Water tank for water heater and water heater

By installing structural reinforcements and filling the inner wall of the water heater tank with a foam insulation layer, the problem of shell deformation was solved, resulting in a more stable structural design and improved reliability and ease of maintenance.

CN224230322UActive Publication Date: 2026-05-12QINGDAO ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE HAIER WATER HEATER CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE HAIER WATER HEATER CO LTD
Filing Date
2025-04-17
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The outer shell of a conventional water heater tank is prone to deformation at the installation point of the reinforcing plate, which leads to reduced reliability and difficulty in maintenance.

Method used

Structural reinforcements are installed on the inner wall of the outer shell, and a gap is formed between the reinforcements and the outer shell, which is filled with a foam insulation layer. Some of the structural reinforcements are embedded in the foam insulation layer to disperse the force and enhance the connection strength.

Benefits of technology

It effectively reduces casing deformation, improves the reliability and ease of maintenance of the water heater, and extends its service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a water tank for a water heater and the water heater. The water tank for the water heater comprises a shell, and a structural reinforcing part is arranged on the inner wall of the shell; the inner container is arranged in the shell, and a foaming heat preservation layer is arranged between the inner container and the shell; the hanging rack is arranged on the back of the shell and is fixedly connected with the structure reinforcing part; wherein a gap is formed between the structure reinforcing piece and the inner wall of the shell, the gap is filled with a foaming heat preservation layer, and at least part of the structure reinforcing piece is embedded in the foaming heat preservation layer. The deformation of the shell is reduced, so that the maintenance convenience and the use reliability are improved.
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Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, and in particular relates to a water tank and a water heater. Background Technology

[0002] Currently, water heaters are common household appliances in people's daily lives. Water heaters are usually equipped with a water tank to store water. After the water is heated in the water tank, the heated water is output from the water tank to be used by users.

[0003] For conventional water heaters with storage functions, the water tank typically includes an outer shell, an inner tank, an inlet pipe, and an outlet pipe. The inner tank is located inside the outer shell, and the inlet and outlet pipes pass through the outer shell and extend into the inner tank in a sealed manner. To meet the requirements for wall mounting, a bracket is usually installed on the outer shell. To ensure the bracket can support the entire water tank, the connection strength between the bracket and the outer shell needs to be enhanced. Therefore, a reinforcing plate is added to the inner wall of the outer shell, and the bracket is fixedly connected to the reinforcing plate inside the outer shell via screws.

[0004] However, in actual use, the reinforcing plate is tightly attached to the inner wall of the outer casing, and it mainly bears the weight of the water tank. This causes deformation at the location where the reinforcing plate is installed, leading to reduced reliability of the water heater. Furthermore, the deformed casing makes disassembly and repair difficult. Therefore, the technical problem this invention aims to solve is how to design a technology that reduces casing deformation to improve maintenance convenience and reliability. Summary of the Invention

[0005] This invention provides a water tank and water heater for a water heater, which reduces the deformation of the outer shell to improve maintenance convenience and reliability.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In one aspect, the present invention provides a water tank for a water heater, comprising:

[0008] The outer casing has structural reinforcements provided on its inner wall;

[0009] The inner liner is disposed within the outer shell, and a foamed insulation layer is disposed between the inner liner and the outer shell;

[0010] A mounting bracket is disposed on the back of the housing and fixedly connected to the structural reinforcement;

[0011] Wherein, a gap is formed between the structural reinforcement and the inner wall of the outer shell, and the gap is filled with a foamed insulation layer, and at least part of the structural reinforcement is embedded in the foamed insulation layer.

[0012] In one embodiment, the structural reinforcement has a fitting portion that abuts against the inner wall of the outer casing.

[0013] In one embodiment, the structural reinforcement has a protrusion, which forms a gap with the inner wall of the outer shell, and the protrusion is embedded in the foamed insulation layer.

[0014] In one embodiment, the structural reinforcement has raised portions at both ends, and the raised portions are spaced apart from the inner wall of the outer shell, and the raised portions are embedded in the foamed insulation layer.

[0015] In one embodiment, the structural reinforcement is a plate-like structure, and reinforcing ribs are formed on the structural reinforcement.

[0016] In one embodiment, the reinforcing rib is arranged to extend laterally.

