Water heater inner container and water heater

Abstract

The utility model relates to the field of water heaters, and provides a water heater inner container and a water heater. The water heater inner container comprises an inner container body, a reinforcing layer and a container opening flange, the inner container body comprises a container body and a container opening outward turning structure which are integrally connected, a container opening is defined by the container opening outward turning structure, the outer surface of the container body is smoothly arranged, the reinforcing layer covers the periphery of the container body, and a clamping part is arranged at the end, facing the container opening outward turning structure, of the reinforcing layer; a clamping gap is formed between the clamping part and the container body, the container opening flange comprises a base and a flange plate which are integrally connected, the flange plate is arranged on the container opening outward turning structure in a sleeving mode, and at least part of the base is embedded in the clamping gap and attached to the container body and the reinforcing layer. According to the inner container of the water heater, an annular containing groove does not need to be formed in the container body, so that the surface of the container body does not have structural sudden change, a stress concentration area does not exist, the problem of deformation or damage caused by stress concentration is effectively avoided, and the stability and reliability of the inner container under the high-temperature or high-pressure condition are improved.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a water heater inner tank and a water heater. Background Technology

[0002] Patent document CN221881798U discloses a water heater inner tank and a water heater. The technical solution has an annular receiving groove on the tank body, thereby providing a stable installation position for the tank flange, ensuring that the tank flange and the tank body can fit tightly together and reducing the gap between them.

[0003] However, the annular receiving groove creates stress concentration areas on the inner liner. Under high temperature or high pressure conditions, these stress concentration areas may become weak points in the inner liner, leading to local deformation or damage. Utility Model Content

[0004] This utility model provides a water heater inner tank and a water heater, aiming to solve the problem of stress concentration areas formed in existing water heater inner tanks due to the annular receiving groove set on the tank body.

[0005] The water heater inner tank provided by this utility model includes an inner tank body, a reinforcing layer, and a tank opening flange. The inner tank body includes an integrally connected tank body and a tank opening everted structure. The tank opening everted structure surrounds and forms a tank opening. The outer surface of the tank body is smoothly disposed. The reinforcing layer covers the outer periphery of the tank body. One end of the reinforcing layer facing the tank opening everted structure is provided with a clamping part. A clamping gap is formed between the clamping part and the tank body. The tank opening flange includes an integrally connected base and a flange. The flange is sleeved on the tank opening everted structure. The base is at least partially embedded in the clamping gap and is fitted to the tank body and the reinforcing layer.

[0006] In one embodiment, the inner tank of the water heater further includes an adapter, which is sleeved on the outward-facing structure of the tank opening, and the flange covers the adapter and is fixedly connected to the adapter.

[0007] In one embodiment, the flange includes an integrally connected first disc and a second disc. The first disc is disposed at one end of the base facing the outward-curving structure of the duct opening and is bent into the base. The second disc is disposed at the end of the first disc away from the base and is bent into the first disc, with the second disc facing opposite to the base. The end face of the second disc is fitted to the outward-curving structure of the duct opening. An installation space is formed between the first disc, the second disc, and the outward-curving structure of the duct opening, and the adapter is disposed within the installation space.

[0008] In one embodiment, the second disc body is provided with a plurality of first limiting through holes, which are arranged in a ring at intervals on the second disc body; the adapter is provided with a plurality of second limiting through holes opposite to the first limiting through holes, and fasteners are inserted in the first limiting through holes and the second limiting through holes to achieve a fixed connection between the flange and the adapter.

[0009] In one embodiment, the adapter includes a first adapter and a second adapter, both of which are fitted onto the everted vent structure. The second adapter is an elastic member and is disposed on top of the first adapter.

[0010] In one embodiment, the outer side of the everted bile duct structure is provided with an annular groove surrounding the bile duct, and the adapter is sleeved on the everted bile duct structure and confined within the annular groove.

[0011] In one embodiment, a limiting member protrudes from the outer side of the everted duct structure, and a limiting groove is provided on the adapter for the limiting member to be inserted into, with the limiting member embedded in the limiting groove.

