Reliable electric kettle

Abstract

The utility model discloses a reliable electric kettle, and belongs to the technical field of liquid heating appliances. The electric kettle comprises a glass kettle body and a kettle bottom, an opening is formed in the lower end of the glass kettle body, an oxide layer capable of being welded to glass is arranged on the surface of the kettle bottom, and the oxide layer is welded to the lower end of the glass kettle body so as to block the opening. According to the electric kettle, the oxide layer which can be welded with the glass is arranged on the surface of the kettle bottom, so that the glass kettle body and the kettle bottom can be connected without glue, the use safety of the electric kettle is improved, and the oxide layer is directly welded with the glass, so that the number of interfaces can be reduced, and the connection reliability is ensured.

Description

TECHNICAL FIELD

[0001] The application relates to a reliable electric kettle and belongs to the technical field of liquid heating appliances. BACKGROUND

[0002] At present, glass is often used as the kettle body of an electric kettle, which can realize visualization and improve the appearance and quality of the product. However, due to the low heat transfer efficiency of glass and the fact that borosilicate glass cannot directly contact a heating disc, a metal or other high-temperature-resistant kettle bottom (a bottom fixed with a heating disc) is used at the bottom of the electric kettle, and the kettle body and the kettle bottom are usually connected and sealed by gluing. During use, the glue is soaked and boiled in high-temperature liquid and is continuously heated close to the heating disc, which produces an odor and even harmful molecules, forms a health hazard, and affects the experience of consumers.

[0003] In order to solve the above problems, patent CN221285402U proposes to increase a metal layer on the surfaces of the kettle body and the kettle bottom, and realize glue-free connection through welding of the two metal layers. On the one hand, this structure has three interfaces, and any crack or air hole in any interface will cause sealing failure; on the other hand, the metal layer is attached to the surfaces of the kettle body and the kettle bottom by PVD or sputtering, and sputtering on the surface of borosilicate glass will drop slag, and the limited thickness of the PVD deposition layer will affect the welding reliability. In summary, the connection reliability of this scheme is general, and the process is complex. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the application provides a reliable electric kettle, which can realize glue-free connection of the glass kettle body and the kettle bottom by arranging an oxide layer capable of being welded with glass on the surface of the kettle bottom, improve the use safety of the electric kettle, and reduce the number of interfaces and ensure the connection reliability due to the direct welding of the oxide layer with the glass.

[0005] The application provides a reliable electric kettle, which comprises a glass kettle body and a kettle bottom, the lower end of the glass kettle body is provided with an opening, the surface of the kettle bottom is provided with an oxide layer capable of being welded with glass, and the oxide layer is welded with the lower end of the glass kettle body to block the opening.

[0006] Optionally, the kettle bottom is made of metal, the oxide layer is a pre-oxidized metal layer obtained by pre-oxidation, and the pre-oxidized metal layer and the kettle bottom are an integral structure.

[0007] Optionally, the oxide layer is a thermal spraying transition layer or a thermal melting transition layer, and the thermal spraying transition layer and the thermal melting transition layer contain SiO2 and at least one metal oxide.

[0008] Optionally, the oxide layer is provided with a welding portion corresponding to the lower end of the glass kettle body, the surface of the welding portion is formed with a plurality of protrusions, and intercommunication locking grooves are formed between at least some adjacent protrusions.

[0009] Optionally, the end surface of at least part of the protrusion is provided with a sunken groove.

[0010] Optionally, the projection of the lower end of the glass kettle body on a horizontal plane is located in the welding portion.

[0011] Optionally, the lower end of the glass kettle body forms a spherical portion, and the spherical portion is welded with the oxide layer.

[0012] Optionally, the projection of the side wall of the glass kettle body on a horizontal plane is located in the projection range of the spherical portion on the horizontal plane.

[0013] Optionally, the ratio of the thickness of the spherical portion to the thickness of the side wall of the glass kettle body is (1.1-1.5):1, preferably 1.25:1.

