Conductive assembly for electric water heater

Abstract

The application discloses a conduction assembly for an electric water heater, which comprises a control casing and a conduction piece. A water passage is formed in the control casing, and a conduction hole is formed in the water passage in a radial direction. The conduction piece is sealingly inserted into the conduction hole. The conduction piece is at least partially located in the water passage. Limiting grooves are formed in the conduction piece and the control casing in a radial direction of the conduction piece. Limiting pieces are arranged in the limiting grooves. The application has the effects of optimizing the accuracy of the assembly position of the conduction piece and improving the assembly efficiency of the conduction piece.

Description

Technical Field

[0001] This application relates to the field of electric water heater technology, and in particular to a conductive component for an electric water heater. Background Technology

[0002] In existing technologies, electric water heaters typically use threaded connections, bolted connections, or welding when installing conductive components. However, these connection methods have certain drawbacks.

[0003] First, let's look at threaded connections. With threaded connections, it's difficult to guarantee the specific installation angle of the conductive components. This makes it impossible to use threaded assemblies for components with strict installation angle requirements. Furthermore, during long-term use of an electric water heater, mechanical vibration can cause threaded connections to gradually loosen, affecting the water heater's lifespan. Next, let's consider bolted connections. While bolted connections can guarantee the installation angle to some extent, they require more installation steps, making the installation process more time-consuming. Moreover, under long-term mechanical vibration, bolted connections will also gradually loosen, impacting the water heater's lifespan. Finally, regarding welding, although welding can meet the assembly requirements of conductive components with specific installation angle requirements, the welding operation is time-consuming during installation, thus leaving room for further improvement. Utility Model Content

[0004] This application proposes a conductive component for an electric water heater, which aims to optimize the accuracy of the assembly position of the conductive component and improve the assembly efficiency of the conductive component.

[0005] Specifically, this conductive assembly has the following advantages. First, by inserting the conductive component into the conductive through-hole, not only is a convenient fit between the component and the through-hole achieved, but the accuracy of the fitting angle is also ensured. Second, the use of a limiting piece to radially limit the fit between the conductive component and the through-hole ensures the stability of their fit and further guarantees the precision of the assembly position. Furthermore, both the insertion operation of the conductive component into the through-hole and the insertion process of the limiting piece into the limiting groove are relatively simple. These features effectively improve the assembly efficiency of the conductive component.

[0006] The conductive component for an electric water heater provided in this application adopts the following technical solution:

[0007] A conductive assembly for an electric water heater is disclosed. The electric water heater includes a control housing. The conductive assembly includes a conductive member and a limiting plate. The control housing has a water passage hole, and a conductive through hole is formed radially from the water passage hole. The conductive member is sealed and inserted into the conductive through hole. The conductive member is at least partially located within the water passage hole. The conductive member and the control housing have a limiting groove formed along the radial direction of the conductive member. The limiting plate cooperates with the limiting groove.

[0008] By adopting the above technical solution, when assembling the conductive component and control housing, the user only needs to insert the conductive component into the pre-drilled conductive through hole to install the conductive component into the water passage hole. By radially inserting the limiting plate into the limiting groove, the position of the conductive component at the conductive through hole is limited, making the connection between the conductive component and the conductive through hole more convenient. When water flows into the water passage hole, the user can easily obtain the water flow data in the water passage hole through the conductive component. The insertion method of installing the conductive component not only facilitates the connection between the conductive component and the conductive through hole, but also ensures the installation angle of the conductive component. This allows the conductive component to be installed in the conductive through hole at a precise preset installation angle. Furthermore, the limiting plate and limiting groove prevent the conductive component from shifting within the conductive through hole, thereby ensuring the connection effect between the conductive component and the conductive through hole and improving the assembly effect of the conductive component and the conductive through hole.

[0009] Preferably, the limiting groove includes a first limiting groove and a second limiting groove. The first limiting groove is formed on the control housing, and the second limiting groove is formed on the conductive member. The limiting piece has an opening, and the width of the opening is greater than or equal to the outer diameter of the conductive member at the second limiting groove.

