Electric heating thermal insulation kettle

Abstract

The invention discloses an electric heating thermos flask, which comprises an external plug, a conductive terminal arranged in a slot and matched with the external plug, an electric heating body connected with the conductive terminal and extending into a second shell, and a temperature sensor connected with a controller, and is characterized in that the external plug is inserted into the slot and presses a pressing rod, so that the pressing rod pushes a middle bolt to move downwards; when liquid in the second shell is heated by the electric heating body, hot air flows to the spout along the runner plate, a temperature sensor is installed on the portion, close to the spout, of the runner plate, the temperature sensor senses that the temperature value changes suddenly in a certain time period, and it shows that water is boiled. According to the electric heating heat preservation kettle, the problems that a traditional split appliance is large in occupied space and tedious in operation step are solved through the heating and heat preservation integrated design.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to an electric heating and heat preservation kettle. Background Art

[0002] The traditional hot water preparation method relies on the separate operation of the electric kettle and the vacuum flask: the user must first heat cold water in the electric kettle to boiling, and then pour the boiling water into the vacuum flask for storage. This method has multiple inherent drawbacks. In terms of space occupation, the two independent appliances together occupy more than 0.1m2 of countertop area. 2 , resulting in a waste of limited space resources; in terms of operational process, it requires four steps: filling, heating, pouring, and storing, involving two water fillings and three container handlings, which is time-consuming and labor-intensive; in terms of energy efficiency, the increased contact surface between the water and the air during the pouring process causes steam to escape, with a measured heat loss rate of 12-15%; in terms of safety risks, pouring high-temperature liquids can easily cause the container to slip. According to statistics, 23% of household scalding accidents are caused by this operation, which is particularly threatening to the elderly and children. The root cause is that the physical separation of heating and storage functions forces users to passively bear energy losses and safety risks. The market urgently needs to systematically resolve these contradictions through integrated design. Summary of the Invention

[0003] In response to the above technical problems, the present invention proposes an electric heating thermos kettle, which solves the problems of traditional separate appliances taking up a large space and having complicated operation steps through an integrated design of heating and insulation.

[0004] The technical solution adopted by the present invention is as follows: An electric heating and insulation kettle, characterized in that it includes a first shell, a second shell, a conduction component, a heating component and a controller, the first shell is provided with a slot and a spout; the conduction component includes a pressure rod, a middle plug and a flow channel plate, the flow channel plate is provided with a channel for liquid and air flow, one end of the flow channel plate is connected to the spout, and the other end of the flow channel plate has an opening connected to the interior of the second shell, the pressure rod is rotatably connected to the first shell, and the other end of the pressure rod is movably abutted against an external plug, the first shell is provided with a slide plate that slidably cooperates with the middle plug, one end of the middle plug abuts against the pressure rod, and the other end of the middle plug movably abuts against an end surface of the opening to open and close the channel; the heating component includes an external plug, a conductive terminal provided in the slot and cooperating with the external plug, an electric heating element connected to the conductive terminal and extending into the interior of the second shell, and a temperature sensor connected to the controller; the detection head of the temperature sensor is provided at one end of the flow channel plate near the spout and extends into the interior of the channel; the controller controls the power on and off based on a temperature mutation signal detected by the temperature sensor.

[0005] Optionally, the slide plate is provided with a slide groove that slides with the middle bolt, the outer peripheral wall of the slide plate is provided with a spring, the middle bolt includes a cover plate and a bolt body fixedly connected to the cover plate, the outer peripheral wall of the slide plate is provided with a convex plate, one end of the spring abuts against the bottom surface of the cover plate, and the other end of the spring abuts against the top surface of the convex plate, the top of the bolt body protrudes from the cover plate and abuts against the pressure rod, the bottom of the bolt body is provided with a sealing plate that movably abuts against the open end surface, or the top surface of the cover plate abuts against the pressure rod.

[0006] Optionally, the pressure rod includes a first connecting section, a second connecting section and a third connecting section connected in sequence, the first connecting section is rotatably connected to the first shell, the bottom surface of the second connecting section abuts against the top of the bolt body protruding from the cover plate, and the third connecting section is provided with a protrusion that movably abuts against the external plug.

