Kettle

Abstract

The kettle comprises a kettle body and a heating disc assembly, the heating disc assembly comprises a heating disc provided with a through hole, a water inlet valve used for opening and closing the through hole is arranged in the through hole in a penetrating mode, a limiting rib surrounding the water inlet valve is arranged on the outer side wall of the water inlet valve, the limiting rib is located below the heating disc, and a sealing ring is arranged at the top of the limiting rib. The bottom of the heating disc is provided with a sinking table protruding downwards, and the sinking table surrounds the through hole and clamps the sealing ring together with the limiting rib. The sinking table surrounding the through hole is arranged at the bottom of the heating disc, so that the position, surrounding the through hole, of the heating disc protrudes downwards, the sinking table protruding downwards and the limiting rib can jointly clamp the sealing ring between the sinking table and the limiting rib, and liquid in the gap between the water inlet valve and the through hole is prevented from leaking through the position between the limiting rib and the sinking table; due to the arrangement of the sinking table, the distance between the heating disc and the limiting rib is shortened, the extrusion effect of the heating disc and the limiting rib on the sealing ring is better, and the sealing performance between the limiting rib and the heating disc is enhanced.

Description

Technical Field

[0001] The utility model belongs to the field of drinking water equipment, and in particular relates to a kettle. Background Art

[0002] At present, before boiling water, the existing electric kettle needs to be removed from the base and filled with water. In order to solve the problem of inconvenience in filling water, an electric kettle with bottom water filling has appeared on the market. The kettle is usually provided with a water inlet valve on the bottom heating plate to control whether water is filled into the kettle. However, the sealing between the water inlet valve and the through hole on the heating plate is poor, so water leakage is prone to occur, resulting in a poor user experience. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a kettle to solve at least one of the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a kettle, comprising a kettle body forming a kettle cavity and a heating plate assembly installed at the bottom of the kettle body, the heating plate assembly comprising a heating plate provided with a through hole, a water inlet valve for opening and closing the through hole is passed through the through hole, a limiting rib surrounding the water inlet valve is provided on the outer wall of the water inlet valve, the limiting rib is located below the heating plate, a sealing ring is provided on the top of the limiting rib, and a downwardly protruding sink is provided at the bottom of the heating plate, the sink is arranged around the through hole and clamps the sealing ring together with the limiting rib.

[0005] In the above-mentioned kettle, the sink is formed by the heating plate being sunken downwards, and the through hole is arranged at the center of the sink.

[0006] In the above-mentioned kettle, the sink includes a bottom wall located at the center of the heating plate and a side wall for connecting the bottom wall and the heating plate, and the bottom surface of the bottom wall is a plane to fit with the top surface of the sealing ring.

[0007] In the above-mentioned kettle, the outer diameter of the sealing ring gradually decreases from top to bottom, so that the outer side wall of the sealing ring is inclined.

[0008] In the above-mentioned kettle, the water inlet valve includes a valve cover and a valve body provided with limiting ribs, the valve cover is arranged on the top of the valve body and abuts against the limiting ribs, and the sealing ring abuts against the outer side wall of the valve cover.

[0009] In the above-mentioned kettle, the inner ring of the sealing ring is provided with an avoidance groove, and the avoidance groove is arranged on the inner side wall of the sealing ring for avoiding the valve cover.

[0010] In the above kettle, a sealing member is arranged inside the valve cover, and the sealing member comprises a sealing ring abutting against the top of the valve body, and the outer side wall of the sealing ring abuts against the valve cover.

[0011] In the above kettle, the sealing member further comprises an insert rod coaxially arranged with the sealing ring and a connecting rod for connecting the insert rod and the sealing ring. A slot is provided at the bottom of the valve cover, and the insert rod is plugged into the slot.

[0012] In the above-mentioned kettle, the heating plate assembly also includes an upper coupler detachably connected to the bottom of the heating plate, the water inlet valve is inserted into the upper coupler, and the top of the upper coupler abuts against the bottom of the limiting rib.

[0013] In the above-mentioned kettle, a plurality of screw columns are provided at the bottom of the heating plate, and a plurality of mounting plates corresponding to the screw columns are provided on the side of the upper coupler, and the mounting plates are locked with the corresponding screw columns by screws.

