Electric kettle with heat preservation and anti-toppling functions

Abstract

The utility model discloses a kind of electric kettle with heat preservation and anti-toppling function, including heat preservation kettle body, heat preservation kettle cover, temperature control switch, anti-toppling valve, heat preservation kettle cover is closed the upper end of heat preservation kettle body;Temperature control switch is set to heat preservation kettle body, temperature control switch is connected with heat preservation kettle body inside by steam passage, wherein, steam passage is at least partially set to heat preservation kettle cover, steam inlet of steam passage is set to heat preservation kettle cover;Anti-toppling valve is set to steam inlet of steam passage;Wherein, heat preservation kettle cover is provided with automatic valve, automatic valve is at least partially located in steam passage, automatic valve can automatically open steam passage when the pressure difference inside and outside heat preservation kettle body is greater than preset value, automatic valve can automatically close steam passage when the pressure difference inside and outside heat preservation kettle body is less than preset value.The electric kettle provided by the utility model can ensure heat preservation performance while achieving anti-toppling function.

Description

Technical Field

[0001] This utility model relates to the field of electric kettle technology, and in particular to an electric kettle with heat preservation and anti-tipping functions. Background Technology

[0002] Some existing electric kettles use a steam channel anti-tipping valve structure to prevent tipping and leakage. However, when these kettles are used upright normally, the anti-tipping valve remains open, causing the steam channel to remain open. This results in the kettle being unable to effectively maintain the internal temperature. Therefore, existing electric kettles cannot guarantee heat preservation performance while achieving the anti-tipping function. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electric kettle with heat preservation and anti-tipping functions, which can ensure heat preservation performance while achieving the anti-tipping function.

[0004] An electric kettle with heat preservation and anti-tipping functions according to an embodiment of the present invention includes a heat preservation body, a heat preservation lid, a temperature control switch, and an anti-tipping valve. The heat preservation lid closes the upper end of the heat preservation body. The temperature control switch is disposed in the heat preservation body and is connected to the interior of the heat preservation body through a steam channel. The steam channel is at least partially disposed in the heat preservation lid, and the steam inlet of the steam channel is disposed in the heat preservation lid. The anti-tipping valve is disposed at the steam inlet of the steam channel. The heat preservation lid is provided with an automatic valve, which is at least partially located in the steam channel. The automatic valve can automatically open the steam channel when the pressure difference between the inside and outside of the heat preservation body is greater than a preset value, and the automatic valve can automatically close the steam channel when the pressure difference between the inside and outside of the heat preservation body is less than the preset value.

[0005] The electric kettle according to the embodiments of this utility model has at least the following beneficial effects: The electric kettle provided by this utility model is equipped with an anti-tipping valve at the steam inlet of the steam channel. Thus, the electric kettle can close the steam channel using the anti-tipping valve to prevent water leakage from the steam channel when tipped over, thereby achieving the anti-tipping function. At the same time, the electric kettle is equipped with an automatic valve to automatically open and close the steam channel according to the pressure difference between the inside and outside of the kettle. Thus, when the water in the kettle boils and the pressure difference between the inside and outside of the kettle exceeds a preset value, the automatic valve can automatically open the steam channel so that the high-temperature steam triggers the temperature control switch to stop the electric kettle from working. After the internal pressure of the kettle is released and the pressure difference between the inside and outside of the kettle is less than the preset value, the automatic valve can close the steam channel again. At this time, the kettle cannot exchange heat with the outside air through the steam channel, thereby ensuring the heat preservation performance.

[0006] According to some embodiments of the present invention, the steam channel includes a first mounting cavity and a first connecting hole. The first connecting hole is opened on the lower side wall of the first mounting cavity and communicates with the interior of the thermos body. The automatic valve is disposed in the first mounting cavity and is used to automatically open and close the first connecting hole.

[0007] According to some embodiments of the present invention, the automatic valve includes a gravity valve plate, the first end of which is rotatably mounted in the first mounting cavity, and the second end of which is located above the first connecting hole. The gravity valve plate can automatically approach and close the first connecting hole when the pressure difference between the inside and outside of the thermos is less than a preset value, and the gravity valve plate can automatically rotate away from the first connecting hole when the pressure difference between the inside and outside of the thermos is greater than a preset value.

