Heating structure capable of being heated stably and electric kettle applying same

Abstract

The utility model discloses a heating structure with stable heating and an electric kettle using the same, and relates to the technical field of heating elements, the heating structure comprises a heating structure body in a planar heating mode, the heating structure body comprises an aluminum alloy heat conductor and a thick film heating element made of stainless steel, the aluminum alloy heat conductor is located at the upper end of the thick film heating element, and the thick film heating element is located at the lower end of the thick film heating element. The heating element is tightly connected with the thick film heating element; the end, matched with the thick film heating body, of the aluminum alloy heat conductor is a plane. Through the rapid heat conduction and uniform heat dissipation effects of the aluminum alloy heat conductor and the tight combination of the aluminum alloy heat conductor and the thick film heating body, local accumulation of heat is effectively avoided, the temperature distribution of the heating structure in the working process is more uniform, the thermal stress and deformation risks caused by uneven temperature are reduced, and therefore the overall heating stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating body, concretely is a kind of heating structure of stable heating and the electric kettle of applying it. BACKGROUND

[0002] In the field of heating technology, with the continuous development of various heating equipment and the increasing diversification of application scenarios, the performance requirements for heating structure are also increasingly high. Traditional heating structure has certain limitations in many aspects, and it is difficult to meet the demand for stable heating in modern industry and life.

[0003] In the past common heating structure, some heating bodies of single material, such as pure resistance wire heating element, although can realize basic heating function, but its heat dissipation uniformity is poor, easy to cause local overheating, thereby affecting the overall stability and service life of heating structure. In the process of long time use, this local overheating phenomenon may cause safety hazard, such as damaging surrounding parts or even causing fire, etc.

[0004] In addition, the selection and combination of some heating structures are not reasonable. For example, the base material used by part of the heating body has poor heat conduction performance, which leads to delayed heat transfer, low heating efficiency, and also affects the stable heating due to heat accumulation. In terms of combination with heat dissipation components, there are often problems of loose connection or unreasonable cooperation, which leads to heat loss or uneven distribution in the process of heat transfer, further reducing the performance of heating structure.

[0005] With the progress of science and technology and the continuous improvement of application demand, people put forward higher requirements for the stable heating of heating structure. Especially in some fields with strict requirements on temperature uniformity and stability, such as high-precision electronic equipment heating, medical equipment constant temperature heating, etc., the shortcomings of traditional heating structure are more and more obvious. Therefore, it has become an important task in the current technical field to develop a stable heating heating structure. This new type of heating structure needs to be innovated and optimized in terms of material selection, structure design and component cooperation, so as to realize more efficient, more uniform heat transfer and more stable heating performance, and meet the growing market demand. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a technical scheme which can solve the above problems.

[0007] A stable heating heating structure, comprising a heating structure body in a planar heating mode, the heating structure body comprising an aluminum alloy heat conductor and a thick film heating body with a stainless steel base material, the aluminum alloy heat conductor being located at the upper end of the thick film heating body and being tightly connected with the thick film heating body.

[0008] The cooperation end of the aluminum alloy heat conductor with the thick film heating body is a plane.

[0009] As a further scheme of the utility model, the aluminum alloy heat conductor is provided with a heat radiation layer on the end face away from the thick film heating body.

[0010] As a further scheme of the utility model, the heat radiation layer is a graphene material sprayed on the end face of the aluminum alloy heat conductor.

[0011] As a further scheme of the utility model, the aluminum alloy heat conductor and the thick film heating body are combined into an integral structure through welding.

[0012] As a further scheme of the utility model, the thickness of the aluminum alloy heat conductor is 3mm, and the thickness of the thick film heating body is 2mm.

[0013] As a further scheme of the utility model, the thick film heating body is located in the vertical projection range of the aluminum alloy heat conductor.

[0014] As a further scheme of the utility model, the heating resistor of the thick film heating body is formed on the stainless steel base material through printing and sintering process.

[0015] As a further scheme of the utility model, the thick film heating body further comprises an electrode, the electrode is used for connecting the heating resistor with an external power supply, and the electrode is fixed on the stainless steel base material through welding and sintering process.

[0016] The utility model further provides an electric kettle, which comprises a kettle body and a heating disc arranged at the lower end of the kettle body, the heating disc is provided with the heating structure body, and the aluminum alloy heat conductor in the heating structure body is in plane connection with the bottom end of the kettle body.

[0017] As a further scheme of the utility model, the heating disc is provided with an electric connector connected with the heating structure body, the thick film heating body is provided with a threaded connecting column extending from the lower end of the stainless steel base material, and the electric connector is provided with a connecting hole matched with the threaded connecting column.

