End cap structure and water heater

Abstract

The utility model relates to domestic appliance technical field discloses an end cover structure and water heater. The end cover structure includes the cover body and first reinforcing rib, is provided with the installation mouth of the installation of the inner bag mouth of water heater on the cover body, and the side of cover body is away from the inner bag and is equipped with overflow hole, first reinforcing rib sets up in the side of cover body to the inner bag, and the projection of first reinforcing rib on the cover body at least part surrounds the projection of overflow hole on the cover body around. The end cover structure can avoid the phenomenon of top white because of foaming pressure around the overflow hole, thereby ensuring the appearance quality of finished product water heater.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an end cap structure 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 an end cap, an outer shell, and an inner tank assembly. The inner tank assembly is housed within the outer shell, and the end cap seals the end openings of the outer shell. To prevent water droplets from falling onto the water heater and forming into the end cap, which could then seep into the end cap through the gap between the end cap and the service cover, affecting the performance of components mounted on the end cap, an overflow hole is usually provided on the end cap. Water droplets on the water heater can then drain through this overflow hole. However, during the foaming and assembly process, the portion of the end cap around the overflow hole is prone to whitening under foaming pressure, affecting the appearance quality of the finished water heater.

[0004] Therefore, there is an urgent need to propose an end cap structure and a water heater to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an end cap structure and a water heater that can prevent the end cap from turning white around the overflow hole due to foaming pressure, thereby ensuring the appearance quality of the finished water heater.

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

[0007] An end cap structure for a water heater, the end cap structure comprising:

[0008] The cover body has an installation port for installing the inner tank of the water heater, and an overflow hole is provided on the side of the cover body away from the inner tank.

[0009] A first reinforcing rib is disposed on the side of the cover body facing the inner liner, and the projection of the first reinforcing rib on the cover body at least partially surrounds the projection of the overflow hole on the cover body.

[0010] As a preferred embodiment of the end cap structure provided by this utility model, the first reinforcing rib includes a first strip rib and / or an arc rib.

[0011] As a preferred embodiment of the end cap structure provided by this utility model, the thickness of the first reinforcing rib gradually decreases along the direction away from the overflow hole.

[0012] As a preferred embodiment of the end cap structure provided by this utility model, the thickness of the first reinforcing rib is 0.7mm to 1.0mm.

[0013] As a preferred embodiment of the end cap structure provided by this utility model, the cap body includes:

[0014] An annular inner wall surface, the annular inner wall surface being configured to form the mounting opening;

[0015] The first annular end face is circumferentially arranged around the mounting port;

[0016] The second annular end face is circumferentially arranged around the first annular end face, and the first annular end face and the second annular end face are spaced apart in the axial direction of the first annular end face. The overflow hole is opened on the outer side of the second annular end face, and the first reinforcing rib is arranged on the inner side of the second annular end face.

[0017] An annular connecting surface, the two ends of which are respectively connected to the first annular end face and the second annular end face, and the annular connecting surface encloses an electrical compartment for installing a power board and a thermostat.

[0018] As a preferred embodiment of the end cap structure provided by this utility model, the end cap structure further includes a second reinforcing rib, and at least two second reinforcing ribs are circumferentially spaced on the annular connecting surface; and / or

[0019] The end cap structure further includes a third reinforcing rib, which is disposed on the first annular end face and surrounds the mounting opening.

[0020] As a preferred embodiment of the end cap structure provided by this utility model, a first mounting groove extending along the axial direction of the mounting opening is provided on the cavity wall of the electrical compartment; the first mounting groove is used to mount the power board; and / or

[0021] A second mounting slot is provided on the cavity wall of the electrical compartment, and the second mounting slot is used to install the thermostat of the water heater.

[0022] As a preferred embodiment of the end cap structure provided by this utility model, at least one limiting hole is provided around the first mounting groove in the electrical appliance compartment, a limiting member is inserted through the limiting hole, and the end portion of the limiting member abuts against the top of the power board.

[0023] As a preferred embodiment of the end cap structure provided by this utility model, the cap body is provided with a wire clamping structure, which is used to fix the power cord; and / or

[0024] The cover body is provided with a detection hole, which is used for the insertion of detection elements.

[0025] This utility model also provides a water heater, including a shell, an inner tank, and an end cap structure as described above, wherein the inner tank is housed in the shell, and the end cap structure is used to seal the end opening of the shell.

