Double-tank electric water heater

Abstract

The utility model relates to a kind of double-coil electric water heater, comprising: upper inner container, first electric heating tube is arranged in upper inner container;Lower inner container, second electric heating tube is arranged in lower inner container, lower inner container is set below upper inner container, lower inner container is communicated with upper inner container;Water inlet pipe, water inlet pipe is communicated with lower inner container, the water outlet of water inlet pipe is located inside lower inner container;Water outlet pipe, water outlet pipe is communicated with upper inner container, the water inlet of water outlet pipe is located inside upper inner container;Anticorrosion temperature measurement module, anticorrosion temperature measurement module includes installation support, first electronic anode and first temperature sensing tube, first electronic anode and first temperature sensing tube are respectively arranged on installation support, first temperature sensing tube is provided with first temperature sensor;Installation support is set on upper inner container, first electronic anode and first temperature sensing tube are inserted into the inside of upper inner container. Realize the modularization design of first electronic anode and first temperature sensing tube to improve the assembly efficiency of water heater.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and in particular relates to a dual-tank electric water heater. Background Technology

[0002] Currently, water heaters are common household appliances. Storage-type electric water heaters, equipped with a water tank, are increasingly popular due to their large water output and stable water temperature. Among them, water heaters with two inner tanks are widely used because of their large water storage capacity.

[0003] Electric water heaters with dual tanks typically have electric heating elements installed in each of the two inner tanks for heating. To prevent corrosion, each inner tank usually contains corrosion-resistant components, such as magnesium rods or electronic anodes. For example, Chinese patent CN208635324U discloses an electric water heater with a rapid heating function, employing a dual-tank structure and incorporating magnesium rods and electronic anodes in each inner tank. A temperature sensor is also installed to detect the water temperature within the tanks. Typically, to accommodate the temperature sensor installation, a temperature-sensing tube is installed on the upper flange of the inner tank, extending into the inner tank, and the temperature sensor is installed inside the temperature-sensing tube.

[0004] However, in actual use, the electronic anode and the temperature sensing tube need to be installed separately on the inner tank. This requires separate installation of the electronic anode and the temperature sensing tube on the assembly line, resulting in low overall assembly efficiency of the water heater. Therefore, how to design a technology to improve the assembly efficiency of a dual-tank electric water heater is the technical problem this invention aims to solve. Utility Model Content

[0005] The purpose of this utility model is to provide a dual-tank electric water heater that achieves a modular design of the first electronic anode and the first temperature sensing tube to improve the assembly efficiency of the water heater.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution: This utility model proposes a dual-tank electric water heater, comprising: The upper inner liner is provided with a first electric heating element. The lower inner liner is provided with a second electric heating tube. The lower inner liner is located below the upper inner liner and is connected to the upper inner liner. A water inlet pipe is connected to the lower inner tank, and the outlet of the water inlet pipe is located inside the lower inner tank. A water outlet pipe, which is connected to the upper inner tank, and the water inlet of the water outlet pipe is located inside the upper inner tank; The anti-corrosion temperature measurement module includes a mounting support, a first electronic anode and a first temperature sensing tube. The first electronic anode and the first temperature sensing tube are respectively disposed on the mounting support, and a first temperature sensor is disposed in the first temperature sensing tube. The mounting support is disposed on the upper inner liner, and the first electronic anode and the first temperature sensing tube extend into the interior of the upper inner liner.

[0007] In one embodiment of this application, a third electric heating tube is further provided in the upper inner tank, and the third electric heating tube extends to the inlet of the water outlet pipe; The first temperature sensing tube extends to the inlet of the water outlet pipe.

[0008] In one embodiment of this application, the electrode rod of the first electronic anode is arranged above the third electric heating tube.

[0009] In one embodiment of this application, an upper flange is provided at one end of the upper inner liner, and the first electric heating tube and the third electric heating tube are disposed on the upper flange; The upper flange is also provided with a second temperature sensing tube, and a second temperature sensor is provided in the second temperature sensing tube; the second temperature sensing tube is arranged below the first temperature sensing tube.

[0010] In one embodiment of this application, a lower flange is provided at one end of the lower inner liner, and the second electric heating tube is disposed on the lower flange; The lower flange is also provided with a third temperature sensing tube, in which a third temperature sensor is installed; and / or, the lower flange is also provided with a second electronic anode.

[0011] In one embodiment of this application, the mounting support is provided with a first mounting port and a second mounting port; The first electronic anode passes through the first mounting port, and the first temperature sensing tube passes through the second mounting port.

