End cover for water heater and water heater

Abstract

The utility model relates to domestic appliance technical field discloses a water heater end cover and water heater for water heater end cover including cover body and first reinforcing structure, cover body is used for covering the end opening of the shell of water heater, first reinforcing structure includes first reinforcing rib and second reinforcing rib, first reinforcing rib is annular, and a plurality of first reinforcing ribs are along the radial interval of cover body and set, and the reinforcing space is formed between two first reinforcing ribs, a plurality of second reinforcing ribs are arranged in each reinforcing space, and a plurality of second reinforcing ribs are along the peripheral direction interval arrangement of corresponding reinforcing space, and the second reinforcing rib of first reinforcing rib both sides is staggered arrangement. The water heater end cover can effectively disperse the stress of complete machine, reduces the situation of local stress concentration, and can avoid the deformation and top white situation caused by overpressure in the foaming stage.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an end cap for a water heater and a water heater. Background Technology

[0002] A water heater is a household or commercial electrical appliance used to heat water. Its core function is to heat cold water to the temperature set by the user using electricity, gas, solar energy or other energy sources to meet people's hot water needs for bathing, kitchen washing, heating and other purposes.

[0003] A water heater typically consists of a left end cap, an outer shell, a right end cap, and an inner tank assembly. The inner tank assembly is housed within the outer shell, with the left and right end caps sealing the left and right openings of the outer shell, respectively. During the water heater assembly stage, the left end cap provides support for the entire inner tank assembly; during the foaming stage, it also seals the foaming material. Therefore, the left end cap itself needs sufficient strength to support the inner tank assembly and prevent deformation under foaming pressure. Insufficient strength in the left end cap may lead to stress concentration under pressure, causing deformation and whitening at the top, resulting in a decline in its appearance quality. In severe cases, it can even increase safety hazards and reduce the lifespan of the entire water heater.

[0004] To ensure that the left end cover has sufficient strength to support the inner tank assembly and withstand the foaming pressure, the wall thickness of the left end cover is usually designed to be very thick in related technologies. This increases material costs and the weight of the left end cover, resulting in a heavier overall water heater. This makes it inconvenient for operators to install and poses safety hazards when mounted on the wall.

[0005] Therefore, there is an urgent need to propose an end cap for a water heater and a water heater in order to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an end cap for a water heater and a water heater, which can reduce the amount of materials used and lower material costs while ensuring the structural strength of the end cap and ensuring the safety of the water heater.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An end cap for a water heater, comprising:

[0009] The cover body is used to seal the end opening of the outer casing of the water heater;

[0010] The first reinforcing structure includes a first reinforcing rib and a second reinforcing rib. The first reinforcing rib is annular, and a plurality of the first reinforcing ribs are arranged at radial intervals along the cover body. A reinforcing space is formed between two adjacent first reinforcing ribs. A plurality of second reinforcing ribs are arranged in each reinforcing space, and the plurality of second reinforcing ribs are arranged at circumferential intervals along the corresponding reinforcing space. The second reinforcing ribs located on both sides of the first reinforcing rib are staggered.

[0011] As a preferred embodiment of the end cap for a water heater provided by this utility model, the second reinforcing rib is a strip rib;

[0012] Alternatively, the second reinforcing rib may be an arc-shaped rib;

[0013] Alternatively, the second reinforcing rib may be an S-shaped rib.

[0014] As a preferred embodiment of the end cap for water heaters provided by this utility model, the thickness of the first reinforcing rib is 0.8mm to 1.0mm; and / or the thickness of the second reinforcing rib is 0.8mm to 1.0mm.

[0015] As a preferred embodiment of the end cap for a water heater provided by this utility model, the thickness of the second reinforcing rib gradually increases along the direction close to the center of the first reinforcing rib;

[0016] And / or, the thickness of the second reinforcing rib gradually decreases in the direction away from the cover body;

[0017] And / or, the thickness of the first reinforcing rib gradually decreases in the direction away from the cover body;

[0018] And / or, the thickness of the first reinforcing rib disposed near the center of the circle is greater than the thickness of the first reinforcing rib disposed away from the center of the circle.

