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 mounting piece, a first connecting piece and a second connecting piece, the first anode assembly and the second anode assembly are hermetically arranged in the two penetrating holes in a penetrating manner in a one-to-one correspondence manner, and the first anode assembly and the second anode assembly are insulated from each other; 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 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 by the embodiment of the utility model includes: a mounting piece, which is provided with two penetration holes; a first anode assembly and a second anode assembly, which are sealed and penetrated in the two penetration holes one by one, and the first anode assembly and the second anode assembly are insulated from each other; wherein the mounting piece is configured to be sealed and installed in 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 are 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, any one of the first anode assembly and the second anode assembly includes: an anode body, including an extension section, a stop section and a penetration section arranged in sequence, the extension section is arranged to extend into the inner tank, the penetration hole is a stepped hole, the stop section is arranged at the large hole section of the stepped hole, the penetration section is arranged at the small hole section of the stepped hole and extends to the side of the mounting member facing away from the extension section; a first locking washer and a locking member, which are located on the side of the mounting member facing away from the extension section, the locking member is installed on the penetration section, the first locking washer is pressed between the 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.

[0010] In some exemplary embodiments, any one of the first anode assembly and the second anode assembly further includes: a sealing sleeve having a first annular circumferential wall and an annular end wall, the first annular circumferential wall of the sealing sleeve being located between the circumferential wall of the stop section and the large hole section of the stepped hole, and the annular end wall of the sealing sleeve being located between the stop surface of the stop section and the step surface of the stepped hole.

[0011] In some exemplary embodiments, any one of the first anode assembly and the second anode assembly further includes: a separation sleeve having an annular circumferential wall and a flange flange, the sealing sleeve also having a second annular circumferential wall, the annular circumferential wall of the separation sleeve and the second annular circumferential wall of the sealing sleeve are both located between the circumferential wall of the penetration section and the small hole section of the stepped hole, and are sealed and abutted, and the flange flange of the separation sleeve separates the mounting member and the first locking washer.

[0012] In some exemplary embodiments, the anti-corrosion device also includes: a second locking washer, which is sleeved on the annular circumferential wall of the separation sleeve and pressed between the flange flange of the separation sleeve and the mounting member, the second locking washer is electrically connected to the inner tank through the mounting member, and the third wiring portion is located on the second locking washer.

[0013] In some exemplary embodiments, the mounting member is a metal member.

[0014] In some exemplary embodiments, the mounting member includes an insulating member and an annular metal member, the insulating member is fixed inside the metal member, the two through holes are both located in the insulating member, and the metal member is configured to be sealed and screwed onto the inner tank of the water heater.

[0015] In some exemplary embodiments, the metal member is provided with a terminal stud, and the third terminal portion is the terminal stud.

[0016] 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.

[0017] 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 installed in 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.

[0018] The anti-corrosion device provided by the embodiment of the utility model has a first anode assembly and a second anode assembly which are sealed and installed in two holes of the mounting member in a one-to-one correspondence. In this way, the inner tank of the water heater only needs to have one mounting hole for installing the anti-corrosion device. By installing the mounting member in the mounting hole, the anti-corrosion device can be installed on the inner tank. Compared with having two mounting holes in the inner tank to respectively install the first anode assembly and the second anode assembly, this solution has a simpler structure for 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 mounting hole is also smaller. Furthermore, two anode assemblies are used to prevent corrosion of the inner tank, and the inner tank is less likely to corrode and leak.

[0019] 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.

[0020] 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

[0021] 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.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an anti-corrosion device provided in some embodiments;

[0023] Figure 2 for Figure 1 A schematic cross-sectional view of an example of an anti-corrosion device is shown;

[0024] Figure 3 for Figure 2 A schematic diagram of the exploded structure of the anti-corrosion device shown;

[0025] Figure 4 for Figure 1 A schematic cross-sectional view of another example of an anti-corrosion device is shown;

[0026] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the anti-corrosion device shown;

[0027] Figure 6 for Figure 1 Schematic diagram of the structure of the electron anode;

[0028] Figure 7 for Figure 1 Schematic diagram of the structure of the physical anode;

[0029] Figure 8 for Figure 3 and Figure 5 A schematic diagram of the three-dimensional structure of the sealing sleeve of the physical anode;

[0030] Fig. 9 for Figure 8 A schematic cross-sectional structural diagram of the sealing sleeve shown;

[0031] Fig.10 for Figure 3 and Figure 5 A schematic diagram of the three-dimensional structure of the sealing sleeve of the electron anode;

[0032] Fig.11 for Fig.10 A schematic cross-sectional structural diagram of the sealing sleeve shown;

[0033] Fig.12 for Figure 3 A schematic diagram of the three-dimensional structure of the separation sleeve of the electron anode;