[0014] The beneficial effects of the utility model are:

[0015] A kettle, comprising a kettle body forming a kettle cavity and a heating plate assembly installed at the bottom of the kettle body, the heating plate assembly comprising a heating plate with a through hole, a water inlet valve for opening and closing the through hole passing through the through hole, a limiting rib surrounding the water inlet valve on the outer wall of the water inlet valve, the limiting rib being located below the heating plate, a sealing ring being provided on the top of the limiting rib, a downwardly protruding sinking platform being provided at the bottom of the heating plate, the sinking platform being arranged around the through hole and clamping the sealing ring together with the limiting rib. The technical scheme has the following technical effects:

[0016] The utility model arranges a sink surrounding the through hole at the bottom of the heating plate, so that the position of the heating plate surrounding the through hole protrudes downward, and the limiting ribs on the outer peripheral side of the water inlet valve penetrating the through hole are located below the heating plate. The downwardly protruding sink can clamp the sealing ring between the two together with the limiting ribs, so that the water inlet valve and the heating plate are abutted through the sealing ring, avoiding liquid in the gap between the water inlet valve and the through hole from leaking through the limiting ribs and the sink. The arrangement of the sink reduces the distance between the heating plate and the limiting ribs, so that the heating plate and the limiting ribs have a better squeezing effect on the sealing ring, and the sealing between the limiting ribs and the heating plate is enhanced, ensuring the sealed connection between the water inlet valve and the heating plate, preventing water leakage at the bottom of the kettle, and providing a better user experience.

[0017] The sink is formed by the heating plate being sunken downward, and the through hole is arranged at the center of the sink. By sunken downward the heating plate to form the sink, the difficulty of processing the heating plate is reduced, and the thickness of the sink around the through hole is reduced, thereby reducing the depth of the through hole, so as to avoid poor abutment effect with the outer wall of the water inlet valve due to the through hole being too deep, thereby avoiding a large gap between the inside of the through hole and the outer wall of the water inlet valve, ensuring close abutment between the inner wall of the through hole and the outer wall of the water inlet valve, and achieving better sealing effect.

[0018] The sink comprises a bottom wall located at the center of the heating plate and a side wall for connecting the bottom wall and the heating plate, and the bottom surface of the bottom wall is a plane to fit with the top surface of the sealing ring. The bottom surface of the bottom wall is set to be a plane, so that the fitting area between the bottom wall of the sink and the top surface of the sealing ring is large, thereby achieving a good sealing effect between the bottom wall of the sink and the sealing ring.

[0019] The outer diameter of the sealing ring gradually decreases from top to bottom so that the outer side wall of the sealing ring is inclined, forming a triangular deformation gap between the outer side wall of the sealing ring and the top surface of the limiting rib, and the deformation gap can reserve deformation space for the outer peripheral side of the sealing ring. When the limiting rib and the sinking platform of the water inlet valve jointly squeeze the sealing ring, the outer peripheral lateral deformation gap of the sealing ring bends and deforms, so that the top and bottom surfaces of the sealing ring are more closely fitted to the heating plate and the limiting rib respectively, and the sealing effect is good.

[0020] The water inlet valve includes a valve cover and a valve body with limiting ribs. The valve cover is arranged on the top of the valve body and abuts against the limiting ribs. The sealing ring abuts against the outer wall of the valve cover to seal the abutment between the valve cover and the limiting ribs to prevent water leakage between the valve cover and the limiting ribs, and the sealing effect is good.

[0021] The inner ring of the sealing ring is provided with an avoidance groove, which is arranged on the inner side wall of the sealing ring for avoiding the valve cover, so that the inner ring of the sealing ring fits tightly on the valve cover, further enhancing the sealing of the sealing ring at the junction of the valve cover and the limiting rib.

[0022] A sealing member is provided inside the valve cover, and the sealing member comprises a sealing ring abutting against the top of the valve body, and the outer wall of the sealing ring abuts against the valve cover, that is, the sealing ring can block the top of the gap between the inner wall and the outer wall of the valve cover, thereby preventing water in the water inlet channel from leaking through the gap between the valve cover and the valve body, and enhancing the sealing of the connection between the valve cover and the valve body.

