An improved electric heater and an electrical appliance for heating food or water.
By laying a graphene composite plate between the electric heater and the vessel, the problem of glassware being fragile due to uneven heating caused by the electric heater is solved, achieving uniform heat transfer and collision buffering, and possessing energy-saving and heat-preserving functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李高升
- Filing Date
- 2025-03-17
- Publication Date
- 2026-05-26
AI Technical Summary
The existing electric heaters cause uneven heating, resulting in large local temperature differences in glassware, making it brittle and prone to breakage when it collides with the electric heater.
A graphene composite plate is laid between the electric heater and the vessel. By utilizing the superconductivity and flexibility of graphene, heat can be transferred evenly and collisions can be buffered. The graphene composite plate also has energy storage and heat preservation functions.
It achieves uniform and rapid heat transfer, preventing glassware from breaking due to large local temperature differences, reducing collision damage, and has energy-saving and heat-preserving effects.
Smart Images
Figure CN224290085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improved electric heater and an electrical appliance for heating food or water. Background Technology
[0002] Currently, common electrical appliances used for heating food or water typically consist of an electric heater and a container. The electric heater is placed below the container to heat both the container and the food or water inside. The heater and container are separate entities. The container is often made of glass, such as a glass kettle or a non-stick glass pan. These appliances have the following drawbacks: 1) When filled with food or water, the glass container becomes very heavy, making it difficult to control when held on the heater, increasing the risk of collision and breakage. 2) Uneven heating by the heater can cause large localized temperature differences, making the glass container prone to breakage. 3) Dry heating can also cause large localized temperature differences, making the glass container susceptible to breakage. Summary of the Invention
[0003] The purpose of this invention is to provide an improved electric heater and an appliance for heating food or water, solving the technical problem in the prior art where uneven heating by electric heaters leads to large local temperature differences in glassware, making it prone to breakage.
[0004] This utility model is achieved through the following technical solution:
[0005] An improved electric heater includes an electric heater, characterized in that: a layer of graphene composite plate is laid on the surface of the electric heater.
[0006] Preferably, the electric heater includes an electric heating element and a heat-conducting substrate. The heat-conducting substrate is made of stainless steel, titanium, or magnesium. An insulating heat-conducting layer is installed on one side of the heat-conducting substrate. The electric heating element is an electric heating coating. The electric heating coating is uniformly laid on the insulating heat-conducting layer in the form of printed lines and uniformly covers the substrate area.
[0007] Preferably, the electric heater includes an electric heating plate, which includes a heating plate body and a heating tube built into the heating plate body.
[0008] An electrical appliance for heating food or water includes an electric heater and a container for holding food or water, with the electric heater placed below the container. The appliance is characterized in that a graphene composite plate is laid between the electric heater and the container. When the electric heater is powered on, it generates heat and transfers the heat evenly and quickly to the graphene composite plate. The container placed on the graphene composite plate absorbs the heat and heats the food or water inside.
[0009] Preferably, the vessel is made of glass or stainless steel.
[0010] Preferably, the vessel is made into a glass kettle or a glass non-stick pan.
[0011] Preferably, the electric heater includes an electric heating element and a heat-conducting substrate. The heat-conducting substrate is made of stainless steel, titanium, or magnesium. An insulating heat-conducting layer is installed on one side of the heat-conducting substrate. The electric heating element is an electric heating coating. The electric heating coating is uniformly laid on the insulating heat-conducting layer in the form of printed lines and uniformly covers the substrate area.
[0012] Preferably, the electric heater includes an electric heating plate, which includes a heating plate body and a heating tube built into the heating plate body.
[0013] Preferably, the graphene composite plate is directly installed on the bottom surface of the vessel.
[0014] Preferably, the graphene composite plate is directly mounted on the top surface of the electric heater.
[0015] The advantages of this utility model compared with the prior art are as follows:
[0016] Effect 1: The improved electric heater of this utility model includes an electric heater, characterized in that: a layer of graphene composite plate is laid on the surface of the electric heater. The graphene composite plate is a superconducting material with a heat transfer efficiency 10 times that of ordinary materials. Therefore, it can quickly and evenly absorb the heat generated by the electric heater and heat it evenly, avoiding the technical problem that glassware placed on it is prone to breakage due to uneven heating of the electric heater and large local temperature difference.
[0017] Effect 2: The graphene composite board is flexible and has a certain degree of elasticity, which provides a certain buffering effect and avoids direct collision between the vessel and the electric heater, thus preventing the glass vessel from breaking easily.
[0018] Effect 3: Graphene composite panels have an energy storage function. When the electric heater is turned off and no longer generates heat, the graphene composite panels still store heat, which will not dissipate quickly, thus providing a certain degree of heat preservation and being energy-saving and environmentally friendly. Attached Figure Description
[0019] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.
[0020] Figure 1 This is a cross-sectional view of the structure of the electrical appliance of this invention for heating food or water;
[0021] Figure 2 This is a structural diagram of an electrical appliance of the present invention for heating food or water;
[0022] Figure 3 This is another structural diagram of the electrical appliance of this utility model for heating food or water;
[0023] Figure 4 This is a perspective view of the electric heater according to Embodiment 2 of this utility model;
[0024] Figure 5 This is a cross-sectional view of the electric heater according to Embodiment 2 of this utility model;
[0025] Figure 6 This is a plan view of the electric heating coating of the electric heater in Embodiment 2 of this utility model, which is laid on the insulating and heat-conducting layer. Detailed Implementation
[0026] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.