[0034] Fig.13 for Figure 3 A schematic diagram of the three-dimensional structure of the separation sleeve of the physical anode from one perspective;

[0035] Fig.14 for Figure 3 A schematic diagram of the three-dimensional structure of the separation sleeve of the physical anode in another perspective;

[0036] Fig.15 for Figure 3 A schematic diagram of the three-dimensional structure of the second locking gasket;

[0037] Fig.16 for Figure 3 A schematic diagram of the three-dimensional structure of the mounting part;

[0038] Fig.17 for Figure 5 Schematic diagram of the exploded structure of the mounting parts;

[0039] Fig.18 for Figure 5 A schematic diagram of the three-dimensional structure of the mounting part;

[0040] Fig.19 A schematic diagram of the electrical control structure of a water heater provided in some embodiments.

[0041] The corresponding relationship between the reference numerals and the component names is as follows:

[0042] 100 liner, 200 control device, 300 switch, 310 fourth connection part, 320 fifth connection part, 330 sixth connection part, 411 third connection part, 412 insulating part, 4121 flange flange, 413 metal part, 414 through hole, 420 first anode assembly, 421 first connection part, 422 anode body, 4221 insertion section, 4222 stop section, 4223 through section, 423 first locking washer, 424 locking part, 425 seal Sealing sleeve, 426 separating sleeve, 4261 positioning boss, 4262 groove, 430 second anode assembly, 431 second wiring portion, 432 anode body, 4321 insertion section, 4322 stop section, 4323 penetration section, 433 first locking washer, 434 locking piece, 435 sealing sleeve, 436 separating sleeve, 440 second locking washer, 450 second locking washer, 500 gasket, 600 O-ring, 700 tap water, 800 elastic gasket. DETAILED DESCRIPTION

[0043] 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.

[0044] The water heater provided in the embodiment of the utility model is as follows Fig.19 As shown, it includes an inner container 100, a control device 200, a switch component 300 and an anti-corrosion device, and the control device 200 and the switch component 300 are both located outside the inner container 100. Figures 1 to 5As shown, the anti-corrosion device includes: a mounting member, which is provided with two penetration holes 414; a first anode assembly 420 and a second anode assembly 430, which are sealed and penetrated in the two penetration holes 414 one by one, and the first anode assembly 420 and the second anode assembly 430 are insulated from each other. The inner pot 100 is provided with a mounting hole, and the mounting member is sealed and installed in the mounting hole. The first anode assembly 420 and the second anode assembly 430 are at least partially extended into the inner pot 100 and are insulated from the inner pot 100. The switch 300 includes a fourth wiring part 310, a fifth wiring part 320 and a sixth wiring part 330. The inner pot 100 is electrically connected to the fourth wiring part 310 through the control device 200, one of the fifth wiring part 320 and the sixth wiring part 330 is electrically connected to the first anode assembly 420, and the other is electrically connected to the second anode assembly 430, and the fourth wiring part 310 is electrically connected to any one of the fifth wiring part 320 and the sixth wiring part 330. After the tap water 700 is passed into the inner container 100, the portion of the first anode assembly 420 extending into the inner container 100 is electrically connected to the inner container 100 through the tap water 700 in the inner container 100, and the portion of the second anode assembly 430 extending into the inner container 100 is also electrically connected to the inner container 100 through the tap water 700 in the inner container 100. Reference numeral 600 in the figure is an O-ring.

[0045] The anti-corrosion device, the first anode assembly 420 and the second anode assembly 430 are sealed and installed in two holes 414 of the mounting member in a one-to-one correspondence, so that the inner tank 100 of the water heater only needs to have one mounting hole for installing the anti-corrosion device. By installing the mounting member in the mounting hole, the anti-corrosion device can be installed on the inner tank 100. Compared with the inner tank 100 having two mounting holes for respectively installing the first anode assembly 420 and the second anode assembly 430, this solution has a simpler structure of the inner tank 100, and is more convenient to install and maintain after sales. In addition, the probability of corrosion and leakage of the inner tank 100 at the mounting hole is also smaller. Moreover, two anode assemblies are used to prevent the corrosion of the inner tank 100, and the inner tank 100 is less likely to corrode and leak.

[0046] In some examples, one of the first anode assembly 420 and the second anode assembly 430 is configured as a physical anode assembly, and the other of the first anode assembly 420 and the second anode assembly 430 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.

[0047] It is possible that the first anode assembly 420 is a physical anode assembly and the second anode assembly 430 is an electronic anode assembly; or it is possible that the second anode assembly 430 is a physical anode assembly and the first anode assembly 420 is an electronic anode assembly; all of the above can 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.

