An electric kettle

Abstract

The utility model discloses an electric kettle, which belongs to household electrical appliances, and solves the problem that the PTC heater cannot fit the curved surface structure of the outer bottom surface of the inner tank. The technical solution to solve the problem mainly includes a kettle body, which includes an inner tank, and the outer bottom surface of the inner tank is provided with a first connection position and a second connection position, the position of the first connection position is higher than the position of the second connection position, and the outer bottom surface of the inner tank includes a first curved surface, and a heat preservation component is provided on the first curved surface. The heat preservation component includes a PTC heater and a pressing plate, the upper end of the pressing plate is fixed to the first connecting position, the lower end is fixed to the second connecting position and the PTC heater is pressed against the first curved surface, and the pressing plate is provided with supporting ribs to hold the PTC heater and prevent it from sliding down. The utility model is mainly used to install the PTC heater on the curved surface structure of the outer bottom surface of the inner tank to keep the liquid inside the inner tank warm.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an electric kettle. Background Art

[0002] In daily drinking, people are accustomed to drinking warm boiled water. In order to keep the liquid warm after boiling, a PTC heater is usually provided on the heating base of the electric kettle to heat and keep the liquid warm so that the liquid temperature is constant within a suitable drinking range.

[0003] For example, the patent with announcement number CN207341609U discloses a liquid heater, which belongs to the field of household appliances and solves the problems of inconvenient installation and low reliability of PTC heaters. The technical solution to this problem mainly includes a kettle body, and a thermostat, a heating tube and a PTC heater are arranged at the bottom of the kettle body. The thermostat is arranged on the inner circle side of the heating tube, and an installation area is formed between the two joints of the heating tube, and the PTC heater is arranged in the installation area. The PTC heater in the above-mentioned prior art is fixed at the installation area, which is not only convenient for installation and disassembly, simplifies the structure of the bottom of the kettle body, but also avoids leakage caused by the PTC heater being too close to other charged bodies. Since the PTC heater is a planar structure and is attached to the outer bottom surface of the heating plate, but for some inner pots, the outer bottom surface shape is a curved structure, the PTC heater cannot be flatly attached to the outer bottom surface of the inner pot, and cannot be directly installed and used. Utility Model Content

[0004] The purpose of the utility model is to provide an electric kettle, which solves the problem that the PTC heater cannot fit the curved surface structure of the outer bottom surface of the inner tank, and realizes that the PTC heater is reliably fixed on the curved surface structure of the outer bottom surface of the inner tank, so that the PTC heater fits the inner tank to keep the internal liquid warm.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electric kettle, comprising a kettle body, the kettle body comprising an inner liner, the outer bottom surface of the inner liner is provided with a first connection position and a second connection position, the position of the first connection position is higher than the position of the second connection position, the outer bottom surface of the inner liner comprises a first curved surface, a heat preservation component is provided on the first curved surface, the heat preservation component comprises a PTC heater and a pressing plate, the upper end of the pressing plate is fixed to the first connection position, the lower end is fixed to the second connection position and the PTC heater is pressed against the first curved surface, and the pressing plate is provided with supporting ribs for supporting the PTC heater to prevent it from sliding down.

[0006] After adopting the above technical scheme, the utility model has the following advantages: a PTC heater is installed on the outer bottom surface of the inner tank to insulate the liquid inside the inner tank, so that the temperature of the liquid is constant within an appropriate range; the upper end of the pressure plate is fixed at the first connection position on the outer bottom surface of the inner tank, and the lower end of the pressure plate is fixed at the second connection position, so that the PTC heater is tilted and fixed on the first curved surface. Since the position of the first connection position is higher than that of the second connection position, the gravity of the PTC heater and the tilt support of the pressure plate can be utilized, not only can the PTC heater be allowed to slide into the installation gap formed between the pressure plate and the first curved surface during the installation process, but also the PTC heater can maintain this movement trend after being installed in place, so that the PTC heater can better fit the first curved surface; and support ribs are provided on the pressure plate to hold the PTC heater and prevent it from sliding out of the installation gap, which can cooperate with the pressure plate itself to achieve reliable fixing of the PTC heater on the first curved surface.

