provided with (a plurality of circumferentially spaced) locking teeth, the first locking washer 420 is sleeved on the penetration section 413 and pressed between the first locking member 430 and the mounting member 600, the first locking washer 420 is insulated from the third wiring portion, and the locking teeth of the first locking washer 420 abut against the penetration section 413 to ensure that the first locking washer 420 is electrically connected to the penetration section 413. The first locking washer 420 is provided with a first plug-in terminal, and the first wiring portion 421 is the first plug-in terminal.

[0049] Furthermore, if Figure 2 , Figure 3 , Figures 8 to 10 , Fig.17As shown, the first anode body 410 includes: a first anode casing 414; a connecting casing, the connecting casing includes a casing section, a stop section and a penetration section 413 connected in sequence, the outer diameter of the stop section is larger than the outer diameter of the casing section, the outer diameter of the stop section is larger than the outer diameter of the penetration section 413, the first anode casing 414 is sleeved outside the casing section and abuts against one end of the casing section adjacent to the stop section, and one end of the stop section adjacent to the penetration section 413 abuts against the stepped surface of the stepped hole of the mounting member 600; an insulating seal 417, the insulating seal 417 is arranged between the connecting casing and the mounting member 600, and seals the position where the first anode casing 414 and the stop section abut, the stop surface 412 is located on the insulating seal 417, and the extending section 411 includes at least part of the insulating seal 417, the casing section and the stop section. The insulating seal 417 and the first anode casing 414 and the insulating seal 417 and the connecting casing are matched through the inclined surface structure, which can reduce the difficulty of interference assembly of the insulating seal 417, the connecting casing and the first anode casing 414. The insulating seal 417 can be a silicone part, a rubber part or a plastic part, etc., all of which can achieve the purpose of this application, and their purpose does not deviate from the design concept of the utility model, and will not be repeated here, and all should belong to the protection scope of this application.

[0050] like Figure 3 , Figures 8 to 10As shown, the insulating seal 417 includes a first annular circumferential wall 4171, an annular end wall 4172 and a second annular circumferential wall 4173, the annular end wall 4172 is located between the first annular circumferential wall 4171 and the second annular circumferential wall 4173, the outer diameter of the first annular circumferential wall 4171 is greater than the outer diameter of the second annular circumferential wall 4173, and the thickness of the annular end wall 4172 is greater than the thickness of the first annular circumferential wall 4171, the thickness of the annular end wall 4172 is greater than the thickness of the second annular circumferential wall 4173, one end of the first annular circumferential wall 4171 is connected to the outer edge of the annular end wall 4172, one end of the second annular circumferential wall 4173 is connected to the inner edge of the annular end wall 4172, and the sealing rib 4174 is located on the side of the annular end wall 4172 facing away from the first annular circumferential wall 4171, and is protruded from the annular end wall 4172. The first annular circumferential wall 4171 is an interference sealing sleeve on the first anode casing 414 and the stop section, the second annular circumferential wall 4173 is sleeved on the penetration section 413, and the first annular circumferential wall 4171 is interference fitted into the large hole section of the stepped hole, the second annular circumferential wall 4173 is interference fitted into the small hole section of the stepped hole, the stop section presses the annular end wall 4172 on the step surface of the stepped hole so that the sealing rib is pressed against the step surface, and three sealing structures are arranged in the stepped hole to better ensure the sealing between the first anode body 410 and the mounting piece 600 and prevent water leakage between the first anode body 410 and the mounting piece 600. The thickness of the annular end wall 4172 is greater than the thickness of the first annular circumferential wall 4171, and the thickness of the annular end wall 4172 is greater than the thickness of the second annular circumferential wall 4173. In this way, the annular end wall 4172 is less likely to deform and can better press the sealing rib 4174 onto the step surface, thereby achieving a better sealing effect between the sealing rib 4174 and the step surface.