[0012] In one embodiment, the reinforcing layer is formed by fiber winding.

[0013] In one embodiment, the flange is made of sheet metal or high-strength plastic.

[0014] This utility model also provides a water heater, which includes a shell assembly, a heating assembly, and the aforementioned water heater inner tank. The shell assembly has an installation cavity, the water heater inner tank is disposed on the shell assembly and located in the installation cavity, and the heating assembly is disposed on the water heater inner tank.

[0015] The water heater inner tank provided by this utility model includes an inner tank body, a reinforcing layer, and a tank opening flange. The inner tank body includes an integrally connected tank body and a tank opening everted structure. The tank opening everted structure surrounds and forms the tank opening. The outer surface of the tank body is smoothly arranged. The reinforcing layer covers the outer periphery of the tank body. One end of the reinforcing layer facing the tank opening everted structure is provided with a clamping part. A clamping gap is formed between the clamping part and the tank body. The tank opening flange includes an integrally connected base and a flange. The flange is sleeved on the tank opening everted structure. The base is at least partially embedded in the clamping gap and is fitted to the tank body and the reinforcing layer. This water heater's inner tank eliminates the need for an annular receiving groove on the tank body. Instead, a clamping part is located at the end of the reinforcing layer facing the outward-flaring structure of the tank opening. A clamping gap is formed between the clamping part and the tank body, and the base of the tank opening flange is then clamped within this gap. This not only achieves a seamless connection between the tank opening flange and the inner tank body but also maintains the smoothness and continuity of the tank body surface. This eliminates structural abrupt changes and stress concentration areas, effectively preventing deformation or damage caused by stress concentration and improving the stability and reliability of the inner tank under high temperature or high pressure conditions. Furthermore, the absence of structural abrupt changes on the tank body surface results in relatively better structural strength and reduces manufacturing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the inner tank of a water heater provided in an embodiment of this utility model;

[0018] Figure 2 This is an exploded view of the inner tank of the water heater provided in this embodiment of the utility model;

[0019] Figure 3 This is a cross-sectional view of the inner tank of the water heater provided in an embodiment of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 for Figure 4 Exploded view.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Inner tank of water heater; 10. Inner tank body; 11. Tank body; 12. Outward-flaring structure of tank opening; 121. Annular groove; 122. Limiting component; 13. Tank opening; 20. Reinforcing layer; 21. Clamping gap; 22. Clamping part; 30. Tank opening flange; 31. Base; 32. Flange; 321. First disc body; 322. Second disc body; 323. First limiting through hole; 324. Fastener; 40. Adapter; 41. First adapter; 42. Second adapter; 43. Second limiting through hole; 44. Limiting groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0026] Furthermore, in embodiments of this utility model, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the structure, feature, device, or element referred to must have a specific orientation or positional relationship, nor that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0027] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this utility model will not be described separately.

[0028] This utility model provides a water heater inner tank and a water heater, aiming to solve the problem of stress concentration areas formed in existing water heater inner tanks due to the annular receiving groove set on the tank body.

[0029] like Figures 1 to 5As shown, the water heater inner tank 100 provided by this utility model includes an inner tank body 10, a reinforcing layer 20, and a tank opening flange 30. The inner tank body 10 includes an integrally connected tank body 11 and a tank opening outward folding structure 12. The tank opening outward folding structure 12 surrounds to form a tank opening 13. The outer surface of the tank body 11 is smoothly disposed. The reinforcing layer 20 covers the outer periphery of the tank body 11. A clamping part 22 is provided at one end of the reinforcing layer 20 facing the tank opening outward folding structure 12. A clamping gap 21 is formed between the clamping part 22 and the tank body 11. The tank opening flange 30 includes an integrally connected base 31 and a flange 32. The flange 32 is sleeved on the tank opening outward folding structure 12. The base 31 is at least partially embedded in the clamping gap 21 and is fitted to the tank body 11 and the reinforcing layer 20.