[0017] In one embodiment, the reinforcing ribs are arranged to extend longitudinally.

[0018] In one embodiment, the structural reinforcement is provided with a threaded hole; the outer shell is provided with a first through hole, which is arranged opposite to the threaded hole.

[0019] The bracket is provided with a second through hole, and the screw is sequentially connected to the second through hole and the first through hole and threaded into the threaded hole.

[0020] In one embodiment, the outer casing is further provided with a socket, which is located below the first through hole;

[0021] The bracket is provided with a tongue, which is located below the second through hole and extends downward; the tongue is inserted into the hole.

[0022] This application also provides a water heater, including a heating element and the water tank of the water heater described above;

[0023] The heating element is disposed on the water tank of the water heater, and the heating element is configured to heat the water stored in the inner tank of the water heater.

[0024] Compared with existing technologies, the advantages and positive effects of this invention are as follows: By forming a gap between the structural reinforcement and the inner wall of the outer shell, the foam layer fills the gap, and a portion of the structural reinforcement is embedded in the foam insulation layer. Thus, after the water heater is installed via the bracket, the weight of the water tank borne by the bracket is transferred to the structural reinforcement. The structural reinforcement then distributes the force to the outer shell and the foam insulation layer, which also provides structural support, effectively dispersing external forces and reducing the risk of outer shell deformation. This not only maintains the connection strength between the structural reinforcement and the bracket but also utilizes the supporting effect of the foam insulation layer to form a more stable overall structure, improving the service life and safety of the water heater, and reducing outer shell deformation to enhance maintenance convenience and operational reliability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of an embodiment of the water tank in the water heater of the present invention;

[0027] Figure 2 This is a second schematic diagram of the structure of a water tank in a water heater according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 One of the sectional views along the I-I direction;

[0029] Figure 4 for Figure 3 A magnified view of a portion of region II;

[0030] Figure 5 for Figure 2 Sectional view along line I-I, part two;

[0031] Figure 6 for Figure 5 A magnified view of a portion of region III;

[0032] Figure 7 This is an assembly diagram of an embodiment of the water tank in the water heater of the present invention;

[0033] Figure 8 This is one of the structural schematic diagrams of the structural reinforcement component in an embodiment of the water tank of the water heater of the present invention;

[0034] Figure 9This is a second schematic diagram of the structural reinforcement component in one embodiment of the water tank of the water heater of the present invention;

[0035] Figure 10 This is the third structural schematic diagram of the reinforcing member in one embodiment of the water tank of the water heater of the present invention;

[0036] Figure 11 This is a schematic diagram of the bracket structure in one embodiment of the water tank of the water heater of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Outer shell;

[0039] 110. Structural reinforcement; 120. First through hole; 130. Insertion hole;

[0040] 111. Fitting part; 112. Protrusion; 113. Raised part; 114. Reinforcing rib; 115. Threaded hole;

[0041] 200. Inner liner;

[0042] 300. Hanging rack;

[0043] 310. Second through hole; 320. Insert tongue;

[0044] 400. Screws. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention according to the specific circumstances.

[0048] 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.

[0049] The following disclosure provides many different embodiments or examples for implementing various structures of the 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 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] like Figures 1-11 As shown, one embodiment of this application provides a water tank for a water heater, comprising:

[0061] The outer casing 100 has a structural reinforcement 110 provided on its inner wall;

[0062] Inner liner 200, the inner liner 200 is disposed in the outer shell 100, and a foamed insulation layer is disposed between the inner liner 200 and the outer shell 100;

[0063] Hanger 300, which is disposed on the back of the housing 100 and fixedly connected to the structural reinforcement 110;

[0064] Wherein, a gap is formed between the structural reinforcement 110 and the inner wall of the outer shell 100, and the gap is filled with a foamed insulation layer, and at least a portion of the structural reinforcement 110 is embedded in the foamed insulation layer.

[0065] Specifically, the structural reinforcement 110 has a fitting portion 111 that abuts against the inner wall of the housing 100. The fitting portion 111 is in close contact with the inner wall of the housing 100, ensuring that the structural reinforcement 110 can effectively enhance the structural strength of the housing 100.