[0019] As a preferred embodiment of the end cap for water heaters provided by this utility model, the connection position of the first reinforcing rib and the second reinforcing rib adopts an arc-shaped transition.

[0020] As a preferred embodiment of the end cap for water heaters provided by this utility model, a second reinforcing rib is also provided between the outermost first reinforcing rib and the edge of the cap body.

[0021] As a preferred embodiment of the end cap for a water heater provided by this utility model, a buffer pad layer is provided between the inner tank of the water heater and the cap body, a first positioning member is provided on the cap body, and a second positioning member is provided on the buffer pad layer, with the first positioning member and the second positioning member being inserted into each other.

[0022] As a preferred embodiment of the end cap for a water heater provided by this utility model, the cross-sectional shape of the first positioning member is circular or polygonal;

[0023] And / or, the number of the first positioning elements is at least two, and the at least two first positioning elements are arranged at circumferential intervals along the cover body;

[0024] And / or, the first positioning element is a hollow structure.

[0025] As a preferred embodiment of the end cap for water heater provided by this utility model, the number of the first reinforcing structures is at least two, and the at least two first reinforcing structures are spaced apart along the length direction of the cap body, and a second reinforcing structure is also provided between two adjacent first reinforcing structures.

[0026] As a preferred embodiment of the end cap for water heaters provided by this utility model, the second reinforcing structure includes a plurality of third reinforcing ribs arranged at intervals along the width direction of the cap body, and the two ends of each third reinforcing rib are respectively connected to the first reinforcing rib on the corresponding side.

[0027] As a preferred embodiment of the end cap for water heaters provided by this utility model, the third reinforcing rib is a strip-shaped rib; or the third reinforcing rib is an arc-shaped rib.

[0028] As a preferred embodiment of the end cap for a water heater provided by this utility model, the cap body includes a main body surface and an outer ring surface surrounding the main body surface. The first reinforcing structure and the second reinforcing structure are both disposed on the main body surface, and a third reinforcing structure is also disposed on the outer ring surface.

[0029] As a preferred embodiment of the end cap for water heater provided by this utility model, the third reinforcing structure includes a fourth reinforcing rib and a fifth reinforcing rib. The fourth reinforcing rib is ring-shaped and is arranged around the main body surface. A plurality of the fifth reinforcing ribs are arranged at intervals along the circumference of the outer ring surface and intersect with the fourth reinforcing rib.

[0030] This utility model also provides a water heater, including a shell, an inner tank, and an end cap for the water heater as described above, wherein the inner tank is housed in the shell, and the end cap for the water heater is used to seal the end opening of the shell.

[0031] The beneficial effects of this utility model are as follows:

[0032] The water heater end cap provided by this utility model has multiple annular first reinforcing ribs and second reinforcing ribs in the reinforcing space formed by the multiple first reinforcing ribs. The second reinforcing ribs on both sides of the first reinforcing ribs are staggered to form multiple support points on the water heater end cap. When the water heater end cap is subjected to external impact, these support points can effectively disperse the impact force, reduce local stress concentration, improve the overall structural strength of the water heater end cap, and avoid deformation or whitening due to insufficient strength when subjected to foaming pressure.

[0033] The water heater provided by this utility model, by applying the above-mentioned end cap for water heaters, can effectively disperse the stress of the whole machine, reduce the local stress concentration, and avoid deformation and whitening caused by excessive pressure during the foaming stage, thereby ensuring the appearance quality of the entire water heater. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the end cap for a water heater provided in Embodiment 1 of this utility model;

[0036] Figure 2 yes Figure 1 A magnified view of a portion at point A;

[0037] Figure 3 This is a schematic diagram of the structure of the end cap for a water heater provided in Embodiment 2 of this utility model.