[0012] In one embodiment of this application, the first electronic anode is detachably and sealed in the first mounting port.

[0013] In one embodiment of this application, an annular groove is provided on the outer periphery of the first electronic anode, and a sealing ring is provided on the annular groove, the sealing ring being pressed against the inner wall of the first mounting port.

[0014] In one embodiment of this application, the mounting support is further provided with a sleeve, in which the first mounting port is formed, and the first electronic anode is sealed and inserted into the sleeve.

[0015] In one embodiment of this application, a locking groove is provided on the first electronic anode, and an insertion hole is provided on the tube wall of the sleeve, with a pin inserted into the insertion hole and locked in the locking groove.

[0016] Compared with existing technologies, the advantages and positive effects of this utility model are as follows: By adding an anti-corrosion temperature measuring module, which simultaneously meets the installation requirements of the first electronic anode and the first temperature sensing tube through a mounting support, the first electronic anode and the first temperature sensing tube are integrated onto the same mounting support, achieving a modular design for both. During assembly, there is no need to install the first electronic anode and the first temperature sensing tube separately; the entire module can be installed onto the upper inner tank simply through the mounting support, reducing assembly steps and operation time, and significantly improving the overall assembly efficiency of the dual-tank electric water heater.

[0017] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the dual-tank electric water heater of this utility model; Figure 2 This is a structural schematic diagram of an embodiment of the dual-tank electric water heater of this utility model; Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle; Figure 4 This is one of the structural schematic diagrams of the corrosion-resistant temperature measuring module of this utility model; Figure 5 This is the second structural schematic diagram of the corrosion-resistant temperature measuring module of this utility model; Figure 6 This is an exploded view of the corrosion-resistant temperature measuring module of this utility model; Figure 7 for Figure 6 A schematic diagram of the structure for installing the support components.

[0020] Figure label: 100. Corrosion-resistant temperature measurement module; 1. Mounting support; 11. Sleeve; 12. Insertion hole; 13. Pin; 14. Receiving groove; 15. First mounting port; 16. Second mounting port; 131. Locking pin; 132. Connecting rod; 2. First electronic anode; 21. Annular groove; 22. Sealing ring; 23. Locking groove; 3. First temperature sensing tube; 4. Inner liner; 41. First electric heating element; 42. Upper flange; 43. Mounting base; 44. Mounting channel; 45. Nut; 46. Third electric heating element; 47. Second temperature sensing element; 5. Lower inner liner; 51. Second electric heating element; 52. Lower flange; 53. Third temperature sensing element; 54. Second electronic anode; 6. Inlet pipe; 7. Outlet pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] An electric water heater is a type of water heater that uses electricity as its primary energy source. The high-temperature heat generated after the power is turned on directly heats the water stored in the water heater to produce hot water.

[0027] Electric water heaters typically consist of a water tank, an electric heating element, and an electronic control board. The water tank has a storage cavity to store water to be heated. The electric heating element is inserted into the storage cavity of the water tank. The electronic control board is used to control the electric heating element to operate by turning the power on and off, so that the water in the tank is heated to the set temperature.

[0028] For the water tank of an electric water heater, the tank generally consists of an outer shell and an inner tank, with an insulation layer between them. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse designs; the inner tank can be made of metal or plastic, depending on the needs.

[0029] In addition, the insulation layer formed between the outer shell and the inner liner is commonly made of materials such as asbestos, sponge, foam plastic, and polyurethane foam. In conventional technology, foaming is usually used to form the insulation layer in order to achieve good insulation effect.

[0030] The water tank is also equipped with an inlet pipe and an outlet pipe. The inlet pipe is used to deliver cold water into the water storage cavity formed inside the water tank, while the hot water in the water storage cavity is output from the outlet pipe.

[0031] For electric heating components, electric heating methods such as electric heating wires, magnetic energy, or silicon tube heating can be used to heat the water stored in the water storage chamber.

[0032] The control board is used to receive detection signals from relevant sensors (such as water temperature sensors and flow sensors) and control the power supply to and from the electric heating components.

[0033] When the electric water heater is working, the electric control board controls the electric heating element to be powered on and heated. When the water temperature in the tank reaches the set value, the electric control board controls the electric heating element to be powered off.

[0034] For inner tanks with metal bodies, corrosion is prone to occur due to water quality, necessitating anti-corrosion treatment. The following explanation, in conjunction with the drawings, focuses on inner tanks with metal bodies.

