Base and electric kettle thereof

Abstract

The utility model discloses a base and an electric kettle thereof, the base is used for heating a kettle, the base is provided with a top surface, and a heating plate is arranged in the middle area of the top surface and used for bearing and heating the kettle; the plurality of boss parts protrude upwards from the top surface and surround the periphery of the heating disc; a first sensing piece is arranged on the upper end surface of the boss part and is used for monitoring the water temperature in the teakettle. The water temperature in the kettle can be monitored through the first induction piece located on the upper end face of the boss part, then the temperature control function of the electric kettle is achieved, and the kettle is suitable for being an all-glass body.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to a base and an electric kettle thereof. Background Art

[0002] Electric kettles are necessities in daily life and are usually composed of a base and a kettle. Currently common kettles include stainless steel kettles and semi-glass kettles. The kettle is connected to the base through a coupler set at its lower end to achieve heating and temperature control.

[0003] However, whether it is a stainless steel kettle or a semi-glass kettle, there are metal parts in contact with water when boiling water. Since the metal parts are difficult to clean, scale, tea scale and other stains are easily accumulated on the metal parts, which indirectly leads to bacterial growth and affects human health. In addition, the heated water will have a slight metallic taste, which may be perceived by users who are sensitive to water quality. In addition, the metal part makes the kettle heavier, which is not conducive to the user to hold the kettle with one hand.

[0004] Glass has stable, safe, clean physical properties and is not prone to chemical reactions with heated food, so safe and lightweight all-glass kettles are gradually becoming the mainstream in the market. However, all-glass kettles are usually placed on a heating plate on the base for heating, rather than connected to the base through a coupler, and it is difficult to install sensors on the glass, so how to control the temperature of all-glass kettles is an urgent problem to be solved. Summary of the invention

[0005] An object of the present invention is to provide a base for heating a kettle with a full glass body and for monitoring the temperature of water in the kettle.

[0006] Another object of the present invention is to provide an electric kettle which has a temperature control function and is suitable for being a full glass body.

[0007] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: a base for heating a kettle, the base having a top surface, a heating plate provided in the middle area of ​​the top surface for receiving and heating the kettle; a plurality of bosses protruding upward from the top surface and surrounding the outer circumference of the heating plate; a first sensor is provided on the upper end surface of the boss to monitor the water temperature in the kettle.

[0008] Preferably, the upper end surface of the boss portion is further provided with a second sensor to monitor the water level in the kettle.

[0009] Preferably, the first induction member and the second induction member both protrude from the upper end surface of the boss portion and are adapted to float relative to the upper end surface of the boss portion so as to come into contact with the kettle.

[0010] Preferably, the base has at least three boss portions uniformly distributed along the circumferential direction, wherein the upper end surface of one of the boss portions is provided with the first sensing element, the upper end surface of another of the boss portions is provided with the second sensing element, and the upper end surface of the remaining boss portion is protrudingly provided with an auxiliary element, and the auxiliary element is suitable for floating relative to the upper end surface of the boss portion so as to interfere with the kettle.

[0011] Preferably, a blocking portion is provided between two adjacent boss portions, the blocking portion protrudes upward from the top surface of the base and surrounds the outer circumference of the heating plate, and the inner circumferential wall surface of the blocking portion forms an angle with the horizontal plane, denoted as β, 90°≤β≤150°.

[0012] As a preference, a plurality of edge portions protrude upward from an upper end surface of the boss portion, and the edge portions are located on a side of the boss portion away from a center of the base.

[0013] Preferably, the base further comprises an anti-scalding cover, which is suitable for being placed on the base to separate the heating plate and the kettle.

[0014] As a preference, the anti-scalding cover comprises an anti-scalding panel and a supporting portion for supporting the anti-scalding panel, so that the anti-scalding panel is suspended above the heating plate, and the supporting portion is provided with a plurality of circumferentially distributed clamping portions, and the clamping portions are suitable for elastic deformation to enable the anti-scalding cover to be clamped to the base.

[0015] In order to achieve at least one of the above purposes, the technical solution adopted by the present invention is: an electric kettle, comprising: a base as described in any of the above; a kettle, wherein the kettle has a sensor control surface, when the kettle is placed on the base, the sensor control surface is opposite to the upper end surface of the boss portion of the base, and the first sensing element of the upper end surface is in contact with the sensor control surface to monitor the water temperature in the kettle.

