Liquid heater

Abstract

The liquid heater comprises a kettle body, a kettle cover and a metal tea basket, the kettle cover comprises a plastic cover and a metal lower cover, the metal tea basket is detachably installed on the metal lower cover, the metal lower cover is provided with an avoiding notch, the plastic cover is provided with a filling part matched with the avoiding notch so as to fill the avoiding notch, and the metal tea basket is detachably installed on the plastic cover. And an electrode assembly is arranged at the filling part. The avoiding notch is formed in the lower metal cover, the filling part for filling the avoiding notch is arranged on the plastic cover, and the electrode assembly is arranged at the filling part, so that the structural composition of the kettle cover can be simplified, the assembly efficiency of the kettle cover is improved, and the insulation distance between the electrode assembly and the lower metal cover is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of household appliances, and particularly relates to a liquid heater. BACKGROUND

[0002] The existing liquid heater, taking a health pot as an example, generally comprises a base, a pot body and a pot cover, the pot body has a hollow handle on one side, the pot body can be electrically connected to the base, and the pot cover generally comprises a plastic cover and a metal cover below the plastic cover. When in use, the food materials to be cooked are put into the pot body, water is added, the pot body is placed on the base, the base is powered on, and then the cooking can be performed. In order to prevent the phenomenon of pot overflow during cooking, the existing health pot is provided with an anti-overflow electrode extending towards the inside of the pot body on the pot cover and an electrical connector arranged on the side of the pot body, the anti-overflow electrode is electrically connected to the electrical connector through a conductive structure, when the pot cover is placed on the pot body, the electrical connector can be electrically connected to the probe device arranged at the handle position of the pot body, so that the anti-overflow signal detected by the anti-overflow electrode is transmitted to the control panel of the base through the electrical connector, the probe device and the like in turn, and the cooking program is intervened and adjusted in time to prevent the pot from overflowing.

[0003] When the cooking type such as tea boiling is performed, in order to facilitate the taking and placing of tea leaves, control the soaking time of tea leaves and the like, the existing health pot is generally provided with a tea basket to improve the use experience of users. The existing tea basket generally has types such as a metal tea basket, a glass tea basket and a ceramic tea basket, the glass tea basket and the ceramic tea basket not only have high processing and manufacturing costs, but also need to be provided with a cover-in-cover structure on the pot cover for hoisting the glass tea basket and the ceramic tea basket, so that the glass tea basket and the ceramic tea basket can be fixed, resulting in an overall cost escalation. The assembly between the metal tea basket and the metal cover is simple and easy to operate, so the use rate of the metal tea basket is getting higher and higher. However, in the use process, the lower end face and the side face of the metal cover will gather condensed water, when the condensed water is accidentally conducted with the anti-overflow electrode and / or the electrical connector arranged on the pot cover, due to the metal tea basket hoisted below the metal cover, the anti-overflow detection will be invalid, and the health pot cannot work normally when the cooking type of using the metal tea basket.

[0004] Patent document CN201921602282.7 discloses a kind of anti-overflow stable food processor, it includes cup and cup cover, cup cover is combined with cup cover and forms pulp chamber, cup cover is equipped with anti-overflow device, cup cover includes metal cover, anti-overflow electrode penetrates metal cover and enters pulp chamber, anti-overflow electrode is equipped with insulating support between metal cover, metal cover is equipped with installation hole for anti-overflow electrode to penetrate, insulating support includes separation part and the limiting portion located below separation part, anti-overflow electrode is separated from metal cover by separation part, and by limiting portion, it is supported below metal cover, while the longitudinal position of insulating support and anti-overflow electrode is limited, anti-overflow electrode is equipped with insulating gasket, insulating gasket is located above metal cover, metal cover is clamped by insulating gasket and limiting portion, the inside of installation hole and the upper and lower sides are all insulated by insulating support and insulating gasket, to avoid anti-overflow electrode from contacting with metal cover, the outside of limiting portion is equipped with sealing sleeve, insulating support and metal cover are sealed and fixed by sealing sleeve, to avoid liquid in pulp chamber from entering above metal cover.The anti-overflow scheme in the food processor has the following defects:

[0005] (1) The design of insulating support for increasing the insulation distance between anti-overflow electrode and metal cover has many parts, which not only increases the manufacturing cost, but also increases the assembly process, making the assembly of anti-overflow electrode and metal cover complicated, greatly reducing the assembly efficiency, and the technology adopts secondary injection molding to fix the insulating support on the outside of anti-overflow electrode, the fixing method between the insulating support itself and anti-overflow electrode is not only complex in processing technology, but also due to the long-term application in humid environment, the combination interface between the two is prone to cracks or deformation due to environmental factors, the integrated fixing method makes it impossible to replace the insulating support or anti-overflow electrode separately, and the whole needs to be replaced, greatly increasing the maintenance cost;

[0006] (2) The insulating support is mainly used to increase the insulation distance between the installation hole of anti-overflow electrode and metal cover, and the insulation distance between the lower surface of anti-overflow electrode and metal cover is still enlarged by the sealing sleeve, however, in actual application, condensate water will accumulate between the lower surface of metal cover and the outer surface of sealing sleeve, when the condensate water on the lower surface of metal cover and the condensate water on the outer surface of sealing sleeve form a continuous water film, an electrically conductive path will be formed between the lower surface of metal cover, the outer surface of sealing sleeve and anti-overflow electrode, and when a metal tea basket is hung below the metal cover, the electrically conductive path will be electrically connected with the metal tea basket, resulting in anti-overflow failure. Utility model content

[0007] The present application provides a kind of liquid heater to solve the technical problems of excessive parts and complex assembly of cup cover when increasing the insulation distance between metal lower cover and anti-overflow electrode.