[0014] Optionally, the circumferential edge of the kettle bottom is bent upward to form a bent portion, and the side wall and the end surface of the lower end of the glass kettle body are welded with the oxide layer on the surface of the bent portion, respectively.

[0015] Optionally, the top end of the bent portion is higher than the spherical portion.

[0016] Optionally, the circumferential edge of the kettle bottom is bent downward to form a stepped surface, and the side wall and the end surface of the lower end of the glass kettle body are welded with the oxide layer on the surface of the stepped surface, respectively.

[0017] Optionally, the top end of the stepped surface is higher than the spherical portion.

[0018] Optionally, the kettle bottom is provided with an annular groove, the lower end of the glass kettle body is cut into the annular groove, and the oxide layer on the inner wall surface of the annular groove is welded.

[0019] Optionally, the top end of the annular groove is higher than the spherical portion.

[0020] Optionally, the lower end of the glass kettle body extends in the direction of the opening to form a support portion, the kettle bottom is arranged in the glass kettle body and is arranged on the support portion, the lower surface of the kettle bottom is provided with an oxide layer, and the oxide layer is welded with the support portion.

[0021] Optionally, a base is further arranged below the kettle bottom, and the support portion is clamped between the base and the kettle bottom.

[0022] The beneficial effects that can be produced by the present application include but are not limited to:

[0023] 1. The reliable electric kettle provided by the present application can realize glue-free connection of the glass kettle body and the kettle bottom, improve the health and safety of the electric kettle, reduce the connection interface, increase the effective welding area, and improve the reliability and sealing performance of the connection.

[0024] 2. The reliable electric kettle provided in the present application, by forming a convex on the surface of the welding part and forming a locking groove interconnecting between adjacent convexes, both the wetting glass liquid entering the locking groove and the oxide layer are welded into shape, and the welding contact area of the welding part and the glass kettle body is increased, thereby improving the welding reliability.

[0025] 3. The reliable electric kettle provided in the present application, the spherical part is welded with the oxide layer, which can ensure sufficient welding and structural consistency, and can also play a focusing role in welding, increase the effective welding area, and improve the connection and sealing reliability.

[0026] 4. The reliable electric kettle provided in the present application, the setting of the bending part, the step surface and the annular groove can increase the welding area with the glass kettle body, improve the connection reliability, and also realize the positioning of the glass kettle body, improve the product structural consistency and the stability of the glass kettle body in the welding process, and improve the double improvement of product quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 It is a first structure schematic diagram of the electric kettle related to embodiment 1 of the present application;

[0029] Figure 2 It is a first structure schematic diagram of the electric kettle related to embodiment 1 of the present application; Figure 1 A partial enlarged view of part A provided in the first example of the welding point position in the present application;

[0030] Figure 3 It is a partial enlarged view of part A provided in the second example of the welding point position in the present application; Figure 1 A partial enlarged view of part A provided in the second example of the welding point position in the present application;

[0031] Figure 4 It is a partial enlarged view of part A provided in the third example of the welding point position in the present application; Figure 1 A partial enlarged view of part A provided in the third example of the welding point position in the present application;

[0032] Figure 5 It is a fourth structure schematic diagram of the welding part in the third example of the welding point position in the present application;

[0033] Figure 6 It is a second structure schematic diagram of the electric kettle related to embodiment 1 of the present application;

[0034] Figure 7 It is a second structure schematic diagram of the electric kettle related to embodiment 1 of the present application; Figure 6 A partial enlarged view of part B containing the bending part in the present application;

[0035] Figure 8 Another schematic view of the kettle bottom structure involved in Embodiment 1 of the present application;

[0036] Figure 9 A third schematic view of the electric kettle involved in Embodiment 1 of the present application;

[0037] Figure 10 A partial enlarged view of Part C in the present application; Figure 9

[0038] Figure 11 A fourth schematic view of the electric kettle involved in Embodiment 1 of the present application;

[0039] Figure 12 A partial enlarged view of Part D in the present application. Figure 11

[0040] List of components and reference numerals:

[0041] 10, glass kettle body; 11, spherical part; 12, supporting part; 20, kettle bottom; 21, bent part; 22, stepped surface; 23, annular groove; 30, oxide layer; 31, protrusion; 32, locking groove; 33, sunken groove; 40, welding point; 50, base. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0045] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. ​​

[0046] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated technical features. Thus, a feature defined with "first" or "second" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise explicitly and specifically defined.