[0051] Furthermore, if Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.16 and Fig.17 As shown, the first anode casing 414 is a magnesium tube, the connecting casing includes a steel tube 415 and a fixed head 416, the middle part of the fixed head 416 forms a stopper section, one end of the fixed head 416 is provided with a first stud with external threads, the other end of the fixed head 416 is provided with a second stud with external threads, the first stud is screwed on one end of the steel tube 415, the magnesium tube is sleeved outside the steel tube 415 and abuts against the fixed head 416, and the outer diameter of the magnesium tube is substantially the same as the outer diameter of the middle part of the fixed head 416. The casing section includes the steel tube 415 and the first stud, the penetration section 413 includes the second stud, and the stopper section includes the portion of the fixed head 416 located between the first stud and the second stud.

[0052] In some examples, such as Figures 2 to 4 , Figure 6 , Figure 7 , Figures 16 to 18As shown, the second anode assembly 500 includes: an anode rod 510, the anode rod 510 includes a first section 511, a second section 512 and a third section 513 which are arranged in sequence, the second section 512 is fixed in the penetration hole and is sealed with the first anode assembly 400, the first section 511 extends from the penetration hole and is arranged to be located in the inner liner 100, the third section 513 extends from the penetration hole and is arranged to be located outside the inner liner 100, and the third section 513 is protruding with a stopper 514; a second locking washer 520 and a second locking member 530, the second locking member 530 is located on the side of the stopper 514 facing away from the mounting member 600, and is installed on the third section 513, and the second locking washer 520 is pressed between the second locking member 530 and the stopper 514; wherein the second locking washer 520 is electrically connected to the third section 513, and the second wiring portion 521 is located on the second locking washer 520.

[0053] like Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.16 and Fig.17 As shown, the length of the magnesium tube is substantially the same as that of the steel tube 415, a third stud 441 with external threads is provided at one end of the third locking member 440, a matching portion 515 is provided at the second section 512 of the anode rod 510, the third stud 441 is screwed on the other end of the steel tube 415 and sealed against the matching portion 515, the third locking member 440 is sealed against the end of the magnesium tube away from the fixed head 416, so that the third locking member 440 is sealed and sleeved on the anode rod 510 and sealed with the end of the magnesium tube away from the fixed head 416. The outer peripheral surface of the stopper 514 is convexly provided with an annular first limiting platform 516, and the mounting nut 550 with a second limiting platform on the inner peripheral surface is sleeved on the stopper 514, and the mounting nut 550 is screwed on the penetration section 413, and the second limiting platform is pressed on the first limiting platform 516 toward the side of the mounting member 600. The above schemes jointly realize the axial positioning of the anode rod 510. The mounting nut 550 is insulated from the stopper 514, and a sealing ring is used to seal the penetration section 413 and the stopper 514. Alternatively, the mounting nut 550 is a plastic nut; or alternatively, the mounting nut 550 is a metal nut, and an insulating member is used to isolate the mounting nut 550 from the stopper 514.

[0054] like Figure 2 , Figure 4 , Fig.11 , Fig.16 and Fig.18As shown, the second locking member 530 is a locking nut, which is located on the side of the stopper 514 away from the mounting member 600 and is screwed on the third section 513. The inner ring of the second locking washer 520 is provided with (multiple) locking teeth arranged at intervals along the circumferential direction. The second locking washer 520 is sleeved on the third section 513 and pressed between the second locking member 530 and the stopper 514. The stopper 514 is insulated from the first locking member 430. The locking teeth of the second locking washer 520 abut against the third section 513 to ensure that the second locking washer 520 is electrically connected to the third section 513. The second locking washer 520 is provided with a second plug-in terminal, and the second wiring portion 521 is the second plug-in terminal.

[0055] Furthermore, if Figure 2 , Figure 3 , Figure 6 , Figure 7 , Fig.16 and Fig.17 As shown, the second anode assembly 500 further includes: an insulating member 540, which is disposed between the anode rod 510 and the connecting sleeve, and is used to prevent the anode rod 510 and the connecting sleeve from contacting and electrically connecting (it can be that the insulating member 540 is assembled with the anode rod 510, and the stopper 514 is located on the insulating member 540). It can be that the insulating member 540 is set as a plastic member, a rubber member, or a silicone member, etc., which can achieve the purpose of this application, and its purpose does not deviate from the design concept of this utility model, and will not be repeated here, and should all fall within the protection scope of this application.

