Liquid level detection device and electric kettle

Abstract

The utility model discloses a liquid level detection device and an electric kettle, and belongs to the technical field of household appliances, the liquid level detection device is used for detecting the liquid level in a container body, the liquid level detection device comprises a probe, a sealing assembly and a locking piece, the probe is arranged in a mounting hole in the container body in a penetrating mode, the sealing assembly is arranged on the probe in a sleeving mode, and the locking piece is arranged on the sealing assembly. The sealing assembly comprises a first insulating part and a second insulating part, the first insulating part comprises a flexible part annularly arranged around the circumference of the probe, the flexible part can abut against the inner wall of the container body to generate elastic deformation, and the second insulating part abuts against the outer wall of the container body; the locking piece is arranged on the probe and locks the probe and the sealing assembly. The electric kettle comprises a shell, an inner container and the liquid level detection device, the inner container is arranged in the shell and serves as a container body, and the probe is arranged on the side wall of the inner container. Through elastic deformation of the flexible part, the flexible part and the inner wall of the container body are attached more tightly, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a liquid level detection device and an electric kettle. Background Art

[0002] The electric kettle heats the water in the kettle through an electric heater to make the water boil, which is convenient for people to drink. The working principle of the electric kettle is: the water vapor generated when the water boils deforms the bimetallic strip of the steam temperature sensing element, and this deformation pushes the power switch to cut off the power through the lever principle.

[0003] When there is no water in the electric kettle, if the power is turned on accidentally, the kettle will dry-boil, which will burn the kettle and even cause a fire. A liquid level sensor is usually provided in the existing electric kettle to monitor the lowest water level of the kettle in real time. When the water level of the kettle is too low, the kettle is powered off.

[0004] Liquid level sensors usually use probes, which are conductive and need to be insulated from the inner liner of the kettle. The existing probe is covered with a sealing ring, and a card slot is provided on the outer circumference of the sealing ring to be connected with the inner liner of the kettle, which is prone to water leakage after long-term use. Utility Model Content

[0005] The utility model aims to provide a liquid level detection device and an electric kettle, so as to solve the technical problem that water leakage is easy to occur when using a probe to detect the water level in the prior art.

[0006] As conceived above, the technical solution adopted by the utility model is:

[0007] A liquid level detection device, used for detecting the liquid level in a container body, comprising:

[0008] A probe, which is inserted through a mounting hole on the container body;

[0009] A sealing assembly is sleeved on the probe, the sealing assembly includes a first insulating member and a second insulating member, the first insulating member includes a flexible portion circumferentially arranged around the probe, the flexible portion can abut against the inner wall of the container body to generate elastic deformation, and the second insulating member abuts against the outer wall of the container body;

[0010] A locking member is disposed on the probe and locks the probe and the sealing assembly.

[0011] Preferably, the flexible portion is bent toward the inner wall of the container body to form a positioning curved surface, and the positioning curved surface can fit with the inner wall of the container body.

[0012] Preferably, the thickness of the flexible portion gradually decreases from the middle to the edge.

[0013] Preferably, the first insulating member and the second insulating member are plugged into each other; or, the first insulating member and the second insulating member are threadedly connected.

[0014] Preferably, a avoidance cavity is provided on the second insulating member, and one end of the first insulating member passes through the mounting hole and is inserted into the avoidance cavity; or, a avoidance cavity is provided on the first insulating member, and one end of the second insulating member passes through the mounting hole and is inserted into the avoidance cavity.

[0015] Preferably, a sealing ring is sandwiched between the first insulating member and the second insulating member in the avoidance cavity.

[0016] Preferably, the avoidance cavity is formed on the second insulating member, and the avoidance cavity is an annular cavity. One end of the first insulating member passes through the mounting hole and is inserted into the avoidance cavity.

[0017] Preferably, the locking member is a nut, which is threadably connected to the probe and presses against the second insulating member.

[0018] An electric kettle comprises an outer shell, an inner pot and the liquid level detection device as described above, wherein the inner pot is arranged in the outer shell and serves as the container body, and the probe is arranged on the side wall of the inner pot.

[0019] Preferably, a groove is provided on the outer wall of the inner container, and the liquid level detection device is arranged at the bottom of the groove.

