Electric heating thermal insulation device

Abstract

The utility model relates to an electric heating heat preservation device which comprises an inner container, a heating assembly and a shell. The inner container is used for containing liquid to be heated and insulated, an opening is formed in the top of the inner container, and the heating assembly is arranged on the outer wall of the bottom of the inner container. The heating assembly is connected with a conductive assembly, and the conductive assembly extends to the outside of the electric heating heat preservation device and is used for being connected with a power source. A first vacuum cavity is formed below the bottom of the inner container, and the heating assembly is contained in the first vacuum cavity. The shell is arranged on the outer side of the inner container in a sleeving mode, gaps are reserved between the shell and the inner container and between the shell and the first vacuum cavity, and the gaps form a second vacuum cavity. The three-layer and double-vacuum structure at the lower end of the device can effectively prevent heat generated by the heating assembly from being conducted through the side wall, the risk that a user is scalded due to the fact that the shell is overheated due to long-time heating is avoided, meanwhile, a better heat preservation function is achieved, and heat loss is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of electric heating technology, specifically to an electric heating and heat preservation device. Background Technology

[0002] Compared to traditional insulation devices such as thermos flasks / bottles, electric heating insulation devices are more suitable for applications requiring liquids to be kept within a specific temperature range, such as preparing formula, warming milk, or brewing tea. Electric heating insulation devices typically consist of an inner liner, a heating plate, and an outer shell. The heating plate maintains the liquid at a specific temperature, and a vacuum is created between the inner liner and the outer shell to insulate the liquid inside the device.

[0003] For example, CN219479749U discloses a heated thermos cup, including an inner shell and an outer shell disposed outside the inner shell. A heating component is provided on the outer bottom of the inner shell, and the outer shell includes an outer bottom shell and an outer shell connected to the outer bottom shell. The heating component, the bottom of the inner shell, and the outer bottom shell are uniformly separated by gaps. This design directly provides the heating component on the outer bottom of the inner shell and retains the structure with vacuum layers at the bottom and sides, thus achieving excellent heat preservation.

[0004] The aforementioned heated thermos cups and similar structures all create a one-piece vacuum between the outer shell and the inner liner, with the heating plate's chamber and the sidewall vacuum layer sharing the same space. This structure can lead to heat generated by the heating plate being conducted to the outer shell's sidewalls after prolonged heating, posing a risk of burns. Utility Model Content

[0005] The purpose of this disclosure is to prevent users from being burned by heat conducted to the outer casing due to prolonged heating of the bottom of the electric heating insulation device.

[0006] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0007] An electric heating and heat preservation device includes an inner tank, a heating component, and a shell;

[0008] The inner liner is used to contain the liquid to be heated and kept warm. It has an opening at the top and the heating component is provided on the bottom outer wall. The heating component is connected to a conductive component, which extends to the outside of the electric heating and heat preservation device for connecting to a power source.

[0009] The inner liner has a first vacuum chamber at its bottom, and the heating component is housed in the first vacuum chamber; the outer shell is fitted over the outer side of the inner liner, and a gap is left between the outer shell, the inner liner, and the first vacuum chamber, the gap forming a second vacuum chamber.

[0010] Preferably, the heating assembly includes a heating plate.

[0011] More preferably, the bottom circumference of the inner liner is connected to a first vacuum component, the gap between the first vacuum component and the bottom of the inner liner forms the first vacuum cavity, and one end of the conductive component protrudes from the bottom of the first vacuum component.

[0012] Preferably, the conductive component includes a conductive pin, one end of which extends from the bottom of the first vacuum component.

[0013] More preferably, the bottom of the first vacuum component is provided with a through hole for the conductive pin to pass through, and a ceramic insulating component is provided inside the through hole.

[0014] Preferably, the first vacuum chamber is provided with a temperature sensing probe for detecting temperature, one end of which extends from the bottom of the first vacuum component.

[0015] More preferably, it also includes a temperature probe mounting tube, the two ends of which are respectively connected to the bottom of the heating component and the bottom of the first vacuum component, and the temperature probe is installed inside the temperature probe mounting tube.

[0016] More preferably, the first vacuum component has an annular protrusion around its bottom, and the second vacuum component is connected to the first vacuum component along the annular protrusion, with a gap between the first vacuum component and the second vacuum component;

[0017] The housing is connected to the second vacuum component, and the gap between the housing, the inner liner, the first vacuum component, and the second vacuum component forms the second vacuum cavity.