[0048] In some exemplary embodiments, the first anode assembly 420 is provided with a first wiring portion 421, the second anode assembly 430 is provided with a second wiring portion 431, and the mounting member is provided with a third wiring portion 411. The first wiring portion 421, the second wiring portion 431 and the third wiring portion 411 are all configured to be located outside the inner tank 100, and the third wiring portion 411 is also configured 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 411.

[0049] The control device 200 is also electrically connected to the fourth connection portion 310, one of the fifth connection portion 320 and the sixth connection portion 330 is electrically connected to the first connection portion 421, and the other is electrically connected to the second connection portion 431, and the fourth connection portion 310 is configured to be electrically connected to any one of the fifth connection portion 320 and the sixth connection portion 330. After the tap water 700 is passed into the inner tank 100, the portion of the first anode assembly 420 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 430 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.

[0050] In one embodiment, if Fig.19 As shown, the first anode assembly 420 is a physical anode assembly, the second anode assembly 430 is an electronic anode assembly, the fifth connection part 320 is electrically connected to the first connection part 421, and the sixth connection part 330 is electrically connected to the second connection part 431. When the water heater is powered on, the fourth connection part 310 is electrically connected to the sixth connection part 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 part 310 is electrically connected to the fifth connection part 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.

[0051] In some exemplary embodiments, Figure 2 , Figure 3 , Figure 7 and Fig.16As shown, the first anode assembly 420 includes: an anode body 422, the anode body 422 includes an insertion section 4221, a stop section 4222 and a penetration section 4223 which are sequentially arranged, the insertion section 4221 is inserted into the inner tank 100, the penetration hole 414 (for installing the first anode assembly 420) is a stepped hole, the large hole section of the stepped hole faces the inside of the inner tank 100, the stop section 4222 is penetrated in the large hole section of the stepped hole and is sealed with the hole wall of the stepped hole, the penetration section 4223 is arranged in the small hole section of the stepped hole and extends to the insertion section 414 facing the back of the mounting member. 221, that is, the penetration section 4223 extends from the small hole section of the stepped hole to the outside of the inner liner 100; the first locking washer 423 and the locking member 424, the first locking washer 423 and the locking member 424 are both located on the side of the mounting member that is away from the extension section 4221, the locking member 424 is installed on the penetration section 4223, the first locking washer 423 is pressed between the locking member 424 and the mounting member, and is insulated from the third wiring portion 411, the penetration section 4223 is electrically connected to the first locking washer 423, and the first wiring portion 421 is located on the first locking washer 423. It can be that the mounting member is a metal member 413, and an insulating gasket is arranged between the metal member 413 and the first locking washer 423. It can be that an elastic gasket 800 is arranged between the first locking washer 423 and the locking member 424.

[0052] Among them, a plug-in terminal is provided at the edge of the first locking washer 423, and the first wiring portion 421 is a plug-in terminal of the first locking washer 423. The penetration section 4223 is provided with an external thread, and the locking member 424 is a locking nut, which is screwed onto the external thread of the penetration section 4223. The inner ring of the first locking washer 423 is provided with (multiple) locking teeth arranged at intervals along the circumferential direction, the first locking washer 423 is sleeved on the penetration section 4223 and pressed between the locking member 424 and the mounting member, the first locking washer 423 is insulated from the third wiring portion 411, and the locking teeth of the first locking washer 423 abut against the penetration section 4223 to ensure that the first locking washer 423 is electrically connected to the penetration section 4223. The anode body 422 of the first anode assembly 420 includes a physical anode, which can be a magnesium rod, and the magnesium rod at least partially extends into the interior of the inner liner 100.

[0053] In some examples, such as Figure 2 , Figure 3 , Figure 8 and Fig. 9As shown, the first anode assembly 420 further includes: a sealing sleeve 425 having a first annular peripheral wall and an annular end wall. The first annular peripheral wall of the sealing sleeve 425 is located between the peripheral wall of the stopper section 4222 and the large hole section of the stepped hole, and is used to seal the gap between the peripheral wall of the stopper section 4222 and the large hole section of the stepped hole. The annular end wall of the sealing sleeve 425 is located between the stopper surface of the stopper section 4222 and the step surface of the stepped hole, and is used to seal the gap between the stopper surface of the stopper section 4222 and the step surface of the stepped hole.