[0020] Beneficial effects of the utility model:

[0021] The liquid level detection device proposed by the utility model has a probe that passes through a mounting hole on a container body, a sealing assembly that is sleeved on the probe, and the sealing assembly that includes a first insulating member and a second insulating member that are plugged into each other. The first insulating member includes a flexible portion that is circumferentially arranged around the probe, and the flexible portion can abut against the inner wall of the container body to generate elastic deformation. Through the elastic deformation, the flexible portion is more closely fitted to the inner wall of the container body, and the sealing effect is better; the flexible portion abuts against the inner wall of the container body, and the second insulating member abuts against the outer wall of the container body, so that the probe is insulated from the container body; a locking member is provided on the probe and locks the probe and the sealing assembly, which plays a positioning role and also ensures that the first insulating member, the second insulating member and the container body cooperate more stably, thereby ensuring the sealing effect.

[0022] The electric kettle provided by the utility model adopts the liquid level detection device, so the sealing effect of the probe is good, thereby preventing water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an electric kettle provided by Embodiment 1 of the utility model;

[0024] Figure 2 is a cross-sectional view of an electric kettle provided in Embodiment 1 of the utility model;

[0025] Figure 3 It is a cross-sectional view of the liquid level detection device provided in the first embodiment of the utility model in cooperation with the inner container;

[0026] Figure 4 It is a partial structural schematic diagram of an electric kettle provided in Embodiment 1 of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the liquid level detection device and the inner container provided in the first embodiment of the present utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the first insulating member provided in the first embodiment of the utility model. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the structure of the first insulating member provided in the first embodiment of the utility model. Figure 2 ;

[0030] Figure 8 This is a schematic diagram of the structure of the second insulating member provided in the first embodiment of the utility model. Figure 1 ;

[0031] Fig. 9 This is a schematic diagram of the structure of the second insulating member provided in the first embodiment of the utility model. Figure 2 ;

[0032] Fig.10 It is a cross-sectional view of the liquid level detection device provided in the second embodiment of the present utility model in cooperation with the inner container;

[0033] Fig.11 is a cross-sectional view of a first insulating member provided in Embodiment 2 of the present utility model;

[0034] Fig.12 is a cross-sectional view of a second insulating member provided in Embodiment 2 of the present utility model;

[0035] Fig.13 It is a cross-sectional view of the liquid level detection device provided in the third embodiment of the present utility model in cooperation with the inner container;

[0036] Fig.14 is a cross-sectional view of a first insulating member provided in Embodiment 3 of the present utility model;

[0037] Fig.15 It is a cross-sectional view of the second insulating member provided in the third embodiment of the present utility model.

[0038] In the figure:

[0039] 100, liquid level detection device; 110, probe; 120, sealing assembly; 121, first insulating member; 1211, flexible portion; 1212, positioning curved surface; 1213, first body; 12131, first through hole; 12132, first insertion section; 12133, first limiting section; 1214, first protrusion; 122, second insulating member; 1221, second through hole; 1222, second insertion section; 1223, second limiting section; 123, avoidance cavity; 130, locking member; 140, wiring piece;

[0040] 200, housing;

[0041] 300, liner; 301, groove. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0046] Embodiment 1

[0047] See also Figure 1 yes Fig. 9This embodiment provides a liquid level detection device 100 for detecting the liquid level in a container body. It can be used in an electric kettle, where the container body is the inner tank 300 of the electric kettle; it can also be used in other devices that require liquid level detection, such as a dishwasher, a washing machine, a water heater, etc. The liquid level detection device 100 can be set on the top, bottom or side of the container body.

[0048] This embodiment takes an electric kettle as an example, which includes an outer shell 200 , an inner tank 300 and a liquid level detection device 100 . The inner tank 300 is arranged in the outer shell 200 and serves as a container body, and the liquid level detection device 100 is arranged on the side wall of the inner tank 300 .

[0049] In this embodiment, two groups of liquid level detection devices 100 are arranged on the side wall of the inner pot 300, and the two groups of liquid level detection devices 100 are arranged at intervals in the vertical direction to detect the low water level and the high water level to prevent dry boiling or overflow. It can be that when the liquid level is lower than the low water level, the electric kettle is automatically powered off; for an electric kettle with an automatic water adding function, when the liquid level is higher than the high water level, water adding is stopped.