[0010] By adopting the above technical solution, after the conductive component and the control housing are sealed and plugged in, the user will fit the opening of the limiting piece onto the second limiting groove of the conductive component. When the opening of the limiting piece is fitted onto the second limiting groove, the limiting piece is exactly located in the limiting groove. The limiting piece radially limits the conductive component and the control housing, thereby restricting the axial displacement of the conductive component. This prevents the conductive component from displacing within the conductive through hole, thus ensuring the connection effect between the conductive component and the conductive through hole, improving the assembly effect between the conductive component and the conductive through hole, and ensuring the accuracy of the assembly position of the conductive component.

[0011] Preferably, the conductive through hole includes a first stepped portion and a second stepped portion in sequence, the inner diameter of the first stepped portion being smaller than the inner diameter of the second stepped portion; the conductive member includes a conductive portion, a sealing portion and a limiting portion in sequence, the conductive portion being located inside the water passage hole, the sealing portion cooperating with the conductive through hole, and the second limiting groove being formed on the limiting portion.

[0012] By adopting the above technical solution, the conductive through hole is a stepped hole, and the sealing part of the conductive component is sealed with the conductive through hole. Through the stepped fit, the conductive component and the conductive through hole form two or more levels of sealing contact surfaces, making the water leakage path more tortuous and effectively extending the fluid penetration path. At the same time, the conductive component and the conductive through hole are interference-fitted, causing slight elastic or plastic deformation at the edge of the step, which can fill the micro gaps between the two and form a good seal. In addition, the limiting part can also position the installation depth of the conductive component, making it convenient for users to determine whether the conductive component is installed in place by observing the limiting part.

[0013] Preferably, the sealing part has a conductive sealing groove, and a conductive sealing element is provided in the conductive sealing groove.

[0014] By adopting the above technical solution, the user inserts the conductive component into the conductive through hole, so that the conductive component and the conductive through hole are sealed together through the conductive seal and the conductive sealing groove. The stepped conductive through hole and the sealing part of the conductive component only make contact and seal without any deformation. This makes it easy to disassemble the conductive component and the conductive through hole, which is convenient for maintenance or replacement. The conductive component and the conductive through hole extend the fluid permeation path through the multi-level contact surface, effectively working with the conductive seal to improve the sealing effect.

[0015] Preferably, the control housing has an insertion interface at one end of the conductive through hole, and the outer wall of the limiting part has symmetrically formed limiting surfaces. The limiting surfaces cooperate with the inner wall of the insertion interface and abut against each other to restrict the rotation of the conductive member relative to the control housing.

[0016] By adopting the above technical solution, after the conductive component is inserted into the conductive through hole, the limiting part of the conductive component is located exactly inside the insertion interface. The limiting surface of the conductive component cooperates with the inner wall of the insertion interface, so that the conductive component cannot rotate within the insertion interface. This allows the insertion interface to not only locate the degree of insertion of the conductive component to determine whether the conductive component is installed in place, but also to limit the rotation of the conductive component through the cooperation between its own inner wall and the limiting surface at the end of the conductive component. This ensures that the angle of the conductive component will not change during use, further increasing the accuracy of the assembly position of the conductive component and also helping to extend the effective service life of the conductive component.

[0017] Preferably, the conductive part has a first hole along the axial direction of the water passage hole, and the conductive part has a second hole along the radial direction of the water passage hole.

[0018] By adopting the above technical solution, water flows through the water passage, and the conductive element is radially arranged inside the water passage to measure relevant information such as water flow velocity, temperature, and resistance. Through the setting of the first and second holes, the water flowing axially along the water passage can not only bypass the conductive element to continue axial flow, but also pass through the first hole of the conductive element to continue axial flow. This reduces the phenomenon of eddies caused by the conductive element blocking the water flow in the water passage, thereby ensuring the stability and uniformity of water pressure in the water passage, ensuring the accuracy of the measurement data of the conductive element, and also increasing the effective flow rate of water and reducing the blockage of the water passage. At the same time, the water eddies generated by the obstruction of the conductive element can not only bypass the conductive element to continue axial flow, but also reduce the time of flow around the conductive element and shorten the flow path through the second hole, so as to restore the axial flow as soon as possible.