[0007] Furthermore, the inner liner includes a bottom wall and a side wall, the bottom wall is connected to the bottom of the side wall, the bottom wall includes a transverse wall and an arcuate wall, the transverse wall is located in the central area of ​​the bottom wall, the arcuate wall surrounds the outer circumference of the transverse wall and extends upward along an outward convex arc line, the first arcuate surface is located on the outer surface of the arcuate wall, the first connection position is located on the first arcuate surface, and the second connection position is located on the outer surface of the transverse wall.

[0008] By adopting the above-mentioned technical scheme, the bottom wall is connected to the bottom of the side wall of the inner tank, and is divided into a transverse wall in the central area of ​​the bottom wall and a curved wall that is wrapped around the outer periphery of the transverse wall and extends upward along the convex arc line. The first curved surface is located on the outer surface of the curved wall. Since the PTC heater is pressed and fixed to the first curved surface by the pressure plate, the PTC heater can transfer heat energy to the curved wall through the first curved surface to keep the liquid inside the inner tank warm. The PTC heater adopts an eccentric side heating method, which can form convection of the liquid in the inner tank during the heating process, which is beneficial to reduce the adhesion of scale on the inner surface of the bottom wall; and in order to accurately fix the PTC heater on the first curved surface, the first connection position is set on the first curved surface, and the second connection position is set on the outer surface of the transverse wall, so that the pressure plate can fix and limit the position of the PTC heater at two points.

[0009] Furthermore, a temperature controller is provided on the outer surface of the transverse wall, and the temperature controller and the pressure plate are installed and fixed at a common second connection position.

[0010] By adopting the above-mentioned technical solution, the parts required for assembling the temperature controller and the pressure plate can be reduced, and the steps required for assembly can be reduced, thereby improving the assembly efficiency.

[0011] Furthermore, the pressure plate includes a pressing portion, a first connecting arm and a second connecting arm, the pressing portion is tightly pressed against the PTC heater, the supporting ribs are arranged at the lower edge of the pressing portion, the first connecting arm is connected to the upper edge of the pressing portion and extends to be fixed at the first connecting position, and the second connecting arm is connected to the lower edge of the pressing portion and extends to be fixed at the second connecting position.

[0012] By adopting the above technical solution, the pressing plate presses the PTC heater against the first arc surface through the pressing part, and uses the supporting ribs to press the lower end of the PTC heater to prevent the PTC heater from sliding down. At the same time, the first connecting arm is connected to the first connecting position, and the second connecting arm is connected to the second connecting position to achieve the fixing of the pressing plate, thereby achieving the precise positioning and fixed installation of the PTC heater. The pressing plate has a simple structure and forms an open fixation for the PTC heater, which is conducive to the rapid heat dissipation of the PTC heater after the heating is finished.

[0013] Furthermore, the leads of the PTC heater are routed from two sides of the first connecting arm respectively.

[0014] By adopting the above-mentioned technical solution, the leads of the PTC heater can be routed from both sides of the first connecting arm to avoid the first connecting arm and the first connecting position, thereby avoiding interference with the connection between the first connecting position and the first connecting arm, facilitating the installation of the entire pressure plate, and also facilitating the routing of the leads of the PTC heater and subsequent maintenance.

[0015] Further, the first connection position is provided with a first connection body, and the fastener is connected to the first connection body to fix the first connection arm; and / or, the second connection position is provided with a second connection body, and the fastener is connected to the second connection body to fix the second connection arm.