[0054] Among them, Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, the annular end wall of the sealing sleeve 425 is convexly provided with a sealing rib, which is pressed against the stepped surface of the stepped hole, so that the sealing performance between the annular end wall of the sealing sleeve 425 and the stepped surface of the stepped hole can be improved. It can be that the first annular peripheral wall is firstly sleeved with an interference seal at the stopper section 4222, and after the first annular peripheral wall and the stopper section 4222 are assembled, they are inserted into the large hole section of the stepped hole by interference, and the stopper section 4222 presses the annular end wall on the stepped surface of the stepped hole, that is, the sealing rib is pressed against the stepped surface, and this scheme can better ensure the sealing between the anode body 422 of the first anode assembly 420 and the mounting part, and prevent water leakage between the anode body 422 and the mounting part. It can be that the first annular peripheral wall and the peripheral wall at the stopper section 4222 are matched through a conical surface structure, which is more conducive to the first annular peripheral wall being quickly sleeved at the stopper section 4222. The thickness of the annular end wall may be greater than that of the first annular circumferential wall, so that the annular end wall has higher strength and is less prone to deformation, and can better compact the sealing rib onto the step surface of the step hole, resulting in a better sealing effect between the sealing rib and the step surface of the step hole.

[0055] In some examples, such as Figure 2 , Figure 3 , Fig.13 and Fig.14As shown, the first anode assembly 420 further includes: a separation sleeve 426 having an annular circumferential wall and a flange flange, and the sealing sleeve 425 also has a second annular circumferential wall, the annular circumferential wall of the separation sleeve 426 and the second annular circumferential wall of the sealing sleeve 425 are both located between the circumferential wall of the penetration section 4223 and the small hole section of the stepped hole, and the annular circumferential wall of the separation sleeve 426 and the second annular circumferential wall of the sealing sleeve 425 are sealed and abutted against each other at one end, and the flange flange of the separation sleeve 426 is located outside the inner tank 100 and is pressed against the inner tank 100 toward the inner tank 100. 00 between the outer end surface and the first locking washer 423, the flange flange of the separation sleeve 426 separates the mounting piece and the first locking washer 423, at this time the mounting piece can be set as a metal piece 413 of an integral structure, the metal piece 413 and the first locking washer 423 are separated and insulated from each other by the flange flange of the separation sleeve 426, the annular peripheral wall of the separation sleeve 426 separates the penetration section 4223 and the metal piece 413, the metal piece 413 is set to be screwed into the mounting hole of the inner liner 100, so that the mounting piece has a simple structure and is easy to install. Among them, the second annular peripheral wall of the sealing sleeve 425 and the small hole section of the stepped hole are also set to be sealed.

[0056] In some examples, such as Figure 2 , Figure 3 and Fig.15 As shown, the anti-corrosion device further includes: a second locking washer 440, which is sleeved on the annular circumferential wall of the separation sleeve 426 and pressed between the flange flange of the separation sleeve 426 and the mounting member, and the second locking washer 440 is electrically connected to the inner liner 100 through the mounting member, and the third wiring portion 411 is located on the second locking washer 440. The second locking washer 440 is sleeved on the annular circumferential wall of the separation sleeve 426 and pressed between the flange flange of the separation sleeve 426 and the mounting member, so that the second sealing washer is insulated from the anode body 422 of the first anode assembly 420. At this time, the mounting member can be set as a metal member 413 of an integral structure, and the second locking washer 440 is electrically connected to the inner liner 100 through the metal member 413. Among them, the second locking washer 440 is provided with a plug-in terminal, and the third wiring portion 411 includes the plug-in terminal of the second locking washer 440. The separation sleeve 426 is configured as a silicone sleeve or a rubber sleeve made of insulating material.

[0057] Among them, Figures 13 to 15 As shown, the inner ring of the second locking washer 440 is provided with (multiple) locking teeth spaced apart in the circumferential direction, and the flange of the separation sleeve 426 is provided with (multiple) positioning bosses 4261 spaced apart in the circumferential direction on one side facing the second locking washer 440. The positioning bosses 4261 are inserted into the notches formed by the locking teeth to position the second locking washer 440 in the circumferential direction. Fig.13 and Fig.14As shown, the flange of the separation sleeve 426 has grooves 4262 (multiple grooves arranged at intervals along the circumferential direction) on one side facing the first locking washer 423 , and the grooves 4262 correspond to the positioning bosses 4261 one by one.

[0058] In some examples, such as Figure 2 , Figure 3 , Figure 6 and Fig.16 As shown, the second anode assembly 430 includes: an anode body 432, the anode body 432 includes an insertion section 4321, a stop section 4322 and a penetration section 4323 arranged in sequence, the insertion section 4321 is arranged to extend into the inner tank 100, the penetration hole 414 (for installing the second anode assembly 430) is a stepped hole, the large hole section of the stepped hole faces the inside of the inner tank 100, the stop section 4322 is arranged in the large hole section of the stepped hole and is sealed with the hole wall of the stepped hole, and the penetration section 4323 is arranged in the small hole section of the stepped hole , and extends to the side of the mounting member facing away from the extending section 4321; the first locking washer 433 and the locking member 434, the first locking washer 433 and the locking member 434 are both located on the side of the mounting member facing away from the extending section 4321, the locking member 434 is installed on the penetration section 4323, the first locking washer 433 is pressed between the locking member 434 and the mounting member, and is insulated from the third wiring portion 411, the penetration section 4323 is electrically connected to the first locking washer 433, and the first wiring portion 421 is located on the first locking washer 433. The mounting member may be a metal member 413, and an insulating gasket is provided between the metal member 413 and the first locking washer 433. An elastic gasket 800 may be provided between the first locking washer 433 and the locking member 434.