[0016] As a preferred embodiment, the sensor-control surface divides the kettle body into a main body portion and an extension portion which are arranged upper and lower, and the radial dimension of the main body portion is larger than the radial dimension of the extension portion; the extension portion is suitable for being accommodated in the accommodating space surrounded by the boss portion, the main body portion is located above the boss portion, the sensor-control surface is arranged opposite to the upper end surface of the boss portion, and the sensor-control surface forms an angle with the horizontal plane, denoted as α, 0°≤α≤45°.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The water temperature in the kettle can be monitored by a first sensing element located on the upper end surface of the boss portion, thereby realizing a temperature control function for the all-glass kettle;

[0019] (2) The water level in the kettle body can be monitored by the second sensor located on the upper end surface of the boss portion, thereby realizing the anti-dry-boiling function of the all-glass kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an electric kettle according to some embodiments of the present application;

[0021] Figure 2 is a schematic structural diagram of a kettle according to some embodiments of the present application;

[0022] Figure 3 is a cross-sectional view of a kettle according to some embodiments of the present application;

[0023] Figure 4 is a schematic structural diagram of a base according to some embodiments of the present application;

[0024] Figure 5 is a cross-sectional view of a base according to some embodiments of the present application;

[0025] Figure 6 is a schematic diagram of a structure in which an anti-scalding cover is placed on a base according to some embodiments of the present application;

[0026] Figure 7 It is a schematic structural diagram of an anti-scalding cover according to some embodiments of the present application.

[0027] In the figure: 10, kettle; 11, kettle body; 111, sensor control surface; 112, placement surface; 113, main body; 1131, main cavity; 114, extension part; 1141, auxiliary cavity; 20, base; 21, top surface; 22, boss part; 221, upper end surface; 222, inner side wall; 223, edge part; 23, first sensing element; 24, second sensing element; 25, auxiliary part; 26, enclosure part; 261, inner peripheral wall; 27, accommodating space; 28, heating plate; 30, anti-scalding cover; 31, anti-scalding panel; 32, support part; 321, clamping part. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] An electric kettle, such as Figure 1-Figure 4 As shown, it comprises: a kettle 10 and a base 20, the kettle 10 comprises a kettle cover (not shown) and a kettle body 11 for holding water, the kettle body 11 having a sensing surface 111. The base 20 has a top surface 21, and a heating plate 28 is provided in the middle area of ​​the top surface 21 for receiving and heating the kettle 10; a plurality of bosses 22 protrude upward from the top surface 21 and surround the outer periphery of the heating plate 28. When the kettle 10 is placed on the base 20, the sensing surface 111 is opposite to the upper end surface 221 of the boss 22, and the upper end surface 221 of the boss 22 is provided with a first sensing element 23 to monitor the water temperature in the kettle body 11, thereby realizing the temperature control function of the electric kettle.

[0032] It can be understood that by arranging the first sensor 23 for monitoring the water temperature on the boss portion 22 of the base 20, it is possible to achieve the temperature control function while avoiding the installation of a sensor device on the kettle 10, thereby making the kettle 10 suitable for being a full glass body, that is, the lid and the body 11 of the kettle 10 are both made of glass, so as to avoid metal parts from contacting water and producing chemical reactions, which is beneficial to reducing the risk of heavy metals entering drinking water, so that the boiled water is safer and cleaner.

[0033] It is understandable that if Figure 2 and Figure 3 As shown, the kettle body 11 also has a placement surface 112 suitable for contacting the upper surface of the heating plate 28, that is, when the kettle 10 is placed on the base 20, the placement surface 112 of the kettle body 11 is suitable for contacting the heating plate 28 for heat conduction, and the sensing surface 111 of the kettle body 11 is suitable for being opposite to the upper end surface 221 of the boss portion 22, so that the first sensing element 23 monitors the water temperature in the kettle body 11.

[0034] In some embodiments, Figure 2 and Figure 3As shown, the sensing surface 111 divides the kettle body 11 into a main body 113 and an extension portion 114 which are arranged up and down, and the radial dimension of the main body 113 is larger than the radial dimension of the extension portion 114. The main body 113 has a main cavity 1131, and the extension portion 114 has a sub-cavity 1141 which is connected to the main cavity 1131 and is used to hold tea. In addition, the sensing surface 111 is formed at the step portion between the main body 113 and the extension portion 114, and the placement surface 112 is formed at the bottom of the extension portion 114. In other words, in the vertical direction, the sensing surface 111 of the kettle body 11 is higher than the placement surface 112, and the projection area of ​​the sensing surface 111 on the horizontal plane surrounds the periphery of the projection area of ​​the placement surface 112 on the horizontal plane.