[0008] The technical scheme adopted in the present application is as follows:

[0009] A liquid heater comprises a kettle body, a kettle cover and a metal tea basket, the kettle cover comprises a plastic cover and a metal lower cover, the metal tea basket is detachably mounted on the metal lower cover, the metal lower cover is provided with a relief gap, the plastic cover is provided with a filling part which is adapted to the relief gap to fill the relief gap, and an electrode assembly is arranged at the filling part.

[0010] The present application sets a relief gap on the metal lower cover and a filling part which fills the relief gap on the plastic cover, and the design of the relief gap and the filling part can play a role in rough positioning of the plastic cover and the metal lower cover during assembly, reducing the difficulty of alignment and improving the assembly efficiency between the two. The electrode assembly is arranged at the filling part, and the filling part increases the insulation distance between the anti-overflow electrode and the metal lower cover. Compared with the design of the insulation bracket in the prior art, the structure of the present application is simple, the number of parts is reduced, and the assembly efficiency of the kettle cover can be greatly improved. Moreover, the presence of the filling part can effectively isolate the contact between the condensed water accumulated on the metal lower cover during use and the electrode assembly, thereby reducing the problem of anti-overflow detection failure caused by the contact between the condensed water and the electrode assembly, and ensuring that the liquid heater can work normally when the metal tea basket is used.

[0011] The electrode assembly comprises an anti-overflow electrode and a sealing element sleeved on the outer side of the anti-overflow electrode, the relief gap comprises a first gap towards the inside of the kettle body, the filling part has a first filling part which is adapted to the first gap, the anti-overflow electrode is arranged at the first filling part, the sealing element is in abutting and sealing contact with the lower end surface of the first filling part, and the first filling part is provided with an extension part which is exposed between the upper part of the sealing element and the circumference of the first gap to form a partition area.

[0012] If only the filling part is provided, the hot steam generated during the operation of the liquid heater or the residual water when the kettle cover is cleaned can easily enter the inside of the kettle cover through the joint position of the filling part and the anti-overflow electrode, which can cause the bacteria in the inside of the kettle cover to proliferate and can cause the part of the anti-overflow electrode located on the inside of the kettle cover to be electrified, thereby causing the anti-overflow to fail. Moreover, when only the filling part is provided, the condensed water accumulated on the lower surface of the filling part and the condensed water accumulated on the lower surface of the metal lower cover can be connected into a water film to cause the lower surface of the metal lower cover, the lower surface of the filling part and the anti-overflow electrode to form a conductive path, thereby causing the risk of anti-overflow failure. The technical solution sets a sealing member outside the anti-overflow electrode, and the sealing member abuts and seals the lower end surface of the first filling part provided on the plastic cover, so that the condensed water accumulated on the first filling part during use cannot enter the inside of the sealing member through the joint position of the first filling part and the sealing member to contact the anti-overflow electrode, thereby avoiding the occurrence of the phenomenon that the part of the anti-overflow electrode located on the inside of the kettle cover is electrified. The extension part exposed between the upper part of the sealing member and the periphery of the first notch is provided on the first filling part, which can further increase the creepage distance of the current. When the surfaces of the metal lower cover, the extension part and the sealing member are all accumulated with condensed water, and the condensed water attached to the three surfaces is connected into a sheet to form a sheet water film, due to the increase of the creepage distance, the resistance to the current flow will also increase accordingly, so that it is difficult for the current to form an effective conduction path between the anti-overflow electrode and the metal lower cover, thereby greatly reducing the probability of electrical conduction between the metal lower cover and the anti-overflow electrode, and further reducing the probability of anti-overflow failure.

[0013] The extension part and the sealing member are structures made of different insulating materials.

[0014] The technical solution can effectively improve the overall insulation performance by designing the extension part and the sealing member as structures made of different insulating materials, and further increase the transmission resistance of the current between the anti-overflow electrode and the metal lower cover, thereby further reducing the probability of electrical conduction between the metal lower cover and the anti-overflow electrode.

[0015] The extension part, the first filling part and the plastic cover are integrally formed, and the sealing member is a silica gel member.

[0016] The technical solution sets the extension part, the first filling part and the plastic cover as an integrally formed structure, which not only reduces the processing difficulty and saves the assembly steps, but also tightly combines the extension part, the first filling part and the plastic cover to form a whole, thereby enhancing the stability of the structure and reducing the risk of anti-overflow failure caused by loosening or separation of individual components. The sealing member is a silica gel member, which can not only ensure the closer fit between the sealing member and the first filling part by the good elasticity of silica gel, thereby ensuring the stability of the sealing performance, but also can effectively prevent the current from passing through the surface of the sealing member by the high resistivity of silica gel, thereby further reducing the risk of anti-overflow failure.

[0017] The lower end surface of the first filling part is located at a position with a lower height than the lower end surface of the adjacent area of the metal lower cover and the first gap, so as to form a drip water along between the first filling part and the metal lower cover.