[0019] Preferably, the conductive element has an axially formed connecting hole at the end away from the water passage.

[0020] By adopting the above technical solution, the conductive component is connected to the circuit with screws through the connecting hole. By setting the circuit connection position at the end, it will not affect the user's insertion of the conductive component. On the other hand, after the conductive component is inserted, the end of the conductive component is a free end. Setting the circuit at the end of the conductive component can facilitate the routing of the circuit without the need for the circuit to be twisted.

[0021] Preferably, the control housing has a cylindrical portion on the wall of the water inlet, and the conductive through hole is formed in the cylindrical portion.

[0022] By adopting the above technical solution, when opening conduction through holes in the wall of the water passage, sometimes the wall of the water passage is too thin, which limits the strength of the conduction through hole and thus limits the assembly strength of the conduction component. By setting a cylindrical part in the pipe wall, it is beneficial to strengthen the strength of the water passage at the conduction through hole, thereby extending the service life of the conduction component.

[0023] Preferably, the conductive element is an electrode, and two conductive elements are spaced apart at the two conductive through holes. The electrodes are electrically connected to a power source, and the power source is connected in series with a sampling resistor.

[0024] By adopting the above technical solution, the conductive element can participate in the measurement of water conductivity. Typically, the component used to measure the conductivity of water flow includes two electrodes, a power supply with a specific output waveform, and a sampling resistor. In specific implementation, the conductive element acts as the electrode. First, the two conductive elements acting as electrodes are inserted into the conductive through-holes on the peripheral wall of the water passage, and the two conductive elements are spaced apart along the axial direction of the water passage, with both conductive elements in contact with the water flow. Second, the power supply is applied to the two electrodes. Finally, the sampling resistor is connected in series in the circuit. The resistance of the water can then be calculated by measuring the voltage waveform across the sampling resistor. By measuring the resistance of the water at the interval between the two conductive elements, the ionic conductivity of the water flow in the water passage can be calculated, thus indirectly reflecting the conductivity of the water flow. If the resistance is too low, it indicates that the conductivity of the water flow is high, and the water flow will participate in conduction, forming a leakage path and increasing the risk of electric shock. In this case, the electric water heater will activate protection measures and automatically stop heating. Conversely, the electric water heater can continue to work and heat the water.

[0025] Preferably, the conductive element is a grounding conductor, the control housing is provided with a PCB board, the PCB board is provided with a grounding terminal, the grounding conductor is electrically connected to the grounding terminal, and a valve core is provided in the middle of the water passage hole, and the grounding conductor is located at the upper part of the water passage hole.

[0026] By adopting the above technical solution, water enters from the lower part of the water inlet and flows upward after passing through the valve core. The grounding conductor is set at the upper part of the water inlet. This not only prevents the electricity of the heating component above the water inlet from being conducted to the valve core, so that the user will be shocked when adjusting the water flow switch at the valve core, but also conducts the electricity away through the grounding conductor by being electrically connected to the grounding terminal. It can also release the electricity brought by the water flow from bottom to top through the grounding conductor, preventing the electrified water flow from affecting the operation of the heating component, or even the electrified water flow out after being heated, thus harming the user.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When assembling the conductive component and control housing, the user only needs to insert the conductive component into the pre-drilled conductive through hole to install it in the water passage hole. By radially inserting the limiting piece into the limiting groove, the position of the conductive component in the conductive through hole is limited, making the connection between the conductive component and the conductive through hole more convenient. When water flows into the water passage hole, the user can easily obtain the water flow data in the water passage hole through the conductive component. The insertion method of installing the conductive component not only facilitates the connection between the conductive component and the conductive through hole, but also ensures the installation angle of the conductive component. This allows the conductive component to be installed in the conductive through hole at a precise preset installation angle. Furthermore, the limiting piece and the limiting groove prevent the conductive component from shifting within the conductive through hole, thereby ensuring the connection effect between the conductive component and the conductive through hole and improving the assembly effect of the conductive component and the conductive through hole.