[0050] In other embodiments, more than two groups of liquid level detection devices 100 may be provided on the side wall of the inner tank 300, and each group of liquid level detection devices 100 may be arranged at intervals in the vertical direction to facilitate detection of more positions in the inner tank 300 and achieve more accurate detection of the water level.

[0051] A groove 301 is provided on the outer wall of the inner liner 300, and the liquid level detection device 100 is provided at the bottom of the groove 301. The groove 301 is provided to facilitate the accommodation of the liquid level detection device 100, so that a certain distance is kept between the liquid level detection device 100 and the outer shell 200, which is convenient for connecting the wires. Usually, the inner liner 300 is a stainless steel liner, and the groove 301 is formed by stamping the inner liner 300, which is convenient for processing and production, and ensures structural strength and sealing.

[0052] See also Figure 3 , Figures 5 to 9 The liquid level detection device 100 includes a probe 110, a sealing assembly 120 and a locking member 130. The probe 110 passes through a mounting hole on a container body. The sealing assembly 120 is sleeved on the probe 110 to achieve sealing between the probe 110 and the container body. The locking member 130 is disposed on the probe 110 and locks the probe 110 and the sealing assembly 120.

[0053] The sealing assembly 120 includes a first insulating member 121 and a second insulating member 122. The first insulating member 121 includes a flexible portion 1211 circumferentially arranged around the probe 110. The flexible portion 1211 can abut against the inner wall of the container body to generate elastic deformation. The second insulating member 122 abuts against the outer wall of the container body.

[0054] Through elastic deformation, the flexible portion 1211 fits more closely with the inner wall of the container body, and the sealing effect is better; the flexible portion 1211 abuts against the inner wall of the container body, and the second insulating member 122 abuts against the outer wall of the container body, so that the probe 110 is insulated from the container body; the locking member 130 plays a positioning role, and also ensures that the first insulating member 121, the second insulating member 122 and the container body cooperate more stably, thereby ensuring the sealing effect.

[0055] In this embodiment, the locking member 130 is a nut, which is threadedly connected to the probe 110 and pressed against the second insulating member 122. The threaded locking facilitates installation and disassembly. In other embodiments, the locking member 130 is a snap ring, which is inserted into the slot of the probe 110 to limit the second insulating member 122, making installation and disassembly easier.

[0056] In this embodiment, the liquid level detection device 100 includes a nut, a positioning cap is provided at one end of the probe 110, the first insulating member 121 is clamped between the positioning cap and the inner liner 300 to achieve positioning, and the second insulating member 122 is positioned under the clamping action of the nut and the inner liner 300.

[0057] In other embodiments, the liquid level detection device 100 includes two nuts, one nut is arranged on the inner side of the container body, and the first insulating member 121 is positioned by the clamping action of the nut and the inner liner 300, and the other nut is arranged on the outer side of the inner liner 300, and the second insulating member 122 is positioned by the clamping action of the nut and the inner liner 300.

[0058] The liquid level detection device 100 further includes a wiring piece 140, which is sleeved on the probe 110 and located between the locking member 130 and the second insulating member 122. The wiring piece 140 is used to connect the wire to transmit the signal of the probe 110. The working principle of the probe 110 to detect the water level is conventional technology and will not be repeated here.

[0059] In order to ensure sealing, the first insulating member 121 is an integrally formed structure. The second insulating member 122 is an integrally formed structure. In some embodiments, the first insulating member 121 is a silicone member, which takes both flexibility and insulation into consideration. In some embodiments, the second insulating member 122 is a plastic member, which plays the role of insulation and gasket, so that the locking member 130 can be locked more tightly with the probe 110 to prevent the locking member 130 from loosening.

[0060] In some embodiments, the flexible portion 1211 is in a sheet structure, which can be a flat sheet or a bent sheet. By setting the flexible portion 1211 in a sheet shape, it is easy to deform so as to fit well with the container body, and has a large contact area with the inner wall of the container body to ensure sealing. In some embodiments, the flexible portion 1211 has a set thickness along the axial direction of the first insulating member 121, and the flexible portion 1211 is elastically deformed under the extrusion of the probe 110 and the container body.