[0016] By adopting the above-mentioned technical scheme, the fastener cooperates with the first connecting body to fix the first connecting arm to the first connecting position, so that the user can cancel the connection relationship between the first connecting arm and the first connecting body by removing the fastener, which is convenient for replacing the PTC heater under the pressure plate; or, the second connecting arm is fixed at the second connecting position by the connection between the fastener and the second connecting body, and the user can also cancel the connection relationship of the second connecting arm by removing the fastener to replace the PTC heater; and the first connecting arm and the second connecting arm are respectively fixedly connected to the first connecting body and the second connecting body by fasteners, and the connection relationship between the first connecting arm, the second connecting arm and the first connecting position, the second connecting position can be cancelled by removing the fastener, which is convenient for the user to replace the pressure plate and the PTC heater.

[0017] Further, the first connection position is provided with a first connection body, and the first connection arm is plugged and fixed to the first connection body; or, the second connection position is provided with a second connection body, and the second connection arm is plugged and fixed to the second connection body.

[0018] By adopting the above-mentioned technical solution, the assembly steps required for assembling the first connecting arm are simplified through the plug-in connection method, the speed of installation and disassembly of the first connecting arm is improved, and time cost is saved; alternatively, the second connecting arm and the second connecting body are fixed by plugging, which can also achieve the same effect as the first connecting arm and the first connecting body are fixed by plugging.

[0019] Furthermore, the pressing plate is provided with limiting ribs for laterally limiting the PTC heater.

[0020] By adopting the above-mentioned technical solution, the limiting ribs can prevent the PTC heater from moving horizontally to the left or right under the pressure of the pressure plate, and the limiting ribs cooperate with the supporting ribs on the pressure plate to achieve accurate positioning of the PTC heater, so that the PTC heater can be installed stably during daily use without the risk of loosening or displacement.

[0021] Furthermore, the PTC heater has a first surface and a second surface located on two opposite sides, the first surface is a curved surface that fits the first arc surface, and the second surface is a flat surface that fits the pressure plate.

[0022] By adopting the above-mentioned technical solution, the first surface of the PTC heater is a curved surface that fits the first arc surface, which can make the PTC heater fit more closely with the bottom surface of the inner tank without any assembly gap, thereby improving the transfer efficiency of the PTC heater to the inner tank through the first surface and reducing the heat loss during the transfer process; the second surface is a plane, which allows the pressure plate to contact the PTC heater without a gap when pressing it, so that the pressure plate can better fix the PTC heater.

[0023] Furthermore, the first arc-shaped surface and the first surface are both spherical surfaces.

[0024] With the above technical solution, the first curved surface is used as the connecting surface between the outer bottom surface and the inner liner, which requires good load-bearing capacity and pressure resistance, while the spherical surface as a type of curved surface can provide better load-bearing capacity and pressure resistance; the first surface is a spherical surface, which can better fit with the first curved surface of the spherical surface. Moreover, the fitting of spherical surfaces does not require foolproofing, which can be more convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] Figure 1 is a cross-sectional view of the inner tank;

[0027] Figure 2 is a schematic diagram of the bottom of the inner tank;

[0028] Figure 3 It is a structural schematic diagram of the pressing plate;

[0029] Figure 4 It is a schematic diagram of the structure of the insulation component.

[0030] In the figure: liner 1, bottom wall 101, side wall 102, transverse wall 103, arc wall 104, inner wall 105, heat conducting plate 106, first connecting position 2, first connecting body 201, second connecting position 3, second connecting body 301, first arc surface 4, PTC heater 5, first surface 501, second surface 502, lead 503, pressing plate 6, supporting rib 601, pressing part 602, first connecting arm 603, second connecting arm 604, limiting rib 605, fastener 606, thermostat 7, heating tube 8. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0032] The terms "first", "second", etc. (if any) in the specification and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish before a certain technical feature, it does not necessarily indicate that it has "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present utility model, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0033] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0034] like Figures 1 to 4As shown, the utility model provides an electric water kettle, comprising a kettle body, the kettle body comprising an inner tank 1, the outer bottom surface of the inner tank 1 is provided with a first connection position 2 and a second connection position 3, the position of the first connection position 2 is higher than the position of the second connection position 3, the outer bottom surface of the inner tank 1 comprises a first curved surface 4, a heat preservation component is provided on the first curved surface 4, the heat preservation component comprises a PTC heater 5 and a pressing plate 6, the upper end of the pressing plate 6 is fixed to the first connection position 2, the lower end is fixed to the second connection position 3 and the PTC heater 5 is pressed against the first curved surface 4, and the pressing plate 6 is provided with a supporting rib 601 for supporting the PTC heater 5 to prevent it from sliding down.