[0007] Optionally, the first shell is provided with a through hole for the protrusion to pass through.

[0008] Optionally, the second connecting section includes a first curved plate and a second curved plate, one end of the first curved plate is connected to the first connecting section, one end of the second curved plate is connected to the third connecting section, and the other end of the first curved plate and the other end of the second curved plate both extend downward and are connected.

[0009] Optionally, a groove cooperating with the bolt body is provided at the bottom of the second connecting section, and the bottom wall of the groove abuts against the top surface of the cover plate.

[0010] Optionally, the electric heating body includes a first insulating substrate, a second insulating substrate, a neutral wire electrode plate, a live wire electrode plate, a neutral wire connecting column, a live wire connecting column, a resistance wire and a protective shell, the neutral wire electrode plate and the live wire electrode plate are clamped and fixed between the first insulating substrate and the second insulating substrate; the neutral wire connecting column is fixedly connected to the neutral wire electrode plate and extends outward through the first insulating substrate, the live wire connecting column is fixedly connected to the live wire electrode plate and extends outward through the first insulating substrate, the neutral wire connecting column and the live wire connecting column are respectively connected to the conductive terminals; the resistance wire is wound around the outer surfaces of the first insulating substrate and the second insulating substrate, and the two ends of the resistance wire are electrically connected to the neutral wire connecting column and the live wire connecting column, respectively; the protective shell is provided with a cavity for accommodating the first insulating substrate, the second insulating substrate, the neutral wire electrode plate, the live wire electrode plate, the neutral wire connecting column, the live wire connecting column and the resistance wire.

[0011] Optionally, the cavity is filled with insulating heat-conductive filler.

[0012] Optionally, an anti-dry-burn circuit breaker is also included, and the conductive terminals include a live wire conductive terminal, a neutral wire conductive terminal and a ground conductive terminal, the ground conductive terminal is connected to the ground terminal of the protective shell, the neutral wire conductive terminal is connected to the neutral wire connecting post, the input end of the anti-dry-burn circuit breaker is connected to the live wire conductive terminal, and the output end of the anti-dry-burn circuit breaker is connected to the live wire connecting post.

[0013] Optionally, a connecting component is further included, which is fixedly connected to the protective shell and the first shell respectively, and a water outlet connecting the spout and the second shell is provided on the side of the connecting component, and a wire path for the neutral wire conductive terminal, the live wire conductive terminal and the grounding conductive terminal to pass through is provided inside the connecting component.

[0014] The beneficial effects of the present invention are: (1) when in use, the external plug is inserted into the slot, and the external plug presses the pressure rod, so that the pressure rod pushes the middle bolt to move downward, the middle bolt is separated from the open end face, and the spout is connected to the inside of the second shell. When the electric heating element heats the liquid in the second shell, the hot air flows along the flow channel plate to the spout. A temperature sensor is installed on the part of the flow channel plate near the spout. The temperature sensor senses a sudden change in the temperature value within a certain period of time, indicating that the water has been boiled, and the controller automatically disconnects the power supply. The electric heating and insulation kettle in this embodiment solves the problem that traditional split appliances occupy a large space and have cumbersome operating steps through an integrated design of heating and insulation.

[0015] (2) In the initial state, the sealing plate and the opening end face are against each other. When the pressure rod moves downward, the pressure rod pushes the plug body to move downward, and the plug body drives the cover plate to move. The spring is compressed, and the plug body moves downward in the slide groove. The sealing plate is separated from the opening end face, so that the spout is connected with the inside of the second shell. When the temperature sensor senses that the water has boiled, the controller disconnects the power supply and emits a buzzer. The user unplugs the external plug, and the pressure received by the pressure rod disappears. The cover plate is reset under the drive of the spring's reset force, thereby driving the plug body and the pressure rod to reset, ensuring that the middle plug automatically seals the flow channel after the plug is pulled out to prevent liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of an electrically heated thermos pot according to an embodiment of the present invention;

[0017] Figure 2 A cross-sectional view of a conductive assembly of an electrically heated thermos pot according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic structural diagram of a pressure rod of an electrically heated thermos pot according to an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of a heating assembly of an electrically heated thermos pot according to an embodiment of the present invention;

[0020] Figure 5 This is an exploded view of the first shell and the second shell of the electric heating and thermos kettle proposed in an embodiment of the present invention.