[0026] The beneficial effects of this utility model are as follows:

[0027] The end cap structure provided by this utility model has an overflow hole on the cap body. When water vapor in the external environment falls on the water heater and forms water droplets, the water droplets can flow along the outer surface of the cap body to the overflow hole and then be discharged through the overflow hole, thereby preventing water droplets from seeping into the cap body and affecting the performance of various components. By setting the first reinforcing rib, the structural strength of the cap body near the overflow hole can be improved, thereby preventing the end cap structure from whitening near the overflow hole under foaming pressure, and thus ensuring the appearance quality of the entire end cap structure.

[0028] The water heater provided by this utility model, by applying the above-mentioned end cap structure, can ensure the appearance quality of the finished water heater and improve the user experience. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is one of the structural schematic diagrams of the end cap structure provided in this embodiment of the utility model;

[0031] Figure 2 yes Figure 1 A schematic diagram of a partial structure;

[0032] Figure 3 This is the second schematic diagram of the end cap structure provided in this embodiment of the utility model;

[0033] Figure 4 yes Figure 3 A magnified view of a portion at point A.

[0034] Figure label:

[0035] 100. End cap structure; 1001. Mounting port; 1002. Electrical compartment; 1003. Limiting groove; 1004. Inspection hole;

[0036] 10. Cover body; 101. First mounting groove; 102. Second mounting groove; 103. Limiting hole; 11. Annular inner wall surface; 12. First annular end face; 13. Second annular end face; 131. Overflow hole; 132. Protrusion; 14. Annular connecting surface; 15. First annular limiting rib; 151. First drainage hole; 16. Pressure line structure;

[0037] 20. First reinforcing rib; 21. First strip rib; 22. Arc-shaped rib;

[0038] 30. Second reinforcing rib; 40. Third reinforcing rib. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Figure 1 One of the structural schematic diagrams of the end cap structure 100 provided in this embodiment is shown. For example... Figure 1 As shown, this embodiment provides a water heater, which includes an outer shell (not shown in the figure), an inner tank (not shown in the figure), and an end cap structure 100. The outer shell has a receiving chamber, and the inner tank is received in the receiving chamber of the outer shell. The end cap structure 100 includes a cap body 10, and the cap body 10 has an installation port 1001. The cap body 10 covers the end opening of the receiving chamber, and the inlet of the inner tank is installed at the installation port 1001, thereby realizing the receiving, limiting and protecting of the inner tank.

[0047] Furthermore, the water heater also includes a maintenance cover (not shown in the figure). An electrical compartment 1002 is located on the side of the cover body 10 away from the inner tank. The electrical compartment 1002 contains a first mounting groove 101 and a second mounting groove 102. The first mounting groove 101 is used to install the power supply board, and the second mounting groove 102 is used to install the water heater's thermostat. The maintenance cover seals the opening of the electrical compartment 1002 to shield and protect the power supply board and thermostat. The end cap structure 100 and the maintenance cover together form the cover assembly for the water heater.

[0048] For ease of description, the side of the cover body 10 facing the inner liner is defined as the inner side of the cover body 10, and the side of the cover body 10 away from the inner liner is defined as the outer side of the cover body 10. That is to say, the electrical compartment 1002 is located on the outer side of the cover body 10.

[0049] Optionally, the maintenance cover is detachably mounted on the cover body 10 to facilitate disassembly by operators for inspection and maintenance of components (power board and thermostat) installed in the electrical compartment 1002. In this embodiment, the maintenance cover is provided with a buckle, and the cover body 10 is provided with a slot. The buckle and the slot engage to achieve a detachable connection between the maintenance cover and the cover body 10. The structure is simple, easy to assemble and disassemble, and the connection is secure. Of course, in other embodiments, the buckle can be provided on the cover body 10, and the slot can be provided on the maintenance cover, achieving the same effect. Furthermore, this embodiment does not limit the detachable connection method between the maintenance cover and the cover body 10; they can also be connected by screws, plug-in connections, etc.

[0050] Figure 2 It shows Figure 1 A schematic diagram of a local structure. (For example...) Figure 2 and combined Figure 1 As shown, a first annular limiting rib 15 is provided inside the electrical chamber 1002 of the cover body 10. A limiting groove 1003 is formed between the first annular limiting rib 15 and the cavity wall of the electrical chamber 1002. The outer peripheral edge of the maintenance cover extends axially to form a second annular limiting rib, which is inserted into the limiting groove 1003. This arrangement can improve the waterproof sealing performance of the electrical chamber 1002.