[0030] In this water heater's inner tank 100, the inner tank body 10 is integrally molded, meaning the tank body 11 and the outward-flaring structure 12 are connected as a single unit. This eliminates weld points on the inner tank body 10, preventing leakage at weld points when the inner tank body 10 is under high pressure. The inner tank body 10 can be made of metal or non-metal (plastic). When metal is used, the inner tank body 10 can be coated with an anti-corrosion layer (such as enamel), and a highly oxidizing material such as a magnesium rod can be further placed inside the inner tank body 10 to further prevent corrosion through an electrochemical reaction.

[0031] The reinforcing layer 20 can be made of wound fibers and covers the outer periphery of the inner tank 11. The material of the reinforcing layer 20 can be, but is not limited to, carbon fiber, polyester fiber, silicon carbide fiber, and glass fiber. The reinforcing layer 20 has a certain strength, which can improve the strength of the inner tank 100 of the water heater and reduce the possibility of high-temperature deformation of the inner tank 100. For example, the reinforcing layer 20 can be adhered to the outer periphery of the inner tank 11 using an adhesive; or, the reinforcing layer 20 can be formed by using hot melt adhesive or by heating to partially melt the fiber material with the surface of the inner tank 11, forming an integral whole; or, the fiber material can be wound around the outer periphery of the inner tank, and then cured to form a strong integral layer that is tightly bonded to the inner tank 11.

[0032] In the prior art, to ensure a tight fit between the inner liner flange 30 and the inner liner body 11, an annular receiving groove is provided on the inner liner body 11 to accommodate the flange 30. However, the annular receiving groove creates stress concentration areas on the inner liner body 11. Under high temperature or high pressure conditions, these stress concentration areas may become weak points in the inner liner, leading to local deformation or damage. To avoid this problem, this technical solution eliminates the need for an annular receiving groove on the inner liner body 11, thus ensuring a smooth surface without stress concentration areas. Specifically, the reinforcing layer 20 has an integrally connected clamping part 22 at one end facing the outer liner opening structure 12. A clamping gap 21 is formed between the clamping part 22 and the inner liner body 11. The inner liner flange 30 includes an integrally connected base 31 and flange 32. The flange 32 is fitted onto the outer liner opening structure 12, and the base 31 is at least partially embedded in the clamping gap 21 and is fitted against the inner liner body 11 and the reinforcing layer 20. The base 31 is at least partially sandwiched between the tank body 11 and the reinforcing layer 20, thereby connecting the tank flange 30 to the inner tank body 10. This connection eliminates the need for welding points between the base 31 and the inner tank body 10, preventing leaks in the water heater inner tank 100. Furthermore, the outer surface of the base 31 is flush with the outer surface of the tank body 11, ensuring the flatness of the reinforcing layer 20 and preventing any protrusions, thus guaranteeing the surface flatness and smoothness of the water heater inner tank 100.

[0033] In summary, the inner tank 100 of this water heater does not require an annular receiving groove on the tank body 11. Instead, a clamping part 22 is provided at one end of the reinforcing layer 20 facing the outward-flaring structure 12 of the tank opening. A clamping gap 21 is formed between the clamping part 22 and the tank body 11. The base 31 of the tank opening flange 30 is then clamped within this gap 21. This not only achieves a seamless connection between the tank opening flange 30 and the inner tank body 10, but also maintains the smoothness and continuity of the surface of the tank body 11. This prevents structural abrupt changes and stress concentration areas on the surface of the tank body 11, effectively avoiding deformation or damage caused by stress concentration and improving the stability and reliability of the inner tank under high temperature or high pressure conditions. Furthermore, the absence of structural abrupt changes on the surface of the tank body 11 results in relatively better structural strength and reduces the manufacturing cost of the tank body.

[0034] Reference Figure 2 and Figure 4In one embodiment of the inner tank 100 of this water heater, an adapter 40 is further included. The adapter 40 is sleeved on the outward-facing structure 12 of the tank opening, and the flange 32 covers the adapter 40 and is fixedly connected to it. The function of the adapter 40 is to realize the transition connection between the flange 32 and the outward-facing structure 12 of the tank opening. Furthermore, the adapter 40, sleeved on the outward-facing structure 12 of the tank opening, can provide additional support for the outward-facing structure 12 of the tank opening, enhancing the structural stability of the area of ​​the tank opening 13. This support helps to reduce the deformation of the outward-facing structure 12 of the tank opening under high temperature or high pressure conditions, further improving the overall stability of the inner tank.