[0038] Figure label:

[0039] 10. Cover body; 11. Main body surface; 12. Outer ring surface; 13. Connecting skirt edge; 130. Notch;

[0040] 20. First reinforcing structure; 201. Reinforcing space; 2011. First reinforcing space; 2012. Second reinforcing space; 2013. Third reinforcing space; 21. First reinforcing rib; 211. First annular rib; 212. Second annular rib; 213. Third annular rib; 22. Second reinforcing rib;

[0041] 30. First positioning component;

[0042] 40. Second reinforcing structure; 41. Third reinforcing rib;

[0043] 50. Third reinforcing structure; 51. Fourth reinforcing rib; 52. Fifth reinforcing rib. Detailed Implementation

[0044] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0045] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0047] In this invention, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0048] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0049] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0050] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct orientation but can also be understood as the lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0051] Example 1

[0052] Figure 1 A schematic diagram of the structure of the end cap for a water heater provided in this embodiment is shown. Figure 1 As shown, this embodiment provides a water heater. In some embodiments, the water heater may be an electric water heater.

[0053] Specifically, the water heater provided in this embodiment includes an outer shell, an inner tank, and an end cap for the water heater. The outer shell has a receiving chamber, and the inner tank is housed within this chamber. The end cap for the water heater seals the end opening of the outer shell, thereby providing both housing and protection for the inner tank. Optionally, the water heater in this embodiment is a single-tank water heater, meaning that the number of inner tanks within the outer shell is one.

[0054] Figure 2 It shows Figure 1 A schematic diagram of a local structure. (For example...) Figure 2 and combined Figure 1 As shown, the end cap for the water heater includes a cap body 10 and a first reinforcing structure 20. The cap body 10 is used to seal the end opening of the water heater's outer shell. The first reinforcing structure 20 includes a first reinforcing rib 21 and a second reinforcing rib 22. The first reinforcing rib 21 is annular, and multiple first reinforcing ribs 21 are arranged at radial intervals along the cap body 10. A reinforcing space 201 is formed between two adjacent first reinforcing ribs 21. Multiple second reinforcing ribs 22 are provided in each reinforcing space 201, and the multiple second reinforcing ribs 22 are arranged at circumferential intervals along the corresponding reinforcing space 201. The second reinforcing ribs 22 located on both sides of the first reinforcing rib 21 are staggered.

[0055] The water heater end cap provided in this embodiment has multiple annular first reinforcing ribs 21 and second reinforcing ribs 22 in the reinforcing space 201 formed by the multiple first reinforcing ribs 21. The second reinforcing ribs 22 on both sides of the first reinforcing ribs 21 are staggered to form multiple support points on the water heater end cap. When the water heater end cap is subjected to external impact, these support points can effectively disperse the impact force, reduce local stress concentration, improve the overall structural strength of the water heater end cap, and avoid deformation or whitening due to insufficient strength when subjected to foaming pressure.

[0056] In some embodiments, the second reinforcing rib 22 is a strip rib, which has a simple structure and is easy to process and manufacture.

[0057] In some embodiments, the second stiffener 22 is an arc-shaped stiffener. The arc-shaped stiffener can match multi-directional loads. Under the same load, the arc-shaped stiffener has a smaller deformation, higher structural stability, and a more aesthetically pleasing shape.

[0058] In some embodiments, the second reinforcing rib 22 is an S-shaped rib, which can effectively transfer stress along a smooth curved path, thereby avoiding stress concentration on the cover body 10.

[0059] like Figure 1 As shown, a second reinforcing rib 22 is provided between the outermost first reinforcing rib 21 and the edge of the cover body 10. By providing the first reinforcing rib 21 and the second reinforcing rib 22, the entire surface of the cover body 10 can be evenly covered with reinforcing ribs, thereby further improving the structural strength and deformation resistance of the end cover for water heaters.