[0035] The utility model installs a PTC heater 5 on the outer bottom surface of the inner tank 1 to insulate the liquid inside the inner tank 1 so that the temperature of the liquid is constant within an appropriate range; the upper end of the insulation component pressure plate 6 is fixed by the first connection position 2 on the outer bottom surface of the inner tank 1, and the lower end of the pressure plate 6 is fixed by the second connection position 3, so that the PTC heater 5 is tilted and fixed on the first curved surface 4. Since the position of the first connection position 2 is higher than that of the second connection position 3, the gravity of the PTC heater 5 and the tilt support of the pressure plate 6 can be utilized, not only can the PTC heater 5 slide into the installation gap formed between the pressure plate 6 and the first curved surface 4 during the installation process, but also the PTC heater 5 can maintain this movement trend after being installed in place, so that the PTC heater 5 can better fit the first curved surface 4; and a support rib 601 is provided on the pressure plate 6 to hold the PTC heater 5 and prevent it from sliding down and out of the installation gap, which can cooperate with the pressure plate 6 itself to achieve reliable fixing of the PTC heater 5 on the first curved surface 4.

[0036] The outer bottom surface of the inner tank 1 is generally provided with a heating tube 8. The insulation component is installed at the opening of the heating tube 8 and can form a heating ring with the heating tube 8. In addition to insulation, the insulation component can also work with the heating tube 8 during the heating process to improve the heating efficiency.

[0037] Specifically, the inner tank 1 is mainly composed of a bottom wall 101 and a side wall 102. The bottom wall 101 is connected to the bottom of the side wall 102. The bottom wall 101 includes a transverse wall 103 and an arcuate wall 104. The transverse wall 103 is located in the central area of ​​the bottom wall 101 and is a flat area of ​​the bottom wall 101. The outer surface of this area is mainly used to assemble the thermostat 7. The heating tube 8 is arranged around the thermostat 7 to heat the liquid inside the inner tank 1. The arcuate wall 104 surrounds the outer periphery of the transverse wall 103 and extends upward along the convex arc. The first arcuate surface 4 is located on the outer surface of the arcuate wall 104, wrapping the entire bottom curved surface portion of the inner tank 1. The first connection position 2 is located on the first arcuate surface 4, and the second connection position 3 is located on the outer surface of the transverse wall 103. The bottom wall 101 is connected to the bottom of the side wall 102 of the inner tank 1, and is divided into a transverse wall 103 in the central area of ​​the bottom wall 101 and a curved wall 104 that is wrapped around the outer periphery of the transverse wall 103 and extends upward along an outwardly convex arc. The first curved surface 4 is located on the outer surface of the curved wall 104. Since the PTC heater 5 is supported and fixed to the first curved surface 4 by the pressure plate 6, the PTC heater 5 can transfer heat energy to the curved wall 104 through the first curved surface 4 to keep the liquid inside the inner tank 1 warm. The PTC heater 5 adopts an eccentric side heating method, which can form convection in the liquid in the inner tank 1 during the heating process, which is beneficial to reduce the adhesion of scale on the inner surface of the bottom wall 101. In order to accurately fix the PTC heater 5 on the first curved surface 4, the first connection position 2 is set on the first curved surface 4, and the second connection position 3 is set on the outer surface of the transverse wall 103, so that the pressure plate 6 can limit the position of the PTC heater 5 by fixing it up and down at two points.

