Heating assembly for electric water heater and electric water heater

Abstract

The electric water heater comprises an inner container, an installation opening is formed in the inner container, a heating cavity is formed in the inner container, and the heating assembly for the electric water heater comprises a flange plate, a first hole site and a second hole site are formed in the flange plate in the vertical direction; the heating pipe comprises a first pipe body and a second pipe body, the first pipe body and the second pipe body are bent towards the bottom of the inner container, and each of the first pipe body and the second pipe body comprises a starting end section, a bent section and a tail end section which are sequentially connected; the starting end section of the first pipe body and the starting end section of the second pipe body are respectively fixed on the flange plate through the first hole site and the second hole site; the tail end section is bent and rotated towards the flange plate side to form a bent part, and the bent part is located above the tail end section. The installation space occupied by the first pipe body and the second pipe body on the flange plate is small, and a large spatial freedom degree is provided for installation of other components on the flange plate. And the bending part is positioned above the tail end section, so that the structural stability of the heating pipe can be improved.

Description

Technical Field

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

[0002] Currently, water heaters are common household appliances, categorized into gas water heaters, electric water heaters, heat pump water heaters, and solar water heaters. Electric water heaters are widely used due to their convenience. Electric water heaters can be further classified by heating power into storage-type and instantaneous types. Storage-type water heaters, equipped with a water tank, offer advantages such as large water output and stable water temperature, making them more popular among families.

[0003] Storage-type electric water heaters heat water through heating elements within the inner tank. These heating elements are mostly vertical, which reduces the installation space required on the flange and facilitates the mounting of other components. However, if one of the two sections of the heating element is too close to the inner tank, it can lead to structural instability and make the element prone to damage and deformation during transport. Therefore, designing a structurally stable heating element is the technical problem this invention aims to solve. Utility Model Content

[0004] This invention provides a heating component and an electric water heater for use in electric water heaters, thereby improving the structural stability of the heating element.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, this utility model provides a heating assembly for an electric water heater, the electric water heater including an inner tank, the inner tank having an installation port, and a heating cavity formed therein, the heating assembly for the electric water heater comprising:

[0007] A flange for fixing to the inner liner and sealing the mounting port, the flange having a first hole and a second hole arranged vertically;

[0008] A heating element, wherein the heating element is used to generate heat when energized;

[0009] The heating tube includes a first tube and a second tube connected together. Both the first tube and the second tube are bent toward the bottom of the inner liner. Both the first tube and the second tube include a starting section, a bent section and an ending section connected in sequence. The starting section of the first tube and the starting section of the second tube are fixed to the flange through the first hole and the second hole, respectively. The ending section is bent and rotated toward the flange to form a bent portion, which is located above the ending section.

[0010] In some embodiments of this application, the distance between the end section of the first tube and the inner wall surface of the inner liner is equal to the distance between the end section of the second tube and the inner wall surface of the inner liner.

[0011] By setting the distances between the end sections of the first and second pipes and the inner wall surface to be equal, structural stability can be improved.

[0012] In some embodiments of this application, the first hole is located above the second hole in the vertical direction, the bent section of the first tube is located above the bent section of the second tube, and there is a gap between the bent section of the first tube and the bent section of the second tube.

[0013] In the vertical direction, since the beginning of the first tube is above the beginning of the second tube, the bend of the first tube is above the bend of the second tube. This makes it easy to stagger the first and second tubes. The gap between the bends of the first and second tubes can prevent the bends of the first and second tubes from contacting each other, so that the heating tube can heat the water in the inner tank more evenly.

[0014] In some embodiments of this application, a third hole is formed on the flange, and the heating assembly for the electric water heater further includes:

[0015] A temperature measuring tube is fixed to the flange through the third hole; along the horizontal direction, a first mounting area and a second mounting area are formed side by side on the flange, the third hole is located in one of the first mounting area and the second mounting area, and the first hole and the second hole are located in the other of the first mounting area and the second mounting area.