[0008] According to some embodiments of the present invention, a limiting structure is provided between the gravity valve plate and the side wall of the first mounting cavity. The limiting structure is used to limit the angle at which the gravity valve plate rotates relative to the first connecting hole to be less than 90 degrees; and / or, the distance between the upper side wall of the first mounting cavity and the rotation axis of the gravity valve plate is less than the width between the second end of the gravity valve plate and the rotation axis of the gravity valve plate.

[0009] According to some embodiments of the present invention, the limiting structure includes a limiting protrusion, which is disposed at the first end of the gravity valve plate and protrudes in a direction away from the first connecting hole.

[0010] According to some embodiments of the present invention, the steam inlet of the steam channel is located at the lower end of the connecting hole, and the anti-tipping valve is located below the connecting hole.

[0011] According to some embodiments of this utility model, the anti-tipping valve includes a valve shell and a valve ball. A second mounting cavity is provided inside the valve shell. The second mounting cavity is located below the first communicating hole and communicates with the first communicating hole. A guide surface is provided on the side wall of the second mounting cavity. The guide surface is an inclined surface or an arc surface. An air inlet is opened on the side wall of the second mounting cavity. The valve ball is movably installed in the second mounting cavity. When the thermos is tilted, the valve ball can move along the guide surface to approach the first communicating hole to block the first communicating hole.

[0012] According to some embodiments of this utility model, the anti-tipping valve includes a valve shell, a gravity block, a valve stem, and a spring. A second mounting cavity is provided inside the valve shell, located below and communicating with the first communicating hole. A guide surface, which is either an inclined surface or an arc surface, is provided on the side wall of the second mounting cavity. A second communicating hole, communicating with the second mounting cavity, is opened at the lower end of the valve shell. The valve stem passes through the second communicating hole, and a sealing element is provided at the lower end of the valve stem. The spring is installed in the second communicating hole and sleeved on the valve stem. The gravity block is movably disposed in the second mounting cavity. When the thermos is in an upright state, the gravity block can press against the valve stem to move the sealing element away from the second communicating hole. When the thermos is in a tilted state, the spring can drive the valve stem to move the sealing element closer to and close the second communicating hole.

[0013] According to some embodiments of the present invention, the thermos lid is detachably installed on the upper end of the thermos body, the thermos lid is provided with a water outlet channel, the thermos lid is provided with a water outlet switch, and the water outlet switch is used to open and close the water outlet channel.

[0014] According to some embodiments of the present invention, the bottom of the thermos body is provided with a heating device and an electrical connection structure, and the temperature control switch is used to control the circuit connection between the heating device and the electrical connection structure.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of an electric kettle with heat preservation and anti-tipping functions according to an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 An exploded view of an automatic valve and an anti-tipping valve for an electric kettle with heat preservation and anti-tipping functions is shown. Figure 4 for Figure 1 The diagram shows the external appearance of an electric kettle with heat preservation and anti-tipping functions.

[0017] Figure label: The thermos body 100, thermos lid 200, water outlet channel 210, water outlet switch 220, anti-tipping valve 300, valve shell 310, second mounting cavity 311, guide surface 3111, air inlet 312, valve ball 320, automatic valve 400, gravity valve plate 410, limit protrusion 420, temperature control switch 500, power connection structure 600, heating device 700, power base 800, second coupler 810, steam channel 900, first mounting cavity 910, first connecting hole 920, steam inlet 921, connecting pipe 930. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figure 1 , Figure 2An electric kettle with heat preservation and anti-tipping functions according to an embodiment of the present invention includes a thermos body 100, a thermos lid 200, a temperature control switch 500, and an anti-tipping valve 300. The thermos lid 200 closes the upper end of the thermos body 100. The temperature control switch 500 is disposed in the thermos body 100 and is connected to the interior of the thermos body 100 through a steam channel 900. The steam channel 900 is at least partially disposed in the thermos lid 200, and the steam channel 900... An air inlet 921 is located on the thermos lid 200; an anti-tipping valve 300 is located at the steam inlet 921 of the steam channel 900; wherein, the thermos lid 200 is provided with an automatic valve 400, which is at least partially located within the steam channel 900. The automatic valve 400 can automatically open the steam channel 900 when the pressure difference between the inside and outside of the thermos body 100 is greater than a preset value, and can automatically close the steam channel 900 when the pressure difference between the inside and outside of the thermos body 100 is less than a preset value.