[0038] The bottom wall 101 may be a single-layer structure. In order to improve the heating uniformity, the bottom wall 101 may be designed as a double-layer structure, i.e., it includes an inner wall 105 integrally formed with the side wall 102 and a heat-conducting plate 106 fixed to the outer surface of the inner wall 105. The inner wall 105 is generally made of thin-walled stainless steel, and the heat-conducting plate 106 is generally made of aluminum. The inner wall 105 and the heat-conducting plate 106 together form a transverse wall 103 and an arc-shaped wall 104. The heating tube 8, the PTC heater 5 and the thermostat 7 are all fixed to the outer surface of the heat-conducting plate 106.

[0039] Specifically, Figure 3As shown, the structure of the pressing plate 6 mainly includes a pressing portion 602, a first connecting arm 603 and a second connecting arm 604. The pressing portion 602 is a wider plane for pressing the PTC heater 5 so that the PTC heater 5 is closely attached to the first curved surface 4. The two supporting ribs 601 on the pressing plate 6 are arranged at the lower edge of the pressing portion 602 and are located on the left and right sides of the second connecting arm 604. The two supporting ribs 601 are used to press against the lower end of the PTC heater 5 to prevent the PTC heater 5 from sliding down. In addition, the pressing plate 6 is also provided with two limiting ribs 605 for laterally limiting the PTC heater 5. The limiting ribs 605 are located on the left and right sides of the pressing portion 602. The limiting ribs 605 can keep the PTC heater 5 from shifting left and right under the pressure of the pressing plate 6, and the limiting ribs 605 cooperate with the supporting ribs 601 on the pressing plate 6 to accurately position the PTC heater 5, so that the PTC heater 5 can be stably installed in daily use without the risk of loosening and displacement. At the same time, the first connecting arm 603 is connected to the upper edge of the pressing portion 602 and extends to the first connecting position 2 for fixing, and the second connecting arm 604 is connected to the lower edge of the pressing portion 602 and extends to the second connecting position 3 for fixing, so as to fix the pressing plate 6, thereby achieving accurate positioning and fixed installation of the PTC heater 5. The pressing plate 6 has a simple structure and forms an open fixation for the PTC heater 5, which is conducive to the rapid heat dissipation of the PTC heater 5 after the heating is completed. It can be understood that in order to further improve the heat dissipation effect of the PTC heater 5 after the heating is completed, the structure of the pressing portion 602 can also be a grid-like structure, and the heat dissipation of the PTC heater 5 is accelerated through a plurality of grid holes.

[0040] In order to prevent the lead wire 503 of the PTC heater 5 from interfering with the connection between the first connection position 2 and the first connection arm 603, the lead wire 503 of the PTC heater 5 is routed from both sides of the first connection arm 603 to connect the control circuit. The lead wire 503 of the PTC heater 5 is routed from the left and right sides of the first connection arm 603 to avoid the first connection arm 603 and the first connection position 2, avoiding interference with the connection between the first connection position 2 and the first connection arm 603, facilitating the installation of the entire pressing plate 6, and facilitating the routing of the lead wire 503 of the PTC heater 5, and facilitating subsequent maintenance.