[0066] A gap is formed between the structural reinforcement 110 and the inner wall of the outer shell 100, and this gap is filled with a foamed insulation layer. At least a portion of the structural reinforcement 110 is embedded in the foamed insulation layer. This structural design allows the structural reinforcement 110 to provide sufficient structural strength while reducing the formation of thermal bridges, effectively reducing heat loss.

[0067] More importantly, since part of the structural reinforcement 110 is embedded in the foamed insulation layer, after the water tank is hung on the wall of the user's home by the bracket 300, the inner tank 200 stores water. After the bracket 300 supports the outer shell 100 and the inner tank 200, the force generated by the bracket 300 on the structural reinforcement 110 is distributed by the structural reinforcement 110 to the outer shell 100 and the foamed insulation layer.

[0068] In this way, it can be avoided that the structural reinforcement 110 transmits all the force to the outer shell 100, which would cause large deformation at the part where the outer shell 100 and the structural reinforcement 110 are in contact.

[0069] In one embodiment, such as Figure 8 As shown, the structural reinforcement 110 has a fitting portion 111, which abuts against the inner wall of the outer shell 100.

[0070] Specifically, the fitting part 111 will be designed to conform to the inner wall of the outer shell 100, and the fitting part 111 will be in close contact with the inner wall of the outer shell 100, thereby ensuring that the fitting part 111 can fit better with the outer shell 100, so as to improve the connection reliability between the structural reinforcement 110 and the outer shell 100, and ensure that the structural reinforcement 110 can effectively enhance the structural strength of the outer shell 100.

[0071] In one embodiment, such as Figure 8 As shown, the structural reinforcement 110 has a protrusion 112, which forms a gap with the inner wall of the outer shell 100, and the protrusion 112 is embedded in the foamed insulation layer.

[0072] Specifically, the design of the protrusion 112 increases the rigidity of the structural reinforcement 110 itself. On the other hand, the protrusion 112 is embedded in the foam insulation layer so that the foam insulation layer can withstand the force transmitted by the structural reinforcement 110 and can work together with the outer shell 100 to bear the force.

[0073] In one embodiment, such as Figure 8As shown, the structural reinforcement 110 has raised portions 113 at both ends, and the raised portions 113 form a gap with the inner wall of the outer shell 100. The raised portions 113 are embedded in the foamed insulation layer.

[0074] Specifically, the two ends of the structural reinforcement 110 form raised portions 113. The design of the raised portions 113 allows the two ends of the structural reinforcement 110 to be inserted into the foamed insulation layer, so as to achieve the installation requirement of partially embedding the structural reinforcement 110.

[0075] In one embodiment, such as Figure 9 and Figure 10 As shown, the structural reinforcement 110 is a plate-shaped structure, and reinforcing ribs 114 are formed on the structural reinforcement 110.

[0076] Specifically, the reinforcing ribs 114 can effectively improve the overall structural strength of the structural reinforcement 110. Furthermore, the reinforcing ribs 114 distributed on the raised portion 113 or the protruding portion 112 can further increase the connection and contact area with the foamed insulation layer, thereby better transmitting the force to the foamed insulation layer.

[0077] like Figure 9 As shown, the reinforcing rib 114 is formed on the reinforcing member 110 in a transversely extending manner.

[0078] like Figure 10 As shown, the reinforcing rib 114 is formed on the reinforcing member 110 in a longitudinally extending manner.

[0079] In another embodiment of this application, such as Figure 5 , Figure 6 and Figure 8 As shown, the structural reinforcement 110 is provided with a threaded hole 115; the outer shell 100 is provided with a first through hole 120, and the first through hole 120 and the threaded hole 115 are arranged opposite to each other.

[0080] The bracket 300 is provided with a second through hole 310, and the screw 400 is sequentially connected to the second through hole 310 and the first through hole 120 and threadedly connected in the threaded hole 115.

[0081] Specifically, in order to facilitate the connection and fixation of the bracket 300 and the structural reinforcement 110, after the bracket 300 is placed on the back of the outer shell 100, the second through hole is aligned with the first through hole, and the screw 400 passes through the second through hole and the first through hole and is then threaded into the screw 400 hole, so that the bracket 300 is firmly fixed to the outer shell 100.