[0023] During the boiling process of the electric kettle, before the water inside the thermos body 100 boils, the internal pressure of the thermos body 100 is the same as or close to the external pressure. The pressure difference between the inside and outside of the thermos body 100 is very small or even zero before the water boils, and will not reach the preset value. After the water inside the thermos body 100 boils, due to the generation of a large amount of water vapor, the internal pressure of the thermos body 100 rises rapidly, so that the pressure difference between the inside and outside of the thermos body 100 can be greater than the preset value. At this time, the pressure difference between the inside and outside of the thermos body 100 can drive the automatic valve 400 to open the steam passage 900. Thus, on the one hand, water vapor can reach the temperature control switch 500 through the steam passage 900 to trigger the electric kettle to stop heating. On the other hand, the internal pressure of the thermos body 100 can be released through the steam passage 900 to avoid the situation of excessive internal pressure of the thermos body 100.

[0024] In practical implementation, since the electric kettle only needs to boil the water, the aforementioned preset value can be preset to 0.02 standard atmospheres. Of course, if it is necessary to increase the boiling temperature, the preset value can be increased, as long as it is within the tolerance range of the thermos body 100. Then, based on the preset value, the automatic valve 400, steam channel 900, etc., are designed so that the automatic valve 400 can open the steam channel 900 when the pressure difference inside and outside the thermos body 100 is greater than the preset value. The specific design process can refer to the pressure valve design of existing pressure cookers, which will not be detailed here.

[0025] The electric kettle provided by this utility model has an anti-tipping valve 300 installed at the steam inlet 921 of the steam channel 900. This allows the kettle to close the steam channel 900 in case of tipping, preventing water leakage and thus achieving an anti-tipping function. Simultaneously, the kettle is equipped with an automatic valve 400 that automatically opens and closes the steam channel 900 based on the pressure difference between the inside and outside of the insulated kettle body 100. When the water in the insulated kettle body 100 boils and the pressure difference exceeds a preset value, the automatic valve 400 automatically opens the steam channel 900, triggering the temperature control switch 500 to stop the kettle from operating due to the high-temperature steam. Once the internal pressure of the insulated kettle body 100 is released and the pressure difference falls below the preset value, the automatic valve 400 closes the steam channel 900 again. At this point, the insulated kettle body 100 cannot exchange heat with the outside environment through the steam channel 900, thus ensuring its heat preservation performance.

[0026] Reference Figure 1 and Figure 2 According to some embodiments of this utility model, the steam channel 900 includes a first mounting cavity 910 and a first connecting hole 920. The first connecting hole 920 is formed in the lower side wall of the first mounting cavity 910 and communicates with the interior of the thermos body 100. An automatic valve 400 is disposed in the first mounting cavity 910 and is used to automatically open and close the first connecting hole 920. Therefore, the entire automatic valve 400 is located within the steam channel 900, which can prevent high-temperature steam from being released from the automatic valve 400 to the outside of the lid, thus avoiding scalding accidents and improving safety.

[0027] Reference Figure 2 and Figure 3According to some embodiments of this utility model, the automatic valve 400 includes a gravity valve plate 410. The first end of the gravity valve plate 410 is rotatably mounted in the first mounting cavity 910, and the second end of the gravity valve plate 410 is located above the first connecting hole 920. The gravity valve plate 410 can automatically approach and close the first connecting hole 920 when the pressure difference between the inside and outside of the thermos body 100 is less than a preset value, and can automatically rotate away from the first connecting hole 920 when the pressure difference between the inside and outside of the thermos body 100 is greater than the preset value. In specific implementation, adjusting the weight of the gravity valve plate 410 and the size of the first connecting hole 920 can change the pressure difference between the inside and outside of the thermos body 100 required for the gravity valve plate 410 to automatically open, i.e., change the preset value. Therefore, only a limited number of experimental adjustments to the weight of the gravity valve plate 410 and the size of the first connecting hole 920 are needed to make the automatic valve 400 meet the usage requirements. Specifically, when the first connecting hole 920 increases, the pressure difference between the inside and outside of the thermos body 100 required to drive the gravity valve plate 410 to rotate decreases; conversely, when the first connecting hole 920 decreases, the pressure difference between the inside and outside of the thermos body 100 required to drive the gravity valve plate 410 to rotate increases. When the weight of the gravity valve plate 410 increases, the pressure difference between the inside and outside of the thermos body 100 required to drive the gravity valve plate 410 to rotate increases; when the weight of the gravity valve plate 410 decreases, the pressure difference between the inside and outside of the thermos body 100 required to drive the gravity valve plate 410 to rotate decreases. Through these settings, the gravity valve plate 410 can reset itself by its own weight, eliminating the need for a reset spring. This makes the automatic valve 400 simple in structure, reliable in operation, easy to design, and low in cost.