[0016] By dividing the flange into a first installation area and a second installation area along the horizontal direction, and ensuring that the third hole where the temperature measuring tube is located is not in the same installation area as the first and second holes where the heating tube is located, the temperature measuring tube can be avoided from the area directly above the heating tube. This helps to prevent the hot water from impacting the temperature measuring tube during the heating process, which could lead to falsely high displayed temperatures.

[0017] In some embodiments of this application, a fourth hole is formed on the flange, and the heating assembly for the electric water heater further includes:

[0018] A magnesium rod is fixed to the flange through the fourth hole, which is located in the same mounting area as the third hole.

[0019] By placing the fourth hole, where the magnesium rod is located, in the same installation area as the third hole, the installation positions of the temperature measuring tube and the magnesium rod can be adjusted with a high degree of freedom.

[0020] In some embodiments of this application, the starting section of the first tube and / or the starting section of the second tube are parallel to the axial direction of the inner liner.

[0021] By aligning the beginning sections of the first and / or second tubes with the axial direction of the inner liner, the regularity of the heating tube's beginning section can be improved, facilitating processing and manufacturing.

[0022] In some embodiments of this application, the end section of the first tube and / or the end section of the second tube are parallel to the axial direction of the inner liner.

[0023] By aligning the end sections of the first and / or second tubes with the axial direction of the inner liner, the regularity of the heating tube end sections can be improved, facilitating processing and manufacturing.

[0024] In some embodiments of this application, the free end of the bend in the first tube is connected to the free end of the bend in the second tube.

[0025] By connecting the free ends of the bends in the first tube and the second tube, this structure has high thermal efficiency and uniform heating, effectively transferring heat to the water; it is also compact and strong, allowing for a larger heating area in a limited space.

[0026] In a second aspect, this utility model provides an electric water heater, comprising:

[0027] shell;

[0028] The inner liner is disposed within the outer shell;

[0029] The heating assembly for an electric water heater as described in any one of the first aspect embodiments above is disposed on the inner tank.

[0030] In some embodiments of this application, the inner liner is arranged laterally within the outer shell.

[0031] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The heating component for the electric water heater includes a flange and a heating tube. The heating tube includes a first tube body and a second tube body connected together. Both the first tube body and the second tube body are bent towards the bottom of the inner tank. Both the first tube body and the second tube body include a starting section, a bent section and an ending section connected in sequence. The flange is provided with a first hole and a second hole in the vertical direction. The starting sections of the first tube body and the second tube body are fixed to the flange through the first hole and the second hole. In this way, the installation space occupied by the first tube body and the second tube body on the flange is small, which provides a greater degree of spatial freedom for the installation of other components on the flange.

[0032] Meanwhile, the end section is bent and rotated to form a bend, which is located above the end section. This improves the structural stability of the heating tube and helps to avoid the heating tube from being bumped or deformed during transportation. Attached Figure Description

[0033] 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.

[0034] Figure 1 A schematic diagram of the structure of an embodiment of the electric water heater provided by this utility model;

[0035] Figure 2 A right view of an embodiment of the electric water heater provided by this utility model;

[0036] Figure 3 One of the internal structural diagrams of the electric water heater provided by this utility model;

[0037] Figure 4 A second schematic diagram of the internal structure of the electric water heater provided by this utility model;

[0038] Figure 5 One of the structural schematic diagrams of the heating component for an electric water heater provided by this utility model;

[0039] Figure 6 The second schematic diagram of the structure of the heating component for an electric water heater provided by this utility model;

[0040] Figure 7 The third schematic diagram of the structure of the heating component for an electric water heater provided by this utility model.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Inner liner; 11. Mounting port; 12. Heating chamber;

[0043] 2. Flange; 21. First hole; 22. Second hole; 23. Third hole; 24. First mounting area; 25. Second mounting area; 26. Fourth hole;

[0044] 3. Heating tube; 31. First tube body; 32. Second tube body; 33. Starting end section; 34. Bending section; 35. End section; 36. Bending part;

[0045] 4. Temperature measuring tube. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] For water tanks with metal inner liner, corrosion can easily occur inside due to water quality. Therefore, magnesium rods are installed on the water tank and inserted into the water storage cavity inside the tank.