[0035] like Figures 1-4 As shown, one embodiment of this application provides a dual-tank electric water heater, comprising: Upper inner liner 4, wherein a first electric heating element 41 is provided in the upper inner liner 4; The lower inner liner 5 is provided with a second electric heating tube 51. The lower inner liner 5 is located below the upper inner liner 4 and is connected to the upper inner liner 4. Water inlet pipe 6, which is connected to the lower inner tank 5, and the outlet of water inlet pipe 6 is located inside the lower inner tank 5; Water outlet pipe 7 is connected to the upper inner tank 4, and the water inlet of the water outlet pipe 7 is located inside the upper inner tank 4.

[0036] Specifically, the dual-tank electric water heater uses an upper inner tank 4 and a lower inner tank 5 arranged vertically. The upper inner tank 4 and the lower inner tank 5 are connected to each other. The inlet pipe 6 delivers cold water into the lower inner tank 5, and the hot water in the upper inner tank 4 is output from the outlet pipe 7.

[0037] In order to meet the anti-corrosion design requirements of the upper inner liner 4, an anti-corrosion temperature measuring module 100 is installed on the upper inner liner 4. The anti-corrosion temperature measuring module 100 integrates anti-corrosion and temperature measuring functions.

[0038] Specifically, the corrosion-resistant temperature measuring module 100 includes: a mounting support 1, a first electronic anode 2, and a first temperature sensing tube 3. The first electronic anode 2 and the first temperature sensing tube 3 are respectively disposed on the mounting support 1, and a first temperature sensor is disposed in the first temperature sensing tube 3; the mounting support 1 is disposed on the upper inner liner 4, and the first electronic anode 2 and the first temperature sensing tube 3 extend into the interior of the upper inner liner 4.

[0039] Specifically, during the production and assembly stage, the first electronic anode 2 and the first temperature sensing tube 3 are first fixedly installed on the mounting support 1 to form the anti-corrosion temperature measuring module 100. The first temperature sensing tube 3 has a first temperature sensor pre-installed inside. Then, the anti-corrosion temperature measuring module 100 is installed in a preset position on the upper inner liner 4 via the mounting support 1, allowing the first electronic anode 2 and the first temperature sensing tube 3 to extend into the interior of the upper inner liner 4.

[0040] In order to meet the installation requirements of the electric heating element, the upper inner liner 4 is usually provided with an upper flange 42 to meet the installation requirements of the first electric heating element 41. Similarly, the lower inner liner 5 is provided with a lower flange 52 to meet the installation requirements of the second electric heating element 51.

[0041] Furthermore, in order to meet the user's need for rapid hot water output, a third electric heating tube 46 is also provided in the upper inner tank 4, and the third electric heating tube 46 extends to the inlet of the water outlet pipe 7. The first temperature sensing tube 3 extends to the inlet of the water outlet pipe 7.

[0042] Specifically, the third electric heating element 46 installed in the upper inner tank 4 can meet the user's requirement for instant hot water output. Therefore, the third electric heating element 46 typically extends to the top of the upper inner tank 4 and is close to the inlet of the outlet pipe 7, positioned above the first electric heating element 41. Normally, to meet the requirement of instant hot water output, the third electric heating element 46 occupies a significant amount of top space in the upper inner tank 4. However, by using a modular, corrosion-resistant temperature sensing module 100, it can be fixedly installed on the end cap of the upper inner tank 4 via the mounting support 1 to be as close as possible to the top area of ​​the upper inner tank 4. This eliminates the need to install the first electronic anode 2 and the first temperature sensing tube 3 on the upper flange 42.

[0043] In addition, after the first temperature sensing tube 3 extends to the inlet of the outlet pipe 7, it can more accurately detect the temperature of the hot water that is about to flow out of the water heater, so as to achieve more accurate detection of the water temperature and improve the temperature control accuracy.

[0044] In one embodiment, the electrode rod of the first electronic anode 2 is arranged above the third electric heating tube 46.

[0045] Specifically, by placing the first electronic anode 2 above the third electric heating tube 46, when excessive hydrogen accumulates in the upper inner tank 4, causing the water level to drop, the first electronic anode 2 will first emerge from the water surface. Since the first electronic anode 2 needs the water in the upper inner tank 4 to conduct current, in this case, the first electronic anode 2 will stop releasing hydrogen when the power is cut off, thus ensuring that there will be no further increase in hydrogen in the upper inner tank 4 to avoid a continuous drop in the liquid level in the upper inner tank 4. This ensures that the third electric heating tube 46 and the first electric heating tube 41 are always submerged in water, preventing the hydrogen from coming into contact with the third electric heating tube 46 and causing an explosion, thereby improving the safety of the water heater.