[0018] Preferably, the first vacuum component has a first vacuum hole, and the second vacuum component has a second vacuum hole.

[0019] More preferably, the electric heating and heat preservation device is provided with a base, which is used for power supply and is provided with a conductive part that communicates with the conductive component when in contact with it.

[0020] The technical solution claimed in this disclosure achieves the following beneficial effects:

[0021] The solution of this application forms two vacuum cavities at the bottom and bottom sidewall of the electric heating and heat preservation device. The first vacuum cavity at the bottom of the inner liner can effectively prevent the heat generated by the heating component from being conducted out of the cavity, while the second vacuum cavity between the shell and the inner liner and the first vacuum cavity further reduces heat conduction.

[0022] Since the heating element of the electric heating and heat preservation device is located at the bottom of the inner liner, the heat generated by the heating element is mainly concentrated in the bottom area of ​​the device. Therefore, compared with the existing ordinary double-layer structure, the lower three-layer, double vacuum structure provided by this application device effectively prevents the heat generated by the heating element from being conducted through the side wall, avoiding the risk of the shell overheating and scalding the user due to prolonged heating, while also providing better heat preservation and reducing heat loss. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the electric heating and insulation device.

[0025] Figure 2 This is a cross-sectional structural diagram of an electric heating and insulation device.

[0026] Figure 3 This is a partially enlarged view of the bottom cross-section of the electric heating and insulation device.

[0027] Figure label:

[0028] 1-Inner liner; 2-Heating component; 3-Shell; 4-Conductive component; 5-First vacuum chamber; 6-Second vacuum chamber; 7-First vacuum component; 8-Conductive pin; 9-Temperature sensor; 10-Temperature sensor mounting tube; 11-Annular protrusion; 12-Second vacuum component. Detailed Implementation

[0029] To make the objectives, technical solutions, and beneficial effects of the embodiments in this disclosure clearer, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0030] This embodiment provides an electric heating and heat preservation device, specifically an electric heating thermos or an electric heating thermos cup, etc. Figures 1 to 3 As shown, the electric heat preservation and heating device includes an inner tank 1, a heating component 2, and a shell 3.

[0031] The inner liner 1 is used to contain the liquid to be heated and kept warm. It has an opening at the top and the heating component 2 is provided on the bottom outer wall. The heating component 2 is connected to the conductive component 4, which extends to the outside of the electric heating and heat preservation device and is used to connect to a power source.

[0032] The inner liner 1 has a first vacuum chamber 5 at its bottom, and the heating component 2 is housed in the first vacuum chamber 5; the shell 3 is fitted over the outer side of the inner liner 1, and a gap is left between the shell 3, the inner liner 1, and the first vacuum chamber 5, and the gap forms a second vacuum chamber 6.

[0033] In a preferred embodiment, the heating component 2 may be a heating plate.

[0034] In an exemplary structure, the inner liner 1 is connected to a first vacuum component 7 around its bottom circumference by means of welding, for example. The gap between the first vacuum component 7 and the bottom of the inner liner forms the first vacuum cavity 5. One end of the conductive component 4 protrudes from the bottom of the first vacuum component 7. In a preferred embodiment, the conductive component 4 includes a conductive pin 8, one end of which protrudes from the bottom of the first vacuum component 7. In a more preferred embodiment, the bottom of the first vacuum component 7 has a through hole for the conductive pin to pass through, and a ceramic insulating component is disposed within the through hole.

[0035] In a preferred embodiment, the first vacuum chamber is equipped with a temperature-sensing probe 9 for detecting temperature, one end of which protrudes from the bottom of the first vacuum component 7. In an exemplary embodiment, a temperature-sensing probe mounting tube 10 is also included, with both ends of the temperature-sensing probe mounting tube 10 connected to the heating assembly 2 and the bottom of the first vacuum component 7, respectively, and the temperature-sensing probe 9 is installed inside the temperature-sensing probe mounting tube 10.

[0036] In a preferred embodiment, the first vacuum component 7 has an annular protrusion 11 around its bottom, and the second vacuum component 12 is connected to the first vacuum component 7 along the annular protrusion 11, with a gap between the first vacuum component 7 and the second vacuum component 12. The housing 3 is connected to the second vacuum component 12, and the gap between the housing 3, the inner liner 1, the first vacuum component 7, and the second vacuum component 12 forms the second vacuum cavity 6. The housing 3 is connected to the inner liner 1, the first vacuum component 7, and the second vacuum component 12 by, for example, welding.