[0041] In this embodiment, if Figure 4As shown, there are also two fasteners 606 for fixing the pressure plate 6, the first connecting position 2 is provided with a first connecting body 201, one of the fasteners 606 is connected to the first connecting body 201 to fix the first connecting arm 603; the second connecting position 3 is provided with a second connecting body 301, the other fastener 606 is connected to the second connecting body 301 to fix the second connecting arm 604, the first connecting arm 603 and the second connecting arm 604 are respectively fixedly connected to the first connecting body 201 and the second connecting body 301 by the fasteners 606, and the connection relationship between the first connecting arm 603, the second connecting arm 604 and the first connecting position 2, the second connecting position 3 can be cancelled by removing the fasteners 606, so that the user can replace the pressure plate 6 and the PTC heater 5 conveniently. It can be understood that the second connecting arm 604 can also be integrally formed with the second connecting position 3, and the first connecting arm 603 is fixed to the first connecting position 2 by connecting it to the first connecting body 201 through a fastener 606, so that the user can cancel the connection between the first connecting arm 603 and the first connecting body 201 by removing the fastener 606, thereby facilitating the replacement of the PTC heater 5 under the pressure plate 6; of course, the first connecting arm 603 and the first connecting position 2 can also be integrally formed, and the second connecting arm 604 is fixed to the second connecting position 3 by connecting it to the second connecting body 301 through the fastener 606, and the user can also cancel the connection between the second connecting arm 604 by removing the fastener 606 to replace the PTC heater 5. Among them, the above-mentioned fastener 606 is a screw, and the first connecting body 201 and the second connecting body 301 are both screw hole columns that cooperate with the screws. The first connecting arm 603 and the second connecting arm 604 are clamped and fixed by screwing the screws, so as to fix the entire pressure plate 6; it can be understood that the fastener 606 can also be a buckle, and the first connecting body 201 and the second connecting body 301 are clamping columns or clamping grooves that cooperate therewith to fix the pressure plate 6; of course, the fixing methods of the fastener 606 and the first connecting body 201 and the second connecting body 301 are not limited to the above two cases, and other methods that can cooperate to fix the pressure plate 6 can also produce corresponding effects.

[0042] In order to achieve the control of liquid heating temperature, such as Figure 2As shown, in the flat area of ​​the bottom wall 101 of the inner tank 1, a thermostat 7 is provided on the outer surface of the transverse wall 103. The thermostat 7 detects the temperature of the liquid inside the inner tank 1 and cooperates with the control circuit to regulate the temperature of the liquid. Of course, due to the limited space of the transverse wall 103, in order to make the best use of the effective space of the transverse wall 103, in addition to the two screws and studs that fix the thermostat 7 separately, the second connector 301 on the second connecting position 3 shared by the thermostat 7 and the pressure plate 6 can also be installed and fixed, and the mounting hole of the second connecting arm 604 of the pressure plate 6 is overlapped with the mounting hole of the thermostat 7. The screws pass through the mounting holes of the second connecting arm 604 and the mounting holes of the thermostat 7 and cooperate with the second connector 301 to clamp and fix the second connecting arm 604 and the thermostat 7. This can reduce the parts required for assembling the thermostat 7 and the pressure plate 6, and at the same time reduce the steps required for assembly, thereby improving assembly efficiency.

[0043] In another embodiment, the connection between the pressure plate 6 and the bottom wall 101 is in a plug-in manner, wherein the second connecting arm 604 of the pressure plate 6 and the second connecting position 3 are integrally formed, and the first connecting position 2 is provided with a first connecting body 201, and the first connecting arm 603 is plugged and fixed to the first connecting body 201, and the plug-in connection method simplifies the assembly steps required for assembling the first connecting arm 603, improves the speed of installation and disassembly of the first connecting arm 603, and saves time cost; of course, the first connecting arm 603 of the pressure plate 6 and the first connecting position 2 can also be integrally formed, the second connecting position 3 is provided with a second connecting body 301, and the second connecting arm 604 is plugged and fixed to the second connecting body 301, which can also achieve the same effect of the first connecting arm 603 and the first connecting body 201 being fixed by plugging.