[0056] In some exemplary embodiments, Fig.17 As shown, the mounting member 600 includes a metal member, the metal member sealing sleeve is arranged on the connecting sleeve, and is configured to be sealed and screwed on the inner tank 100 of the water heater, and the third wiring portion is located on the metal member.

[0057] Alternatively, a fourth stud with internal threads is protruded from one side of the metal member facing the outside of the inner container 100 , and the third connecting portion is the fourth stud. Alternatively, the metal member and the first locking washer 420 are insulated by an insulating pad 450 .

[0058] In some other exemplary embodiments, Figure 3 , Fig.13 and Fig.14 As shown, the mounting member 600 includes a metal member 610 and a plastic member 620 . The plastic member 620 is sealed and sleeved on the connecting sleeve. The metal member 610 is sleeved outside the plastic member 620 and is configured to be sealed and screwed on the inner tank 100 of the water heater. The third wiring portion is located on the metal member 610 .

[0059] like Fig.13 and Fig.14As shown, the plastic part 620 and the metal part 610 are plugged together and fixed together through the anti-rotation rib structure to prevent the plastic part 620 and the metal part 610 from rotating relative to each other after assembly. Moreover, the plastic part 620 isolates the metal part 610 and the first locking washer 420, thereby achieving insulation between the metal part 610 and the first locking washer 420. It can be that a fourth stud with an internal thread is convexly provided on the side of the metal part 610 facing the outside of the inner liner 100, and the third wiring portion 611 is the fourth stud. It can be that the plastic part 620 has a flange edge 621, and the flange edge 621 is located on the side of the metal part 610 facing the outside of the inner liner 100, and the metal part 610 is against the flange edge 621, and the fourth stud is penetrated in the flange edge 621.

[0060] To sum up, in the anti-corrosion device provided in the embodiment of the utility model, the second anode component is inserted into the insertion hole of the first anode component, so that the inner tank of the water heater only needs to open one installation hole for installing the anti-corrosion device. Compared with opening two installation holes to respectively install the first anode component and the second anode component, the structure of the inner tank of this scheme is simpler, and the installation and after-sales maintenance are also more convenient, and the probability of corrosion and leakage of the inner tank at the installation hole is also smaller; moreover, two anode components are used to prevent corrosion of the inner tank, and the inner tank is also less likely to corrode and leak.

[0061] Furthermore, one of the first anode assembly and the second anode assembly is configured as a physical anode assembly, and the other of the first anode assembly and the second anode assembly is configured as an electronic anode assembly. When the water heater is powered on, the electronic anode assembly is used to protect the inner tank from corrosion and leakage, and this process does not consume the physical anode assembly. When the water heater is powered off, the physical anode assembly is used to protect the inner tank from corrosion and leakage, thereby solving the problem that the electronic anode assembly cannot prevent the inner tank from corrosion when the water heater is powered off. Since the water heater rarely loses power, the physical anode assembly is basically not consumed, so the inner tank of the water heater of this scheme is less prone to corrosion and leakage.

[0062] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0064] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. An anti-corrosion device, characterized in that: include: The first anode assembly is provided with a penetration hole; A second anode assembly is sealed and penetrated in the penetration hole and is insulated from the first anode assembly; A mounting member, a sealing sleeve is provided on the first anode assembly; The mounting member is configured to be sealed and mounted on the inner tank of the water heater, and the first anode assembly and the second anode assembly are configured to at least partially extend into the inner tank and be insulated from the inner tank.