[0029] 2. After the conductive component and the control housing are sealed and plugged in, the user places the opening of the limiting piece onto the second limiting groove of the conductive component. When the opening of the limiting piece is placed onto the second limiting groove, the limiting piece is exactly located in the limiting groove. The limiting piece radially limits the conductive component and the control housing, thereby restricting the axial displacement of the conductive component. This prevents the conductive component from shifting within the conductive through hole, ensuring the connection effect between the conductive component and the conductive through hole, improving the assembly effect between the conductive component and the conductive through hole, and ensuring the accuracy of the assembly position of the conductive component.

[0030] 3. After the conductive component is inserted into the conductive through hole, the limiting part of the conductive component is located exactly inside the insertion interface. The limiting surface of the conductive component cooperates with the inner wall of the insertion interface, preventing the conductive component from rotating within the insertion interface. This allows the insertion interface to not only determine the degree of insertion of the conductive component to confirm whether the conductive component is installed correctly, but also to limit the rotation of the conductive component through the cooperation between its own inner wall and the limiting surface at the end of the conductive component. This ensures that the angle of the conductive component will not change during use, further increasing the accuracy of the conductive component's assembly position and helping to extend the effective service life of the conductive component. Attached Figure Description

[0031] Figure 1This is a schematic diagram of the conductive component in this embodiment;

[0032] Figure 2 This is a top view of the conductive component in this embodiment;

[0033] Figure 3 for Figure 2 Along the sectional view shown in AA;

[0034] Figure 4 This is a schematic diagram of the control housing structure in this embodiment;

[0035] Figure 5 This is a top view of the control housing in this embodiment;

[0036] Figure 6 for Figure 5 Along the sectional view shown in BB;

[0037] Figure 7 This is a schematic diagram of the conductive element in this embodiment;

[0038] Figure 8 This is a schematic diagram of the connection structure between the conductive element, the circuit, and the limiting piece in this embodiment;

[0039] Figure 9 This is a schematic diagram of the conductive component in this embodiment.

[0040] Reference numerals: 1. Control housing; 11. Water passage; 12. Conductive through hole; 121. First step; 122. Second step; 13. "C"-shaped protrusion; 14. Insertion interface; 15. Cylindrical part; 2. Conductive component; 21. Conductive part; 22. Sealing part; 23. Limiting part; 24. Conductive sealing groove; 25. Limiting surface; 26. First hole; 27. Second hole; 28. Connecting hole; 3. Conductive sealing component; 4. Limiting plate; 41. Opening; 5. Electrode; 6. Grounding conductor; 7. Wire terminal; 8. Grounding terminal; 9. Limiting groove; 91. First limiting groove; 92. Second limiting groove. Detailed Implementation

[0041] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0042] This application discloses a conductive component for an electric water heater.

[0043] Reference Figures 1-9 The electric water heater includes a control housing 1, and the electric water heater conductive assembly includes a conductive element 2 and a limiting piece 4. A water passage hole 11 is provided on the control housing 1, and a conductive through hole 12 is provided radially on the peripheral wall of the water passage hole 11. The conductive element 2 is sealed and inserted into the conductive through hole 12, so that part of the conductive element 2 is located inside the water passage hole 11.

[0044] Limiting grooves 9 are formed on the conductive member 2 and the control housing 1. The limiting grooves 9 include a first limiting groove 91 and a second limiting groove 92. The first limiting groove 91 is formed at a radial position of the conductive member 2, and the second limiting groove 92 is formed on the control housing 1 at a position corresponding to the first limiting groove 91. The limiting piece 4 is located in the limiting groove 9 and has an opening 41. The width of the opening 41 is greater than or equal to the outer diameter of the conductive member 2 at the second limiting groove 92.