[0044] In order to allow the PTC heater 5 to fit the curved surface of the first curved surface 4, the PTC heater 5 has a first surface 501 and a second surface 502 located on opposite sides, the first surface 501 is a curved surface that fits the first curved surface 4, and the second surface 502 is a plane that is close to the pressing plate 6. The first surface 501 of the PTC heater 5 is a curved surface that fits the first curved surface 4, which can make the PTC heater 5 fit more closely with the bottom surface of the inner pot 1 without an assembly gap, thereby improving the transfer efficiency of the PTC heater 5 to the inner pot 1 through the first surface 501 and reducing the heat loss during the transfer process; since the pressing portion 602 of the pressing plate 6 is a smooth flat plate and the second surface 502 is a plane, when the pressing plate 6 presses the PTC heater 5, the pressing portion 602 and the second surface 502 are in contact without a gap, so that the pressing plate 6 can better fix the PTC heater 5.

[0045] Specifically, the first curved surface 4 and the first surface 501 are both spherical surfaces. As a connecting surface connected to the outer bottom surface of the inner liner 1, the first curved surface 4 requires good load-bearing capacity and pressure resistance, and the spherical surface, as a type of curved surface, can provide better load-bearing capacity and pressure resistance; the first surface 501 is a spherical surface, which can better fit the spherical first curved surface 4. Moreover, the fitting of spherical surfaces does not require foolproofing, which can be more convenient for installation.

[0046] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. An electric kettle, comprising a kettle body, the kettle body comprising an inner liner, characterized in that: The outer bottom surface of the inner pot is provided with a first connection position and a second connection position, the position of the first connection position is higher than the position of the second connection position, the outer bottom surface of the inner pot includes a first curved surface, the first curved surface is provided with a thermal insulation component, the thermal insulation component includes a PTC heater and a pressing plate, the upper end of the pressing plate is fixed to the first connection position, the lower end is fixed to the second connection position and the PTC heater is pressed against the first curved surface, and the pressing plate is provided with supporting ribs for supporting the PTC heater to prevent it from sliding down.

2. The electric kettle according to claim 1, characterized in that: The inner container includes a bottom wall and a side wall, the bottom wall is connected to the bottom of the side wall, the bottom wall includes a transverse wall and an arcuate wall, the transverse wall is located in the central area of ​​the bottom wall, the arcuate wall surrounds the outer circumference of the transverse wall and extends upward along an outwardly convex arc line, the first arcuate surface is located on the outer surface of the arcuate wall, the first connecting position is located on the first arcuate surface, and the second connecting position is located on the outer surface of the transverse wall.

3. The electric kettle according to claim 2, characterized in that: A temperature controller is disposed on the outer surface of the transverse wall, and the temperature controller and the pressing plate are installed and fixed at a common second connection position.

4. The electric kettle according to claim 1, characterized in that: The pressing plate includes a pressing portion, a first connecting arm and a second connecting arm. The pressing portion is tightly pressed against the PTC heater. The supporting ribs are arranged at the lower edge of the pressing portion. The first connecting arm is connected to the upper edge of the pressing portion and extends to be fixed at the first connecting position. The second connecting arm is connected to the lower edge of the pressing portion and extends to be fixed at the second connecting position.

5. The electric kettle according to claim 4, characterized in that: The leads of the PTC heater are routed from two sides of the first connecting arm respectively.

6. The electric kettle according to claim 4, characterized in that: The first connection position is provided with a first connection body, and the fastener is connected to the first connection body to fix the first connection arm; and / or, the second connection position is provided with a second connection body, and the fastener is connected to the second connection body to fix the second connection arm.

7. The electric kettle according to claim 4, characterized in that: The first connection position is provided with a first connection body, and the first connection arm is plugged and fixed to the first connection body; or the second connection position is provided with a second connection body, and the second connection arm is plugged and fixed to the second connection body.

8. The electric kettle according to claim 1, characterized in that: The pressing plate is provided with limiting ribs for laterally limiting the PTC heater.

9. The electric kettle according to claim 1, characterized in that: The PTC heater has a first surface and a second surface located on two opposite sides, the first surface is a curved surface that fits the first arc surface, and the second surface is a flat surface that fits the pressing plate.

10. The electric kettle according to claim 9, characterized in that: The first arc surface and the first surface are both spherical surfaces.

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