[0060] Optionally, the second reinforcing ribs 22 located on both sides of the outermost first reinforcing rib 21 are staggered to further increase the number of support points and improve the structural strength of the end cover for the water heater.

[0061] For example, such as Figure 1As shown, in this embodiment, there are three first reinforcing ribs 21. For ease of description, the three first reinforcing ribs 21 are respectively designated as first annular rib 211, second annular rib 212, and third annular rib 213 along the direction from the center O of the cover body 10 towards the outer edge of the cover body 10. The reinforcing space 201 formed between the first annular rib 211 and the second annular rib 212 is designated as the first reinforcing space 2011, the reinforcing space 201 formed between the second annular rib 212 and the third annular rib 213 is designated as the second reinforcing space 2012, and the reinforcing space 201 formed between the third annular rib 213 and the edge of the cover body 10 is designated as the third reinforcing space 2013. In this embodiment, the second reinforcing rib 22 provided in the first reinforcing space 2011 is a strip rib, the second reinforcing rib 22 provided in the second reinforcing space 2012 is an arc rib, and the second reinforcing rib 22 provided in the third reinforcing space 2013 is an S-shaped rib. This design can match the stress gradient on the cover body 10 to achieve the best reinforcement effect on the cover body 10, and can increase the diversity of the first reinforcing structure 20. Of course, this embodiment does not limit the number of the first reinforcing ribs 21 or the shape and arrangement of the second reinforcing ribs 22, and designers can adjust them according to actual product requirements.

[0062] It should be noted that in this embodiment, the outer contour of the end cap for the water heater is roughly circular, and the center O of the cap body 10 coincides with the center of the first reinforcing rib 21.

[0063] Optionally, the first reinforcing structure 20 is disposed on the inner side of the cover body 10 to ensure the aesthetic appearance of the end cover for the water heater. Specifically, the inner side of the cover body 10 refers to the side of the cover body 10 facing the inner tank, and the outer side of the cover body 10 refers to the side of the cover body 10 away from the inner tank.

[0064] To facilitate processing, the thickness of the second reinforcing rib 22 gradually decreases in the direction away from the cover body 10; the thickness of the first reinforcing rib 21 also gradually decreases in the direction away from the cover body 10. This design can, on the one hand, match the stress gradient on the cover body 10, and on the other hand, facilitate the demolding operation after the end cap of the water heater is injection molded.

[0065] In this embodiment, the thickness of the second reinforcing rib 22 is 0.8mm to 1.0mm; and / or the thickness of the first reinforcing rib 21 is 0.8mm to 1.0mm. Within this thickness range, the first reinforcing rib 21 and the second reinforcing rib 22 will not result in low structural strength of the water heater end cap due to excessive thinness, nor will they result in a reduced appearance at the connection point with the cap body 10 due to excessive thickness. For example, the thickness of the second reinforcing rib 22 can be 0.81mm, 0.82mm, 0.83mm, 0.84mm, 0.85mm, 0.86mm, 0.87mm, 0.88mm, 0.89mm, 0.90mm, 0.91mm, 0.92mm, 0.93mm, 0.94mm, 0.95mm, 0.96mm, 0.97mm, 0.98mm, or 0.99mm. The thickness of the first reinforcing rib 21 can be 0.81mm, 0.82mm, 0.83mm, 0.84mm, 0.85mm, 0.86mm, 0.87mm, 0.88mm, 0.89mm, 0.90mm, 0.91mm, 0.92mm, 0.93mm, 0.94mm, 0.95mm, 0.96mm, 0.97mm, 0.98mm, 0.99mm, etc. Of course, in other embodiments, the specific thicknesses of the second reinforcing rib 22 and the first reinforcing rib 21 are not limited to the above ranges, and designers can adjust them according to actual processing requirements.