[0051] Optionally, an overflow hole 131 is provided on the side of the cover body 10 away from the inner tank. When water vapor from the external environment falls on the water heater and forms water droplets, the water droplets can flow along the outer surface of the cover body 10 and / or the outer surface of the maintenance cover to the overflow hole 131, and then be discharged through the overflow hole 131, thereby preventing water droplets from seeping into the electrical compartment 1002 from the gap between the cover body 10 and the maintenance cover and affecting the performance of the components.

[0052] It should be noted that after the water heater is installed on the wall, the overflow hole 131 is located at the bottom of the whole structure to ensure that the water falling on the water heater can be discharged through the overflow hole 131.

[0053] Optionally, the first annular limiting rib 15 is provided with a first drain hole 151 communicating with the electrical chamber 1002, and the first drain hole 151 is directly opposite the overflow hole 131. The second annular limiting rib is provided with a second drain hole directly opposite the overflow hole 131. Even if water droplets seep into the electrical chamber 1002 from the gap between the cover body 10 and the maintenance cover, the water droplets can be discharged from the overflow hole 131 after passing through the first drain hole 151 and the second drain hole in sequence, further ensuring the safety of the entire water heater during use.

[0054] Figure 3 The second schematic diagram of the end cap structure 100 provided in this embodiment is shown. Figure 4 It shows Figure 3 A magnified view of a portion at point A. (See attached image.) Figures 3-4 and combined Figure 2 As shown, the end cap structure 100 also includes a first reinforcing rib 20, which is disposed on the inner side of the cap body 10, and the projection of the first reinforcing rib 20 on the cap body 10 at least partially surrounds the projection of the overflow hole 131 on the cap body 10. By providing the first reinforcing rib 20, the structural strength of the cap body 10 near the overflow hole 131 can be improved, thereby preventing the end cap structure 100 from whitening near the overflow hole 131 under foaming pressure, and thus ensuring the appearance quality of the entire end cap structure 100.

[0055] Specifically, the cover body 10 includes an annular inner wall 11, a first annular end face 12, a second annular end face 13, and an annular connecting surface 14. The annular inner wall 11 forms the aforementioned mounting opening 1001. The first annular end face 12 is circumferentially arranged around the mounting opening 1001. The second annular end face 13 is circumferentially arranged around the first annular end face 12, and the first annular end face 12 and the second annular end face 13 are spaced apart along the axial direction of the first annular end face 12. The two ends of the annular connecting surface 14 are respectively connected to the first annular end face 12 and the second annular end face 13. The annular connecting surface 14 forms the aforementioned electrical chamber 1002, and the side of the annular connecting surface 14 closest to the second annular end face 13 forms the opening of the electrical chamber 1002. That is to say, a portion of the outer surface of the second annular end face 13 and the outer surface of the maintenance cover together form the appearance surface of the water heater cover assembly. Among them, the overflow hole 131 is opened on the outer side of the second annular end face 13, and the first reinforcing rib 20 is disposed on the inner side of the second annular end face 13.

[0056] like Figure 2 and Figure 4As shown, in order to ensure that the cover body 10 has a uniform wall thickness at all positions, a protrusion 132 is provided on the inner side of the second annular end face 13 at the position corresponding to the overflow hole 131, so that the stress distribution of the cover body 10 is more uniform when it is subjected to external force impact, and it is less likely to cause local deformation or cracking.

[0057] In some embodiments, the first reinforcing rib 20 is a first strip rib 21, and the number of first reinforcing ribs 20 is set to at least two, with at least two first strip ribs 21 arranged circumferentially at intervals along the second annular end face 13. The structure of the first strip rib 21 is relatively simple and easy to process and manufacture.

[0058] In some embodiments, the first reinforcing rib 20 is an arc-shaped rib 22, with its two ends connected to the protrusion 132 and the edge of the second annular end face 13, respectively. The arc-shaped rib 22 can accommodate multi-directional loads, exhibiting smaller deformation under the same load, higher structural stability, and a more aesthetically pleasing shape. In this example, at least two arc-shaped ribs 22 are provided, spaced apart circumferentially or radially along the second annular end face 13, to further enhance the structural strength of the cover body 10.