[0018] According to the Coanda effect, the fluid has a tendency to flow along the convex surface. In the technical solution, the position height of the first filling part and the first gap is designed to form a drip water along between the first filling part and the metal lower cover. The condensed water formed on the lower surface of the metal lower cover during the use of the liquid heater has a tendency to drip along the drip water along to the kettle body, thereby reducing the probability of forming a continuous water film between the metal lower cover and the first filling part, and further reducing the probability of electrical conduction between the metal lower cover and the anti-overflow electrode.

[0019] The electrode assembly includes an anti-overflow electrode and an electrical connector electrically connected to the anti-overflow electrode. The electrical connector can be electrically conductive with the conductive part provided on the kettle body. The avoiding gap includes a second gap towards the handle side of the kettle body. The filling part is provided with a second filling part matched with the second gap. The electrical connector is provided on the second filling part. The outer side of the plastic cover is wrapped with an anti-falling part extending downward and wrapping the metal lower cover. The anti-falling parts are arranged along the circumference of the plastic cover to form an avoiding area avoiding the second filling part between two adjacent anti-falling parts.

[0020] Generally speaking, the anti-overflow electrode needs to be electrically connected with the control unit arranged on the kettle body through the electric connector arranged on the side of the kettle cover. The outer periphery of the kettle cover of the existing liquid heater is provided with a sealing ring. On one hand, the sealing ring can prevent water from the outside from entering the inside of the kettle cover through the joint gap between the plastic cover and the metal lower cover. On the other hand, the sealing ring can cooperate with the spout of the kettle body to prevent the kettle cover from falling during pouring. A through hole is arranged on the sealing ring for the electric connector to pass through, so that the electric connector can contact the conductive part arranged on the kettle body. However, during the use of the liquid heater or after the kettle cover is cleaned, water may be attached to the outer periphery of the sealing ring. If the water attached to the outer periphery of the sealing ring is in contact with the electric connector, the electric signal source of the electric connector will not be the anti-overflow electrode, thereby causing the anti-overflow failure. The technical solution can effectively isolate the condensed water attached to the metal lower cover during use from contacting the electric connector, thereby avoiding the problem of anti-overflow detection failure caused by the contact between the condensed water and the electric connector. By wrapping the anti-disengagement part extending downward and wrapping the metal lower cover outside the plastic cover, on one hand, the metal lower cover can be effectively prevented from disengaging or shifting during use, ensuring the stability of the metal lower cover installation. On the other hand, when the kettle cover is closed to the kettle body, the setting of the anti-disengagement part can also increase the friction between the kettle body, thereby avoiding the spilling of water during pouring. By arranging the anti-disengagement parts along the circumference of the plastic cover, an avoidance area for avoiding the second filling part can be formed between two adjacent anti-disengagement parts. Even if condensed water is attached to the anti-disengagement part during use, the condensed water attached to the anti-disengagement part can also be prevented from contacting the electric connector, thereby further reducing the probability of anti-overflow failure.

[0021] The kettle cover further comprises an upper cover, the upper cover, the plastic cover and the metal lower cover are arranged in sequence from top to bottom, a ring-shaped sealing ring is arranged between the upper cover and the plastic cover, and the anti-disengagement part is integrally formed with the sealing ring.

[0022] The technical solution can effectively prevent water from the outside from entering the inside of the upper cover and the plastic cover and contacting the electrode assembly through the joint gap between the upper cover and the plastic cover during use or cleaning, thereby reducing the anti-overflow failure. The design of integrally forming the anti-disengagement part with the sealing ring not only simplifies the production process and reduces the assembly steps, but also enhances the stability of the overall structure. In combination with the avoidance design between the anti-disengagement part and the electric connector, the probability of the liquid attached to the electric connector and the sealing ring contacting each other can be reduced on the basis of the ring-shaped sealing ring, thereby reducing the probability of anti-overflow failure.

[0023] The electrode assembly comprises an anti-overflow electrode and an electrical connector electrically connected with the anti-overflow electrode, the electrical connector can be electrically connected with the conductive part provided on the kettle body, the avoiding gap comprises a first gap and a second gap, the filling part comprises a first filling part matched with the first gap and a second filling part matched with the second gap, the anti-overflow electrode is installed on the first filling part, the electrical connector is installed on the second filling part, and the first filling part and the second filling part are connected.

[0024] If the first filling part and the second filling part are arranged separately, not only the processing difficulty of the plastic cover is increased, the manufacturing cost is increased, but also the second filling part is directly adjacent to the lower surface of the metal lower cover, thereby shortening the insulation distance between the electrical connector and the lower surface of the metal lower cover, and increasing the probability of electrical conduction of the electrical connector and the condensed water on the lower surface of the metal lower cover. In the technical solution, the anti-overflow electrode is arranged on the first filling part, the electrical connector is arranged on the second filling part, and the first filling part and the second filling part are connected, thereby avoiding the direct contact between the bottom of the second filling part and the lower surface of the metal lower cover, and further reducing the probability of electrical conduction between the electrical connector and the metal lower cover. At the same time, the technical solution also reduces the probability of electrical conduction between the anti-overflow electrode and the metal lower cover. Compared with the technical solution of arranging the anti-overflow electrode on the filling part or arranging the electrical connector on the filling part, the probability of anti-overflow failure of the electrode assembly is further improved. In addition, the first filling part and the second filling part are connected, which can simplify the design difficulty and processing difficulty of the metal lower cover and the plastic cover.