2. The anti-corrosion device according to claim 1, characterized in that: The first anode assembly is provided with a first wiring portion, the second anode assembly is provided with a second wiring portion, and the mounting member is provided with a third wiring portion. The first wiring portion, the second wiring portion and the third wiring portion are all arranged to be located outside the inner pot, and the third wiring portion is also arranged to be electrically connected to the inner pot.

3. The anti-corrosion device according to claim 2, characterized in that: The first anode assembly comprises: The first anode body having a penetration hole further comprises an insertion section, a stop surface and a penetration section which are sequentially arranged, wherein the insertion section is arranged to be inserted into the inner container, the stop surface is arranged to be sealed against the mounting member, and the penetration section is arranged to be inserted through the mounting member and extend to a side of the mounting member which is away from the insertion section; A first locking washer and a first locking member are located on a side of the mounting member facing away from the insertion section, the first locking member is installed on the penetration section, the first locking washer is pressed between the first locking member and the mounting member and is insulated from the third wiring portion, the penetration section is electrically connected to the first locking washer, and the first wiring portion is located on the first locking washer; The third locking member is sealed and sleeved on the second anode assembly and is sealed and matched with an end of the extending section away from the mounting member.

4. The anti-corrosion device according to claim 3, characterized in that: The first anode body comprises: a first anode casing; A connecting sleeve with a penetration hole, comprising a sleeve section, a stop section and the penetration section connected in sequence, wherein the first anode sleeve is sleeved outside the sleeve section and abuts against one end of the stop section adjacent to the sleeve section, and one end of the stop section adjacent to the penetration section abuts against the mounting member; An insulating seal is provided between the connecting sleeve and the mounting member and seals the position where the first anode sleeve and the stop section abut each other. The stop surface is located on the insulating seal. The extending section includes the insulating seal, the sleeve section and the stop section.

5. The anti-corrosion device according to claim 2, characterized in that: The second anode assembly comprises: an anode rod, comprising a first section, a second section and a third section arranged in sequence, wherein the second section is fixed in the through hole and is sealed with the first anode assembly, the first section extends from the through hole and is arranged to be located in the inner container, the third section extends from the through hole and is arranged to be located outside the inner container, and a stopper is convexly provided on the third section; a second locking washer and a second locking member, wherein the second locking member is located at a side of the stopper portion facing away from the mounting member and is mounted on the third section, and the second locking washer is pressed between the second locking member and the stopper portion; Wherein, the second locking washer is electrically connected to the third section, and the second wiring portion is located on the second locking washer.

6. The anti-corrosion device according to claim 5, characterized in that: The second anode assembly further comprises: An insulating member is provided between the anode rod and the first anode assembly.

7. The anti-corrosion device according to claim 2, characterized in that: The mounting member comprises a metal member, the metal member is sealingly sleeved on the first anode assembly and is configured to be sealingly screwed on the inner tank of the water heater, and the third wiring portion is located on the metal member.

8. The anti-corrosion device according to claim 2, characterized in that: The mounting member includes a metal member and a plastic member. The plastic member is sealingly sleeved on the first anode assembly. The metal member is sleeved on the plastic member and configured to be sealingly screwed on the inner tank of the water heater. The third wiring portion is located on the metal member.

9. The anti-corrosion device according to any one of claims 1 to 8, characterized in that: One of the first anode assembly and the second anode assembly is a physical anode assembly and the other is an electronic anode assembly.

10. A water heater, characterized in that: The invention comprises an inner tank, a control device, a switch component and an anti-corrosion device according to any one of claims 1 to 9, wherein the inner tank is provided with a mounting hole, the mounting component is sealingly mounted in the mounting hole, the first anode assembly and the second anode assembly both at least partially extend into the inner tank from the mounting hole, the switch component comprises a fourth wiring portion, a fifth wiring portion and a sixth wiring portion, the inner tank is electrically connected to the fourth wiring portion through the control device, one of the fifth wiring portion and the sixth wiring portion is electrically connected to the first anode assembly, and the other is electrically connected to the second anode assembly, and the fourth wiring portion is configured to be electrically connected to any one of the fifth wiring portion and the sixth wiring portion.

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