[0035] Specific reference Figure 2 and Figure 5 The flange 32 includes an integrally connected first disc 321 and second disc 322. Both the first disc 321 and the second disc 322 are annularly arranged. The first disc 321 is located at one end of the base 31 facing the outward-facing structure 12 and is bent into place with the base 31. The second disc 322 is located at the end of the first disc 321 away from the base 31 and is bent into place with the first disc 321, and the second disc 322 faces away from the base 31. The flange 32 is an integrally formed structure, that is, the base 31, the first disc 321 and the second disc 322 are integrally connected. The end face of the second disc 322 fits against the outward-facing structure 12. An installation space is formed between the first disc 321, the second disc 322 and the outward-facing structure 12, and the adapter 40 is disposed within the installation space. The installation space formed by the first disc 321, the second disc 322, and the everted structure 12 provides a position for the installation of the adapter 40, ensuring that the adapter 40 can be accurately embedded and achieve a transition connection.

[0036] To facilitate the connection between the flange 32 and the adapter 40, the second disc body 322 has several first limiting through holes 323 arranged in a ring at intervals. The adapter 40 has several second limiting through holes 43 opposite to the first limiting through holes 323. The number and position of the second limiting through holes 43 match those of the first limiting through holes 323. Fasteners 324 are inserted into the first and second limiting through holes 323 to achieve a fixed connection between the flange 32 and the adapter 40. The fasteners 324 can be screws or rivets. The second and first limiting through holes 43 provide an accurate installation path for the fasteners 324, ensuring a tight and reliable connection between the flange 32 and the adapter 40.

[0037] The adapter 40 may include a first adapter 41 and a second adapter 42. Both the first adapter 41 and the second adapter 42 are fitted onto the outward-curving structure 12. The second adapter 42 can be an elastic element, positioned on top of the first adapter 41 and fitting snugly against the second disc 322. In this configuration, the first adapter 41 primarily serves as the transitional connection described above, while also providing a stable base for the second adapter 42. The second adapter 42, being an elastic element, can undergo elastic deformation under external force, thus providing cushioning and shock absorption. Furthermore, due to its elasticity, the second adapter 42 can better conform to the surfaces of the second disc 322 and the outward-curving structure 12, ensuring the sealing performance of the inner liner.

[0038] Reference Figure 4 and Figure 5 The outer side of the everted vent structure 12 may be provided with an annular groove 121 surrounding the vent 13. The adapter 40 is sleeved on the everted vent structure 12 and confined within the annular groove 121. The annular groove 121 is provided on the outer side of the everted vent structure 12 and surrounds the vent 13, which can provide a clear installation position and limiting structure for the adapter 40, so that the adapter 40 can be precisely limited during installation, preventing the adapter 40 from moving axially, thereby ensuring the stability and reliability of the adapter 40.

[0039] Furthermore, a limiting member 122 may be protruded on the outer side of the outward-facing structure 12 of the bladder opening, and a limiting groove 44 is provided on the adapter 40 for the limiting member 122 to be inserted. The limiting member 122 is embedded in the limiting groove 44, which can prevent the adapter 40 from moving in the radial direction, thereby further ensuring the stability and reliability of the adapter 40.

[0040] In this technical solution, the material of the inner liner flange 30 can be sheet metal or high-strength plastic. By setting the material of the inner liner flange 30 to sheet metal or high-strength plastic, the strength of the inner liner flange 30 is high. The inner liner flange 30 is installed in close contact with the inner liner body 10, ensuring the overall strength of the inner liner body 10 and preventing deformation of the inner liner body 10.