[0045] When assembling the conductive component 2 and the control housing 1, the user inserts the conductive component 2 into the pre-drilled conductive through hole 12, thus installing the conductive component 2 inside the water passage hole 11. The user then fits the opening 41 of the limiting piece 4 into the second limiting groove 92 of the conductive component 2. When the opening 41 of the limiting piece 4 is fitted into the second limiting groove 92, the limiting piece 4 is precisely positioned within the limiting groove 9. This allows the user to easily obtain water flow data within the water passage hole 11 through the conductive component 2 when water flows into it. Installing the conductive component 2 via the insertion method not only facilitates the connection between the conductive component 2 and the conductive through hole 12 but also ensures the correct installation angle. The conductive component 2 can be installed within the conductive through hole 12 at a precise preset angle. Furthermore, the limiting piece 4 and the limiting groove 9 prevent displacement of the conductive component 2 within the conductive through hole 12, thereby ensuring the effective connection between the conductive component 2 and the conductive through hole 12 and improving the assembly effect of the conductive component 2 and the conductive through hole 12.

[0046] Furthermore, in this embodiment, the conductive through-hole 12 is a stepped hole, comprising a first stepped portion 121 and a second stepped portion 122. One end of the first stepped portion 121 communicates with the water passage 11, and the other end communicates with one end of the second stepped portion 122. The inner diameter of the first stepped portion 121 is smaller than the inner diameter of the second stepped portion 122. The conductive member 2 sequentially comprises a conductive portion 21, a sealing portion 22, and a limiting portion 23. The sealing portion 22 cooperates with the conductive through-hole 12, the conductive portion 21 is located inside the water passage 11, and the outer diameter of the limiting portion 23 is larger than the outer diameter of the second stepped portion 122, so that... The sealing part 22 of the conductive element 2 is sealed and fitted with the conductive through hole 12. Through the stepped fit, the conductive element 2 and the conductive through hole 12 form two or more levels of sealing contact surfaces, making the water leakage path more tortuous and effectively extending the fluid penetration path. At the same time, the interference fit between the conductive element 2 and the conductive through hole 12 causes slight elastic or plastic deformation at the edge of the step, which can fill the micro gaps between the two and form a good seal. In addition, the limiting part 23 can also position the installation depth of the conductive element 2, making it convenient for the user to determine whether the conductive element 2 is installed in place by observing the limiting part 23.

[0047] Furthermore, in this embodiment, a conductive sealing groove 24 is provided on the sealing part 22, and a conductive sealing element 3 is sleeved in the conductive sealing groove 24. The user inserts the conductive element 2 into the conductive through hole 12, so that the conductive element 2 and the conductive through hole 12 are sealed together through the conductive sealing element 3 and the conductive sealing groove 24. The stepped conductive through hole 12 and the sealing part 22 of the conductive element 2 only make contact sealing without any deformation, so that the connection between the conductive element 2 and the conductive through hole 12 can be easily disassembled, which facilitates maintenance or replacement. The conductive element 2 and the conductive through hole 12 extend the fluid permeation path through the multi-level contact surface, effectively cooperating with the conductive sealing element 3 to improve the sealing effect.

[0048] Furthermore, in this embodiment, the control housing 1 has an insertion interface 14 at one end of the conductive through hole 12, and the outer wall of the limiting part 23 has symmetrical limiting surfaces 25. The distance between the two limiting surfaces 25 is the minimum outer diameter of the limiting part 23 of the conductive member 2. This ensures that after the conductive member 2 is inserted into the conductive through hole 12, the limiting part 23 of the conductive member 2 is located exactly inside the insertion interface 14. The limiting surface 25 of the conductive member 2 cooperates with the inner wall of the insertion interface 14, preventing the conductive member 2 from rotating within the insertion interface 14. This allows the insertion interface 14 to not only locate the degree of insertion of the conductive member 2 to determine whether the conductive member 2 is installed correctly, but also to limit the rotation of the conductive member 2 through the cooperation between its inner wall and the limiting surface 25 at the end of the conductive member 2. This ensures that the angle of the conductive member 2 will not change during use, further increasing the accuracy of the assembly position of the conductive member 2 and also helping to extend the effective service life of the conductive member 2.