[0035] Further, such as Figure 4-Figure 6 As shown, a receiving space 27 located above the heating plate 28 is formed between the plurality of bosses 22, that is, the upper end surface 221 of the boss 22 is higher than the upper surface of the heating plate 28, and an open receiving space 27 is formed between the inner side wall 222 of each boss 22 and the upper surface of the heating plate 28. When the kettle 10 is placed on the base 20, the extension 114 of the kettle body 11 is suitable for being accommodated in the receiving space 27, so that the placement surface 112 contacts the heating plate 28, thereby achieving heat exchange to heat the tea in the kettle 10; the sensing surface 111 extends radially outward from the upper edge of the extension 114, and is arranged opposite to the upper end surface 221 of the boss 22, so that the first sensor 23 monitors the water temperature in the kettle body 11, and the main body 113 is located above the boss 22 to hold tea.

[0036] It is understandable that when the extension 114 is accommodated in the accommodating space 27, the kettle body 11 is positioned in the horizontal direction through the cooperation between the extension 114 and the boss 22, so that the user can align the placement surface 112 with the heating plate 28 when placing the kettle 10, so that the placement surface 112 and the heating plate 28 can be fully contacted and heat exchanged. In addition, the boss 22 surrounds the outer periphery of the extension 114, so as to reduce the risk of accidental movement and tipping of the kettle 10 relative to the base 20, thereby preventing the tea from spilling and scalding the user, and preventing the kettle 10 from falling and being damaged, and further improving the safety of the electric kettle when in use.

[0037] In some embodiments, Figure 3As shown, the sensing surface 111 forms an angle with the horizontal plane, which is denoted as α, 0°≤α≤45°. It can be understood that when α=0°, the sensing surface 111 is parallel to the horizontal plane, that is, the sensing surface 111 is parallel to the placement surface 112, which is convenient for manufacturing. However, in actual use, if the water level in the kettle body 11 is lower than the sensing surface 111, some water droplets will be retained on the sensing surface 111 and cannot flow into the sub-cavity 1141 of the extension part 114, which will easily form scale on the sensing surface 111. When 0°<α≤45°, the sensing surface 111 is inclined relative to the horizontal plane, and the water droplets can easily flow along the sensing surface 111 to the sub-cavity 1141 of the extension part 114 through their own gravity, which is conducive to reducing the formation of scale and making the kettle body 11 easier to clean. In addition, when the sensing control surface 111 is tilted relative to the horizontal plane, it is beneficial to increase the angle between the peripheral wall of the extension portion 114 and the sensing control surface 111, thereby reducing stress concentration, reducing the risk of cracking at the connection between the extension portion 114 and the sensing control surface 111, and further improving the safety of the electric kettle when in use. Preferably, 5°≤α≤20°. More preferably, α=15°.

[0038] In some embodiments, Figure 4 As shown, the upper end surface 221 of the boss portion 22 is also provided with a second sensor 24 to monitor the water level in the kettle body 11, thereby realizing the anti-dry-boiling function of the electric kettle. Specifically, the second sensor 24 is located on the upper end surface 221 of the boss portion 22. When the water level in the kettle body 11 is lower than the sensing surface 111, the second sensor 24 will recognize that there is no tea in the kettle body 11, which is conducive to further controlling the heating plate 28 to stop heating, so as to prevent the temperature from rising sharply due to dry-boiling of the kettle 10, which is conducive to reducing the risk of cracking or even bursting of the full glass kettle 10, and further improving the safety of the electric kettle when in use.

[0039] It is understandable that, in actual use, when the liquid level in the kettle body 11 is lower than the sensing surface 111, there is still tea in the secondary cavity 1141 of the extension part 114, and the second sensing element 24 located at the upper end of the boss part 22 cannot sense the water level in the main cavity 1131, so it will judge that there is no tea in the kettle body 11, and further control the heating plate 28 to stop heating. At this time, the heating plate 28 still has residual heat, and the remaining tea in the extension part 114 can prevent the kettle body 11 from being dry-burned under the effect of the residual heat of the heating plate 28. In other words, the anti-dry-burning function of the electric kettle can be realized by using the structure of the kettle body 11 itself and the cooperation of the second sensing element 24, which is conducive to improving the safety of the electric kettle when in use.