[0023] The seal also includes a plug rod coaxially arranged with the sealing ring and a connecting rod for connecting the plug rod and the sealing ring. A slot is provided at the bottom of the valve cover, and the plug rod is plugged into the slot. During installation, the seal only needs to be assembled onto the valve cover first, and then the valve cover is pressed onto the valve body, and the seal can be aligned with the sealing position of the valve cover and the valve body, which reduces the difficulty of assembly and allows for quick installation and positioning of the seal.

[0024] The heating plate assembly also includes an upper coupler detachably connected to the bottom of the heating plate, the water inlet valve is inserted into the upper coupler, and the top of the upper coupler abuts against the bottom of the limiting rib. By abutting the top of the upper coupler against the bottom of the limiting rib, the water inlet valve is limited in the vertical direction, so that the water inlet valve does not need to be provided with a locking structure, and the sealing ring can be stably pressed on the sink through the limiting rib, thereby enhancing the sealing between the valve body and the heating plate.

[0025] A plurality of screw columns are provided at the bottom of the heating plate, and a plurality of mounting plates corresponding to the screw columns are provided on the side of the upper coupler. The mounting plates are locked with the corresponding screw columns by screws to fix the upper coupler to the bottom of the heating plate, thereby enhancing the stability of the connection between the upper coupler and the heating plate. At the same time, it is convenient for the installation and disassembly of the upper coupler and the water inlet valve, thereby reducing the maintenance and replacement costs.

[0026] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] Figure 1 is a cross-sectional view of a kettle;

[0029] Figure 2 It is a schematic diagram of the assembly of the heating plate assembly and the water inlet valve;

[0030] Figure 3 for Figure 2 A partial enlarged view of

[0031] Figure 4 is a three-dimensional diagram of the sealing ring;

[0032] Figure 5 is a cross-sectional view of the water inlet valve;

[0033] Figure 6 Exploded view of the heating plate assembly and water inlet valve.

[0034] Reference numerals:

[0035] 100, teapot body; 110, teapot cavity;

[0036] 200, heating plate assembly; 210, heating plate; 211, through hole; 212, sink; 2121, bottom wall; 2122, side wall; 213, screw column; 220, upper coupler; 221, mounting plate; 230, screw;

[0037] 300, water inlet valve; 310, valve cover; 311, slot; 312, water hole; 320, valve body; 321, limiting rib; 322, cylinder; 323, water inlet channel; 330, valve core;

[0038] 400, sealing ring; 410, avoidance groove; 420, mounting slope; 430, deformation gap;

[0039] 500, sealing member; 510, sealing ring; 511, annular rib; 520, plug rod; 530, connecting rod. DETAILED DESCRIPTION

[0040] The utility model provides a kettle, comprising a kettle body forming a kettle cavity and a heating plate assembly installed at the bottom of the kettle body, the heating plate assembly comprising a heating plate provided with a through hole, a water inlet valve for opening and closing the through hole passing through the through hole, a limiting rib surrounding the water inlet valve is provided on the outer wall of the water inlet valve, the limiting rib is located below the heating plate, a sealing ring is provided on the top of the limiting rib, a downwardly protruding sink is provided at the bottom of the heating plate, the sink is arranged around the through hole and clamps the sealing ring together with the limiting rib. The utility model arranges a sink surrounding the through hole at the bottom of the heating plate, so that the position of the heating plate surrounding the through hole protrudes downward, and the limiting ribs on the outer peripheral side of the water inlet valve penetrating the through hole are located below the heating plate. The downwardly protruding sink can clamp the sealing ring between the two together with the limiting ribs, so that the water inlet valve and the heating plate are abutted through the sealing ring, avoiding liquid in the gap between the water inlet valve and the through hole from leaking through the limiting ribs and the sink. The arrangement of the sink reduces the distance between the heating plate and the limiting ribs, so that the heating plate and the limiting ribs have a better squeezing effect on the sealing ring, and the sealing between the limiting ribs and the heating plate is enhanced, ensuring the sealed connection between the water inlet valve and the heating plate, preventing water leakage at the bottom of the kettle, and providing a better user experience.