[0061] In this embodiment, the flexible portion 1211 is bent toward the inner wall of the container body to form a positioning curved surface 1212, and the positioning curved surface 1212 can fit the inner wall of the container body. By bending the flexible portion 1211, on the one hand, the surface area is increased, and then the contact area with the inner wall of the container body is increased; on the other hand, when the flexible portion 1211 fits the container body, the surface of the flexible portion 1211 is gradually stretched by the bending, so that the flexible portion 1211 undergoes elastic deformation and gradually fits the inner wall of the container body, and the fitting effect is better.

[0062] Since the flexible portion 1211 is elastic, the inner wall of the container body can be flat or curved, and both can fit well to ensure a sealing effect. The shape of the flexible portion 1211 when not subjected to external force can be set according to actual needs. In this embodiment, the flexible portion 1211 is disc-shaped.

[0063] In some embodiments, the thickness of the flexible portion 1211 is uniform, which is convenient for processing and production. In some embodiments, the thickness of the flexible portion 1211 gradually decreases from the middle to the edge, so that bubbles are not easily generated when the flexible portion 1211 is attached to the inner wall of the container body, ensuring better attachment. In some embodiments, the flexible portion 1211 includes a connecting section and a deforming section, the deforming section is arranged around the outer circumference of the connecting section, the thickness of the connecting section is uniform, and the thickness of the deforming section gradually decreases from the middle to the edge.

[0064] The first insulating member 121 further includes a first body 1213, on which a first through hole 12131 for inserting the probe 110 is formed, and the flexible portion 1211 is arranged in a ring shape around the circumference of the first body 1213. Since the probe 110 is cylindrical, the first through hole 12131 is a circular hole. The first body 1213 can be cylindrical or quadrangular, which is not limited here.

[0065] In this embodiment, the first body 1213 is in a stepped cylindrical shape and has a stepped surface, and the flexible portion 1211 is disposed at the stepped surface. Specifically, the first body 1213 includes a first insertion section 12132 and a first limiting section 12133, the diameter of the first limiting section 12133 is larger than the diameter of the first insertion section 12132, the first insertion section 12132 can pass through the mounting hole on the container body, and the first limiting section 12133 is located on the inner side of the container body for abutting against the positioning cap of the probe 110.

[0066] The second insulating member 122 is provided with a second through hole 1221 for inserting the probe 110, and the second through hole 1221 is coaxially arranged with the first through hole 12131 to ensure installation accuracy and connection stability. The inner diameter of the first through hole 12131 can be set according to the diameter of the bare rod section of the probe 110, and the inner diameter of the second through hole 1221 can be set according to the diameter of the threaded section of the probe 110 to prevent the probe 110 from shaking in the first through hole 12131 or the second through hole 1221.

[0067] In this embodiment, the first insulating member 121 and the second insulating member 122 are plugged together, and there is an overlapped area between the two, which not only ensures the sealing effect, but also ensures that the probe 110 is insulated from the container body. In other embodiments, the first insulating member 121 and the second insulating member 122 are threadedly connected to increase the contact area, further ensuring the sealing effect, and the first insulating member 121 and the second insulating member 122 are locked by the threaded connection to prevent loosening.

[0068] Specifically, the second insulating member 122 is provided with an avoidance cavity 123, and one end of the first insulating member 121 passes through the mounting hole and is inserted into the avoidance cavity 123. It is understandable that the first insulating member 121 is long enough to pass through the mounting hole, thereby preventing the probe 110 from contacting the inner wall of the mounting hole, so that the probe 110 is insulated from the inner liner 300. The second insulating member 122 abuts against the outer wall of the inner liner 300, and by providing the avoidance cavity 123, the first insulating member 121 is avoided without affecting the abutment, thereby making full use of the space. The plug-in setting allows the first insulating member 121 and the second insulating member 122 to have an overlapping area, ensuring that the probe 110 is insulated from the container body.

[0069] The end of the first insulating member 121 in the avoidance cavity 123 is spaced apart from the avoidance cavity 123 , so that the first insulating member 121 and the second insulating member 122 are plugged in along the axial direction of the probe 110 but do not abut against each other, ensuring that the second insulating member 122 can fully abut against the outer wall of the inner liner 300 .