[0040] In some embodiments, Figure 4-Figure 6As shown, the first sensor 23 and the second sensor 24 both protrude from the upper end surface 221 of the boss portion 22, and are suitable for floating relative to the upper end surface 221 of the boss portion 22, so as to conflict with the sensing surface 111 of the kettle body 11. It can be understood that when the first sensor 23 and the second sensor 24 are in contact with the kettle body 11, air gap interference can be avoided, thereby making the water temperature and water level measured by the first sensor 23 and the second sensor 24 more accurate, which is conducive to improving the reliability of the temperature control function and the dry-boiling prevention function of the electric kettle.

[0041] Furthermore, the tolerance of glass products is not easy to control, that is, the distance between the placement surface 112 and the sensing surface 111 of the kettle body 11 in the vertical direction is difficult to accurately control. By making the first sensing member 23 and the second sensing member 24 float relative to the upper end surface 221 of the boss portion 22, the distance between the upper surface of the heating plate 28 and the upper surface of the first sensing member 23, as well as the distance between the upper surface of the heating plate 28 and the upper surface of the second sensing member 24 can be adjusted. Therefore, when the kettle 10 is placed on the base 20, the placement surface 112 can be fitted with the heating plate 28 for heat exchange, and the sensing surface 111 can be fitted with the first sensing member 23 and the second sensing member 24 to monitor the water temperature and water level.

[0042] Specifically, the first sensing element 23 includes a shell and a temperature sensor that can float relative to the upper end surface 221 of the boss portion 22, wherein the temperature sensor can be a thermocouple sensor, a thermistor sensor, a thermistor sensor or an infrared sensor, etc.; the second sensing element 24 includes a shell and a liquid level sensor that can float relative to the upper end surface 221 of the boss portion 22, wherein the liquid level sensor can be an ultrasonic liquid level sensor or a laser liquid level sensor, etc.

[0043] It is understandable that if Figure 4 and Figure 6 As shown, the housing of the first sensor 23 and the housing of the second sensor 24 can be consistent, so that the appearance of each sensor on the base 20 is unified, which is conducive to reducing the types of parts of the electric kettle, thereby reducing the manufacturing cost. The housing of the first sensor 23 and the housing of the second sensor 24 can also be different, so as to distinguish different sensors, thereby facilitating quick identification of different sensors during installation or maintenance.

[0044] In some implementations, such as Figure 6As shown, the base 20 has at least three bosses 22 uniformly distributed along the circumferential direction, wherein the upper end surface 221 of one boss 22 is provided with a first sensor 23, the upper end surface 221 of another boss 22 is provided with a second sensor 24, and the upper end surface 221 of the remaining boss 22 is protrudingly provided with an auxiliary member 25, and the auxiliary member 25 is suitable for floating relative to the upper end surface 221 of the boss 22 to conflict with the sensing surface 111 of the kettle body 11. In other words, the upper end surface 221 of each boss 22 has a first sensor 23, a second sensor 24, or an auxiliary member 25, so that the appearance of each boss 22 is similar. Preferably, the outer shell of the first sensor 23, the outer shell of the second sensor 24 and the outer shell of the auxiliary member 25 are consistent, which is conducive to reducing the types of parts of the electric kettle, thereby reducing the manufacturing cost, and is conducive to making the appearance of each boss 22 consistent, so as to improve the symmetry of the appearance of each boss 22 on the base 20.

[0045] In a specific embodiment, Figure 6 As shown, the base 20 has three boss portions 22 uniformly distributed along the circumferential direction, wherein a first sensor 23 is provided in the middle area of ​​the upper end surface 221 of one boss portion 22 for monitoring the water temperature in the kettle body 11; a second sensor 24 is provided in the middle area of ​​the upper end surface 221 of another boss portion 22 for monitoring the water level in the kettle body 11; an auxiliary component 25 is provided in the middle area of ​​the upper end surface 221 of the remaining boss portion 22; wherein, the outer shell of the auxiliary component 25 is consistent with the outer shell of the first sensor 23 and the outer shell of the second sensor 24, and each outer shell extends in an arc shape along the extension direction of the upper end surface 221 of the boss portion 22, which is beneficial to increase the contact area between each outer shell and the sensing surface 111 of the kettle body 11, thereby improving the accuracy of temperature monitoring and water level monitoring.