[0025] The first filling part, the second filling part and the plastic cover are integrally formed; or the first filling part and the second filling part are separately formed, and the first filling part and the second filling part are structures made of different insulating materials.

[0026] The first filling part, the second filling part and the plastic cover are integrally formed, which not only reduces the processing difficulty and saves the assembly step, but also tightly combines the first filling part, the second filling part and the plastic cover to form a whole, thereby enhancing the stability of the structure and reducing the risk of anti-overflow failure caused by loosening or separation of individual parts.

[0027] The first filling part and the second filling part are integrally formed, and the first filling part and the second filling part are made of different insulating materials. The mechanical properties of the overall structure can be optimized by reasonably selecting the materials according to the advantages of different insulating materials in mechanical strength, flexibility, wear resistance and the like. For example, during long-term use, the kettle cover will be repeatedly lifted or placed on the kettle body. Since the second filling part is in contact with the side wall of the kettle body, the wear resistance of the second filling part is more excellent than that of the first filling part, so as to meet the service life requirement. In addition, by designing the first filling part and the second filling part to be made of different insulating materials, the overall insulation performance can be effectively improved, and the transmission resistance of the electric current between the metal lower cover and the electric connecting piece is further increased, so as to further reduce the probability of electrical conduction between the metal lower cover and the electric connecting piece.

[0028] The electrode assembly comprises an anti-overflow electrode and an electric connecting piece electrically connected with the anti-overflow electrode, the electric connecting piece can be electrically conducted with a conductive piece arranged on the kettle body, and an upper end of the anti-overflow electrode and one end of the electric connecting piece are arranged in a cavity of the plastic cover.

[0029] The liquid heater further comprises a cover plate sealingly abutting with the plastic cover to cooperatively form the cavity, or the kettle cover further comprises an upper cover located above the plastic cover, and the upper cover has a surrounding plate extending downward to sealingly abut with the plastic cover and cooperatively form the cavity.

[0030] By arranging the cover plate or the surrounding plate to cover the cavity, the probability of the water in the external environment contacting the upper end of the anti-overflow electrode or the one end of the electric connecting piece is reduced, and the probability of anti-overflow failure is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and do not limit the application in any way. In the drawings:

[0032] Figure 1 It is a perspective view of the liquid heater according to an embodiment of the application;

[0033] Figure 2 It is a perspective view of the kettle cover according to an embodiment of the application Figure 1 ;

[0034] Figure 3 It is a sectional view of the kettle cover according to an embodiment of the application;

[0035] Figure 4 It is an enlarged view of the circle drawing part of Figure 3 ;

[0036] Figure 5An exploded view of the kettle lid according to an embodiment of the present application Figure 1 ;

[0037] Figure 6 A perspective view of the kettle lid according to an embodiment of the present application Figure 2 ;

[0038] Figure 7 An exploded view of the kettle lid according to an embodiment of the present application Figure 2 ;

[0039] Figure 8 A perspective view of the metal lower cover according to an embodiment of the present application

[0040] Figure 9 An assembly view of the plastic cover and the metal lower cover according to an embodiment of the present application

[0041] wherein,

[0042] 1. The plastic cover; 101. The first filling portion; 102. The second filling portion; 103. The extension portion; 104. The drip edge; 105. The cover plate;

[0043] 2. The metal lower cover; 201. The first notch; 202. The second notch;

[0044] 3. The metal tea basket;

[0045] 4. The anti-overflow electrode;

[0046] 5. The sealing member; 501. The sealing body; 502. The upper sealing portion;

[0047] 6. The lower clamping member;

[0048] 7. The electrical connecting member;

[0049] 8. The upper cover;

[0050] 9. The cavity;

[0051] 10. The kettle body;

[0052] 11. The sealing ring;

[0053] 12. The anti-dropping member. DETAILED DESCRIPTION

[0054] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0055] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced without the specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application. It can be understood that the embodiments of the present application and the characteristics of the embodiments can be combined with each other under the condition of no conflict.

[0056] In addition, in the description of the present application, it needs to be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the positional or relative relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0057] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] As shown in Figure 1 and Figure 2 A liquid heater, comprising a kettle body 10, a kettle cover and a metal tea basket 3, the kettle cover comprises a plastic cover 1 and a metal lower cover 2, the metal tea basket 3 is detachably mounted on the metal lower cover 2, the metal lower cover 2 is provided with a avoiding gap, the plastic cover 1 is provided with a filling part matched with the avoiding gap to fill the avoiding gap, and an electrode assembly is arranged at the filling part.

[0060] It should be noted that the application does not limit the food materials that can be placed in the metal tea basket 3, which can be tea leaves, scented tea, traditional Chinese medicinal materials, etc. In actual use, users can configure them according to their needs.

[0061] The application sets an avoiding gap on the metal lower cover 2 and sets a filling part on the plastic cover 1 to fill the avoiding gap. The design of the avoiding gap and the filling part can also play a role in rough positioning of the plastic cover 1 and the metal lower cover 2 during assembly, reducing the difficulty of alignment and improving the assembly efficiency between the two. The electrode assembly is arranged at the filling part, and the filling part increases the insulation distance between the anti-overflow electrode and the metal lower cover. Compared with the design of the insulation support in the prior art, the structure of the application is simple, the number of parts is reduced, and the assembly efficiency of the kettle cover can be greatly improved. Moreover, the presence of the filling part can effectively isolate the condensed water accumulated on the metal lower cover from contacting the electrode assembly during use, thereby reducing the problem of anti-overflow detection failure caused by the contact between the condensed water and the electrode assembly, and ensuring that the liquid heater can work normally when the metal tea basket is used.