[0082] In one embodiment, such as Figure 4As shown, the outer casing 100 is also provided with a socket 130, which is located below the first through hole 120;

[0083] The hanger 300 is provided with a tongue 320, which is located below the second through hole 310 and extends downward; the tongue 320 is inserted into the socket 130.

[0084] Specifically, the outer casing 100 is provided with a socket 130, and the corresponding bracket 300 is provided with a tongue 320. When the bracket 300 is fixedly connected to the outer casing 100, the tongue 320 is first inserted into the socket 130 to achieve pre-assembly of the bracket 300, and then the bracket 300 is fixed to the outer casing 100 by screws 400.

[0085] During the production process, the inner tank 200 is first placed into the outer shell 100. Then, foamed insulation material is injected between the inner tank 200 and the outer shell 100 to form a foamed insulation layer. Structural reinforcement 110 is pre-fixed to the inner wall of the outer shell 100, with a portion of the structural reinforcement 110 embedded within the foamed insulation layer. Finally, the tongue 320 on the bracket 300 is inserted into the insertion hole 130 on the outer shell 100. The bracket 300 is fixed to the back of the outer shell 100 by screws 400. The screws 400 pass through the second through hole 310 on the bracket 300 and the first through hole 120 on the outer shell 100, and are threaded into the threaded hole 115 on the structural reinforcement 110, completing the assembly of the water heater tank.

[0086] By creating a gap between the structural reinforcement and the inner wall of the outer shell, the foam layer fills the gap, and part of the structural reinforcement is embedded in the foam insulation layer. Thus, after the water heater is installed via a bracket, the weight of the water tank borne by the bracket is transferred to the structural reinforcement. The structural reinforcement then distributes the force to the outer shell and the foam insulation layer, which also provides structural support, effectively dispersing external forces and reducing the risk of outer shell deformation. This not only maintains the connection strength between the structural reinforcement and the bracket but also utilizes the supporting function of the foam insulation layer to form a more stable overall structure, improving the water heater's lifespan and safety, and reducing outer shell deformation to enhance maintenance convenience and operational reliability.

[0087] 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 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.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 the present invention.

Claims

1. A water tank for a water heater, characterized in that, include: The outer casing has structural reinforcements provided on its inner wall; The inner liner is disposed within the outer shell, and a foamed insulation layer is disposed between the inner liner and the outer shell; A mounting bracket is disposed on the back of the housing and fixedly connected to the structural reinforcement; Wherein, a gap is formed between the structural reinforcement and the inner wall of the outer shell, and the gap is filled with a foamed insulation layer, and at least part of the structural reinforcement is embedded in the foamed insulation layer.

2. The water tank for a water heater according to claim 1, characterized in that, The structural reinforcement has a fitting portion that abuts against the inner wall of the outer shell.

3. The water tank for a water heater according to claim 2, characterized in that, The structural reinforcement has a protrusion, which forms a gap with the inner wall of the outer shell, and the protrusion is embedded in the foamed insulation layer.

4. The water tank for a water heater according to claim 3, characterized in that, The structural reinforcement has raised portions at both ends, and the raised portions form a gap with the inner wall of the outer shell. The raised portions are embedded in the foamed insulation layer.

5. The water tank for a water heater according to claim 1, characterized in that, The structural reinforcement is a plate-like structure, and reinforcing ribs are formed on the structural reinforcement.

6. The water tank for a water heater according to claim 5, characterized in that, The reinforcing ribs are arranged in a transverse extension manner.

7. The water tank for a water heater according to claim 5, characterized in that, The reinforcing ribs are arranged longitudinally.

8. The water tank of the water heater according to any one of claims 1-7, characterized in that, The structural reinforcement is provided with a threaded hole; the outer shell is provided with a first through hole, which is arranged opposite to the threaded hole. The bracket is provided with a second through hole, and the screw is sequentially connected to the second through hole and the first through hole and threaded into the threaded hole.

9. The water tank for a water heater according to claim 8, characterized in that, The outer casing is also provided with a socket, which is located below the first through hole; The bracket is provided with a tongue, which is located below the second through hole and extends downward; the tongue is inserted into the hole.

10. A water heater, comprising a heating element, characterized in that, It also includes the water tank for the water heater as described in any one of claims 1-9; The heating element is disposed on the water tank of the water heater, and the heating element is configured to heat the water stored in the inner tank of the water heater.