[0046] Furthermore, the auxiliary component 25 may also be provided with a pressure sensor for monitoring whether the kettle 10 is placed on the base 20. Specifically, the pressure sensor can monitor whether the kettle 10 is removed from the base 20, and then the heating plate 28 can be further controlled to stop heating, so as to avoid the heating plate 28 from burning empty, which is conducive to extending the service life of the heating plate 28. It is worth mentioning that the auxiliary component 25 may also be provided with other sensors, and this application does not make specific restrictions.

[0047] In some embodiments, Figure 4-Figure 6 As shown, a retaining portion 26 is provided between two adjacent boss portions 22, and the retaining portion 26 protrudes upward from the top surface 21 of the base 20 and surrounds the outer periphery of the heating plate 28, that is, a receiving space 27 located above the heating plate 28 is formed between each retaining portion 26 and each boss portion 22 to accommodate the extension portion 114 of the kettle body 11. Furthermore, the height of the retaining portion 26 is lower than the height of the boss portion 22, which is conducive to reducing the volume of the base 20, thereby saving materials and reducing manufacturing costs.

[0048] Furthermore, Figure 5 As shown, the inner circumferential wall surface 261 of the enclosure portion 26 forms an angle with the horizontal plane, which is denoted as β, 90°≤β≤150°. Specifically, when β=90°, the inner circumferential wall surface 261 of the enclosure portion 26 is orthogonal to the top surface 21, which is beneficial to horizontally limit the extension portion 114 of the kettle body 11. When 90°<β≤150°, the inner circumferential wall surface 261 of the enclosure portion 26 is inclined, that is, the inner circumferential wall surface 261 gradually extends from bottom to top in a direction away from the center of the top surface 21, which is beneficial to guide the extension portion 114 of the kettle body 11 into the accommodating space 27 and align the placement surface 112 with the heating plate 28. In addition, the inner peripheral wall surface 261 of the enclosure 26 is inclined to increase the gap between the inner peripheral wall surface 261 and the kettle body 11, which is conducive to heat dissipation, so as to avoid heat accumulation in the accommodating space 27, thereby preventing the side of the base 20 facing the heating plate 28 from being in a high temperature environment for a long time, which is conducive to extending the service life of the base 20. Preferably, 130°≤β≤140°. More preferably, β=135°.

[0049] It is worth mentioning that, compared with setting the first sensing element 23 on the inner side wall 222 of the boss portion 22, setting the first sensing element 23 on the upper end surface 221 of the boss portion 22 in this embodiment is more conducive to the accuracy of temperature measurement. Specifically, when the first sensing element 23 is set on the inner side wall 222 of the boss portion 22, since the heat in the accommodating space 27 is not easy to dissipate, the temperature measured by the first sensing element 23 may be higher than the temperature of the tea in the kettle body 11, resulting in a decrease in the reliability of the temperature control function of the electric kettle. For example, the temperature measured by the first sensing element 23 on the base 20 is 100°C, and the heating plate 28 is further controlled to stop heating, while the actual temperature of the tea in the kettle body 11 has not reached 100°C, resulting in the water not being completely boiled. Furthermore, in the present embodiment, the inner wall surface 261 of the enclosure portion 26 is inclined, which is beneficial to the dissipation of heat in the accommodating space 27, thereby reducing the interference of the heat in the accommodating space 27 on the first sensing element 23, so that the temperature measured by the first sensing element 23 is closer to the water temperature in the kettle body 11.

[0050] In some embodiments, Figure 5As shown, the inner side wall 222 of the boss portion 22 is orthogonal to the top surface 21, which is conducive to limiting the extension portion 114 of the kettle body 11 in the horizontal direction. In other embodiments, the inner side wall 222 of the boss portion 22 gradually extends from bottom to top in a direction away from the center of the top surface 21, which is conducive to guiding the extension portion 114 of the kettle body 11 into the accommodating space 27. In addition, the inner side wall 222 of the boss portion 22 is inclined to increase the gap between the inner side wall 222 and the kettle body 11, which is further conducive to heat dissipation from the accommodating space 27. In addition, the inner side wall 222 of the boss portion 22 and the inner peripheral wall surface 261 of the enclosure portion 26 can be arranged in the same plane, which is conducive to reducing the manufacturing difficulty of the base 20, thereby reducing the cost of the electric kettle; in addition, the grooves and gaps on the base 20 can be reduced to facilitate cleaning, further reducing the risk of bacterial growth.