[0066] Optionally, the thickness of the second reinforcing rib 22 gradually increases along the direction close to the center O; the thickness of the first reinforcing rib 21 located close to the center O is greater than the thickness of the first reinforcing rib 21 located away from the center O. This design can match the stress gradient on the cover body 10 to further improve its overall structural strength, and thinner second reinforcing ribs 22 and / or first reinforcing ribs 21 can be set at locations on the cover body 10 where the stress is less, thereby reducing material costs and also reducing the weight of the end cap for the water heater to a certain extent, facilitating the transportation and installation of the water heater.

[0067] Optionally, the connection between the first reinforcing rib 21 and the second reinforcing rib 22 is made with a curved surface transition. This design can avoid stress concentration caused by sharp corners at the connection between the first reinforcing rib 21 and the second reinforcing rib 22.

[0068] The water heater also includes a buffer pad layer, which is positioned between the cover body 10 and the inner tank. To ensure the installation accuracy between the cover body 10 and the buffer pad layer, a first positioning member 30 is provided on the cover body 10, and a second positioning member is provided on the buffer pad layer. The first positioning member 30 and the second positioning member are interlocked. By providing a first positioning member 30 on the cover body 10 that can interlock with the second positioning member on the buffer pad layer, precise assembly between the buffer pad layer and the end cap of the water heater can be achieved, so that the buffer pad layer achieves the best cushioning effect.

[0069] Optionally, the first positioning element 30 is hollow to reduce material costs to some extent and reduce the weight of the end cap for the water heater.

[0070] In this embodiment, the second positioning member has a positioning hole, and the first positioning member 30 is inserted into the positioning hole of the second positioning member. Of course, in other embodiments, the positioning hole can also be set in the first positioning member 30, and the second positioning member can be inserted into the positioning hole of the first positioning member 30, which can achieve the same effect. In this example, the cavity on the first positioning member 30 can serve as the positioning hole.

[0071] In some embodiments, the cross-sectional shape of the first positioning member 30 is polygonal. This design can prevent the buffer pad from rotating about the axis of the first positioning member 30 after the circular first positioning member 30 and the second positioning member are inserted and engaged, thereby affecting the positioning effect between the end cap of the water heater and the buffer pad.

[0072] In some embodiments, the cross-sectional shape of the first positioning member 30 can also be set to circular. In this example, to prevent relative rotation after the water heater end cap and buffer pad are assembled, the first positioning member 30 can be set to two, three, or even more, thereby improving the positioning effect between the two.

[0073] It should be noted that when the cross-sectional shape of the first positioning element 30 is polygonal, the designer may also set the first positioning element 30 to at least two according to the actual positioning requirements. This embodiment does not limit this.

[0074] Continue as Figure 1 and Figure 2As shown, in this embodiment, the end cap for the water heater is made of a modified composite material formed by polypropylene (PP) and 10% talc. The addition of talc significantly improves the rigidity and surface hardness of PP, making the material more robust and durable. It also enhances the stability of PP under long-term stress, reducing the risk of deformation. Furthermore, compared to the PS (polystyrene) material used in the prior art, PP + 10% talc has a lower material cost, greatly reducing the manufacturing cost of the end cap for the water heater. Of course, in other embodiments, designers can adjust the amount of talc filling according to actual processing requirements; this embodiment does not limit this. Exemplarily, the amount of talc filling can also be 5%, 6%, 7%, 8%, 9%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, etc.

[0075] In other embodiments, the end cap for the water heater can also be made of a modified composite material formed by polypropylene (PP) and 10% glass fiber (GF). GF is an inorganic filler with high rigidity and hardness. When combined with PP, it effectively reduces the shrinkage rate of PP while improving its strength, stiffness, temperature resistance, and flame retardant properties. This ensures the end cap has sufficient strength to stably support the inner tank and is less prone to deformation. Compared to the PS material used in the prior art, PP+10%GF has a lower material cost, significantly reducing the manufacturing cost of the end cap. Of course, in other embodiments, designers can adjust the amount of GF filling according to actual processing requirements; this embodiment does not limit this. For example, the amount of GF filling can also be 5%, 6%, 7%, 8%, 9%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, etc.