[0059] The first locking washer 433 is provided with a plug-in terminal at the edge thereof, and the second wiring portion 431 is a plug-in terminal of the first locking washer 433. The penetration section 4323 is provided with an external thread, and the locking member 434 is a locking nut, which is screwed onto the external thread of the penetration section 4323. The inner ring of the first locking washer 433 is provided with (multiple) locking teeth arranged at intervals along the circumferential direction, the first locking washer 433 is sleeved on the penetration section 4323 and pressed between the locking member 434 and the mounting member, the first locking washer 433 is insulated from the third wiring portion 411, and the locking teeth of the first locking washer 433 abut against the penetration section 4323, ensuring that the first locking washer 433 is electrically connected to the penetration section 4323. The anode body 432 of the second anode assembly 430 includes an electronic anode, and the electronic anode at least partially extends into the interior of the inner tank 100.

[0060] In some examples, such as Figure 2 , Figure 3 , Fig.10 and Fig.11As shown, the second anode assembly 430 further includes: a sealing sleeve 435 having a first annular peripheral wall and an annular end wall. The first annular peripheral wall of the sealing sleeve 435 is located between the peripheral wall of the stopper section 4322 and the large hole section of the stepped hole, and is used to seal the gap between the peripheral wall of the stopper section 4322 and the large hole section of the stepped hole. The annular end wall of the sealing sleeve 435 is located between the stopper surface of the stopper section 4322 and the step surface of the stepped hole, and is used to seal the gap between the stopper surface of the stopper section 4322 and the step surface of the stepped hole.

[0061] Among them, Figure 2 , Figure 3 , Fig.10 and Fig.11 As shown, the annular end wall of the sealing sleeve 435 is convexly provided with a sealing rib, which is pressed against the stepped surface of the stepped hole, so that the sealing performance between the annular end wall of the sealing sleeve 435 and the stepped surface of the stepped hole can be improved. It can be that the first annular circumferential wall is firstly sleeved with an interference seal at the stopper section 4322, and after the first annular circumferential wall and the stopper section 4322 are assembled, they are then inserted into the large hole section of the stepped hole by interference, and the stopper section 4322 presses the annular end wall on the stepped surface of the stepped hole, that is, the sealing rib is pressed against the stepped surface, and this scheme can better ensure the sealing between the anode body 432 of the second anode assembly 430 and the mounting part, and prevent water leakage between the anode body 432 and the mounting part. It can be that the first annular circumferential wall and the circumferential wall at the stopper section 4322 are matched through a conical surface structure, which is more conducive to the first annular circumferential wall being quickly sleeved at the stopper section 4322. The thickness of the annular end wall may be greater than that of the first annular circumferential wall, so that the annular end wall has higher strength and is less prone to deformation, and can better compact the sealing rib onto the step surface, resulting in a better sealing effect between the sealing rib and the step surface.

[0062] In some examples, such as Figure 2 , Figure 3 , Fig.12As shown, the second anode assembly 430 also includes: a separation sleeve 436 having an annular circumferential wall and a flange flange, and the sealing sleeve 435 also has a second annular circumferential wall. The annular circumferential wall of the separation sleeve 436 and the second annular circumferential wall of the sealing sleeve 435 are both located between the circumferential wall of the penetration section 4323 and the small hole section of the stepped hole. The adjacent ends of the annular circumferential wall of the separation sleeve 436 and the second annular circumferential wall of the sealing sleeve 435 can be sealed and abutted. The flange flange of the separation sleeve 436 is located outside the inner tank 100 and is pressed against the mounting member facing the inner tank. The flange flange of the separation sleeve 436 separates the mounting piece and the first locking washer 433 between the end surface of the outer side of the liner 100 and the first locking washer 433. At this time, the mounting piece can be set as a metal piece 413 of an integral structure. The metal piece 413 and the first locking washer 433 are separated and insulated from each other by the flange flange of the separation sleeve 436. The annular peripheral wall of the separation sleeve 436 separates the penetration section 4323 and the metal piece 413. The metal piece 413 is set to be screwed into the mounting hole of the inner liner 100. In this way, the mounting piece has a simple structure and is easy to install. Among them, the second annular peripheral wall of the sealing sleeve 435 and the small hole section of the stepped hole are also set to be sealed.