[0028] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, a limiting structure is provided between the gravity valve plate 410 and the side wall of the first mounting cavity 910. The limiting structure is used to limit the angle at which the gravity valve plate 410 rotates relative to the first connecting hole 920 to be less than 90 degrees. By adopting the above setting, the situation where the angle at which the gravity valve plate 410 rotates relative to the first connecting hole 920 rotates to be greater than 90 degrees can be avoided, thereby ensuring that the gravity valve plate 410 can work repeatedly.

[0029] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, the distance between the upper sidewall of the first mounting cavity 910 and the rotation axis of the gravity valve plate 410 is less than the width between the second end of the gravity valve plate 410 and the rotation axis of the gravity valve plate 410. By adopting the above arrangement, the situation where the gravity valve plate 410 rotates and opens at an angle greater than 90 degrees relative to the first connecting hole 920 can be avoided, thereby ensuring that the gravity valve plate 410 can operate repeatedly.

[0030] According to some embodiments of the present invention, the limiting structure includes a limiting protrusion 420, which is disposed at the first end of the gravity valve plate 410. The limiting protrusion 420 protrudes in a direction away from the first connecting hole 920. The limiting protrusion 420 can abut against the lower side wall of the first mounting cavity 910 to limit the angle of rotation of the gravity valve plate 410 relative to the first connecting hole 920 to be less than 90 degrees, thereby ensuring that the gravity valve plate 410 can work repeatedly.

[0031] In other embodiments, the automatic valve 400 described above can also be configured in other ways. For example, the automatic valve 400 can adopt a structure similar to the pressure valve of a pressure cooker: the automatic valve 400 includes a valve cap, which is disposed in the first mounting cavity 910. The side wall of the first connecting hole 920 extends upward to form a tube column. The valve cap is sleeved on the tube column. By controlling the weight of the valve cap and the size of the first connecting hole 920, the pressure difference between the inside and outside of the thermos flask 100 required to open the valve cap can be adjusted, that is, the preset value can be adjusted.

[0032] Reference Figure 1 and Figure 2 According to some embodiments of this utility model, the steam inlet 921 of the steam channel 900 is located at the lower end of the connecting hole, and the anti-tipping valve 300 is located below the connecting hole. With the above arrangement, the anti-tipping valve 300 is easier to install.

[0033] Reference Figure 2 and Figure 3 According to some embodiments of this utility model, the anti-tipping valve 300 includes a valve housing 310 and a valve ball 320. A second mounting cavity 311 is provided inside the valve housing 310. The second mounting cavity 311 is located below and communicates with the first connecting hole 920. A guide surface 3111 is provided on the side wall of the second mounting cavity 311. The guide surface 3111 is an inclined surface or an arc surface. An air inlet 312 is opened on the side wall of the second mounting cavity 311. The valve ball 320 is movably installed in the second mounting cavity 311. When the thermos flask 100 is tilted, the valve ball 320 can move along the guide surface 3111 to approach the first connecting hole 920 to block the first connecting hole 920, thereby closing the steam passage 900 and achieving the anti-tipping function. When the thermos flask 100 is in an upright state, the valve ball 320 moves away from the first connecting hole 920, thereby opening the steam passage 900. With the above configuration, the anti-tipping valve 300 has a simple structure.