[0076] Continue as Figure 1 and Figure 2 As shown, multiple notches 130 are provided circumferentially along the connecting skirt 13. By providing notches 130 on the connecting skirt 13, deformation space can be provided for the water heater end cover when it is connected to the outer casing, thereby ensuring the overall appearance quality of the water heater and the roundness of the water heater end cover.

[0077] Example 2

[0078] Figure 3 A schematic diagram of the structure of the end cap for a water heater provided in this embodiment is shown. Figure 3As shown, this embodiment provides a water heater. The difference between this water heater and the water heater provided in Embodiment 1 is that in this embodiment, the number of inner tanks is two, that is, this water heater is a double-tank water heater.

[0079] Specifically, there are at least two first reinforcing structures 20, which are spaced apart along the length of the cover body 10. A second reinforcing structure 40 is also provided between two adjacent first reinforcing structures 20. In this embodiment, there are two first reinforcing structures 20, which correspond to the positions of the two inner tanks, to match the stress conditions and stress gradient on the end cover of the water heater.

[0080] Optionally, the second reinforcing structure 40 includes a plurality of third reinforcing ribs 41 spaced apart along the width direction of the cover body 10, with each third reinforcing rib 41 having its two ends connected to the corresponding first reinforcing rib 21. The cooperation between the first reinforcing structure 20 and the second reinforcing structure 40 allows the cover body 10 to be covered with reinforcing ribs, thereby further improving the structural strength and deformation resistance of the end cover for the water heater.

[0081] In some embodiments, the third reinforcing rib 41 is a strip rib, which has a simple structure and is easy to process.

[0082] In some embodiments, the third stiffener 41 is an arc-shaped stiffener. The arc-shaped stiffener can match multi-directional loads. Under the same load, the arc-shaped stiffener has a smaller deformation, higher structural stability, and a more aesthetically pleasing shape.

[0083] Continue as Figure 3 As shown, the cover body 10 includes a main surface 11 and an outer ring surface 12 surrounding the main surface 11. A first reinforcing structure 20 and a second reinforcing structure 40 are both disposed on the main surface 11, and a third reinforcing structure 50 is also disposed on the outer ring surface 12. Specifically, the third reinforcing structure 50 includes a fourth reinforcing rib 51 and a fifth reinforcing rib 52. The fourth reinforcing rib 51 is ring-shaped and surrounds the main surface 11. Multiple fifth reinforcing ribs 52 are arranged at intervals along the circumference of the outer ring surface 12 and intersect with the fourth reinforcing rib 51. The ring-shaped fourth reinforcing rib 51 forms a continuous reinforcing area around the outer periphery of the main surface 11, thereby more effectively dispersing the stress on the cover body 10 and reducing stress concentration. Furthermore, the intersecting fourth reinforcing ribs 51 and fifth reinforcing ribs 52 can match multi-directional loads, thus giving the end cover for the water heater a more stable structural performance.

[0084] In this embodiment, the connecting skirt 13 is connected to the end of the outer ring surface 12 away from the main body surface 11. The specific structure of the connecting skirt 13 in this embodiment is the same as that in Embodiment 1, and will not be described again in this embodiment.

[0085] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. An end cover for a water heater, characterized by, include: Cover body (10) for sealing the end opening of the outer shell of the water heater; The first reinforcing structure (20) includes a first reinforcing rib (21) and a second reinforcing rib (22). The first reinforcing rib (21) is annular. Multiple first reinforcing ribs (21) are arranged radially at intervals along the cover body (10). A reinforcing space (201) is formed between two adjacent first reinforcing ribs (21). Multiple second reinforcing ribs (22) are provided in each reinforcing space (201). The multiple second reinforcing ribs (22) are arranged circumferentially at intervals along the corresponding reinforcing space (201). The second reinforcing ribs (22) located on both sides of the first reinforcing rib (21) are staggered.