[0062] The application does not limit the connection method between the metal lower cover 2 and the plastic cover 1. In one embodiment, the metal lower cover 2 is provided with a plurality of buckles along its circumference, and the plastic cover 1 is provided with a plurality of buckling positions along its circumference. The metal lower cover 2 and the plastic cover 1 are fixed by buckling and buckling. In another embodiment, the metal lower cover 2 is provided with a first mounting hole, and the plastic cover 1 is provided with a second mounting hole opposite the first mounting hole. The metal lower cover 2 and the plastic cover 1 are connected by a fastener (such as a screw) passing through the first mounting hole and the second mounting hole.

[0063] The application also does not limit the connection method between the metal tea basket 3 and the metal lower cover 2. In one embodiment, one of the metal tea basket 3 and the metal lower cover 2 is provided with a magnetic part to install the metal tea basket 3 on the metal lower cover 2 by magnetic attraction. In another embodiment, the metal lower cover 2 is provided with a downwardly extending protruding part, and the metal tea basket 3 is in interference fit with the protruding part to install the metal tea basket 3 on the metal lower cover 2 by friction.

[0064] The setting position of the avoiding gap and the filling part in the application can adopt any one of the following embodiments:

[0065] Embodiment one: as Figures 2 to 4As shown, the electrode assembly comprises the anti-overflow electrode 4 and the sealing member 5 sleeved outside the anti-overflow electrode 4, the avoiding gap comprises a first gap 201 towards the inside of the kettle body 10, the filling part has a first filling part 101 matched with the first gap 201, the anti-overflow electrode 4 is arranged in the first filling part 101, the sealing member 5 is in abutting sealing with the lower end surface of the first filling part 101, and the first filling part 101 is provided with an extension part 103 exposed between the upper part of the sealing member 5 and the circumferential edge of the first gap 201 to form a partition area.

[0066] In the first embodiment, the sealing member 5 is arranged outside the anti-overflow electrode 4, and the sealing member 5 is in abutting sealing with the lower end surface of the first filling part 101 arranged in the plastic cover 1, so that the condensed water accumulated on the first filling part 101 cannot enter the inside of the sealing member 5 through the joint position between the first filling part 101 and the sealing member 5 to contact the anti-overflow electrode 4 in use, and the anti-overflow failure phenomenon is avoided. The extension part 103 exposed between the upper part of the sealing member 5 and the circumferential edge of the first gap 201 is arranged on the first filling part 101, which can increase the creepage distance of the current. When the surface of the metal lower cover 2, the surface of the extension part 103, and the surface of the sealing member 5 all accumulate condensed water, and the condensed water attached to the three surfaces is connected to form a sheet of water film, due to the increase of the creepage distance, the resistance to the current flow will also increase accordingly, so that it is difficult for the current to form an effective conduction path between the anti-overflow electrode 4 and the metal lower cover 2, thereby greatly reducing the probability of electrical conduction between the metal lower cover 2 and the anti-overflow electrode 4, and further reducing the probability of anti-overflow failure.

[0067] In a preferred embodiment, as shown in Figure 3 and Figure 4 As shown, the sealing member 5 comprises a sealing body 501 and an upper sealing part 502 arranged on the upper part of the sealing body 501, and a lower clamping member 6 is arranged between the sealing member 5 and the anti-overflow electrode 4. The upper sealing part 502 is clamped and fixed between the first filling part 101 and the lower clamping member 6 to prevent the sealing member 5 from falling off the anti-overflow electrode 4, and to ensure the stability and reliability of the sealing.

[0068] Further, as shown in Figure 4 The upper sealing part 502 is provided with a sealing lip abutting and sealing with the lower end surface of the first filling part 101, so as to further improve the sealing performance between the sealing member 5 and the first filling part 101.

[0069] It should be noted that the first embodiment is not limited to the shape of the first gap 201 and the first filling part 101 matched therewith. For example, it can be circular, square, triangular or other special-shaped structures.

[0070] In the first embodiment, the material of the extension part 103 and the sealing member 5 can adopt any one of the following embodiments:

[0071] Embodiment 1: The extension 103 and the sealing member 5 are made of the same insulating material.

[0072] Embodiment 2: The extension 103 and the sealing member 5 are made of different insulating materials. By designing the extension 103 and the sealing member 5 to be made of different insulating materials, the overall insulation performance can be effectively improved, further increasing the transmission resistance of the current between the anti-overflow electrode 4 and the metal lower cover 2, thereby further reducing the probability of electrical conduction between the metal lower cover 2 and the anti-overflow electrode 4.

[0073] Specifically, the embodiment 2 can adopt any one of the following examples:

[0074] Example 1: The first filling part 101 is formed separately from the plastic cover 1, and the first filling part 101 is integrally formed with the extension 103, i.e., the first filling part 101 and the extension 103 are made of the same material, which is different from the material of the plastic cover 1. Moreover, the extension 103 and the sealing member 5 are made of different insulating materials. For example, the extension 103 is made of aluminum oxide ceramic, and the sealing member 5 is made of silicone.