[0021] The symbols in the drawings are: 1. first shell; 101. slot; 102. spout; 2. second shell; 3. flow channel plate; 301. channel; 302. opening; 4. pressure rod; 401. first connecting section; 4011. rotating shaft; 402. second connecting section; 4021. first curved plate; 4022. second curved plate; 4023. groove; 4024. reinforcing plate; 403. third connecting section; 4031. protrusion; 5. middle plug; 501. cover plate; 502. plug body; 503. spring; 504. sealing plate; 6. , slide plate; 601, slide groove; 602, convex plate; 7, electric heating element; 701, first insulating substrate; 702, second insulating substrate; 703, neutral electrode plate; 704, live electrode plate; 705, neutral connecting column, 706, live connecting column; 707, resistance wire; 708, protective shell; 8, conductive terminal; 801, neutral conductive terminal; 802, live conductive terminal; 9, connecting component; 901, water outlet; 10, temperature sensor; 11, controller; 12, anti-dry-burn circuit breaker; 13, external plug. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below with reference to the accompanying drawings and examples.

[0023] like Figures 1 to 5As shown, it includes a first shell 1, a second shell 2, a conduction component, a heating component and a controller 11. The first shell 1 is provided with a slot 101 and a spout 102; the conduction component includes a pressure rod 4, a middle bolt 5 and a flow channel plate 3, the flow channel plate 3 is provided with a channel 301 for liquid and air flow, one end of the flow channel plate 3 is connected to the spout 102, and the other end of the flow channel plate 3 has an opening 302 connected to the interior of the second shell 2, the pressure rod 4 is rotatably connected to the first shell 1, and the other end of the pressure rod 4 is movably abutted against the external plug 13, and the first shell 1 is provided with a slide plate 6 that slides with the middle bolt 5 , one end of the middle plug 5 is in contact with the pressure rod 4, and the other end of the middle plug 5 is in contact with the end surface of the opening 302 to open and close the channel 301; the heating component includes an external plug 13, a conductive terminal 8 provided in the slot 101 and cooperating with the external plug 13, an electric heating element 7 connected to the conductive terminal 8 and extending to the inside of the second shell 2, and a temperature sensor 10 connected to the controller 11; the detection head of the temperature sensor 10 is provided at one end of the flow channel plate 3 close to the spout 102 and extends to the inside of the channel 301; the controller 11 controls the power on and off based on the temperature mutation signal detected by the temperature sensor 10. The temperature sensor can be an electronic sensor or a mechanical temperature switch. The controller can be an electronic controller or a mechanical on-off power control mechanism. The electric heating element can adopt a flat structure, or a tubular structure such as a circular or U-shaped structure.

[0024] During use, the external plug 13 is inserted into the slot 101. The external plug 13 presses the pressure rod 4, causing the pressure rod 4 to push the middle bolt 5 downward, disengaging the middle bolt 5 from the end face of the opening 302. The spout 102 is connected to the interior of the second shell 2. When the electric heating element 7 heats the liquid in the second shell 2, hot air flows along the flow channel plate 3 to the spout 102. A temperature sensor 10 is installed on the part of the flow channel plate 3 near the spout 102. The temperature sensor 10 senses a sudden change in the temperature value within a certain period of time, indicating that the water has been boiled, and the controller 11 automatically disconnects the power supply. The electric heating and insulation kettle in this embodiment solves the problem of traditional split appliances taking up a lot of space and having cumbersome operation steps through the integrated design of heating and insulation. The second shell 2 is set with a vacuum insulation structure.