[0063] In some examples, such as Figure 2 , Figure 3 and Fig.15 As shown, the second anode assembly 430 further includes: a second locking washer 450, which is sleeved on the annular circumferential wall of the separation sleeve 436 and pressed between the flange flange of the separation sleeve 436 and the end surface of the mounting member facing the outside of the inner tank, and the second locking washer 450 is electrically connected to the inner tank 100 through the mounting member, and the third wiring portion 411 is located on the second locking washer 450. The second locking washer 450 is sleeved on the annular circumferential wall of the separation sleeve 436 and pressed between the flange flange of the separation sleeve 436 and the mounting member, so that the second sealing washer is insulated from the anode body 432 of the second anode assembly 430. At this time, the mounting member can be set as a metal member 413 of an integral structure, and the second locking washer 450 is electrically connected to the inner tank 100 through the metal member 413. Among them, the second locking washer 450 is provided with a plug-in terminal, and the third wiring portion 411 includes the plug-in terminal of the second locking washer 450. The separation sleeve 436 is configured as a silicone sleeve or a rubber sleeve made of insulating material.

[0064] Alternatively, only the second locking washer 450 of the second anode assembly 430 is provided, and the second locking washer 440 of the first anode assembly 420 is not provided; or only the second locking washer 440 of the first anode assembly 420 is provided, and the second locking washer 450 of the second anode assembly 430 is not provided, and so on; all of the above can 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 should all fall within the protection scope of the present application.

[0065] In some other exemplary embodiments, Figure 4 , Figure 5 , Fig.17 and Fig.18 As shown, the mounting part includes an insulating part 412 and an annular metal part 413. The insulating part 412 is fixed in the metal part 413 and is sealed and connected to the metal part 413 as a whole. A stop structure is provided at the matching position of the insulating part 412 and the metal part 413. The stop structure prevents the insulating part 412 and the metal part 413 from rotating relative to each other. The two through holes 414 are both located in the insulating part 412. The metal part 413 is configured to be sealed and screwed on the inner tank 100 of the water heater and electrically connected to the inner tank 100.

[0066] In some examples, such as Figure 4 , Figure 5 and Figure 7 As shown, the first anode assembly 420 includes: an anode body 422, the anode body 422 includes an insertion section 4221, a stop section 4222 and a penetration section 4223 which are sequentially arranged, the insertion section 4221 is inserted into the inner tank 100, the penetration hole 414 (for installing the first anode assembly 420) is a stepped hole, the large hole section of the stepped hole faces the interior of the inner tank 100, the stop section 4222 is arranged in the large hole section of the stepped hole and is sealed with the hole wall of the stepped hole, the penetration section 4223 is arranged in the small hole section of the stepped hole and extends to the side of the mounting member that is away from the insertion section 4221, that is, the penetration section 4223 is formed from the stepped hole to the side of the mounting member that is away from the insertion section 4221. The small hole section of the ladder hole extends to the outside of the inner liner 100; the first locking washer 423 and the locking member 424, the first locking washer 423 and the locking member 424 are both located on the side of the mounting member that is away from the extending section 4221, the locking member 424 is installed on the penetration section 4223, the first locking washer 423 is pressed between the locking member 424 and the insulating member 412, the insulating member 412 separates the first locking washer 423 and the metal member 413, the third wiring portion 411 is located on the metal member 413, the penetration section 4223 is electrically connected to the first locking washer 423, and the first wiring portion 421 is located on the first locking washer 423. A gasket 500 is provided between the first locking washer 423 and the locking member 424.

[0067] Among them, a plug-in terminal is provided at the edge of the first locking washer 423, and the first wiring portion 421 is a plug-in terminal of the first locking washer 423. The penetration section 4223 is provided with an external thread, and the locking member 424 is a locking nut, which is screwed onto the external thread of the penetration section 4223. The inner ring of the first locking washer 423 is provided with (multiple) locking teeth arranged at intervals along the circumferential direction, the first locking washer 423 is sleeved on the penetration section 4223 and pressed between the locking member 424 and the mounting member, the first locking washer 423 is insulated from the third wiring portion 411, and the locking teeth of the first locking washer 423 abut against the penetration section 4223 to ensure that the first locking washer 423 is electrically connected to the penetration section 4223. The anode body 422 of the first anode assembly 420 includes a physical anode, which can be a magnesium rod, and the magnesium rod at least partially extends into the inner tank 100.

[0068] In some examples, such as Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the first anode assembly 420 further includes: a sealing sleeve 425 having a first annular peripheral wall and an annular end wall. The first annular peripheral wall of the sealing sleeve 425 is located between the peripheral wall of the stopper section 4222 and the large hole section of the stepped hole, and is used to seal the gap between the peripheral wall of the stopper section 4222 and the large hole section of the stepped hole. The annular end wall of the sealing sleeve 425 is located between the stopper surface of the stopper section 4222 and the step surface of the stepped hole, and is used to seal the gap between the stopper surface of the stopper section 4222 and the step surface of the stepped hole.