[0041] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] Example:

[0047] A kettle, Figures 1 to 6 As shown, it includes a kettle body 100 and a heating plate assembly 200. The kettle body 100 is surrounded by a kettle cavity 110 for containing liquid. The heating plate assembly 200 is installed at the bottom of the kettle body 100 to cover the bottom of the kettle cavity 110. The heating plate assembly 200 includes a heating plate 210 for heating the liquid in the kettle cavity 110. A through hole 211 is provided at the center of the heating plate 210. A water inlet valve 300 is penetrated in the through hole 211. The water inlet valve 300 is used to control the opening and closing of the through hole 211. The outer peripheral side of the water inlet valve 300 is surrounded by a limiting rib 321. The limiting rib 321 protrudes from the outer side wall of the water inlet valve 300. The upper part passes through the through hole 211 and extends into the pot cavity 110. The limiting rib 321 is located below the heating plate 210. A downwardly protruding platform 212 is provided at the bottom of the heating plate 210. The platform 212 is arranged around the through hole 211 and is aligned with the limiting rib 321 up and down. A sealing ring 400 located on the top of the limiting rib 321 is sleeved on the outer wall of the water inlet valve 300. The limiting rib 321 and the platform 212 jointly clamp the sealing ring 400 so that the top surface of the sealing ring 400 abuts against the bottom surface of the platform 212, and the bottom surface of the sealing ring 400 abuts against the limiting rib 321, thereby sealing the connection between the water inlet valve 300 and the heating plate 210.

[0048] The utility model provides a sink 212 surrounding the through hole 211 at the bottom of the heating plate 210, so that the position of the heating plate 210 surrounding the through hole 211 is convex downward, and the limiting rib 321 on the outer peripheral side of the water inlet valve 300 penetrating the through hole 211 is located below the heating plate 210. The downwardly protruding sink 212 can clamp the sealing ring 400 between the two together with the limiting rib 321, so that the water inlet valve 300 abuts against the heating plate 210 through the sealing ring 400, thereby preventing the water inlet valve 300 from being blocked. 0 and the through hole 211 leak through the limiting rib 321 and the sink 212. The setting of the sink 212 reduces the distance between the heating plate 210 and the limiting rib 321, so that the heating plate 210 and the limiting rib 321 have a better squeezing effect on the sealing ring 400, and enhances the sealing between the limiting rib 321 and the heating plate 210, ensuring the sealed connection between the water inlet valve 300 and the heating plate 210, preventing water leakage at the bottom of the kettle, and providing a better user experience.

[0049] like Figure 2 and Figure 3 As shown, in the present embodiment, the sinker 212 and the heating plate 210 are an integral structure, and the sinker 212 is formed by the heating plate 210 being recessed downward on the side of the through hole 211, and the through hole 211 is arranged at the center of the sinker 212. The sinker 212 is formed by recessing the heating plate 210 downward, thereby reducing the difficulty of processing the heating plate 210 and reducing the thickness of the sinker 212 on the side of the through hole 211, thereby reducing the depth of the through hole 211, so as to avoid poor abutment effect with the outer wall of the water inlet valve 300 due to the through hole 211 being too deep, thereby avoiding a large gap between the inside of the through hole 211 and the outer wall of the water inlet valve 300, ensuring the close abutment between the inner wall of the through hole 211 and the outer wall of the water inlet valve 300, and achieving a better sealing effect. The sink 212 in this embodiment includes a bottom wall 2121 and a side wall 2122. The bottom wall is located at the center of the heating plate 210. The through hole 211 is provided on the bottom wall 2121. The side wall 2122 is connected between the outer peripheral side of the bottom wall 2121 and the inner circle of the heating plate 210. Preferably, the bottom surface of the bottom wall 2121 is a plane. When the water inlet valve 300 is installed on the heating plate 210, the bottom wall 2121 of the sink 212 fits with the top surface of the sealing ring 400. The bottom surface of the bottom wall 2121 is set to a plane, so that the fitting area between the bottom wall 2121 of the sink 212 and the top surface of the sealing ring 400 is large, thereby making the sealing effect between the bottom wall 2121 of the sink 212 and the sealing ring 400 good.