[0025] like Figure 1 and 2As shown, the slide plate 6 is provided with a slide groove 601 that slides with the middle bolt 5, and the outer peripheral wall of the slide plate 6 is provided with a spring 503. The middle bolt 5 includes a cover plate 501 and a bolt body 502 fixedly connected to the cover plate 501. The outer peripheral wall of the slide plate 6 is provided with a convex plate 602. One end of the spring 503 abuts against the bottom surface of the cover plate 501, and the other end of the spring 503 abuts against the top surface of the convex plate 602. The top of the bolt body 502 protrudes from the cover plate 501 and abuts against the pressure rod 4. The bottom of the bolt body 502 is provided with a sealing plate 504 that movably abuts against the end surface of the opening 302, or the top surface of the cover plate 501 abuts against the pressure rod 4.

[0026] In the initial state, the sealing plate 504 and the end surface of the opening 302 abut against each other. When the pressure rod 4 moves downward, the pressure rod 4 pushes the bolt body 502 downward, and the bolt body 502 drives the cover plate 501 to move. The spring 503 is compressed, and the bolt body 502 moves downward in the slide 601. The sealing plate 504 separates from the end surface of the opening 302, allowing the spout 102 to communicate with the interior of the second shell 2. When the temperature sensor 10 senses that the water has boiled, the controller 11 disconnects the power supply and emits a buzzer. The user unplugs the external plug 13, the pressure on the pressure rod 4 disappears, and the cover plate 501 resets under the reset force of the spring 503, thereby driving the bolt body 502 and the pressure rod 4 to reset. This ensures that the middle bolt 5 automatically seals the flow channel after the plug is unplugged to prevent liquid leakage. The diameter of the sealing plate 504 is larger than the diameter of the end surface of the opening 302.

[0027] like Figure 3 As shown, the pressure rod 4 includes a first connecting section 401, a second connecting section 402 and a third connecting section 403 connected in sequence, the first connecting section 401 is rotatably connected to the first shell 1, the bottom surface of the second connecting section 402 abuts against the top of the bolt body 502 protruding from the cover plate 501, and the third connecting section 403 is provided with a protrusion 4031 that movably abuts against the external plug 13. The three-section pressure rod 4 structure realizes a lever-type labor-saving transmission and reduces the insertion resistance of the external plug 13. The first shell 1 is provided with a through hole for the protrusion 4031 to pass through. The second connecting section 402 includes a first curved plate and a second curved plate, one end of the first curved plate is connected to the first connecting section 401, one end of the second curved plate is connected to the third connecting section 403, and the other end of the first curved plate and the other end of the second curved plate both extend downward and are connected

[0028] The first and second curved plates form a Y-shaped structure, which enhances the bending strength of the compression rod 4 and extends its service life. The compression rod 4 can be integrally injection-molded. Reinforcement plates 4024 can be provided on either side of the first and second curved plates, respectively, connecting the first connecting section 401 and the second connecting section 402. The first connecting plate can be rotatably mounted within the through-hole of the first housing 1 via a rotating shaft 4011.

[0029] like Figure 2As shown, the bottom of the second connecting section 402 is provided with a groove 4023 that cooperates with the bolt body 502, and the bottom wall of the groove 4023 abuts against the top surface of the cover plate 501. The groove 4023 cooperates with the bolt body 502 to prevent sealing failure caused by movement deviation.

[0030] like Figure 4 As shown, the electric heating body 7 includes a first insulating substrate, a second insulating substrate, a neutral electrode plate 703, a live electrode plate 704, a neutral connecting column 705, a live connecting column 706, a resistance wire 707 and a protective shell 708. The neutral electrode plate 703 and the live electrode plate 704 are clamped and fixed between the first insulating substrate and the second insulating substrate; the neutral connecting column 705 is fixedly connected to the neutral electrode plate 703 and extends outward through the first insulating substrate; the live connecting column 706 is fixedly connected to the live electrode plate 704 and extends outward through the first insulating substrate; the neutral connecting column 705 and the live connecting column 706 are respectively connected to the conductive terminal 8. The resistance wire 707 is wound around the outer surfaces of the first insulating substrate 701 and the second insulating substrate 702, and its ends are electrically connected to the neutral connection post 705 and the live connection post 706, respectively. The protective housing 708 has a cavity for accommodating the first insulating substrate, the second insulating substrate, the neutral electrode plate 703, the live electrode plate 704, the neutral connection post 705, the live connection post 706, and the resistance wire 707. The protective housing 708 is made of stainless steel, while the first insulating substrate 701 and the second insulating substrate 702 can be made of ceramic.