[0070] In this embodiment, the cross-sectional shape of the avoidance cavity 123 is circular. Specifically, the first insertion section 12132 of the first insulating member 121 is inserted into the avoidance cavity 123 of the second insulating member 122, and the outer diameter of the first insertion section 12132 is smaller than the inner diameter of the avoidance cavity 123. On the second insulating member 122, the avoidance cavity 123 is connected to the second through hole 1221, and the inner diameter of the avoidance cavity 123 is larger than the inner diameter of the second through hole 1221.

[0071] In some embodiments, a sealing ring is arranged around the circumference of the first insulating member 121 in the avoidance cavity 123, and the sealing ring is sandwiched between the first insulating member 121 and the second insulating member 122. Since the sealing ring is arranged around the circumference of the first insulating member 121, it does not affect the full contact between the second insulating member 122 and the outer wall of the inner liner 300. When the first insulating member 121 and the second insulating member 122 are plugged in along the axial direction of the probe 110, the sealing ring can be squeezed, so that the sealing ring is elastically deformed, and the sealing performance is further ensured. Specifically, a card slot is provided on the outer circumferential surface of the first insertion section 12132, and the sealing ring is inserted into the card slot.

[0072] Embodiment 2

[0073] Figures 10 to 12 Embodiment 2 is shown, in which the parts identical or corresponding to Embodiment 1 are marked with the corresponding reference numerals of Embodiment 1. For the sake of simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference is that a avoidance cavity 123 is provided on the first insulating member 121, and one end of the second insulating member 122 passes through the mounting hole and is inserted into the avoidance cavity 123. It can be understood that the second insulating member 122 is long enough to pass through the mounting hole, thereby avoiding contact between the probe 110 and the inner wall of the mounting hole, so that the probe 110 is insulated from the inner liner 300. The first insulating member 121 abuts against the inner wall of the inner liner 300, and by setting the avoidance cavity 123, the second insulating member 122 is avoided without affecting the abutment, so as to make full use of the space. The plug-in setting allows the first insulating member 121 and the second insulating member 122 to have an overlapping area, ensuring that the probe 110 is insulated from the container body.

[0074] The end of the second insulating member 122 in the avoidance cavity 123 is spaced apart from the avoidance cavity 123 , so that the first insulating member 121 and the second insulating member 122 are plugged in along the axial direction of the probe 110 but do not abut against each other, ensuring that the second insulating member 122 can fully abut against the outer wall of the inner liner 300 .

[0075] Specifically, the second insulating member 122 is in a stepped cylindrical shape and has a stepped surface, and the stepped surface abuts against the outer wall of the container body. The second insulating member 122 includes a second insertion section 1222 and a second limiting section 1223, the diameter of the second limiting section 1223 is larger than the diameter of the second insertion section 1222, the second insertion section 1222 can pass through the mounting hole on the container body, and the second limiting section 1223 is located outside the container body and abuts against the outer wall of the container body.

[0076] In this embodiment, the cross-sectional shape of the avoidance cavity 123 is circular. The second insertion section 1222 of the second insulating member 122 is inserted into the avoidance cavity 123 of the first insulating member 121, and the outer diameter of the second insertion section 1222 is smaller than the inner diameter of the avoidance cavity 123. On the first insulating member 121, the avoidance cavity 123 is connected to the first through hole 12131, and the inner diameter of the avoidance cavity 123 is larger than the inner diameter of the first through hole 12131.

[0077] In some embodiments, a sealing ring is arranged around the circumference of the first insulating member 121 in the avoidance cavity 123, and the sealing ring is sandwiched between the first insulating member 121 and the second insulating member 122. Since the sealing ring is arranged around the circumference of the first insulating member 121, it does not affect the full contact between the second insulating member 122 and the outer wall of the inner liner 300. When the first insulating member 121 and the second insulating member 122 are plugged in along the axial direction of the probe 110, the sealing ring can be squeezed, so that the sealing ring is elastically deformed, and the sealing performance is further ensured. Specifically, a card slot is provided on the outer circumferential surface of the second insertion section 1222, and the sealing ring is inserted into the card slot.