[0050] like Figure 3 and Figure 4As shown, the outer diameter of the sealing ring 400 in this embodiment gradually decreases from top to bottom, so that the outer wall of the sealing ring 400 forms an installation slope 420 inclined downward. The installation slope 420 is set to form a triangular deformation gap 430 between the outer wall of the sealing ring 400 and the top surface of the limiting rib 321. The deformation gap 430 can reserve a deformation space for the outer peripheral side of the sealing ring 400. When the limiting rib 321 of the water inlet valve 300 and the sink 212 jointly squeeze the sealing ring 400, the outer peripheral lateral deformation gap 430 of the sealing ring 400 is bent and deformed, so that the top and bottom surfaces of the sealing ring 400 are more closely fitted to the heating plate 210 and the limiting rib 321, respectively, and the sealing effect is good.

[0051] In this embodiment, the water inlet valve 300 includes a valve body 320, a valve core 330 and a valve cover 310. The valve body 320 includes a cylinder 322. The limiting rib 321 is arranged around the outer wall of the cylinder 322. The cylinder 322 is provided with a water inlet channel 323 that vertically penetrates the cylinder 322. The water inlet channel 323 is used to connect the outside and the pot cavity 110. The valve core 330 is inserted into the water inlet channel 323 to control the opening and closing of the water inlet channel 323. The valve cover 310 provided with a water hole 312 is crimped On the cylinder 322 located above the limiting rib 321, a cover is arranged on the top of the cylinder 322, the water hole 312 is used to connect the water inlet channel 323 and the pot cavity 110, the bottom of the valve cover 310 is against the top surface of the limiting rib 321, the valve cover 310 is inserted into the through hole 211, and the sealing ring 400 is against the outer wall of the valve cover 310 to seal the abutment between the valve cover 310 and the limiting rib 321, to prevent water leakage between the valve cover 310 and the limiting rib 321, and the sealing effect is good. Preferably, an avoidance groove 410 is provided on the inner ring of the sealing ring 400, and the avoidance groove 410 is arranged on the inner wall of the sealing ring 400 to avoid the valve cover 310, so that the inner ring of the sealing ring 400 is closely fitted on the valve cover 310, further enhancing the sealing of the sealing ring 400 on the abutment between the valve cover 310 and the limiting rib 321.

[0052] like Figure 5As shown, in this embodiment, a sealing member 500 is provided in the valve cover 310, and the sealing member 500 includes a sealing ring 510, the bottom surface of the sealing ring 510 is against the top of the valve body 320, and the outer wall of the sealing ring 510 is against the inner wall of the valve cover 310, that is, the sealing ring 510 can block the top of the gap between the inner wall and the outer wall of the valve cover 310, so as to prevent the water flow in the water inlet channel from leaking through the gap between the valve cover 310 and the valve body 320, thereby enhancing the sealing performance of the connection between the valve cover 310 and the valve body 320. The seal 500 also includes an insert rod 520 and a connecting rod 530. The insert rod 520 is vertically arranged and coaxial with the sealing ring 510. The connecting rod 530 is horizontally arranged and connected between the insert rod 520 and the sealing ring 510. A slot 311 facing the water inlet channel is provided on the valve cover 310. The insert rod 520 is vertically inserted in the slot 311 to limit the overall position of the seal 500. During installation, it is only necessary to first assemble the seal 500 onto the valve cover 310, and then press the valve cover 310 onto the valve body 320, so that the seal 500 can be aligned with the valve cover 310 and the valve body 320 at the position to be sealed, thereby reducing the difficulty of assembly so as to quickly install and position the seal 500. Preferably, an annular rib 511 is provided at the bottom of the sealing ring 510, and the annular rib 511 extends into the water inlet channel of the valve body 320. The outer wall of the annular rib 511 abuts against the inner wall of the water inlet channel to increase the abutment area between the sealing element 500 and the valve body 320, further enhance the sealing between the sealing element 500 and the valve body 320, and prevent liquid from passing through the gap between the bottom surface of the sealing ring 510 and the top surface of the valve body 320.