[0031] In this embodiment, the cavity is filled with an insulating thermally conductive filler for electrical insulation and thermal conductivity, which may be magnesium oxide, aluminum oxide, boron nitride, or a combination thereof. The magnesium oxide powder needs to be oven-dried to remove moisture after filling.

[0032] like Figure 4As shown, the device further includes an anti-dry-burn circuit breaker 12. The conductive terminals 8 include a live wire conductive terminal 8028, a neutral wire conductive terminal 8018, and a ground conductive terminal 8. The ground conductive terminal 8 is connected to the ground terminal of the protective housing 708, and the neutral wire conductive terminal 8018 is connected to the neutral wire connecting post 705. The input of the anti-dry-burn circuit breaker 12 is connected to the live wire conductive terminal 8028, and the output of the anti-dry-burn circuit breaker 12 is connected to the live wire connecting post 706. The controller 11 sends instructions to the anti-dry-burn circuit breaker 12 based on the detection value of the temperature sensor 10. The anti-dry-burn circuit breaker 12 is connected in series between the live wire conductive terminal 8028 and the live wire connecting post 706. The live wire conductive terminal 8028 is used to connect to the live wire of an external power source, the neutral wire conductive terminal 8018 is used to connect to the neutral wire of an external power source, and the ground conductive terminal 8 is used to connect to an external ground wire. The dry-burn prevention circuit breaker can be a low-melting-point alloy fuse with a melting temperature of 140°C ± 5°C. It is connected in series in the conductive path between the live wire terminal and the live wire connection post. When the temperature of the protective shell 708 reaches 140°C ± 5°C or higher, it automatically melts, physically cutting off the live wire current. The dry-burn prevention circuit breaker operates independently of the controller to prevent the electric heating element from uncontrollably heating the liquid in the second shell if the controller malfunctions, causing the liquid to boil and evaporate, resulting in a dry-burn.

[0033] like Figure 4 As shown, it also includes a connecting member 9, which is fixedly connected to the protective shell 708 and the first shell 1 respectively. The side of the connecting member 9 is provided with a water outlet 901 connecting the spout 102 and the second shell 2. The interior of the connecting member 9 is provided with a wire path for the neutral conductive terminal 8018, the live conductive terminal 8028 and the ground conductive terminal 8 to pass through. The wire path is three independent isolation channels 301 to avoid short circuits caused by contact between the neutral conductive terminal 8018, the live conductive terminal 8028 and the ground conductive terminal 8. The connecting member 9 can be fixedly installed on the upper part of the protective shell 708 through a snap-on lug, and be connected to the bottom surface of the first shell 1 through an annular groove. An O-ring can be provided in the annular groove to achieve liquid sealing with the first shell 1. The ground conductive terminal 8 passes through the wire path of the connecting member 9 and is connected to the ground terminal of the protective shell 708. The first shell 1 and the second shell 2 can be detachably connected by threads.

[0034] It is understood that the specific embodiments described above are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts. Any equivalent structural transformation made using the contents of the present invention specification and drawings, directly or indirectly applied to other related technical fields, are also included in the protection scope of the present invention.

Claims

1. An electric heating thermos pot, characterized in that: It includes a first shell, a second shell, a conducting component, a heating component and a controller, The first shell is provided with a slot and a spout; The conduction assembly includes a pressure rod, a middle bolt and a flow channel plate, wherein the flow channel plate is provided with a channel for liquid and air to flow, one end of the flow channel plate is connected to the spout, and the other end of the flow channel plate has an opening connected to the interior of the second shell, the pressure rod is rotatably connected to the first shell, and the other end of the pressure rod is movably abutted against the external plug, and the first shell is provided with a slide plate that is slidably matched with the middle bolt, one end of the middle bolt is abutted against the pressure rod, and the other end of the middle bolt is movably abutted against the end surface of the opening to open and close the channel; The heating assembly includes an external plug, a conductive terminal disposed in the slot and mated with the external plug, an electric heating element connected to the conductive terminal and extending into the interior of the second housing, and a temperature sensor connected to the controller; The detection head of the temperature sensor is arranged at one end of the flow channel plate close to the spout and extends into the interior of the channel; The controller controls the power supply on and off based on a temperature mutation signal detected by a temperature sensor.