[0069] Among them, Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the annular end wall of the sealing sleeve 425 is convexly provided with a sealing rib, which is pressed against the stepped surface of the stepped hole, so that the sealing performance between the annular end wall of the sealing sleeve 425 and the stepped surface of the stepped hole can be improved. It can be that the first annular peripheral wall is firstly sleeved with an interference seal at the stopper section 4222, and after the first annular peripheral wall and the stopper section 4222 are assembled, they are inserted into the large hole section of the stepped hole by interference, and the stopper section 4222 presses the annular end wall on the stepped surface of the stepped hole, that is, the sealing rib is pressed against the stepped surface, and this scheme can better ensure the sealing between the anode body 422 of the first anode assembly 420 and the mounting part, and prevent water leakage between the anode body 422 and the mounting part. It can be that the first annular peripheral wall and the peripheral wall at the stopper section 4222 are matched through a conical surface structure, which is more conducive to the first annular peripheral wall being quickly sleeved at the stopper section 4222. The thickness of the annular end wall may be greater than that of the first annular circumferential wall, so that the annular end wall has higher strength and is less prone to deformation, and can better compact the sealing rib onto the step surface of the step hole, resulting in a better sealing effect between the sealing rib and the step surface of the step hole.

[0070] In some examples, such as Figure 4 , Figure 5 and Figure 6 As shown, the second anode assembly 430 includes: an anode body 432, the anode body 432 includes an insertion section 4321, a stop section 4322 and a penetration section 4323 arranged in sequence, the insertion section 4321 is arranged to extend into the inner tank 100, the penetration hole 414 (for installing the second anode assembly 430) is a stepped hole, the large hole section of the stepped hole faces the inside of the inner tank 100, the stop section 4322 is arranged in the large hole section of the stepped hole and is sealed with the hole wall of the stepped hole, the penetration section 4323 is arranged in the small hole section of the stepped hole and extends to the insertion section 432 facing the mounting member. 1; the first locking washer 433 and the locking member 434, both of which are located on the side of the mounting member facing away from the extending section 4321, the locking member 434 is installed on the penetration section 4323, the first locking washer 433 is pressed between the locking member 434 and the insulating member 412, the insulating member 412 separates the first locking washer 433 and the metal member 413, the third wiring portion 411 is located on the metal member 413, the penetration section 4323 is electrically connected to the first locking washer 433, and the first wiring portion 421 is located on the first locking washer 433. A gasket 500 is provided between the first locking washer 433 and the locking member 434.

[0071] The first locking washer 433 is provided with a plug-in terminal at the edge thereof, and the second wiring portion 431 is a plug-in terminal of the first locking washer 433. The penetration section 4323 is provided with an external thread, and the locking member 434 is a locking nut, which is screwed onto the external thread of the penetration section 4323. The inner ring of the first locking washer 433 is provided with (multiple) locking teeth arranged at intervals along the circumferential direction, the first locking washer 433 is sleeved on the penetration section 4323 and pressed between the locking member 434 and the mounting member, the first locking washer 433 is insulated from the third wiring portion 411, and the locking teeth of the first locking washer 433 abut against the penetration section 4323, ensuring that the first locking washer 433 is electrically connected to the penetration section 4323. The anode body 432 of the second anode assembly 430 includes an electronic anode, and the electronic anode at least partially extends into the interior of the inner tank 100.

[0072] In some examples, such as Figure 4 , Figure 5 , Fig.10 and Fig.11As shown, the second anode assembly 430 further includes: a sealing sleeve 435 having a first annular peripheral wall and an annular end wall. The first annular peripheral wall of the sealing sleeve 435 is located between the peripheral wall of the stopper section 4322 and the large hole section of the stepped hole, and is used to seal the gap between the peripheral wall of the stopper section 4322 and the large hole section of the stepped hole. The annular end wall of the sealing sleeve 435 is located between the stopper surface of the stopper section 4322 and the step surface of the stepped hole, and is used to seal the gap between the stopper surface of the stopper section 4322 and the step surface of the stepped hole.