[0047] In the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, 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.

[0048] In the present application, unless otherwise explicitly and specifically defined, 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 intermediate medium. In the description of the present application, 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 application, the illustrative description of the above terms is not necessarily for 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.

[0049] Reference Figures 1-12 The embodiments of the present application disclose a reliable electric kettle, comprising a glass kettle body 10 and a kettle bottom 20, the lower end of the glass kettle body 10 is provided with an opening, the surface of the kettle bottom 20 is provided with an oxide layer 30 which can be welded with glass, and the oxide layer 30 is welded with the lower end of the glass kettle body 10 to block the opening.

[0050] Reference Figure 1 Under the above arrangement, the welding point 40 is formed by welding the oxide layer 30 and the glass kettle body 10, realizing the glue-free connection of the glass kettle body 10 and the kettle bottom 20, improving the use safety of the electric kettle, the oxide layer 30 is an intermediate connecting layer of the kettle bottom 20 and the glass kettle body 10, which is integrated with the glass kettle body 10 in welding, can reduce the connecting interface, increase the effective welding area, and improve the reliability and sealing of the connection.

[0051] Specifically, the composition of the oxide layer 30 is not specifically limited, as long as it can be welded with the glass kettle body 10, and a person skilled in the art can select it according to actual needs; in addition, the material of the kettle bottom 20 is not specifically limited, and can be set as a metal material, or can be set as other materials that can fix the heating disc and are resistant to high temperature.

[0052] Specifically, the welding of the oxide layer 30 and the glass kettle body 10 includes but is not limited to laser welding, vacuum diffusion welding, brazing and other welding methods, as long as the oxide layer 30 and the glass kettle body 10 can be welded into one body and the opening can be sealed. The vacuum diffusion welding temperature is 580℃-650℃, the pressure is 4-8MPa, the time is 20-60min, and the vacuum degree is kept below 1.0*10 -3 Pa; the laser welding pulse width is less than 1ms, the average power is 1.5-3.5W, and the frequency is 20-1000kHz.

[0053] The welding point 40 formed in the above welding, the first example is only the welding of the oxide layer 30 on both sides of the glass kettle body 10, referring to Figure 2 ; the second example is the welding of the oxide layer 30 on the bottom of the glass kettle body 10, referring to Figure 3 ; the third example is the welding of the oxide layer 30 on both sides and the bottom of the glass kettle body 10, and the oxide layer 30 is provided with a plurality of protrusions 31 corresponding to the welded part of the glass kettle body 10, referring to Figure 4 .

[0054] Specifically, the oxide layer 30 is welded on the surface of the kettle bottom 20 and the lower end of the glass kettle body 10, and the specific position of the oxide layer 30 on the upper surface or the lower surface of the kettle bottom 20 needs to be set according to the position structure of the kettle bottom 20 and the glass kettle body 10. When the kettle bottom 20 is arranged below the glass kettle body 10 to block the opening, the oxide layer 30 is arranged on the upper surface of the kettle bottom 20; when the kettle bottom 20 is arranged inside the glass kettle body 10 to block the opening, the oxide layer 30 is arranged on the lower surface of the kettle bottom 20.

[0055] As a specific embodiment, the kettle bottom 20 is a metal material, and the oxide layer 30 is a pre-oxidized metal layer obtained by pre-oxidation, and the pre-oxidized metal layer and the kettle bottom 20 are an integral structure.