2. The electric heating kettle according to claim 1, characterized in that: The slide plate is provided with a slide groove that slides with the middle bolt, and the outer peripheral wall of the slide plate is sleeved with a spring. The middle bolt includes a cover plate and a bolt body fixedly connected to the cover plate. The outer peripheral wall of the slide plate is provided with a convex plate, one end of the spring abuts against the bottom surface of the cover plate, and the other end of the spring abuts against the top surface of the convex plate. The top of the bolt body protrudes from the cover plate and abuts against the pressure rod. The bottom of the bolt body is provided with a sealing plate that movably abuts against the open end surface, or the top surface of the cover plate abuts against the pressure rod.

3. The electric heating kettle according to claim 2, characterized in that: The pressure rod includes a first connecting section, a second connecting section and a third connecting section connected in sequence. The first connecting section is rotatably connected to the first shell, the bottom surface of the second connecting section abuts against the top of the bolt body protruding from the cover plate, and the third connecting section is provided with a protrusion that movably abuts against the external plug.

4. The electric heating kettle according to claim 3, characterized in that: The first shell is provided with a through hole for the protrusion to pass through.

5. The electric heating and heat preservation kettle according to claim 3, characterized in that: The second connecting section includes a first curved plate and a second curved plate, one end of the first curved plate is connected to the first connecting section, one end of the second curved plate is connected to the third connecting section, and the other end of the first curved plate and the other end of the second curved plate both extend downward and are connected.

6. The electric heating and heat preservation kettle according to claim 3, characterized in that: A groove cooperating with the bolt body is provided at the bottom of the second connecting section, and the bottom wall of the groove abuts against the top surface of the cover plate.

7. The electric heating kettle according to claim 1, characterized in that: The electric heating element includes a first insulating substrate, a second insulating substrate, a neutral electrode plate, a live electrode plate, a neutral connecting post, a live connecting post, a resistance wire and a protective shell. The neutral electrode plate and the live electrode plate are clamped and fixed between the first insulating substrate and the second insulating substrate; The neutral wire connecting post is fixedly connected to the neutral wire electrode plate and extends outward through the first insulating substrate. The live wire connecting post is fixedly connected to the live wire electrode plate and extends outward through the first insulating substrate. The neutral wire connecting post and the live wire connecting post are respectively connected to the conductive terminals. The resistance wire is wound around the outer surfaces of the first insulating substrate and the second insulating substrate, and two ends of the resistance wire are electrically connected to the neutral wire connecting post and the live wire connecting post respectively; The protective shell is provided with a cavity for accommodating the first insulating substrate, the second insulating substrate, the neutral electrode plate, the live electrode plate, the neutral connecting post, the live connecting post, and the resistance wire.

8. The electric heating and heat preservation kettle according to claim 7, characterized in that: The cavity is filled with insulating heat-conducting filler.

9. The electric heating and heat preservation kettle according to claim 7, characterized in that: It also includes an anti-dry-burn circuit breaker, the conductive terminals include a live wire conductive terminal, a neutral wire conductive terminal and a ground conductive terminal, the ground conductive terminal is connected to the ground terminal of the protective shell, the neutral wire conductive terminal is connected to the neutral wire connecting post, the input end of the anti-dry-burn circuit breaker is connected to the live wire conductive terminal, and the output end of the anti-dry-burn circuit breaker is connected to the live wire connecting post.

10. The electric heating and heat preservation kettle according to claim 9, characterized in that: It also includes a connecting component, which is fixedly connected to the protective shell and the first shell respectively. A water outlet connecting the spout and the second shell is provided on the side of the connecting component. A wire path for the neutral wire conductive terminal, the live wire conductive terminal and the grounding conductive terminal to pass through is provided inside the connecting component.

Images