[0056] Magnesium has the lowest electrochemical potential among metals and is physiologically non-toxic. Therefore, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protection; the larger the magnesium rod, the better the protection and the longer the protection time.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] In the first aspect, combining Figures 1 to 7 As shown, this embodiment of the present disclosure provides a heating assembly for an electric water heater. The electric water heater includes an inner tank 1 for storing water. The inner tank 1 is provided with an installation port 11 and a heating chamber 12 is formed in the inner tank 1. The heating assembly for the electric water heater includes a flange 2 and a heating tube 3.

[0062] Combination Figure 2 As shown, the flange 2 is used to fix the inner liner 1 and close the installation port 11. In order to reduce the occurrence of water leakage in the inner liner 1, a sealing gasket is provided at the contact point between the flange 2 and the inner liner 1. The inner liner 1 is arranged horizontally, and along the vertical direction, the flange 2 is provided with a first hole 21 and a second hole 22.

[0063] Combination Figure 3 As shown, the heating pipe 3 is used to electrically heat the water in the heating chamber 12. The heating pipe 3 includes a first pipe body 31 and a second pipe body 32 connected together. Both the first pipe body 31 and the second pipe body 32 are bent towards the bottom of the inner tank 1. Each of the first pipe body 31 and the second pipe body 32 includes a starting section 33, a bent section 34, and an ending section 35 connected in sequence. Specifically, the starting section 33, the bent section 34, and the ending section 35 of the first pipe body 31 are connected in sequence, and the starting section 33, the bent section 34, and the ending section 35 of the second pipe body 32 are connected in sequence. The ending section 35 is bent and rotated towards the flange 2 to form a bend 36.

[0064] The starting section 33 of the first tube 31 and the starting section 33 of the second tube 32 are fixed to the flange 2 through the first hole 21 and the second hole 22, respectively, so as to fix the heating tube 3 to the flange 2.

[0065] Specifically, the heating component for the electric water heater includes a flange 2 and a heating tube 3. The heating tube 3 includes a first tube body 31 and a second tube body 32 connected together. Both the first tube body 31 and the second tube body 32 are bent toward the bottom of the inner tank 1. Both the first tube body 31 and the second tube body 32 include a starting section 33, a bent section 34 and an ending section 35 connected in sequence. The flange 2 is provided with a first hole 21 and a second hole 22. The starting section 33 of the first tube body 31 and the starting section 33 of the second tube body 32 are fixed to the flange 2 through the first hole 21 and the second hole 22, respectively. In this way, the installation space occupied by the first tube body 31 and the second tube body 32 on the flange 2 is small, providing greater spatial freedom for the installation of other components on the flange 2.

[0066] In some embodiments, the distance between the end segment 35 of the first tube 31 and the inner wall surface of the inner liner 1 is equal to the distance between the end segment 35 of the second tube 32 and the inner wall surface of the inner liner 1.

[0067] Combination Figure 4 As shown, the distance between the end section 35 of the first tube 31 and the inner wall of the inner liner 1 is equal to the distance between the end section 35 of the second tube 32 and the inner wall of the inner liner 1. This can reduce noise during the heating process and improve the structural stability of the heating tube 3. The heating tube 3 is not easily deformed, which helps to avoid the occurrence of bumps and deformations of the heating tube 3 during installation or transportation.

[0068] It should be noted that, see Figure 4 The distance between the end section 35 of the first pipe body 31 and the inner wall of the inner liner 1 is equal to the distance between the end section 35 of the second pipe body 32 and the inner wall of the inner liner 1. If the distance between the end section 35 of the first pipe body 31 and the center of the flange 2 is L1, and the distance between the end section 35 of the second pipe body 32 and the center of the flange 2 is L2, then L1 = L2.

[0069] In some embodiments of this application, along the vertical direction, the first hole 21 is located above the second hole 22, the bent section 34 of the first tube 31 is located above the bent section 34 of the second tube 32, and there is a gap between the bent section 34 of the first tube 31 and the bent section 34 of the second tube 32.