[0056] The expansion coefficient of the pre-oxidized metal layer is between glass and metal, which can form a bond with the oxide in the glass, improve the welding reliability of the oxide layer 30 and the glass kettle body 10; in addition, since the pre-oxidized metal layer is a gradient oxidation film formed by the metal kettle bottom 20 itself, there is no interface of dissimilar materials, which can reduce the number of interfaces and ensure the connection reliability of the oxide layer 30 and the kettle bottom 20.

[0057] The specific operation of pre-oxidizing the kettle bottom 20 of metal material to form a pre-oxidized metal layer is: pre-oxidizing the surface of the kettle bottom 20 at 950-1050°C by using N2, H2O, and H2, and maintaining for 10-20 min.

[0058] As a specific embodiment, the oxide layer 30 is a thermal spray transition layer or a thermal melt transition layer, and the thermal spray transition layer and the thermal melt transition layer contain SiO2 and at least one metal oxide.

[0059] The oxide layer 30 formed by melt spraying or thermal spraying contains a metal oxide component that can be bonded to the kettle bottom 20, and the metal oxide and SiO2 components are closer to the glass, and can be integrated with the glass during welding, which is equivalent to the oxide layer 30 being connected to the glass kettle body 10 without an interface, i.e., the glass kettle body 10 and the oxide layer 30 are connected as a whole, which can ensure the reliability of the connection.

[0060] Specifically, the metal oxide contained in the thermal spray transition layer and the thermal melt transition layer is selected from a mixture of one or more oxides of B2O3, Al2O3, Na2O, and CaO.

[0061] Reference Figure 4 As an embodiment, the oxide layer 30 is provided with a welding portion corresponding to the lower end of the glass kettle body 10, and the surface of the welding portion forms a plurality of protrusions 31, and at least part of the adjacent protrusions 31 form interlocking grooves 32 that are interconnected.

[0062] The interlocking grooves 32 refer to the grooves formed between the adjacent protrusions 31, which can accommodate the glass liquid during welding. With this arrangement, the glass liquid can enter the interlocking grooves 32, and the condensed glass liquid (as the welding point 40) can form a self-locking structure with the interlocking grooves 32, which not only ensures that the glass liquid that enters the interlocking grooves 32 is welded with the oxide layer 30, but also increases the welding contact area between the welding portion and the glass kettle body 10, thereby improving the welding reliability.

[0063] Reference Figure 5 The shape of the protrusions 31 and the shape of the interlocking grooves 32 formed thereby can be set as needed, for example, referring to Figure 5 (a), the protrusions 31 are protrusions 31 with flat upper end surfaces, and the interlocking grooves 32 formed thereby are rectangular downward extensions; for another example, referring to Figure 5 (d), the upper end surfaces of the protrusions 31 can be uneven, and the interlocking grooves 32 formed thereby can be downwardly extending trapezoids. With this arrangement, the connection surface of the condensed glass liquid and the interlocking grooves 32 is an inclined surface, which can increase the contact area between the glass liquid and the interlocking grooves 32, further improving the connection reliability.

[0064] Reference Figure 5 (b)、 Figure 5 (c)、 Figure 5 (d), as an embodiment, the end surface of the at least partially protruding 31 is provided with a sunken groove 33.

[0065] The end surface of the protrusion 31 is provided with a sunken groove 33, which can further increase the contact area of the oxide layer 30 and the glass kettle body 10, so that the glass liquid enters into the sunken groove 33 while entering into the locking groove 32, also forming a self-locking structure, which can further improve the welding reliability.

[0066] Specifically, the shape of the sunken groove 33 can be set as needed, for example, it can be set as Figure 5 (b) circular or elliptical, Figure 5 (c) inverted triangular, and can also be set as rectangular, rhombic or irregular polygon with side length greater than 3, etc.

[0067] Specifically, the formation of the above-mentioned protrusion 31, locking groove 32 and sunken groove 33 is realized by surface treatment processes such as shot blasting, sand blasting and ultrafast laser.

[0068] As an embodiment, the projection of the lower end of the glass kettle body 10 on the horizontal plane is located in the welding part.