[0073] Among them, Figure 4 , Figure 5 , Fig.10 and Fig.11 As shown, the annular end wall of the sealing sleeve 435 is convexly provided with a sealing rib, which is pressed against the stepped surface of the stepped hole, so that the sealing performance between the annular end wall of the sealing sleeve 435 and the stepped surface of the stepped hole can be improved. It can be that the first annular circumferential wall is firstly sleeved with an interference seal at the stopper section 4322, and after the first annular circumferential wall and the stopper section 4322 are assembled, they are then inserted into the large hole section of the stepped hole by interference, and the stopper section 4322 presses the annular end wall on the stepped surface of the stepped hole, that is, the sealing rib is pressed against the stepped surface, and this scheme can better ensure the sealing between the anode body 432 of the second anode assembly 430 and the mounting part, and prevent water leakage between the anode body 432 and the mounting part. It can be that the first annular circumferential wall and the circumferential wall at the stopper section 4322 are matched through a conical surface structure, which is more conducive to the first annular circumferential wall being quickly sleeved at the stopper section 4322. The thickness of the annular end wall may be greater than that of the first annular circumferential wall, so that the annular end wall has higher strength and is less prone to deformation, and can better compact the sealing rib onto the step surface, resulting in a better sealing effect between the sealing rib and the step surface.

[0074] In some examples, such as Figure 5 , Fig.17 and Fig.18 As shown, the metal part 413 is provided with a terminal stud, and the insulating part 412 is provided with a flange flange 4121. The flange flange 4121 of the insulating part 412 is located on the side of the metal part 413 facing the outside of the inner tank 100, and the terminal stud is passed through the flange flange 4121 of the insulating part 412, and the third wiring part 411 is the terminal stud.

[0075] To sum up, in the anti-corrosion device provided in the embodiment of the utility model, the first anode assembly and the second anode assembly are sealed and installed in two holes of the mounting member in a one-to-one correspondence, so that the inner tank of the water heater only needs to have one mounting hole for installing the anti-corrosion device, and the anti-corrosion device is installed on the inner tank by installing the mounting member in the mounting hole. Compared with having two mounting holes in the inner tank to respectively install the first anode assembly and the second anode assembly, this scheme has a simpler structure of the inner tank, and is more convenient to install and after-sales maintain, and the probability of corrosion and leakage of the inner tank at the mounting hole is also smaller; moreover, two anode assemblies are used to prevent corrosion of the inner tank, and the inner tank is less likely to corrode and leak.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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 mounting piece is provided with two penetration holes; The first anode assembly and the second anode assembly are sealed and penetrated in the two penetration holes in a one-to-one correspondence, and the first anode assembly and the second anode assembly are insulated from each other; 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: Any one of the first anode assembly and the second anode assembly comprises: The anode body comprises an insertion section, a stop section and a penetration section which are sequentially arranged, wherein the insertion section is arranged to be inserted into the inner container, the penetration hole is a stepped hole, the stop section is arranged at the large hole section of the stepped hole, the penetration section is arranged at the small hole section of the stepped hole, and extends to a side of the mounting member which is away from the insertion section; The first locking washer and the locking piece are located on the side of the mounting piece facing away from the extending section. The locking piece is installed on the penetration section. The first locking washer is pressed between the locking piece and the mounting piece 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.

4. The anti-corrosion device according to claim 3, characterized in that: Any one of the first anode assembly and the second anode assembly further includes: A sealing sleeve having a first annular circumferential wall and an annular end wall, wherein the first annular circumferential wall of the sealing sleeve is located between the circumferential wall of the stop section and the large hole section of the stepped hole, and the annular end wall of the sealing sleeve is located between the stop surface of the stop section and the step surface of the stepped hole.

5. The anti-corrosion device according to claim 4, characterized in that: Any one of the first anode assembly and the second anode assembly further includes: A separation sleeve having an annular circumferential wall and a flange flange, the sealing sleeve also having a second annular circumferential wall, the annular circumferential wall of the separation sleeve and the second annular circumferential wall of the sealing sleeve are both located between the circumferential wall of the penetration section and the small hole section of the stepped hole, and are sealed and abutted, the flange flange of the separation sleeve separates the mounting piece and the first locking washer.

6. The anti-corrosion device according to claim 5, characterized in that: Also includes: The second locking washer is sleeved on the annular circumferential wall of the separation sleeve and is pressed between the flange flange of the separation sleeve and the mounting member. The second locking washer is electrically connected to the inner tank through the mounting member, and the third wiring portion is located on the second locking washer.

7. The anti-corrosion device according to claim 2, characterized in that: The mounting piece is a metal piece.

8. The anti-corrosion device according to claim 2, characterized in that: The mounting member comprises an insulating member and an annular metal member, the insulating member is fixedly arranged in the metal member, the two penetration holes are both located in the insulating member, and the metal member is configured to be sealed and screwed onto the inner tank of the water heater.

9. The anti-corrosion device according to claim 7 or 8, characterized in that: The metal part is provided with a terminal stud, and the third terminal portion is the terminal stud.

10. 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.

11. A water heater, characterized in that: It comprises an inner tank, a control device, a switch component and an anti-corrosion device as described in any one of claims 1 to 10, the inner tank is provided with a mounting hole, the mounting component is sealingly mounted in 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.

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