[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0029] Example 1:
[0030] refer to Figure 1 , Figure 2 and Figure 3 As shown in the figure, this embodiment provides an electrical appliance for heating food or water, including an electric heater 1 and a container 2 for holding food or water. The electric heater 1 is placed below the container 2. The feature is that a graphene composite plate 3 is laid between the electric heater 1 and the container 2. The electric heater 1 is powered on and generates heat, and the heat is evenly and quickly transferred to the graphene composite plate 3. The container 2, placed on the graphene composite plate 3, absorbs the heat and heats the food or water inside.
[0031] In this invention, a graphene composite plate 3 is laid between the electric heater 1 and the vessel 2. The electric heater 1 generates heat and rapidly and evenly transfers the heat to the graphene composite plate 3. The graphene composite plate is a superconducting material with a heat transfer efficiency 10 times that of ordinary materials. Therefore, it can quickly and evenly absorb the heat generated by the electric heater and heat it uniformly, avoiding the technical problem of glass vessels placed on it easily breaking due to large local temperature differences caused by uneven heating of the electric heater. Furthermore, the graphene composite plate is flexible and has a certain degree of elasticity, providing a cushioning effect and preventing direct collision between the vessel and the electric heater, thus preventing the glass vessel from easily breaking. Thirdly, the graphene composite plate has an energy storage function. When the electric heater is turned off and no longer generating heat, the graphene composite plate still stores heat, preventing it from dissipating quickly and providing a certain degree of insulation, thus saving energy and being environmentally friendly.
[0032] Preferably, the vessel 2 is made of glass or stainless steel.
[0033] Preferably, the vessel 2 is made into a glass kettle or a glass non-stick pan.
[0034] Preferably, such as Figure 3 As shown, the graphene composite plate 3 is directly installed on the bottom surface of the vessel 2, and the structure is simple.
[0035] Preferably, such as Figure 2 As shown, the graphene composite plate 3 is directly installed on the top surface of the electric heater 1, and the structure is simple.
[0036] Example 2:
[0037] This embodiment provides the specific structure of the electric heater 1 described in Embodiment 1, as follows: Figure 4 , Figure 5 and Figure 6 As shown, the electric heater 1 includes a substrate 10, an insulating and thermally conductive layer 40, an electric heating coating 20, electrode plates 30, and a protective layer 50. The insulating and thermally conductive layer 40 covers one side of the substrate 10. The electric heating coating 20 is laid on the insulating and thermally conductive layer 40, which is located between the substrate 10 and the electric heating coating 20. Two electrode plates 30 are respectively attached to the two ends of the electric heating coating 20. The electrode plates 30 are connected to a power supply line 60. The protective layer 50 covers the electric heating coating 20 to isolate it from air. The substrate 10 is made of metal or alloy material, and a grounding lead 70 is directly electrically connected to the substrate 10. The melting point of the metal or alloy material is greater than 800 degrees Celsius. The insulating and thermally conductive layer 40 serves both insulating and thermally conductive functions. The heat generated by the electric heating coating 20 after being energized is transferred to the substrate 10 through the insulating and thermally conductive layer 40. The insulating and thermally conductive layer 40 also isolates the substrate 10 and the electric heating coating 20 to prevent leakage.
[0038] Example 3:
[0039] This embodiment provides the specific structure of the electric heater 1 described in Embodiment 1. The electric heater 1 includes an electric heating plate, a heating plate body, and a heating tube built into the heating plate body. For details, please refer to the utility model patent entitled "Dual-Tube Electric Heating Plate" with patent number 201220463371.X.
[0040] The above embodiments merely illustrate specific implementations of the utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. Improved electric heater comprising an electric heater (1), characterized in that: A layer of graphene composite plate (3) is laid on the surface of the electric heater (1); The electric heater (1) includes an electric heating element and a heat-conducting substrate (10). The heat-conducting substrate (10) is made of stainless steel, titanium or magnesium. An insulating heat-conducting layer (40) is installed on one side of the heat-conducting substrate (10). The electric heating element is made of an electric heating coating (20). The electric heating coating (20) is uniformly laid on the insulating heat-conducting layer (40) in the form of printed lines and uniformly covers the area of the substrate (10).
2. An electric appliance for heating food or water, comprising an electric heater (1) and a vessel (2) for containing food or water, the electric heater (1) being placed below the vessel (2), characterized in that: A layer of graphene composite plate (3) is laid between the electric heater (1) and the vessel (2). The electric heater (1) is powered on and heats up, and the heat is evenly and quickly transferred to the graphene composite plate (3). The vessel (2) placed on the graphene composite plate (3) absorbs the heat and heats the food or water inside. The electric heater (1) includes an electric heating element and a heat-conducting substrate (10). The heat-conducting substrate (10) is made of stainless steel, titanium or magnesium. An insulating heat-conducting layer (40) is installed on one side of the heat-conducting substrate (10). The electric heating element is made of an electric heating coating (20). The electric heating coating (20) is uniformly laid on the insulating heat-conducting layer (40) in the form of printed lines and uniformly covers the area of the substrate (10).
3. An electric appliance for heating food or water as claimed in claim 2, characterized in that: The vessel (2) is made of glass or stainless steel.
4. An electric appliance for heating food or water as claimed in claim 3, characterized in that: The vessel (2) is made into a glass kettle or a glass non-stick pan.
5. An electric appliance for heating food or water as claimed in claim 2 or 3 or 4, characterized in that: The graphene composite plate (3) is directly installed on the bottom surface of the vessel (2).
6. An electric appliance for heating food or water as claimed in claim 2 or 3 or 4, characterized in that: The graphene composite plate (3) is directly installed on the top surface of the electric heater (1).