[0059] like Figure 2 and Figure 4 As shown, in this embodiment, the first reinforcing rib 20 includes a plurality of first strip ribs 21 and two arc ribs 22. The two arc ribs 22 are symmetrically arranged on both sides of the protrusion 132, and the two ends of each arc rib 22 are respectively connected to the edge of the protrusion 132 and the edge of the second annular end face 13. The first strip ribs 21 extend radially along the second annular end face 13, and the plurality of first strip ribs 21 are arranged circumferentially at intervals along the second annular end face 13. The two ends of some first strip ribs 21 are respectively connected to the edge of the arc ribs 22 and the edge of the second annular end face 13, and the two ends of some first strip ribs 21 are respectively connected to the edge of the protrusion 132 and the edge of the second annular end face 13. The first strip ribs 21 and the arc ribs 22 work together to enhance the structural strength of the cover body 10, and can match the stress gradient around the overflow hole 131, optimize the stress distribution of the first reinforcing rib 20, and reduce stress concentration.

[0060] Optionally, the thickness of the first reinforcing rib 20 gradually decreases in the direction away from the overflow hole 131 to further match the stress gradient around the overflow hole 131, optimize the stress distribution of the first reinforcing rib 20, and reduce stress concentration. In this embodiment, the thickness of the first reinforcing rib 20 is 0.7 mm to 1.0 mm. Within this thickness range, the first reinforcing rib 20 will not result in low structural strength due to excessive thinness, nor will it result in a shrinkage in appearance at its connection with the second annular end face 13 due to excessive thickness. For example, the thickness of the end of the first reinforcing rib 20 away from the overflow hole 131 (specifically, away from the protrusion 132) can be 0.70mm, 0.72mm, 0.74mm, 0.75mm, 0.76mm, 0.78mm, 0.80mm, 0.82mm, 0.84mm, 0.85mm, 0.86mm, 0.88mm, 0.90mm, etc.; the thickness of the end of the first reinforcing rib 20 near the overflow hole 131 (specifically, away from the protrusion 132) can be 0.80mm, 0.82mm, 0.84mm, 0.85mm, 0.86mm, 0.88mm, 0.90mm, 0.92mm, 0.94mm, 0.95mm, 0.96mm, 0.98mm, 1.0mm, etc. Of course, in other embodiments, the specific thickness of the first reinforcing rib 20 is not limited to the above ranges, and designers can adjust it according to actual processing requirements.

[0061] like Figure 1 As shown, the end cap structure 100 also includes second reinforcing ribs 30, with at least two second reinforcing ribs 30 spaced apart circumferentially on the annular connecting surface 14. Specifically, in this embodiment, the inner side of the annular connecting surface 14 is recessed outward, thereby forming a protruding structure on the outer side of the annular connecting surface 14, which is the second reinforcing rib 30. This arrangement not only improves the overall structural strength of the cap body 10, but also ensures that the cap body 10 has a uniform wall thickness at all locations, thus making the stress distribution more uniform when the cap body 10 is subjected to external impact, and reducing the likelihood of local deformation or breakage.

[0062] In this embodiment, the width of the second reinforcing rib 30 is 15mm to 30mm. Exemplarily, the width of the second reinforcing rib 30 can be 15.5mm, 16.0mm, 16.5mm, 17.0mm, 17.5mm, 18.0mm, 18.5mm, 19.0mm, 19.5mm, 20.0mm, 20.5mm, 21.0mm, 21.5mm, 22.0mm, 22.5mm, 23.0mm, 23.5mm, 24.0mm, 24.5mm, etc. Of course, in other embodiments, the width of the second reinforcing rib 30 is not limited to the above ranges, and designers can adjust the width of the second reinforcing rib 30 according to actual processing requirements.

[0063] Optionally, the width of the second reinforcing rib 30 gradually increases from the first annular end face 12 to the second annular end face 13, meaning that the cross-sectional shape of the second reinforcing rib 30 is approximately a fan-shaped structure. This design can match the stress gradient on the annular connecting surface 14, optimize the stress distribution of the second reinforcing rib 30, and reduce stress concentration.

[0064] like Figure 3 As shown, the end cap structure 100 also includes a third reinforcing rib 40, which is disposed on the first annular end face 12 and surrounds the mounting opening 1001. By providing the third reinforcing rib 40, the structural strength of the cap body 10 around the mounting opening 1001 can be ensured, thereby further improving the overall strength of the cap body 10 and preventing whitening and deformation under foaming pressure. Specifically, the third reinforcing rib 40 includes a plurality of second strip-shaped ribs, which are arranged at intervals along the circumference of the mounting opening 1001. The structure is simple and easy to manufacture.