[0046] In one embodiment, during the process of heating the water in the upper inner tank 4 using the first electric heating tube 41 in the conventional heating mode, in order to accurately detect the overall water temperature in the upper inner tank 4, a second temperature sensing tube 47 can also be provided on the upper flange 42. The second temperature sensing tube 47 is provided with a second temperature sensor; the second temperature sensing tube 47 is arranged below the first temperature sensing tube 3.

[0047] Specifically, the second temperature sensing tube 47 can be conventionally fixedly installed on the upper flange 42, thus placing it laterally in the middle region of the upper inner tank 4. Located below the first temperature sensing tube 3, the second temperature sensing tube 47 can detect the water temperature in the lower part of the upper inner tank 4. When the first electric heating tube 41 heats the water in the upper inner tank 4, due to the convection characteristics of water, the water temperature in different areas of the upper inner tank 4 may vary, especially at the beginning or during heating. The second temperature sensing tube 47 compensates for the limitations of relying solely on the first temperature sensing tube 3 to detect the water temperature, simultaneously acquiring water temperature information from the lower part of the upper inner tank 4, thereby providing a more comprehensive and accurate reflection of the overall water temperature in the upper inner tank 4.

[0048] By acquiring water temperature information in the lower part of the upper inner tank 4 through the second temperature sensing tube 47, the electronic control board can more accurately control the working time of the first electric heating tube 41. When the water temperature in both the upper and lower areas reaches the set requirements, the first electric heating tube 41 is stopped in time to avoid energy waste; when the water temperature in the lower area is detected to be low and heating needs to continue, the first electric heating tube 41 operates selectively, which can reduce unnecessary energy consumption while ensuring heating effect, thereby improving the energy utilization efficiency of the water heater.

[0049] In another embodiment, a lower flange 52 is provided at one end of the lower inner liner 5, and the second electric heating tube 51 is disposed on the lower flange 52.

[0050] A third temperature sensing tube 53 is also provided on the lower flange 52, and a third temperature sensor is installed in the third temperature sensing tube 53. Specifically, the third temperature sensing tube 53 on the lower flange 52 can be used by the third temperature sensor to detect the water temperature in the lower inner tank 5.

[0051] A second electronic anode 54 is also provided on the lower flange 52.

[0052] Specifically, the second electronic anode 54 is installed on the lower flange 52, and the lower inner liner 5 can be protected against corrosion by current through the second electronic anode 54.

[0053] In one embodiment of this application, as Figures 5-7 As shown, the mounting support 1 is provided with a first mounting port 15 and a second mounting port 16; the first electronic anode 2 is disposed on the mounting support 1 and passes through the first mounting port 15; the first temperature sensing tube 3 is disposed on the mounting support 1 and passes through the second mounting port 16.

[0054] Specifically, the mounting support 1 is equipped with a first mounting port 15 and a second mounting port 16, thereby satisfying the installation requirements of the first electronic anode 2 and the first temperature sensing tube 3 through the first mounting port 15 and the second mounting port 16.

[0055] In actual production, operators pre-install the first electronic anode 2 and the first temperature sensing tube 3 on the mounting support 1 to form an integrated modular structure. Then, during the assembly of the water heater, the first electronic anode 2 and the first temperature sensing tube 3 can be installed together on the upper inner tank 4 of the water heater through the mounting support 1, eliminating the need to install the first electronic anode 2 and the first temperature sensing tube 3 separately, thereby improving the assembly efficiency of the assembly line.

[0056] The first electronic anode 2 is positioned above the first temperature sensing tube 3.

[0057] Specifically, by placing the first electronic anode 2 above the first temperature sensing tube 3, the first electronic anode 2 can be exposed first when there is a lack of water in the upper inner tank 4. This exposes the first electronic anode 2 to the water surface, thus breaking the circuit circuit containing the first electronic anode 2. This prevents the electric heating element in the upper inner tank 4 from being falsely activated due to the low temperature detected by the first temperature sensing tube 3 after it is exposed to the water surface. Furthermore, the excessive accumulation of hydrogen gas in the upper inner tank 4 due to hydrogen evolution at the first electronic anode 2, leading to a drop in the water level and exposure of both the first electronic anode 2 and the first temperature sensing tube 3, solves the problem of false detection by the first temperature sensing tube 3 triggering the electric heating element to dry-burn, potentially causing an explosion of hydrogen gas in the upper inner tank 4. This improves the safety and reliability of the water heater.