[0075] Example 2: The first filling part 101 is formed separately from the plastic cover 1, and the first filling part 101 is formed separately from the extension 103, i.e., the first filling part 101, the extension 103, and the plastic cover 1 are made of different materials, and the extension 103 and the sealing member 5 are made of different insulating materials.

[0076] Example 3: The extension 103, the first filling part 101, and the plastic cover 1 are integrally formed, and the sealing member 5 is a silicone member. That is, the extension 103 and the first filling part 101 are both plastic. The example 3 sets the extension 103, the first filling part 101, and the plastic cover 1 as an integrally formed structure, which not only reduces the processing difficulty and saves the assembly steps, but also enables the extension 103, the first filling part 101, and the plastic cover 1 to be tightly combined to form a whole, thereby enhancing the stability of the structure and reducing the risk of anti-overflow failure caused by loosening or separation of individual components. The use of a silicone member for the sealing member 5 can not only ensure a tighter fit between the sealing member 5 and the first filling part 101 by taking advantage of the good elasticity of silicone, thereby ensuring the stability of the sealing performance, but also effectively prevent the current from passing through the surface thereof by taking advantage of the high resistivity of silicone, thereby further reducing the risk of anti-overflow failure.

[0077] However, it should be noted that the sealing member 5 does not necessarily have to be made of silicone material, but can also be made of other materials that have both flexibility and high resistivity and good insulation performance, such as polytetrafluoroethylene, ethylene-propylene rubber, or nitrile rubber.

[0078] As a preferred embodiment of the present embodiment, Figure 3and Figure 4 As shown, the position height of the lower end surface of the first filling part 101 is lower than the position height of the lower end surface of the region adjacent to the first gap 201 of the metal lower cover 2, so as to form a drip water edge 104 between the first filling part 101 and the metal lower cover 2. According to the Coanda effect, the fluid has a tendency to flow along the convex surface. In this embodiment, by designing the position height of the first filling part 101 and the first gap 201, the drip water edge 104 can be formed between the first filling part 101 and the metal lower cover 2, and the condensed water formed on the lower surface of the metal lower cover 2 during the use of the liquid heater has a tendency to drip along the drip water edge 104 to the kettle body 10, thereby reducing the probability of forming a continuous water film between the metal lower cover 2 and the first filling part 101, and further reducing the probability of electrical conduction between the metal lower cover 2 and the anti-overflow electrode 4.

[0079] Further, the drip water edge 104 extends in an arc shape from the end abutting the metal lower cover 2 to the end away from the metal lower cover 2, so as to facilitate the dripping of water.

[0080] Embodiment two: as shown in Figures 5 to 7 As shown, the electrode assembly includes the anti-overflow electrode 4 and the electrical connecting piece 7 electrically connected with the anti-overflow electrode 4, the electrical connecting piece 7 can be electrically conductive with the conductive piece provided on the kettle body 10, the avoidance gap includes the second gap 202 towards the handle side of the kettle body 10, the filling part is provided with the second filling part 102 matched with the second gap 202, and the electrical connecting piece 7 is provided on the second filling part 102; the outer side of the plastic cover 1 is covered with the anti-falling piece 12 extending downward and wrapping the metal lower cover 2, the anti-falling pieces 12 are arranged at intervals along the circumference of the plastic cover 1, so as to form an avoidance area avoiding the second filling part 102 between any two adjacent anti-falling pieces 12.

[0081] In this embodiment two, by arranging the electrical connecting piece 7 on the second filling part 102, the condensed water attached to the metal lower cover 2 during use can be effectively isolated from contacting the electrical connecting piece 7, thereby avoiding the problem of anti-overflow detection failure caused by the contact and conduction of the condensed water and the electrical connecting piece 7. By wrapping the metal lower cover 2 with the anti-falling piece 12 extending downward on the outer side of the plastic cover 1, on the one hand, the metal lower cover 2 can be effectively prevented from loosening or shifting during use, thereby ensuring the stability of the installation of the metal lower cover 2, and on the other hand, when the kettle cover is closed to the kettle body 10, the setting of the anti-falling piece 12 can also increase the friction between the kettle cover and the kettle body 10, thereby avoiding the spilling of water caused by the falling of the kettle cover during pouring. By arranging the anti-falling pieces 12 at intervals along the circumference of the plastic cover 1, an avoidance area avoiding the second filling part 102 can be formed between any two adjacent anti-falling pieces 12. In this way, even if condensed water is attached to the anti-falling piece 12 during use, the condensed water attached to the anti-falling piece 12 can also be prevented from contacting the electrical connecting piece 7, thereby further reducing the probability of anti-overflow failure.

[0082] In the second embodiment, the specific arrangement of the anti-disengagement member 12 can adopt any one of the following embodiments.