[0069] Reference Figure 4 With this setting, it can be ensured that the lower end of the glass kettle body 10 can be completely contained in the welding part, increasing the welding area of the glass kettle body 10 and the oxide layer 30, realizing the full welding connection of the glass kettle body 10 and the oxide layer 30, and improving the welding stability.

[0070] As an embodiment, the lower end of the glass kettle body 10 forms a spherical part 11, and the spherical part 11 is welded with the oxide layer 30.

[0071] Because part of the glass of the glass kettle body 10 will melt to form glass liquid to realize welding during the welding process, the lower end of the glass kettle body 10 is formed into a spherical part 11 and welded with the oxide layer 30, which can play a role in supplementing material during welding, ensure sufficient welding and more reliable connection; secondly, it can avoid the deformation of the main body of the glass kettle body 10, ensuring the structural consistency; thirdly, the spherical part 11 plays a focusing role in some welding (such as laser welding), so that the laser beam can be focused on the contact surface of the glass kettle body 10 and the oxide layer 30 through the spherical part, thereby increasing the effective welding area and improving the connection and sealing reliability.

[0072] Reference Figures 2-4 As an embodiment, the projection of the side wall of the glass kettle body 10 on the horizontal plane is located in the projection range of the spherical part 11 on the horizontal plane.

[0073] The thickness of the spherical part 11 is greater than the thickness of the side wall of the glass kettle body 10. Since the welding process is first heated and then condensed, that is, a process of thermal expansion and cold contraction, the difference in deformation between the spherical part 11 and the glass kettle body 10 can be reduced during thermal expansion and cold contraction, and the welding strength can be improved.

[0074] As a preferred embodiment, the ratio of the thickness of the spherical part 11 to the thickness of the side wall of the glass kettle body 10 is (1.1-1.5):1, preferably 1.25:1.

[0075] Reference Figure 6 , Figure 7 As an embodiment, the circumferential edge of the kettle bottom 20 is bent upward to form a bent part 21, and the side wall and the end face of the lower end of the glass kettle body 10 are welded with the oxide layer 30 on the surface of the bent part 21.

[0076] With this arrangement, first, the oxide layer 30 and the two surfaces of the glass kettle body 10 can be welded to increase the effective welding area and the number of welding points 40, thereby improving the connection reliability. Second, the bent part 21 can be used to position the glass kettle body 10, improving the consistency of the product structure. Third, the stability of the components during welding operation can be improved, and the welding operation can be efficiently and conveniently performed, saving welding operation time and improving production efficiency.

[0077] As a preferred embodiment, the top end of the bent part 21 is higher than the spherical part 11.

[0078] This arrangement can ensure that effective welding points 40 are formed at the position where the bent part 21 is higher than the spherical part 11. Second, during the condensation process after welding, the top end of the bent part will shrink inward, encapsulating the glass liquid condensed at the welding position in the kettle bottom 20, thereby improving the connection reliability.

[0079] Reference Figure 8 As an embodiment, the circumferential edge of the kettle bottom 20 is bent downward to form a stepped surface 22, and the side wall and the end face of the lower end of the glass kettle body 10 are welded with the oxide layer 30 on the surface of the stepped surface 22.

[0080] The stepped surface 22 has the same effect as the bent part 21, that is, it can realize welding of the oxide layer 30 and the two surfaces of the glass kettle body 10, increase the number of welding points 40 and the welding reliability, and also play a positioning role to improve the consistency of the product structure, and improve the production efficiency.

[0081] As a preferred embodiment, the top end of the stepped surface 22 is higher than the spherical part 11.

[0082] The arrangement can also ensure that an effective welding point 40 is formed at the position where the step surface 22 is higher than the spherical portion 11, increase the welding area, and at the same time condense the glass liquid condensed at the welding position in the kettle bottom 20, improving the reliability of the welding.

[0083] Reference Figure 9 、 Figure 10 As an embodiment, the kettle bottom 20 is provided with an annular groove 23, and the lower end of the glass kettle body 10 is cut into the annular groove 23 and welded with the oxide layer 30 on the surface of the inner wall of the annular groove 23.