[0049] Furthermore, in this embodiment, the conductive part 21 of the conductive member 2 has a first hole 26 along the axial direction of the water passage 11, and the conductive part 21 of the conductive member 2 has a second hole 27 along the radial direction of the water passage 11, so that water flows through the water passage 11. The conductive member 2 is radially disposed in the water passage 11 to measure relevant information such as the flow rate, temperature, and resistance of the water flow. Through the arrangement of the first hole 26 and the second hole 27, the water flowing axially along the water passage 11 can not only bypass the conductive member 2 to continue axial flow, but also pass through the first hole of the conductive part 21. 26. Axial flow is achieved, reducing the phenomenon of eddies caused by the obstruction of water flow in the water passage 11 by the transmission part 21. This ensures the stability and uniformity of water pressure in the water passage 11, guarantees the accuracy of the measurement data of the transmission part 2, and can also increase the effective flow volume of water, reduce the blockage of the water passage 11. At the same time, the water eddies generated by the obstruction of the transmission part 21 can not only bypass the transmission part 2 and continue to flow axially, but also reduce the time of flow around the transmission part 2 and shorten the flow path through the second hole 27, so as to restore the axial flow as soon as possible.

[0050] Furthermore, in this embodiment, the control housing 1 has an integrally formed cylindrical portion 15 on the pipe wall of the water passage 11. The cylindrical portion 15 is arranged perpendicularly to the pipe wall of the water passage 11, and the conduction through hole 12 is opened on the cylindrical portion 15 and the pipe wall of the water passage 11 corresponding to the cylindrical portion 15. By setting the cylindrical portion 15 on the pipe wall, it is not only beneficial to specifically strengthen the strength of the peripheral wall of the conduction through hole 12, but also to reduce the thickness of the entire pipe wall of the water passage 11. Material is saved by using the dedicated cylindrical portion 15, thereby extending the service life of the conduction component.

[0051] Furthermore, in this embodiment, the control housing 1 has an integrally formed "C"-shaped protrusion 13 on the outer wall of the water passage 11. The "C"-shaped protrusion 13 is located at the end of the cylindrical portion 15 away from the water passage 11. The first limiting groove 91 is opened in the middle of the "C"-shaped protrusion 13. The limiting piece 4 is inserted into the first limiting groove 91 and the second limiting groove 92. The limiting piece 4 limits the relative position of the conductive member 2 and the conductive through hole 12, so that the conductive member 2 will not be displaced in the conductive through hole 12, thereby improving the assembly effect of the conductive member 2 and the conductive through hole 12.

[0052] Furthermore, in this embodiment, the end of the conductive member 2 away from the water passage hole 11 is provided with a connecting hole 28 axially. A wire terminal 7 and a washer for connecting with the line are placed in sequence at the connecting hole 28. The screw passes through the washer and the wire terminal 7 in sequence and is threadedly connected to the connecting hole 28 of the conductive member 2, so that the conductive member 2 is connected to the line through the end. By setting the line connection position at the end, on the one hand, it will not affect the user's insertion of the conductive member 2. On the other hand, after the conductive member 2 is inserted, the end of the conductive member 2 is a free end. Setting the line at the end facilitates the routing of the line and does not require the line to be twisted.

[0053] Furthermore, in this embodiment, the conductive element 2 can participate in measuring the conductivity of water. Typically, the components used to measure the conductivity of water flow include two electrodes 5, a power supply with a specific output waveform, and a sampling resistor. In specific implementation, the conductive element 2 is made to act as the electrodes 5. First, the two conductive elements 2 acting as electrodes 5 are inserted into the conductive through-hole 12 on the peripheral wall of the water passage 11, and the two conductive elements 2 are arranged at intervals along the axial direction of the water passage 11. Both conductive elements 2 are in contact with the water flow. Second, the power supply is applied to the two electrodes 5. Finally, the sampling resistor is connected in series in the circuit. Then, the resistance of the water can be calculated by measuring the voltage waveform on the sampling resistor.

[0054] The ionic conductivity of the water flow in the water passage 11 is calculated by measuring the resistance of the water at the interval between the two conductive parts 2, which indirectly reflects the conductivity of the water flow. If the resistance is too low, it means that the conductivity of the water flow is high, and the water flow will participate in the conduction, forming a leakage path and increasing the risk of electric shock. At this time, the electric water heater will activate the protection measures and automatically stop heating. Otherwise, the electric water heater can continue to work and heat.