[0078] Embodiment 3

[0079] Figures 13 to 15 Embodiment 3 is shown, in which the parts identical or corresponding to those in Embodiment 1 are marked with the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences between Embodiment 3 and Embodiment 1 are described. The difference is that a avoidance cavity 123 is provided on the second insulating member 122, and the avoidance cavity 123 is an annular cavity, and one end of the first insulating member 121 passes through the mounting hole and is inserted into the avoidance cavity 123. By setting the avoidance cavity 123 in an annular shape, the sealing of the overlapping area of ​​the first insulating member 121 and the second insulating member 122 is increased, so that a labyrinth sealing area is formed between the first insulating member 121 and the second insulating member 122, thereby improving the sealing effect.

[0080] It is understandable that the first insulating member 121 is long enough to pass through the mounting hole, thereby preventing the probe 110 from contacting the inner wall of the mounting hole, so that the probe 110 is insulated from the inner liner 300. The second insulating member 122 abuts against the outer wall of the inner liner 300, and the avoidance cavity 123 is provided to avoid the first insulating member 121 without affecting the abutment, thereby making full use of the space.

[0081] Specifically, the first insulating member 121 is provided with a first protrusion 1214 around the end of the first body 1213, and the first protrusion 1214 is inserted into the avoidance cavity 123. The first protrusion 1214 is provided so that a bent matching gap is formed at the insertion point of the first insulating member 121 and the second insulating member 122 to ensure sealing.

[0082] It can be understood that the above-mentioned embodiments can be selectively combined as needed on the basis of being feasible, as long as there is no contradiction in the combination of these technical features. In order to make the description concise, not all possible combinations of the various technical features in the above-mentioned embodiments are described. These embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0083] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid level detection device for detecting the liquid level in a container body, characterized in that: include: A probe (110) is inserted through a mounting hole on the container body; A sealing component (120) is sleeved on the probe (110), the sealing component (120) comprising a first insulating member (121) and a second insulating member (122), the first insulating member (121) comprising a flexible portion (1211) circumferentially arranged around the probe (110), the flexible portion (1211) being capable of abutting against an inner wall of the container body to generate elastic deformation, and the second insulating member (122) abutting against an outer wall of the container body; A locking member (130) is disposed on the probe (110) and locks the probe (110) and the sealing assembly (120).

2. The liquid level detection device according to claim 1, characterized in that: The flexible portion (1211) is bent toward the inner wall of the container body to form a positioning curved surface (1212), and the positioning curved surface (1212) can fit with the inner wall of the container body.

3. The liquid level detection device according to claim 1, characterized in that: The thickness of the flexible portion (1211) gradually decreases from the middle to the edge.

4. The liquid level detection device according to claim 1, characterized in that: The first insulating member (121) and the second insulating member (122) are plugged into each other; or, the first insulating member (121) and the second insulating member (122) are threadedly connected.

5. The liquid level detection device according to claim 4, characterized in that: The second insulating member (122) is provided with an avoidance cavity (123), and one end of the first insulating member (121) passes through the mounting hole and is inserted into the avoidance cavity (123); Alternatively, a relief cavity (123) is provided on the first insulating member (121), and one end of the second insulating member (122) passes through the mounting hole and is inserted into the relief cavity (123).

6. The liquid level detection device according to claim 5, characterized in that: A sealing ring is arranged in the avoidance cavity (123) around the circumference of the first insulating member (121), and the sealing ring is sandwiched between the first insulating member (121) and the second insulating member (122).

7. The liquid level detection device according to claim 4, characterized in that: The second insulating member (122) is provided with an avoidance cavity (123), the avoidance cavity (123) being an annular cavity, and one end of the first insulating member (121) passes through the mounting hole and is inserted into the avoidance cavity (123).

8. The liquid level detection device according to any one of claims 1 to 7, characterized in that: The locking member (130) is a nut, which is threadedly connected to the probe (110) and pressed against the second insulating member (122).

9. An electric kettle, characterized in that: It comprises an outer shell (200), an inner shell (300) and the liquid level detection device according to any one of claims 1 to 8, wherein the inner shell (300) is arranged in the outer shell (200) and serves as the container body, and the probe (110) is arranged on the side wall of the inner shell (300).

10. The electric kettle according to claim 9, characterized in that: A groove (301) is provided on the outer wall of the inner container (300), and the liquid level detection device is arranged at the bottom of the groove (301).

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