[0083] Embodiment 3: As shown in the figure, the kettle cover further comprises an upper cover 8, the upper cover 8, the plastic cover 1 and the metal lower cover 2 are arranged in sequence from top to bottom, a ring-shaped sealing ring 11 is arranged between the upper cover 8 and the plastic cover 1, and the anti-disengagement member 12 is integrally formed with the sealing ring 11. Figure 7

[0084] In the third embodiment, the sealing ring 11 is arranged between the upper cover 8 and the plastic cover 1, which can effectively prevent water from the outside from entering the inside of the upper cover 8 and the plastic cover 1 through the joint gap therebetween during use or cleaning, thereby reducing the failure of the anti-spilling function. The design that the anti-disengagement member 12 is integrally formed with the sealing ring 11 not only simplifies the production process and reduces the assembly steps, but also enhances the stability of the overall structure. In combination with the design that the anti-disengagement member 12 and the electrical connecting member 7 are arranged to avoid each other, the probability of contact between the electrical connecting member 7 and the liquid attached to the sealing ring 11 can be reduced on the basis of the ring-shaped sealing ring 11, thereby reducing the probability of failure of the anti-spilling function.

[0085] Embodiment 4: The kettle cover in the fourth embodiment is not shown, and is different from the third embodiment. The kettle cover in the fourth embodiment does not have an upper cover, but only has a plastic cover and a metal lower cover. The anti-disengagement member has an upper positioning portion and a lower positioning portion. The plastic cover is provided with a mounting groove matched with the upper positioning portion. The upper positioning portion is assembled in the mounting groove in an interference fit. The lower positioning portion is provided with an upper clamping groove facing the plastic cover and opening upward, and a lower clamping groove facing the metal lower cover and opening downward. The plastic cover is provided with an upper clamping edge extending downward and extending into the upper clamping groove. The metal lower cover is provided with a lower clamping edge extending upward and extending into the lower clamping groove. The lower positioning portion is clamped and fixed between the upper clamping edge and the lower clamping edge, so as to improve the stability of the installation of the anti-disengagement member on the plastic cover and the metal lower cover.

[0086] Embodiment three: The electrode assembly comprises an anti-spilling electrode 4 and an electrical connecting member 7 electrically connected with the anti-spilling electrode 4. The electrical connecting member 7 can be electrically connected with the conductive member arranged on the kettle body 10. Different from the first gap 201 arranged to avoid the anti-spilling electrode 4 in the first embodiment and the second gap 202 arranged to avoid the electrical connecting member 7 in the second embodiment, in the third embodiment, as shown in the figures, Figure 8 and Figure 9 the avoiding gap comprises the first gap 201 and the second gap 202 which are communicated. The filling portion comprises a first filling portion 101 matched with the first gap 201 and a second filling portion 102 matched with the second gap 202. The anti-spilling electrode 4 is installed in the first filling portion 101, and the electrical connecting member 7 is installed in the second filling portion 102. The first filling portion 101 and the second filling portion 102 are connected.

[0087] ​In the third embodiment, the anti-overflow electrode 4 is arranged in the first filling part 101, the electrical connecting part 7 is arranged in the second filling part 102, and the first filling part 101 and the second filling part 102 are connected. In this way, the bottom of the second filling part 102 is prevented from directly contacting the lower surface of the metal lower cover 2, and the probability of electrical conduction between the electrical connecting part 7 and the metal lower cover 2 is further reduced. At the same time, the probability of electrical conduction between the anti-overflow electrode 4 and the metal lower cover 2 is also reduced. Compared with the technical solutions in which the anti-overflow electrode 4 is arranged in the filling part or the electrical connecting part 7 is arranged in the filling part, the probability of anti-overflow failure of the electrode assembly is further improved. In addition, the connection between the first filling part 101 and the second filling part 102 can simplify the design difficulty and processing difficulty of the metal lower cover 2 and the plastic cover 1.

[0088] As a preferred embodiment of the third embodiment, as shown in Figure 9 The first filling part 101 and the second filling part 102 are connected to form an approximately L-shaped structure. In this way, the structure design of the plastic cover 1 can be further simplified while reducing the probability of anti-overflow failure.

[0089] In the third embodiment, the specific composition of the first filling part 101, the second filling part 102, and the plastic cover 1 can adopt any one of the following examples:

[0090] Example 4: The first filling part 101, the second filling part 102, and the plastic cover 1 are integrally formed. Arranging the first filling part 101, the second filling part 102, and the plastic cover 1 as an integrally formed structure not only reduces the processing difficulty and saves the assembly step, but also enables the first filling part 101, the second filling part 102, and the plastic cover 1 to be tightly combined to form a whole, thereby enhancing the stability of the structure and reducing the risk of anti-overflow failure caused by loosening or separation of individual components.

[0091] Example 5: The first filling part 101 and the second filling part 102 are separately formed, and the first filling part 101 and the second filling part 102 are made of different insulating materials. By separately forming the first filling part 101 and the second filling part 102, and by using different insulating materials, the advantages of different insulating materials in terms of mechanical strength, flexibility, and wear resistance can be utilized. Through reasonable material selection, the overall mechanical performance of the structure can be optimized. For example, during long-term use, the lid will be repeatedly lifted or placed on the pot body 10. Since the second filling part 102 is in contact with the side wall of the pot body 10, its wear resistance must be superior to that of the first filling part 101 to meet the service life requirements. Furthermore, by designing the first filling part 101 and the second filling part 102 to be made of different insulating materials, the overall insulation performance can be effectively improved, further increasing the transmission resistance of current between the metal lower cover 2 and the electrical connector 7, thereby further reducing the probability of electrical conduction between the metal lower cover 2 and the electrical connector 7. For example, the first filling part 101 is made of polytetrafluoroethylene, and the second filling part 102 is made of alumina ceramic.