[0034] It is conceivable that the aforementioned anti-tipping valve 300 can also be configured in other ways. For example, in some embodiments, the anti-tipping valve 300 includes a valve housing 310, a gravity block (not shown in the figure), a valve stem (not shown in the figure), and a spring (not shown in the figure). A second mounting cavity 311 is provided inside the valve housing 310. The second mounting cavity 311 is located below and communicates with the first communicating hole 920. A guide surface 3111 is provided on the side wall of the second mounting cavity 311. The guide surface 3111 is an inclined surface or an arc surface. A second communicating hole communicating with the second mounting cavity 311 is opened at the lower end of the valve housing 310. The valve stem passes through the second communicating hole, and there is a connection between the valve stem and the inner wall of the second communicating hole. A gap is provided for airflow. There is a communication gap between the gravity block and the inner wall of the second mounting cavity 311 for airflow. A sealing element is provided at the lower end of the valve column. The spring is installed in the second communication hole and sleeved on the valve column. The gravity block is movably disposed in the second mounting cavity 311. When the thermos body 100 is in an upright state, the gravity block can press against the valve column to make the sealing element move away from the second communication hole. Thus, the steam passage 900 is connected to the inside of the thermos body 100 through the second communication hole. When the thermos body 100 is in a tilted state, the spring can drive the valve column to move the sealing element closer to and close the second communication hole. Thus, the anti-tipping valve 300 disconnects the steam passage 900 from the inside of the thermos body 100.

[0035] Reference Figure 1 According to some embodiments of the present invention, the thermos lid 200 is detachably installed on the upper end of the thermos body 100, thereby allowing the user to remove and install the lid and then fill the thermos body 100 with water, clean it, etc.

[0036] Specifically, in some embodiments, the thermos lid 200 can be installed on the upper end of the thermos body 100 by a spiral connection; in other embodiments, the thermos lid 200 can be inserted into the upper end of the thermos body 100, and an elastic ring is provided on the outside of the thermos lid 200, and a slot is provided on the inner wall of the inlet at the upper end of the thermos body 100. The thermos lid 200 is detachably snapped into the thermos body 100 by the elastic ring being snapped into the slot.

[0037] Reference Figure 1 and Figure 4 According to some embodiments of this utility model, the thermos lid 200 is provided with a water outlet channel 210 and a water outlet switch 220, which is used to open and close the water outlet channel 210. Thus, when the electric kettle is filled with water, the entire thermos body 100 is in a closed state, effectively maintaining the temperature. When water needs to be poured out, the user can open the water outlet channel 210 by operating the water outlet switch 220 without disassembling the thermos body 100, making operation convenient.

[0038] Reference Figure 1 According to some embodiments of the present invention, a heating device 700 and a power connection structure 600 are provided at the bottom of the thermos body 100. The temperature control switch 500 is used to control the circuit connection between the heating device 700 and the power connection structure 600. The power connection structure 600 is used to connect to the external power grid so that the power grid can supply power to the heating device 700.

[0039] Reference Figure 1 In some embodiments, the power connection structure 600 may include a first coupler. In this case, the electric kettle also includes a power base 800, on which a second coupler 810 is provided. When the thermos body 100 is placed on the power base 800, the first coupler and the second coupler 810 are electrically connected separately, thereby enabling the power base 800 to supply power to the heating device 700. The steam channel 900 also includes a connecting pipe 930 disposed in the thermos body 100, and the first mounting cavity 910 is connected to the temperature control switch 500 through the connecting pipe 930.

[0040] In other embodiments, the power connection structure 600 may also include a power cord and a power plug.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electric kettle with heat preservation and anti-tipping functions, characterized in that, include: Thermos body (100); The thermos lid (200) closes the upper end of the thermos body (100); A temperature control switch (500) is disposed in the thermos body (100). The temperature control switch (500) is connected to the interior of the thermos body (100) through a steam channel (900). The steam channel (900) is at least partially disposed in the thermos lid (200), and the steam inlet (921) of the steam channel (900) is disposed in the thermos lid (200). An anti-tipping valve (300) is provided at the steam inlet (921) of the steam passage (900); The thermos lid (200) is equipped with an automatic valve (400), which is at least partially located in the steam channel (900). The automatic valve (400) can automatically open the steam channel (900) when the pressure difference between the inside and outside of the thermos body (100) is greater than a preset value, and the automatic valve (400) can automatically close the steam channel (900) when the pressure difference between the inside and outside of the thermos body (100) is less than a preset value.