[0041] This utility model also provides a water heater, which includes a shell assembly, a heating assembly, and a water heater inner tank 100. The specific structure of the water heater inner tank 100 is the same as described in the above embodiment and will not be repeated here. The shell assembly has an installation cavity, the water heater inner tank 100 is disposed on the shell assembly and located in the installation cavity, and the heating assembly is disposed on the water heater inner tank 100, which can heat the water in the water heater inner tank 100 into hot water.

[0042] This water heater does not require an annular receiving groove on the tank body 11. Instead, a clamping part 22 is provided at one end of the reinforcing layer 20 facing the outward-flaring structure 12 of the tank opening. A clamping gap 21 is formed between the clamping part 22 and the tank body 11. The base 31 of the tank opening flange 30 is then clamped within the clamping gap 21. This not only achieves a weld-free connection between the tank opening flange 30 and the inner tank body 10, but also maintains the smoothness and continuity of the surface of the tank body 11. This prevents structural abrupt changes on the surface of the tank body 11 and eliminates stress concentration areas, effectively avoiding deformation or damage caused by stress concentration. This improves the stability and reliability of the inner tank under high temperature or high pressure conditions. Moreover, the absence of structural abrupt changes on the surface of the tank body 11 results in relatively better structural strength and reduces the manufacturing cost of the tank body.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water heater tank, characterized in that, include: The inner liner body includes an integrally connected liner body and an everted liner opening structure, wherein the everted liner opening structure surrounds and forms the liner opening, and the outer surface of the liner body is smoothly disposed. A reinforcing layer covers the outer periphery of the gallbladder body, and a clamping part is provided at one end of the reinforcing layer facing the gallbladder opening outward structure, and a clamping gap is formed between the clamping part and the gallbladder body; The inner liner flange includes an integrally connected base and a flange, the flange is sleeved on the outward-facing structure of the inner liner, and the base is at least partially embedded in the clamping gap and is fitted to the inner liner body and the reinforcing layer.

2. The water heater liner of claim 1, wherein, The inner tank of the water heater also includes an adapter, which is sleeved on the outward-facing structure of the tank opening, and the flange covers the adapter and is fixedly connected to the adapter.

3. The water heater liner of claim 2, wherein, The flange includes an integrally connected first disc body and a second disc body. The first disc body is disposed at one end of the base facing the outward-facing structure of the bladder opening and is bent into the base. The second disc body is disposed at one end of the first disc body away from the base and is bent into the first disc body. The second disc body is opposite to the orientation of the base. The end face of the second disc is fitted to the everted structure of the bile duct, and an installation space is formed between the first disc, the second disc, and the everted structure of the bile duct, and the adapter is disposed within the installation space.

4. The water heater liner of claim 3, wherein, The second disk body is provided with a plurality of first limiting through holes, which are arranged in a ring at intervals on the second disk body; The adapter has several second limiting through holes that are opposite to the first limiting through hole. Fasteners are inserted into the first limiting through hole and the second limiting through hole to achieve a fixed connection between the flange and the adapter.

5. The water heater liner of claim 2, wherein, The adapter includes a first adapter and a second adapter. Both the first adapter and the second adapter are fitted onto the everted structure of the duct opening. The second adapter is an elastic element and is disposed on the top of the first adapter.

6. The water heater liner of claim 2, wherein, The outer side of the gallbladder opening eversion structure is provided with an annular groove surrounding the gallbladder opening, and the adapter is sleeved on the gallbladder opening eversion structure and confined within the annular groove.

7. The water heater liner of claim 2, wherein, The outer side of the everted structure of the gallbladder opening is provided with a limiting member, and the adapter is provided with a limiting groove for the limiting member to be inserted into, and the limiting member is embedded in the limiting groove.

8. The water heater inner tank of any one of claims 1 to 7, wherein, The reinforcing layer is made of wound fibers.

9. The water heater inner tank of any one of claims 1 to 7, wherein, The material of the flange at the duct opening is sheet metal or high-strength plastic.

10. A water heater, characterized by include: A housing assembly having a mounting cavity within it; The water heater inner tank as described in any one of claims 1 to 9, wherein the water heater inner tank is disposed on the housing assembly and located within the mounting cavity; A heating element is disposed on the inner tank of the water heater.

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