[0084] The design of the annular groove 23 can realize three-sided contact welding of the lower end of the glass kettle body 10, further increase the number of welding points 40, and firmly weld the lower end of the glass kettle body 10 in the annular groove 23, further improve the reliability and stability of the connection, and improve the product structure consistency and production efficiency.

[0085] As a preferred embodiment, the top end of the annular groove 23 is higher than the spherical portion 11.

[0086] With this arrangement, the two sides of the annular groove 23 can be welded with the spherical portion 11, increasing the number of effective welding points and the contact area of the welding, and further improving the reliability of the connection.

[0087] Reference Figure 11 、 Figure 12 As an embodiment, the lower end of the glass kettle body 10 extends in the direction of the opening to form a support portion 12, the kettle bottom 20 is arranged in the glass kettle body 10 and rests on the support portion 12, the lower surface of the kettle bottom 20 is provided with an oxide layer 30, and the oxide layer 30 is welded with the support portion 12.

[0088] With this arrangement, the oxide layer 30 is arranged on the lower surface of the kettle bottom 20, and the kettle bottom 20 is arranged inside the glass kettle body 10 through the support portion 12, realizing the sealing of the glass kettle body 10, which can improve the connection reliability and sealing of the electric kettle.

[0089] As a specific embodiment, a base 50 is further arranged below the kettle bottom 20, and the support portion 12 is clamped between the base 50 and the kettle bottom 20.

[0090] The base 50 provides support for the glass kettle body 10 and the kettle bottom 20, and clamping the support portion 12 between the base 50 and the kettle bottom 20 can further increase the sealing of the glass kettle body 10. At the same time, the arrangement of the base 50 can facilitate the placement of the heating plate or other components, improving the compactness of the structure of the electric kettle.

[0091] Specifically, the connecting mode between the base 50 and the bottom 20 of the kettle is not limited, and the connecting mode commonly used in the prior art can be used, for example, the connecting mode can be screw connection or threaded connection.

[0092] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0093] The above only describes the embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. 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 reliable electric kettle comprising a glass kettle body and a kettle bottom, a lower end of the glass kettle body being provided with an opening, characterized in that, The surface of the bottom is provided with an oxide layer which can be welded with glass, and the oxide layer is welded with the lower end of the glass body to seal the opening.

2. The reliable electric kettle according to claim 1, characterized in that, The oxide layer is provided with a welding part corresponding to the lower end of the glass body, and the surface of the welding part is provided with a plurality of protrusions, and at least part of the adjacent protrusions are provided with interlocking grooves.

3. The reliable electric kettle according to claim 2, characterized in that, The end surface of at least part of the protrusions is provided with a sunken groove.

4. The reliable electric kettle according to claim 2, wherein The projection of the lower end of the glass body on the horizontal plane is located in the welding part.

5. The reliable electric kettle according to claim 1, wherein The lower end of the glass body is provided with a spherical part which is welded with the oxide layer.

6. The reliable electric kettle according to claim 5, characterized in that The projection of the side wall of the glass body on the horizontal plane is located in the projection range of the spherical part on the horizontal plane.

7. The reliable electric kettle of claim 1, wherein The circumferential edge of the bottom is bent upward to form a bent part, and the side wall and the end surface of the lower end of the glass body are welded with the oxide layer on the surface of the bent part.

8. The reliable electric kettle of claim 1, wherein, The circumferential edge of the bottom is bent downward to form a stepped surface, and the side wall and the end surface of the lower end of the glass body are welded with the oxide layer on the surface of the stepped surface.

9. The reliable electric kettle of claim 1, wherein, The bottom is provided with an annular groove, the lower end of the glass body is cut into the annular groove, and the oxide layer on the inner wall surface of the annular groove is welded.

10. The reliable electric kettle of claim 1, wherein, The lower end of the glass body extends in the direction of the opening to form a support part, the bottom is arranged in the glass body and is arranged on the support part, the lower surface of the bottom is provided with an oxide layer, and the oxide layer is welded with the support part.

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