[0058] In one embodiment, the first electronic anode 2 is detachably and sealed into the first mounting port 15.

[0059] Specifically, during the use of the water heater in the user's home, as the usage time increases, there may be situations where the first electronic anode 2 is damaged and needs to be repaired or replaced. Therefore, the first electronic anode 2 is installed on the mounting support 1 in a detachable manner.

[0060] In this way, if the first electronic anode 2 is damaged, the operator can remove the first electronic anode 2 from the mounting support 1 and replace it with a new first electronic anode 2 for continued use.

[0061] In one embodiment, an annular groove 21 is provided on the outer periphery of the first electronic anode 2, and a sealing ring 22 is provided on the annular groove 21, the sealing ring 22 being pressed against the inner wall of the first mounting port 15.

[0062] Specifically, since the first electronic anode 2 adopts a detachable installation method, in order to improve the installation sealing of the first electronic anode 2 and prevent water in the upper inner tank 4 from leaking from the connection between the first electronic anode 2 and the first installation port 15, an annular groove 21 can be provided on the first electronic anode 2 to position and install the sealing ring 22.

[0063] Furthermore, after the first electronic anode 2 is inserted into the first mounting port 15, the sealing ring 22 will press against the inner wall of the first electronic anode 2 and the first mounting port 15, so as to effectively seal the connection between the first electronic anode 2 and the first mounting port 15.

[0064] In some embodiments, the mounting support 1 is further provided with a sleeve 11, in which the first mounting port 15 is formed, and the first electronic anode 2 is sealed and inserted into the sleeve 11.

[0065] Specifically, since the first electronic anode 2 adopts a detachable installation method, in order to facilitate the assembly and disassembly by the operator, a sleeve 11 can be provided on the mounting support 1. The sleeve 11 protrudes at least one surface of the mounting support 1, and the first electronic anode 2 is inserted into the sleeve 11 so as to effectively support the first electronic anode 2 using the sleeve 11.

[0066] Meanwhile, in order to improve the sealing performance, multiple sealing rings 22 can be further fitted on the outside of the first electronic anode 2 to form multiple sealing areas through the multiple sealing rings 22.

[0067] In some embodiments, to facilitate the disassembly and assembly of the first electronic anode 2, a locking groove 23 is provided on the first electronic anode 2, and an insertion hole 12 is provided on the tube wall of the sleeve 11, with the pin 13 inserted into the insertion hole 12 and locked in the locking groove 23.

[0068] Specifically, after inserting the first electronic anode 2 into the sleeve 11, the locking groove 23 of the first electronic anode 2 is aligned with the socket 12. Then, the pin 13 is inserted into the socket 12 from the outside, and the pin 13 will be locked in the locking groove 23.

[0069] Under the action of the pin 13, the first electronic anode 2 is restricted in the sleeve 11 and cannot move, so as to fix the first electronic anode 2 in the sleeve 11.

[0070] When it is necessary to disassemble the first electronic anode 2, the pin 13 is pulled out of the socket 12, and the first electronic anode 2 can be pulled out of the sleeve 11.

[0071] In some embodiments, the pin 13 has an overall U-shaped structure, with locking posts 131 formed at both ends of the pin 13, and a connecting rod 132 formed in the middle of the pin 13, the connecting rod 132 connecting the two locking posts 131; The sleeve 11 is provided with two insertion holes 12, the locking pin 131 is inserted into the corresponding insertion hole 12 and locked in the locking slot 23, and the first electronic anode 2 is located between the two locking pins 131.

[0072] Specifically, the pin 13 has a U-shaped structure. After the first electronic anode 2 is inserted into the sleeve 11, the locking pin 131 of the pin 13 is inserted into the corresponding side insertion hole 12, so that the first electronic anode 2 can be more securely assembled into the sleeve 11 by the cooperation of the locking pins 131 on both sides with the locking slots 23 of the first electronic anode 2.

[0073] In some embodiments, the sleeve 11 is further provided with a receiving groove 14 on its wall, and the connecting rod 132 is located in the receiving groove 14.

[0074] Specifically, a receiving groove 14 is provided on the wall of the sleeve 11 to accommodate the connecting rod 132.