[0037] In a preferred embodiment, the first vacuum component 7 has a first vacuum hole for evacuating a vacuum, and the second vacuum component 12 has a second vacuum hole for evacuating a vacuum. The electric heating and heat preservation device also includes a base and a cover (not shown in the figure). The base is used for power supply and has a conductive part that communicates with the conductive component 4 when in contact with it. The cover is used to close the top opening of the electric heating and heat preservation device. The base 13 also includes a microcontroller unit, a battery (which can also be connected to an external power source via a wire), and function keys for user selection. The detailed structure and functions of the base can be found in any existing charging dock and will not be described further here.

[0038] Since the heating element of the electric heating and heat preservation device is located at the bottom of the inner liner 1, the heat generated by the heating element 2 is mainly concentrated in the bottom area of ​​the device. The solution of this application forms two vacuum cavities at the bottom and bottom side wall of the electric heating and heat preservation device. The first vacuum cavity 5 at the bottom of the inner liner can effectively prevent the heat generated by the heating element from being conducted out of the cavity, while the second vacuum cavity 6 between the shell 3 and the inner liner 1 and the first vacuum cavity 5 further reduces heat conduction.

[0039] Therefore, compared with the existing ordinary double-layer heat insulation structure, the bottom three-layer, double vacuum structure provided by the device in this application effectively prevents the heat generated by the heating component from being conducted through the side wall, avoiding the risk of the shell overheating and burning the user due to prolonged heating, while also providing better heat preservation and reducing heat loss.

[0040] The embodiments and application examples described above are merely illustrative descriptions of this disclosure and are not intended to limit the scope of this disclosure. Any modifications and improvements made by those skilled in the art to the technical solutions of this disclosure without departing from the spirit of this disclosure should fall within the protection scope defined by this disclosure.

Claims

1. An electric heating and heat preservation device, characterized in that, Includes the inner liner, heating element, and outer shell; The inner liner is used to contain the liquid to be heated and kept warm. It has an opening at the top and the heating component is provided on the bottom outer wall. The heating component is connected to a conductive component, which extends to the outside of the electric heating and heat preservation device for connecting to a power source. The inner liner has a first vacuum chamber at its bottom, and the heating component is housed in the first vacuum chamber; the outer shell is fitted over the outer side of the inner liner, and a gap is left between the outer shell, the inner liner, and the first vacuum chamber, the gap forming a second vacuum chamber.

2. The electric heating and heat preservation device according to claim 1, characterized in that, The heating component includes a heating plate.

3. The electric heating and heat preservation device according to claim 1, characterized in that, The bottom circumference of the inner liner is connected to a first vacuum component, and the gap between the first vacuum component and the bottom of the inner liner forms the first vacuum cavity. One end of the conductive component extends out from the bottom of the first vacuum component.

4. The electric heating and heat preservation device according to claim 3, characterized in that, The conductive component includes a conductive pin, one end of which extends from the bottom of the first vacuum component.

5. The electric heating and heat preservation device according to claim 4, characterized in that, The bottom of the first vacuum component is provided with a through hole for the conductive pin to pass through, and a ceramic insulating component is provided inside the through hole.

6. The electric heating and heat preservation device according to claim 3, characterized in that, The first vacuum chamber is equipped with a temperature sensing probe for detecting temperature, one end of which extends from the bottom of the first vacuum component.

7. The electric heating and heat preservation device according to claim 6, characterized in that, It also includes a temperature probe mounting tube, with its two ends connected to the bottom of the heating component and the first vacuum component, respectively, and the temperature probe is installed inside the temperature probe mounting tube.

8. The electric heating and heat preservation device according to claim 3, characterized in that, The first vacuum component has an annular protrusion around its bottom, and the second vacuum component is connected to the first vacuum component along the annular protrusion, with a gap between the first vacuum component and the second vacuum component; The housing is connected to the second vacuum component, and the gap between the housing, the inner liner, the first vacuum component, and the second vacuum component forms the second vacuum cavity.

9. The electric heating and heat preservation device according to claim 8, characterized in that, The first vacuum component is provided with a first vacuum hole, and the second vacuum component is provided with a second vacuum hole.

10. The electric heating and heat preservation device according to any one of claims 1 to 9, characterized in that, The electric heating and heat preservation device is provided with a base, which is used for power supply and has a conductive part that is connected to the conductive component when in contact with it.

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