[0065] Continue as Figure 1 and Figure 2 As shown, in this embodiment, the first mounting groove 101 extends along the axial direction of the mounting opening 1001, meaning that the power board is inserted into the first mounting groove 101 along the axial direction of the mounting opening 1001. This arrangement can save the installation space of the power board and improve the space utilization rate within the electrical room 1002.

[0066] Optionally, at least one limiting hole 103 is provided around the first mounting groove 101 within the electrical compartment 1002. A limiting member passes through the limiting hole 103, and the end portion of the limiting member abuts against the top of the power board. By providing the limiting member, the power board installed in the first mounting groove 101 can be limited to ensure that the power board will not loosen or shift, which is beneficial to maintaining the stability and reliability of the electrical connection. In this embodiment, the limiting hole 103 is a threaded hole, and the limiting member can be a limiting screw. The limiting screw is threaded into the limiting hole 103, and the screw head of the limiting screw is limited and abuts against the top of the power board. The structure is simple and easy to disassemble and assemble.

[0067] In some embodiments, the cover body 10 is provided with a wire clamping structure 16, which is used to fix and constrain the power cord to ensure that the power cord does not loosen or shift, thereby helping to maintain the stability and reliability of the electrical connection.

[0068] like Figure 3 As shown, the cover body 10 is provided with a detection hole 1004, which is used for the insertion of a detection element. In this example, the detection element is a temperature measuring tube.

[0069] 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 cap structure for a water heater, characterized in that, The end cap structure includes: The cover body (10) is provided with an installation port (1001) for installing the inner tank of the water heater, and an overflow hole (131) is provided on the side of the cover body (10) away from the inner tank. The first reinforcing rib (20) is disposed on the side of the cover body (10) facing the inner liner, and the projection of the first reinforcing rib (20) on the cover body (10) at least partially surrounds the projection of the overflow hole (131) on the cover body (10).

2. The end cap structure of claim 1, wherein The first reinforcing rib (20) includes a first strip rib (21) and / or an arc rib (22).

3. The end cap structure of claim 1, wherein The thickness of the first reinforcing rib (20) gradually decreases in the direction away from the overflow hole (131).

4. The end cap structure of claim 1, wherein The thickness of the first reinforcing rib (20) is 0.7 mm to 1.0 mm.

5. The end cap structure of any one of claims 1-4, wherein, The cover body (10) includes: An annular inner wall (11) surrounds and forms the mounting opening (1001); The first annular end face (12) is circumferentially arranged around the mounting port (1001); The second annular end face (13) is arranged circumferentially around the first annular end face (12), and the first annular end face (12) and the second annular end face (13) are spaced apart in the axial direction of the first annular end face (12). The overflow hole (131) is opened on the outer side of the second annular end face (13), and the first reinforcing rib (20) is arranged on the inner side of the second annular end face (13). An annular connecting surface (14) is provided, with its two ends connected to the first annular end face (12) and the second annular end face (13) respectively, and the annular connecting surface (14) is provided to form an electrical compartment (1002) for installing a power board and a thermostat.

6. The end cap structure of claim 5, wherein The end cap structure further includes second reinforcing ribs (30), at least two of which are circumferentially spaced on the annular connecting surface (14); and / or The end cap structure also includes a third reinforcing rib (40), which is disposed on the first annular end face (12) and surrounds the mounting port (1001).

7. The end cap structure of claim 5, wherein The cavity wall of the electrical compartment (1002) is provided with a first mounting groove (101) extending along the axial direction of the mounting opening (1001), the first mounting groove (101) being used to mount the power board; and / or The electrical compartment (1002) has a second mounting groove (102) on its cavity wall, which is used to install the thermostat of the water heater.

8. The end cap structure of claim 7, wherein At least one limiting hole (103) is provided in the electrical compartment (1002) around the first mounting groove (101), and a limiting member is provided in the limiting hole (103), with the end portion of the limiting member abutting against the top of the power board.

9. The end cap structure of any one of claims 1-4, wherein, The cover body (10) is provided with a wire clamping structure (16), which is used to fix the power cord; and / or The cover body (10) is provided with a detection hole (1004) for detecting the penetration of an element.

10. A water heater, characterized by The end cover structure as claimed in any one of claims 1-9 is used to cover the end opening of the shell.

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