[0075] In this way, after the first electronic anode 2 is locked in the sleeve 11 by the pin 13, the connecting rod 132 will be hidden in the receiving groove 14, which can prevent the pin 13 from coming out of the socket 12 due to the operator accidentally touching the connecting rod 132 during the subsequent wiring process, thus improving the reliability of the assembly.

[0076] In some embodiments of this application, the first temperature sensing tube 3 is welded to the mounting support 1.

[0077] Specifically, the first temperature sensing tube 3 can be directly welded to the mounting support 1 by welding. The welding method of the first temperature sensing tube 3 can refer to the conventional technology of welding the first temperature sensing tube 3 to the upper flange 42, and will not be restricted or elaborated here.

[0078] In some embodiments, the end cap of the upper inner liner 4 is provided with a mounting base 43, the mounting base 43 is provided with a mounting channel 44 communicating with the upper inner liner 4, the mounting support 1 is sealed on the mounting base 43, and the first electronic anode 2 and the first temperature sensing tube 3 extend into the upper inner liner 4 through the mounting channel 44.

[0079] Specifically, the mounting support 1 is installed on the outside of the upper flange 42. For this purpose, a mounting seat 43 is provided on the end cap of the upper inner liner 4, and an installation channel 44 is formed on the mounting seat 43 to meet the installation requirements of the first electronic anode 2 and the first temperature sensing tube 3.

[0080] After the first electronic anode 2 and the first temperature sensing tube 3 are inserted into the mounting channel 44, the mounting support 1 is fixedly mounted on the mounting base 43. The mounting base 43 has a threaded section, and the mounting support 1 is fastened to the mounting base 43 by a nut 45 engaging with the threaded section.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A dual-tank electric water heater, characterized in that, include: The upper inner liner is provided with a first electric heating element. The lower inner liner is provided with a second electric heating tube. The lower inner liner is located below the upper inner liner and is connected to the upper inner liner. A water inlet pipe is connected to the lower inner tank, and the outlet of the water inlet pipe is located inside the lower inner tank. A water outlet pipe, which is connected to the upper inner tank, and the water inlet of the water outlet pipe is located inside the upper inner tank; A corrosion-resistant temperature measurement module, comprising a mounting support, a first electronic anode, and a first temperature sensing tube, wherein the first electronic anode and the first temperature sensing tube are respectively disposed on the mounting support, and a first temperature sensor is disposed in the first temperature sensing tube; The mounting support is disposed on the upper inner liner, and the first electronic anode and the first temperature sensing tube extend into the interior of the upper inner liner.

2. The dual-tank electric water heater according to claim 1, characterized in that, The upper inner tank is also provided with a third electric heating tube, which extends to the inlet of the water outlet pipe; The first temperature sensing tube extends to the inlet of the water outlet pipe.

3. The dual-tank electric water heater according to claim 2, characterized in that, The electrode rod of the first electronic anode is arranged above the third electric heating tube.

4. The dual-tank electric water heater according to claim 2, characterized in that, An upper flange is provided at one end of the upper inner liner, and the first electric heating tube and the third electric heating tube are provided on the upper flange; The upper flange is also provided with a second temperature sensing tube, and a second temperature sensor is provided in the second temperature sensing tube; the second temperature sensing tube is arranged below the first temperature sensing tube.

5. The dual-tank electric water heater according to claim 1, characterized in that, A lower flange is provided at one end of the lower inner liner, and the second electric heating tube is disposed on the lower flange; The lower flange is also provided with a third temperature sensing tube, in which a third temperature sensor is installed; and / or, the lower flange is also provided with a second electronic anode.

6. The dual-tank electric water heater according to any one of claims 1-5, characterized in that, The mounting support is provided with a first mounting port and a second mounting port; The first electronic anode passes through the first mounting port, and the first temperature sensing tube passes through the second mounting port.

7. The dual-tank electric water heater according to claim 6, characterized in that, The first electronic anode is detachably and sealed into the first mounting port.

8. The dual-tank electric water heater according to claim 7, characterized in that, An annular groove is provided on the outer periphery of the first electronic anode, and a sealing ring is provided on the annular groove, which is pressed against the inner wall of the first mounting port.

9. The dual-tank electric water heater according to claim 7, characterized in that, The mounting support is also provided with a sleeve, in which the first mounting port is formed, and the first electronic anode is sealed and inserted into the sleeve.

10. The dual-tank electric water heater according to claim 9, characterized in that, The first electronic anode is provided with a locking groove, and the sleeve is provided with an insertion hole. The pin is inserted into the insertion hole and locked in the locking groove.

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