[0070] Specifically, in the vertical direction, since the first hole 21 is located above the second hole 22, the beginning section 33 of the first tube 31 is located above the beginning section 33 of the second tube 32, and the bent section 34 of the first tube 31 is located above the bent section 34 of the second tube 32, this makes it convenient to stagger the first tube 31 and the second tube 32 when bending. There is a gap between the bent sections 34 of the first tube 31 and the second tube 32, which can prevent the bent sections 34 of the first tube 31 and the second tube 32 from contacting each other, so that the heating tube 3 can heat the water in the inner tank 1 more evenly.

[0071] This is because if the bent section 34 of the first tube 31 and the bent section 34 of the second tube 32 come into contact, there are two heating areas at the contact point. Overheating will cause the heating tube 3 to melt, resulting in corrosion or leakage of the heating tube 3, affecting the lifespan of the heating tube 3 and endangering the safety of the user.

[0072] Specifically, during bending, the second tube 32 is bent first, followed by the first tube 31. The bending degree of the first tube 31 is greater than that of the second tube 32, which is beneficial to position the bent section 34 of the first tube 31 above the bent section 34 of the second tube 32.

[0073] In some embodiments of this application, combined with Figure 5 and Figure 6 As shown, a third hole 23 is formed on the flange 2, and the heating component for the electric water heater also includes a temperature measuring tube 4.

[0074] The temperature measuring tube 4 is fixed to the flange 2 through the third hole 23; along the horizontal direction, the flange 2 has a first mounting area 24 and a second mounting area 25 arranged side by side on the circular area corresponding to the mounting port 11. The dotted line in the figure indicates the dividing line between the first mounting area 24 and the second mounting area 25. The third hole 23 is located in one of the first mounting area 24 and the second mounting area 25, and the first hole 21 and the second hole 22 are located in the other of the first mounting area 24 and the second mounting area 25.

[0075] Specifically, during the process of heating water by heating tube 3, since the density of hot water is less than that of cold water, hot water moves upward and cold water moves downward. Therefore, the hole of temperature measuring tube 4 on flange 2 needs to avoid heating tube 3.

[0076] In this embodiment, the flange 2 is divided into a first installation area 24 and a second installation area 25 along the horizontal direction. The third hole 23 where the temperature measuring tube 4 is located is not in the same installation area as the first hole 21 and the second hole 22 where the heating tube 3 is located. This allows the temperature measuring tube 4 to avoid the area directly above the heating tube 3, which helps to prevent the hot water from impacting the temperature measuring tube 4 during the heating process and causing the displayed temperature to be falsely high.

[0077] In some embodiments of this application, a fourth hole 26 is formed on the flange 2, and the heating assembly for the electric water heater also includes a magnesium rod.

[0078] The magnesium rod is fixed to the flange 2 through the fourth hole 26. The fourth hole 26 and the third hole 23 are located in the same installation area.

[0079] Specifically, by setting the fourth hole 26 where the magnesium rod is located in the same installation area as the third hole 23, the installation position of the magnesium rod, like the temperature measuring tube 4, has a high degree of freedom in adjustment.

[0080] For example, see Figure 6 The first hole 21 and the second hole 22 are located in the first mounting area 24, and the third hole 23 and the fourth hole 26 are located in the second mounting area 25.

[0081] In this embodiment of the disclosure, by setting a magnesium rod, the magnesium rod will release magnesium ions, which will slow down the formation of limescale and scale in the inner tank 1 of the electric water heater, effectively preventing a large amount of scale from adhering to the inner wall of the inner tank 1 and avoiding corrosion of the inner tank 1.

[0082] In some embodiments of this application, combined with Figure 7 As shown, the starting section 33 of the first tube 31 and / or the starting section 33 of the second tube 32 are parallel to the axial direction of the inner liner 1.

[0083] Specifically, by making the starting section 33 of the first tube 31 and / or the starting section 33 of the second tube 32 parallel to the axial direction of the inner liner 1, the regularity of the starting section 33 of the heating tube 3 can be improved, making it easier to process and manufacture.

[0084] In some embodiments of this application, the end segment 35 of the first tube 31 and / or the end segment 35 of the second tube 32 are parallel to the axial direction of the inner liner 1.