[0051] In some embodiments, Figure 4 and Figure 6 As shown, the circumferential size of the boss portion 22 gradually increases from top to bottom, that is, the boss portion 22 is a trapezoid with a small top and a large bottom, which is beneficial to increase the connection strength between the boss portion 22 and the top surface 21 and improve the structural strength of the boss portion 22.

[0052] In some embodiments, Figure 4 and Figure 6 As shown, a plurality of edge portions 223 protrude upward from the upper end surface 221 of the boss portion 22, and the edge portions 223 are located on a side of the boss portion 22 away from the center of the base 20. When the kettle 10 is placed on the base 20, the edge portions 223 surround the outer periphery of the main body 113 of the kettle body 11, which is conducive to positioning the kettle body 11 in the horizontal direction, further reducing the risk of accidental movement and tipping of the kettle 10 relative to the base 20, thereby helping to prevent the kettle 10 from falling and causing damage, thereby improving the safety of the electric kettle when in use.

[0053] Further, such as Figure 4-Figure 6 As shown, the outer peripheral surface of the edge portion 223, the outer peripheral surface of the boss portion 22 and the outer peripheral surface of the base 20 are arranged in the same plane, which is conducive to reducing the manufacturing difficulty of the base 20, thereby reducing the cost of the electric kettle; in addition, the grooves and gaps on the base 20 can be reduced to facilitate cleaning, further reducing the risk of bacterial growth.

[0054] In some embodiments, Figure 6 and Figure 7As shown, the electric kettle further includes an anti-scalding cover 30, which is suitable for being placed on the base 20 to separate the heating plate 28 from the kettle body 11, thereby slowing down the speed of heat exchange between the kettle body 11 and the heating plate 28. It is understandable that when the kettle 10 is directly placed on the heating plate 28 of the base 20, the placement surface 112 of the kettle 10 and the heating plate 28 can be heat exchanged more quickly, so that the tea can be boiled more quickly, thereby improving the efficiency of boiling water; when the kettle 10 is placed on the anti-scalding cover 30, the placement surface 112 of the kettle 10 and the heating plate 28 can be heat exchanged indirectly through the anti-scalding cover 30 and the air gap, thereby slowing down the speed of boiling the tea, thereby achieving the effect of boiling Kung Fu tea. Furthermore, since the first sensing element 23 , the second sensing element 24 and the auxiliary element 25 are able to float relative to the upper end surface 221 of the boss portion 22 , each sensing element can be in contact with the sensing control surface 111 in both cases of installing the anti-scalding cover 30 and removing the anti-scalding cover 30 .

[0055] It is worth mentioning that a scalding prevention net is placed above the heating plate 28 to prevent the user's limbs from accidentally touching the heating plate 28 and causing burns after the kettle 10 is moved away, especially to prevent children from touching the heating plate 28 accidentally or out of curiosity, thereby improving the safety of the electric kettle when in use.

[0056] In some embodiments, Figure 7 As shown, the anti-scalding cover 30 includes an anti-scalding panel 31 and a support portion 32 for supporting the anti-scalding panel 31, so that the anti-scalding panel 31 is suspended above the heating plate 28, thereby avoiding direct contact between the anti-scalding panel 31 and the heating plate 28, which is beneficial to prolonging the service life of the anti-scalding panel 31. Further, the support portion 32 is provided with a plurality of circumferentially distributed clamping portions 321, which are suitable for elastic deformation to clamp the anti-scalding cover 30 to the base 20, thereby improving the reliability of the connection between the anti-scalding cover 30 and the base 20.

[0057] Specifically, the material of the anti-scalding panel 31 can be high-temperature resistant plastic or metal; the material of the supporting part 32 can also be high-temperature resistant plastic or metal; further, the material of the anti-scalding panel 31 and the material of the supporting part 32 can be the same or different, and this application does not make any specific restrictions.

[0058] In a specific implementation, Figure 7As shown, the anti-scalding panel 31 is circular, and can cover the top of the heating plate 28 and stably support the kettle 10. The support portion 32 protrudes from the edge of the anti-scalding panel 31 toward the base 20, and is suitable for being placed on the top surface 21 between the boss portion 22 and the heating plate 28. While avoiding interference between the support portion 32 and the boss portion 22, it further avoids direct contact between the support portion 32 and the heating plate 28, thereby helping to reduce the heat exchange between the anti-scalding cover 30 and the heating plate 28, so as to achieve the function of heat insulation. The outer periphery of the support portion 32 is protrudingly provided with a plurality of clamping portions 321 uniformly distributed along the circumferential direction, and the clamping portions 321 are suitable for elastic deformation in the radial direction, and the number of the clamping portions 321 is consistent with the number of the boss portions 22 on the base 20. When the anti-scalding cover 30 is placed on the base 20, each clamping portion 321 can correspond to and conflict with each boss portion 22, so that the anti-scalding cover 30 is clamped on the base 20.