2. An electric kettle with heat preservation and anti-tipping functions according to claim 1, characterized in that, The steam passage (900) includes a first mounting cavity (910) and a first connecting hole (920). The first connecting hole (920) is opened on the lower side wall of the first mounting cavity (910) and communicates with the interior of the thermos body (100). The automatic valve (400) is disposed in the first mounting cavity (910) and is used to automatically open and close the first connecting hole (920).

3. An electric kettle with heat preservation and anti-tipping functions according to claim 2, characterized in that, The automatic valve (400) includes a gravity valve plate (410), the first end of which is rotatably mounted in the first mounting cavity (910), and the second end of which is located above the first connecting hole (920). The gravity valve plate (410) can automatically approach and close the first connecting hole (920) when the pressure difference between the inside and outside of the thermos body (100) is less than a preset value. The gravity valve plate (410) can automatically rotate away from the first connecting hole (920) when the pressure difference between the inside and outside of the thermos body (100) is greater than a preset value.

4. An electric kettle with heat preservation and anti-tipping functions according to claim 3, characterized in that: A limiting structure is provided between the gravity valve plate (410) and the side wall of the first mounting cavity (910), the limiting structure being used to limit the angle at which the gravity valve plate (410) rotates relative to the first connecting hole (920) to be less than 90 degrees; and / or, The distance between the upper sidewall of the first mounting cavity (910) and the rotation axis of the gravity valve plate (410) is less than the width between the second end of the gravity valve plate (410) and the rotation axis of the gravity valve plate (410).

5. An electric kettle with heat preservation and anti-tipping functions according to claim 4, characterized in that, The limiting structure includes a limiting protrusion (420), which is disposed at the first end of the gravity valve plate (410). The limiting protrusion (420) protrudes in a direction away from the first connecting hole (920). The limiting protrusion (420) can abut against the lower side wall of the first mounting cavity (910) to limit the angle at which the gravity valve plate (410) rotates relative to the first connecting hole (920) to be less than 90 degrees.

6. An electric kettle with heat preservation and anti-tipping functions according to claim 2, characterized in that, The steam inlet (921) of the steam passage (900) is located at the lower end of the connecting hole, and the anti-tipping valve (300) is located below the connecting hole.

7. An electric kettle with heat preservation and anti-tipping functions according to claim 6, characterized in that, The anti-tipping valve (300) includes a valve housing (310) and a valve ball (320). The valve housing (310) has a second mounting cavity (311) located below and communicating with the first connecting hole (920). The side wall of the second mounting cavity (311) has a guide surface (3111), which is an inclined or arc surface. The side wall of the second mounting cavity (311) has an air inlet (312). The valve ball (320) is movably mounted in the second mounting cavity (311). When the thermos body (100) is tilted, the valve ball (320) can move along the guide surface (3111) to approach the first connecting hole (920) to block the first connecting hole (920).

8. An electric kettle with heat preservation and anti-tipping functions according to claim 6, characterized in that, The anti-tipping valve (300) includes a valve housing (310), a gravity block, a valve stem, and a spring. A second mounting cavity (311) is provided inside the valve housing (310). The second mounting cavity (311) is located below and communicates with the first communicating hole (920). A guide surface (3111) is provided on the side wall of the second mounting cavity (3111), and the guide surface (3111) is an inclined surface or an arc surface. A second communicating hole communicating with the second mounting cavity (311) is provided at the lower end of the valve housing (310). The valve stem passes through the second connecting hole, and a sealing element is provided at the lower end of the valve stem. The spring is installed in the second connecting hole and sleeved on the valve stem. The gravity block is movably disposed in the second mounting cavity (311). When the thermos body (100) is in an upright state, the gravity block can press against the valve stem to make the sealing element move away from the second connecting hole. When the thermos body (100) is in a tilted state, the spring can drive the valve stem to move the sealing element closer to and close the second connecting hole.

9. An electric kettle with heat preservation and anti-tipping functions according to claim 1, characterized in that, The thermos lid (200) is detachably installed on the upper end of the thermos body (100). The thermos lid (200) is provided with a water outlet channel (210) and a water outlet switch (220). The water outlet switch (220) is used to open and close the water outlet channel (210).

10. An electric kettle with heat preservation and anti-tipping functions according to claim 1, characterized in that, The bottom of the thermos body (100) is provided with a heating device (700) and an electrical connection structure (600). The temperature control switch (500) is used to control the circuit connection between the heating device (700) and the electrical connection structure (600).

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