[0085] Specifically, by making the end section 35 of the first tube 31 and / or the end section 35 of the second tube 32 parallel to the axial direction of the inner liner 1, the regularity of the end section 35 of the heating tube 3 can be improved, making it easier to process and manufacture.

[0086] In some other embodiments of this application, the free end of the bend 36 of the first tube 31 and the free end of the bend 36 of the second tube 32 are connected to form a U-shaped structure.

[0087] Specifically, by connecting the free end of the bend 36 of the first tube 31 and the free end of the bend 36 of the second tube 32 to form a U-shaped structure, this structure has high thermal efficiency and uniform heating, and can effectively transfer heat to the water; at the same time, the structure is compact and can achieve a larger heating area in a limited space.

[0088] In some embodiments of this application, the first tube 31 and the second tube 32 are integrally formed structures.

[0089] Specifically, by setting the first tube body 31 and the second tube body 32 as an integral molding structure, it is convenient to process and install, which helps to improve production efficiency.

[0090] In a second aspect, the present invention provides an electric water heater, which includes a shell, an inner tank 1, and a heating component for the electric water heater as described in any of the embodiments of the first aspect above.

[0091] The heating element for the electric water heater is disposed on the inner tank 1, which is located within the outer shell. Since it includes the heating element for the electric water heater as described in any of the embodiments of the first aspect above, it possesses all of its beneficial effects, which will not be elaborated further here.

[0092] In some embodiments of this application, the inner liner 1 is arranged laterally within the outer shell.

[0093] 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.

[0094] 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 heating assembly for an electric water heater, the electric water heater comprising an inner tank, the inner tank having an installation port, and a heating chamber formed therein, characterized in that, The heating component for the electric water heater includes: A flange for fixing to the inner liner and sealing the mounting port, the flange having a first hole and a second hole arranged vertically; A heating element, wherein the heating element is used to generate heat when energized; The heating tube includes a first tube and a second tube connected together. Both the first tube and the second tube are bent toward the bottom of the inner liner. Both the first tube and the second tube include a starting section, a bent section and an ending section connected in sequence. The starting section of the first tube and the starting section of the second tube are fixed to the flange through the first hole and the second hole, respectively. The ending section is bent and rotated toward the flange to form a bent portion, which is located above the ending section.

2. The heating assembly for an electric water heater according to claim 1, characterized in that, The distance between the end section of the first tube and the inner wall of the inner liner is equal to the distance between the end section of the second tube and the inner wall of the inner liner.

3. The heating assembly for an electric water heater according to claim 1, characterized in that, In the vertical direction, the first hole is located above the second hole, the bent section of the first tube is located above the bent section of the second tube, and there is a gap between the bent sections of the first tube and the bent sections of the second tube.

4. The heating assembly for an electric water heater according to claim 3, characterized in that, The flange has a third hole, and the heating assembly for the electric water heater further includes: A temperature measuring tube is fixed to the flange through the third hole; along the horizontal direction, a first mounting area and a second mounting area are formed side by side on the flange, the third hole is located in one of the first mounting area and the second mounting area, and the first hole and the second hole are located in the other of the first mounting area and the second mounting area.

5. The heating assembly for an electric water heater according to claim 4, characterized in that, The flange has a fourth hole, and the heating assembly for the electric water heater further includes: A magnesium rod is fixed to the flange through the fourth hole, which is located in the same mounting area as the third hole.

6. The heating assembly for an electric water heater according to claim 1, characterized in that, The starting section of the first tube and / or the starting section of the second tube are parallel to the axial direction of the inner liner.

7. The heating assembly for an electric water heater according to claim 1, characterized in that, The end section of the first tube and / or the end section of the second tube are parallel to the axial direction of the inner liner.

8. The heating assembly for an electric water heater according to claim 1, characterized in that, The free end of the bend in the first tube is connected to the free end of the bend in the second tube.

9. An electric water heater, characterized in that, include: shell; The inner liner is disposed within the outer shell; The heating assembly for an electric water heater as described in any one of claims 1 to 8, wherein the heating assembly for the electric water heater is disposed on the inner tank.

10. The electric water heater according to claim 9, characterized in that, The inner liner is arranged laterally within the outer shell.

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