[0053] In this embodiment, the heating plate assembly 200 further includes an upper coupler 220, which is detachably connected to the heating plate assembly 200 to facilitate separate replacement and maintenance. The upper coupler 220 is connected to the bottom of the heating plate 210. When the kettle is placed on a structure such as a base provided with a lower coupler, the upper coupler 220 is used to electrically connect with the lower coupler to power the kettle. The upper coupler 220 is arranged around the water inlet valve 300, and the top of the upper coupler 220 abuts against the bottom of the limiting rib 321 to limit the water inlet valve 300 in the vertical direction, so that the water inlet valve 300 does not need to be provided with a locking structure, and the sealing ring 400 can be stably pressed on the sink 212 through the limiting rib 321, thereby enhancing the sealing between the valve body 320 and the heating plate 210. Preferably, a plurality of mounting plates 221 are provided on the outer peripheral side of the upper coupler 220, and a plurality of screw columns 213 are provided on the bottom of the heating plate 210. The screw columns 213 are arranged in one-to-one correspondence with the mounting plates 221. The screws 230 pass through the mounting plates 221 and are locked with the screw columns 213 to fix the upper coupler 220 to the bottom of the heating plate 210, thereby enhancing the stability of the connection between the upper coupler 220 and the heating plate 210. At the same time, it is convenient for the installation and disassembly of the upper coupler 220 and the water inlet valve 300, thereby reducing the maintenance and replacement costs.

[0054] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A kettle, comprising a kettle body forming a kettle cavity and a heating plate assembly installed at the bottom of the kettle body, wherein the heating plate assembly comprises a heating plate provided with a through hole, wherein a water inlet valve for opening and closing the through hole is provided in the through hole, wherein: A limiting rib surrounding the water inlet valve is provided on the outer wall of the water inlet valve, the limiting rib is located below the heating plate, a sealing ring is provided on the top of the limiting rib, and a downwardly protruding sink is provided on the bottom of the heating plate, the sink is arranged around the through hole and clamps the sealing ring together with the limiting rib.

2. A kettle according to claim 1, characterized in that: The sinking platform is formed by the heating plate being recessed downward, and the through hole is arranged at the center of the sinking platform.

3. A kettle according to claim 2, characterized in that: The sink comprises a bottom wall located at the center of the heating plate and a side wall for connecting the bottom wall and the heating plate. The bottom surface of the bottom wall is a plane so as to fit with the top surface of the sealing ring.

4. A kettle according to claim 1, characterized in that: The outer diameter of the sealing ring gradually decreases from top to bottom, so that the outer side wall of the sealing ring is inclined.

5. A kettle according to claim 1, characterized in that: The water inlet valve comprises a valve cover and a valve body provided with the limiting ribs, the valve cover is arranged on the top of the valve body and abuts against the limiting ribs, and the sealing ring abuts against the outer side wall of the valve cover.

6. A kettle according to claim 5, characterized in that: The inner ring of the sealing ring is provided with an avoidance groove, and the avoidance groove is arranged on the inner side wall of the sealing ring to avoid the valve cover.

7. A kettle according to claim 5, characterized in that: A sealing member is arranged inside the valve cover, and the sealing member comprises a sealing ring abutting against the top of the valve body, and an outer side wall of the sealing ring abuts against the valve cover.

8. A kettle according to claim 7, characterized in that: The sealing member further comprises an insert rod coaxially arranged with the sealing ring and a connecting rod for connecting the insert rod and the sealing ring. A slot is provided at the bottom of the valve cover, and the insert rod is plugged into the slot.

9. A kettle according to claim 1, characterized in that: The heating plate assembly further comprises an upper coupler detachably connected to the bottom of the heating plate, the water inlet valve is arranged in the upper coupler, and the top of the upper coupler abuts against the bottom of the limiting rib.

10. A kettle according to claim 9, characterized in that: The bottom of the heating plate is provided with a plurality of screw columns, and the side of the upper coupler is provided with a plurality of mounting plates corresponding to the screw columns one by one, and the mounting plates are locked with the corresponding screw columns by screws.

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