[0059] It is understandable that the base 20 in the present application is also applicable to a kettle 10 whose kettle body 11 is made of a full glass body and whose kettle cover is made of other materials. For example, some existing health-preserving kettles have a kettle body 11 made of a full glass body, a side of the kettle cover facing away from the kettle body 11 is made of plastic material, and a side of the kettle cover close to the kettle body 11 is made of stainless steel material. The base 20 in this embodiment is also applicable to a kettle 10 whose kettle body 11 is made of other heat-conducting materials, such as ceramic material and crystal material.

[0060] It is worth mentioning that the base 20 in the present application also includes a control component to control the power on and off of the heating plate 28. It can also include an operation panel so that the user can choose to keep the tea in the kettle 10 at a predetermined temperature and use it as a health-preserving kettle. Further, the base 20 also includes a power cord to provide power to the heating plate and the control component.

[0061] The above describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A base for heating a kettle, characterized in that: The base has a top surface, and a heating plate is provided in the middle area of ​​the top surface for receiving and heating the kettle; a plurality of bosses protrude upward from the top surface and surround the outer circumference of the heating plate; a first sensor is provided on the upper end surface of the boss to monitor the water temperature in the kettle.

2. The base according to claim 1, characterized in that: The upper end surface of the boss portion is also provided with a second sensing element to monitor the water level in the kettle.

3. The base according to claim 2, characterized in that: The first induction member and the second induction member both protrude from the upper end surface of the boss portion and are suitable for floating relative to the upper end surface of the boss portion so as to come into conflict with the kettle.

4. The base according to claim 2, characterized in that: The base has at least three boss portions uniformly distributed along the circumferential direction, wherein the upper end surface of one of the boss portions is provided with the first sensing component, the upper end surface of another of the boss portions is provided with the second sensing component, and the upper end surface of the remaining boss portions is protrudingly provided with an auxiliary component, and the auxiliary component is suitable for floating relative to the upper end surface of the boss portion to interfere with the kettle.

5. The base according to claim 1, characterized in that: A retaining portion is provided between two adjacent boss portions, the retaining portion protrudes upward from the top surface of the base and surrounds the outer circumference of the heating plate, and the inner circumferential wall surface of the retaining portion forms an angle with the horizontal plane, denoted as β, 90°≤β≤150°.

6. The base according to claim 1, characterized in that: A plurality of edge portions protrude upward from the upper end surface of the boss portion, and the edge portions are located at a side of the boss portion away from the center of the base.

7. The base according to any one of claims 1 to 6, characterized in that: It also includes an anti-scalding cover, which is suitable for being placed on the base to separate the heating plate and the kettle.

8. The base according to claim 7, characterized in that: The anti-scalding cover comprises an anti-scalding panel and a supporting portion for supporting the anti-scalding panel, so that the anti-scalding panel is suspended above the heating plate, and the supporting portion is provided with a plurality of circumferentially distributed clamping portions, and the clamping portions are suitable for elastic deformation to enable the anti-scalding cover to be clamped to the base.

9. An electric kettle, characterized in that: include: A base as described in any one of claims 1 to 8; A kettle comprises a kettle body for holding water, wherein the kettle body has a sensing surface. When the kettle is placed on the base, the sensing surface is opposite to the upper end surface of the boss portion of the base, and the first sensing element on the upper end surface is in contact with the sensing surface to monitor the water temperature in the kettle.

10. The electric kettle according to claim 9, characterized in that: The sensing control surface divides the kettle body into a main body portion and an extension portion which are arranged upper and lower, and the radial dimension of the main body portion is larger than the radial dimension of the extension portion; the extension portion is suitable for being accommodated in the accommodating space surrounded by the boss portion, and the main body portion is located above the boss portion, and the sensing control surface is arranged opposite to the upper end surface of the boss portion, and the sensing control surface forms an angle with the horizontal plane, which is denoted as α, 0°≤α≤45°.

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