[0092] The electrode assembly includes an anti-overflow electrode 4 and an electrical connector 7 electrically connected to the anti-overflow electrode 4. The electrical connector 7 is electrically conductive to a conductive component disposed on the kettle body 10. A cavity 9 is provided above the plastic cap 1 to accommodate the upper end of the anti-overflow electrode 4 and one end of the electrical connector 7. The anti-overflow electrode 4 is connected to the electrical connector 7 through a conductive structure (e.g., a metal sheet).

[0093] To reduce the probability of external water contacting the upper end of the overflow prevention electrode 4 or one end of the electrical connector 7, and further reduce the probability of overflow prevention failure, this application may adopt any of the following embodiments:

[0094] Implementation Method Four: (e.g.) Figure 7 As shown, the liquid heater also includes a cover plate 105 that seals against the plastic cap 1 to form a cavity 9. This fourth embodiment is applicable to situations where the kettle lid only has a plastic cap 1 and a metal lower cap 2. By adding a cover plate 105 separately to the plastic cap 1, the cavity 9 is shielded and sealed.

[0095] Embodiment 5: This embodiment 5 is not illustrated. In this embodiment 5, the lid also includes an upper cover located above the plastic lid. The upper cover has a surrounding plate that extends downward to seal against the plastic lid and cooperate to form a cavity.

[0096] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0097] The various embodiments in the specification are described in progressive manner, and the same or similar parts between the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments.

[0098] The above merely describes the embodiments of the present application, and is not intended to limit the present application. The technical features or structures in the foregoing different embodiments can be combined as needed to form other specific technical solutions. Various modifications and changes can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A liquid heater comprising a body, a lid and a metal tea basket, the lid comprising a plastic lid and a metal lower lid, the metal tea basket being detachably mounted to the metal lower lid, characterized in that, The metal lower cover is provided with an avoiding gap, the plastic cover is provided with a filling part which is matched with the avoiding gap to fill the avoiding gap, and an electrode assembly is arranged at the filling part.

2. The liquid heater according to claim 1, wherein, The electrode assembly comprises an anti-overflow electrode and a sealing member sleeved outside the anti-overflow electrode, the avoiding gap comprises a first gap facing the inside of the kettle body, the filling part has a first filling part matched with the first gap, the anti-overflow electrode is arranged at the first filling part, the sealing member is in abutting sealing with the lower end surface of the first filling part, and the first filling part is provided with an extension part exposed between the upper part of the sealing member and the circumferential edge of the first gap to form a partition area.

3. The liquid heater according to claim 2, wherein, The extension part and the sealing member are structures made of different insulating materials.

4. The liquid heater according to claim 3, wherein, The extension part, the first filling part and the plastic cover are integrally formed, and the sealing member is a silica gel member.

5. The liquid heater according to claim 2, wherein, The position height of the lower end surface of the first filling part is lower than the position height of the lower end surface of the adjacent area of the metal lower cover and the first gap, so as to form a drip water along between the first filling part and the metal lower cover.

6. The liquid heater according to claim 1, wherein, The electrode assembly comprises an anti-overflow electrode and an electric connecting member electrically connected with the anti-overflow electrode, the electric connecting member can be electrically conducted with a conductive member arranged at the kettle body, the avoiding gap comprises a second gap facing the handle side of the kettle body, the filling part is provided with a second filling part matched with the second gap, and the electric connecting member is arranged at the second filling part; the plastic cover is wrapped with an anti-falling member extending downward and wrapping the metal lower cover, the anti-falling members are arranged along the circumference of the plastic cover, and an avoiding area avoiding the second filling part is formed between adjacent two anti-falling members.

7. The liquid heater according to claim 6, wherein, The kettle cover further comprises an upper cover, the upper cover, the plastic cover and the metal lower cover are arranged in sequence from top to bottom, a ring-shaped sealing ring is arranged between the upper cover and the plastic cover, and the anti-falling member is integrally formed with the sealing ring.

8. The liquid heater according to claim 1, wherein, The electrode assembly comprises an anti-overflow electrode and an electric connecting member electrically connected with the anti-overflow electrode, the electric connecting member can be electrically conducted with a conductive member arranged at the kettle body, the avoiding gap comprises a first gap and a second gap which are communicated, the filling part comprises a first filling part matched with the first gap and a second filling part matched with the second gap, the anti-overflow electrode is arranged at the first filling part, the electric connecting member is arranged at the second filling part, and the first filling part and the second filling part are connected.

9. The liquid heater according to claim 8, wherein, The first filling part, the second filling part and the plastic cover are integrally formed; or, The first filling part and the second filling part are separately formed, and the first filling part and the second filling part are made of different insulating materials.

10. The liquid heater according to claim 1, wherein The electrode assembly comprises an anti-overflow electrode and an electrical connector electrically connected with the anti-overflow electrode, the electrical connector can be electrically connected with a conductive part arranged on the kettle body, and an upper end of the anti-overflow electrode and one end of the electrical connector are arranged in a cavity of the plastic cover; The liquid heater further comprises a cover plate sealingly abutting against the plastic cover to cooperatively form the cavity; or the kettle cover further comprises an upper cover located above the plastic cover, and the upper cover has a surrounding plate extending downward to sealingly abut against the plastic cover and cooperatively form the cavity.

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