2. The end cover for a water heater of claim 1, wherein The second reinforcing rib (22) is a strip rib; Alternatively, the second reinforcing rib (22) may be an arc-shaped rib; Alternatively, the second reinforcing rib (22) may be an S-shaped rib.

3. The end cover for a water heater of claim 1, wherein The thickness of the first reinforcing rib (21) is 0.8 mm to 1.0 mm; and / or the thickness of the second reinforcing rib (22) is 0.8 mm to 1.0 mm.

4. The end cover for a water heater of claim 1, wherein The thickness of the second reinforcing rib (22) gradually increases along the direction close to the center O of the first reinforcing rib (21); And / or, the thickness of the second reinforcing rib (22) gradually decreases in the direction away from the cover body (10); And / or, the thickness of the first reinforcing rib (21) gradually decreases in the direction away from the cover body (10); And / or, the thickness of the first reinforcing rib (21) located near the center O is greater than the thickness of the first reinforcing rib (21) located away from the center O.

5. The end cover for a water heater of claim 1, wherein The connection between the first reinforcing rib (21) and the second reinforcing rib (22) is made of an arc-shaped transition.

6. The end cover for a water heater according to any one of claims 1 to 5, wherein A second reinforcing rib (22) is provided between the outermost first reinforcing rib (21) and the outer edge of the cover body (10).

7. The end cover for a water heater of claim 6, wherein, A buffer pad is provided between the inner tank of the water heater and the cover body (10). A first positioning member (30) is provided on the cover body (10), and a second positioning member is provided on the buffer pad. The first positioning member (30) and the second positioning member are inserted into each other.

8. The end cover for a water heater of claim 7, wherein, The cross-sectional shape of the first positioning element (30) is circular or polygonal; And / or, the number of the first positioning elements (30) is at least two, and at least two of the first positioning elements (30) are arranged at circumferential intervals along the cover body (10); And / or, the first positioning element (30) is a hollow structure.

9. The end cover for a water heater according to any one of claims 1 to 5, wherein The number of the first reinforcing structure (20) is at least two, and the at least two first reinforcing structures (20) are spaced apart along the length direction of the cover body (10), and a second reinforcing structure (40) is also provided between two adjacent first reinforcing structures (20).

10. The end cover for a water heater of claim 9, wherein, The second reinforcing structure (40) includes a plurality of third reinforcing ribs (41) spaced apart along the width direction of the cover body (10), and the two ends of each third reinforcing rib (41) are respectively connected to the first reinforcing rib (21) on the corresponding side.

11. The end cover for a water heater of claim 10, wherein, The third reinforcing rib (41) is a strip-shaped rib; or the third reinforcing rib (41) is an arc-shaped rib.

12. The end cover for a water heater of claim 9, wherein, The cover body (10) includes a main surface (11) and an outer ring surface (12) surrounding the main surface (11). The first reinforcing structure (20) and the second reinforcing structure (40) are both disposed on the main surface (11), and a third reinforcing structure (50) is also disposed on the outer ring surface (12).

13. The end cover for a water heater of claim 12, wherein, The third reinforcing structure (50) includes a fourth reinforcing rib (51) and a fifth reinforcing rib (52). The fourth reinforcing rib (51) is annular and is arranged around the main body surface (11). A plurality of fifth reinforcing ribs (52) are arranged at intervals along the circumference of the outer ring surface (12) and intersect with the fourth reinforcing rib (51).

14. A water heater, characterized by The device includes an outer shell, an inner tank, and an end cap for a water heater as described in any one of claims 1 to 13, wherein the inner tank is housed within the outer shell, and the end cap for the water heater is used to seal the end opening of the outer shell.

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