[0055] Furthermore, in this embodiment, the conductive element 2 is a grounding conductor 6, which is located above the water passage hole 11. A PCB board is placed inside the control housing 1, and a grounding terminal 8 is electrically connected to the PCB board. The grounding conductor 6 is electrically connected to the grounding terminal 8. A valve core is provided in the middle of the water passage hole 11. Water enters from the lower part of the water passage hole 11 and flows upward after passing through the valve core. By placing the grounding conductor 6 above the water passage hole 11, it can not only prevent the electricity of the heating component above the water passage hole 11 from being conducted to the valve core, thus preventing the user from getting an electric shock when adjusting the water flow switch at the valve core, but also release the electricity brought by the water flow from bottom to top through the grounding conductor 6, preventing the electrified water flow from affecting the operation of the heating component, or even causing the electrified water flow to flow out after heating and harming the user.

[0056] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A conductive component for an electric water heater, characterized in that: The electric water heater includes a control housing (1) and a conductive assembly including a conductive element (2) and a limiting piece (4). The control housing (1) has a water passage hole (11) and a conductive through hole (12) is formed radially from the water passage hole (11). The conductive element (2) is sealed and inserted into the conductive through hole (12). The conductive element (2) is at least partially located inside the water passage hole (11). The conductive element (2) and the control housing (1) have a limiting groove (9) formed along the radial direction of the conductive element (2). The limiting piece (4) cooperates with the limiting groove (9).

2. The conductive component for an electric water heater according to claim 1, characterized in that: The limiting groove (9) includes a first limiting groove (91) and a second limiting groove (92). The first limiting groove (91) is formed on the control housing (1), and the second limiting groove (92) is formed on the conductor (2). The limiting piece (4) has an opening (41), the width of which is greater than or equal to the outer diameter of the conductor (2) at the second limiting groove (92).

3. The conductive component for an electric water heater according to claim 2, characterized in that: The conductive through hole (12) includes a first step portion (121) and a second step portion (122) in sequence. The inner diameter of the first step portion (121) is smaller than the inner diameter of the second step portion (122). The conductive member (2) includes a conductive portion (21), a sealing portion (22) and a limiting portion (23) in sequence. The conductive portion (21) is located inside the water passage hole (11). The sealing portion (22) cooperates with the conductive through hole (12). The second limiting groove (92) is opened on the limiting portion (23).

4. The conductive component for an electric water heater according to claim 3, characterized in that: The sealing part (22) is provided with a conductive sealing groove (24), and a conductive sealing element (3) is provided in the conductive sealing groove (24).

5. The conductive component for an electric water heater according to claim 3, characterized in that: The control housing (1) has an insertion interface (14) at one end of the conductive through hole (12). The outer wall of the limiting part (23) is symmetrically provided with limiting surfaces (25). The limiting surfaces (25) cooperate with the inner wall of the insertion interface (14) and abut against each other to restrict the rotation of the conductive member relative to the control housing.

6. The conductive component for an electric water heater according to claim 3, characterized in that: The conductive part (21) has a first hole (26) along the axial direction of the water passage (11), and the conductive part (21) has a second hole (27) along the radial direction of the water passage (11).

7. The conductive component for an electric water heater according to claim 1, characterized in that: The conductive element (2) has an axially formed connection hole (28) at one end away from the water passage (11).

8. The conductive component for an electric water heater according to claim 1, characterized in that: The control housing (1) has a cylindrical part (15) on the pipe wall of the water inlet (11), and the conductive through hole (12) is opened at the cylindrical part (15).

9. The conductive component for an electric water heater according to claim 1, characterized in that: The conductive element (2) is an electrode (5). Two conductive elements (2) are spaced apart at two conductive through holes (12). The electrode (5) is electrically connected to a power source, and the power source is connected in series with a sampling resistor.

10. The conductive component for an electric water heater according to claim 1, characterized in that: The conductive element (2) is a grounding conductor (6). The control housing (1) is provided with a PCB board, and the PCB board is provided with a grounding terminal (8). The grounding conductor (6) is electrically connected to the grounding terminal (8), and the water passage hole (11) is provided with a valve core in the middle. The grounding conductor (6) is located at the upper part of the water passage hole (11).

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