[0018] Compared with the prior art, the utility model has the advantages of the following:

[0019] 1) Through the rapid heat conduction and uniform heat dissipation of the aluminum alloy heat conductor, and the close combination with the thick film heating body, the heat is effectively prevented from accumulating locally, the temperature distribution of the heating structure is more uniform during operation, the thermal stress and deformation risk caused by uneven temperature are reduced, the overall heating stability is improved, the thick film heating body of the stainless steel base material has good high temperature resistance, the combination with the aluminum alloy heat conductor can maintain stable heating performance for a long time, and performance degradation or failure caused by overheating is less likely to occur, thereby prolonging the service life of the heating structure;

[0020] 2) The aluminum alloy heat conductor can quickly transfer the heat generated by the thick film heating body, reduce the residence time of the heat in the heating body, improve the heat utilization efficiency, and meanwhile, the large-area heat transfer between the planar heating thick film heating body and the planar aluminum alloy heat conductor also accelerates the overall heating speed, so that the heating time is shortened and the energy consumption is reduced in actual application, for example, when the heating structure is used in an electric kettle, the water can be heated to the required temperature more quickly, thereby saving the waiting time and energy cost of the user;

[0021] 3) Due to the improved heating stability and heating efficiency of the heating structure, the performance of the product using the heating structure is also improved, for example, in an electric kettle, the water temperature can be more accurately controlled to avoid large water temperature fluctuations, thereby improving the heating precision and stability of the electric kettle;

[0022] 4) The temperature distribution of each part of the heating structure is more uniform due to the effect of the heat radiation layer, the graphene heat radiation layer can quickly radiate heat during the process of transferring heat to the upper end face by the aluminum alloy heat conductor, thereby avoiding excessive accumulation of heat in a certain part of the aluminum alloy heat conductor, so that the temperature of the entire heating structure is more balanced, and the uniform temperature distribution is crucial for improving the reliability and stability of the heating structure and reducing the thermal stress and deformation risk caused by uneven temperature.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Figure 1It is the structure schematic view of the heating structure body in the utility model;

[0026] Figure 2 It is the hierarchical structure schematic view of the heating structure body in the utility model;

[0027] Figure 3 It is the structure schematic view of the thick film heating body in the utility model;

[0028] Figure 4 It is the structure schematic view of the electric kettle in the utility model;

[0029] Figure 5 It is Figure 4 The sectional structure schematic view along the direction A-A in the utility model;

[0030] Figure 6 It is the structure schematic view of the heating structure body and the electric connector cooperation in the utility model.

[0031] The reference signs and names in the drawing are as follows:

[0032] 1, heating structure body, 2, aluminum alloy heat conductor, 3, thick film heating body, 4, heat radiation layer, 5, heating resistance, 6, electrode, 7, kettle body, 8, heating disc, 9, electric connector, 10, threaded connecting column, 11, connecting hole position, 12, stainless steel base material. Specific implementation

[0033] The technical scheme 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, apparently, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0034] Please refer to Figures 1-3 In the embodiments of the utility model, a heating structure stable to heat includes a heating structure body 1 that heats in a surface shape, the heating structure body 1 includes an aluminum alloy heat conductor 2 and a thick film heating body 3 with a base material of stainless steel, the aluminum alloy heat conductor 2 is located at the upper end of the thick film heating body 3 and is tightly connected with the thick film heating body 3.

[0035] The cooperation end of the aluminum alloy heat conductor 2 and the thick film heating body 3 is a plane.

[0036] The aluminum alloy has excellent heat conduction performance, high thermal conductivity, can quickly absorb and evenly diffuse the heat generated by the thick film heating body 3, the aluminum alloy heat conductor 2 located at the upper end of the thick film heating body 3 can quickly receive heat from the thick film heating body 3, because of good heat conductivity, the heat can be quickly transmitted in the aluminum alloy heat conductor 2, avoiding local accumulation of heat in the thick film heating body 3, thereby improving the overall heating stability, and the quality of the aluminum alloy is relatively light, while ensuring good heat conduction performance, without bringing too much weight burden to the whole heating structure, which is beneficial to the application and installation of the heating structure in various equipment;

[0037] The stainless steel has good high-temperature resistance and mechanical strength as the base material, the thick film heating body 3 takes the stainless steel as the base material, can stably work at a high temperature, is not easy to deform or damage, ensures the reliability and service life of the heating structure, and the surface heating characteristic of the thick film heating body 3 enables heat to be more evenly distributed on the surface, and the planar cooperation end of the aluminum alloy heat conductor 2 can realize large-area heat transfer, further improving the efficiency and uniformity of heat transfer;

[0038] The aluminum alloy heat conductor 2 is arranged at the upper end of the thick film heating body 3, the up-down structure layout conforms to the natural direction of heat conduction (the principle of hot air rising also has certain analogy in micro heat transfer, heat tends to be transmitted upward), which is beneficial to the smooth transmission of heat from the thick film heating body 3 to the aluminum alloy heat conductor 2, and meanwhile, the upper end position facilitates the aluminum alloy heat conductor 2 to further transmit heat to objects or media needing heating, improving the utilization efficiency of heat; the aluminum alloy heat conductor 2 is tightly connected with the thick film heating body 3, reducing the contact thermal resistance, ensuring that heat can be efficiently transmitted between the two, the planar cooperation end increases the contact area, so that heat transmission is more uniform and stable, the tight and planar connection mode effectively avoids uneven heating and energy loss caused by poor contact or local hot spots, improving the heating stability and energy conversion efficiency of the whole heating structure;

[0039] In summary, through the rapid heat conduction and uniform heat dissipation of the aluminum alloy heat conductor 2 and the tight combination with the thick film heating body 3, local heat accumulation is effectively avoided, the temperature distribution of the heating structure is more uniform during the working process, the thermal stress and deformation risk caused by uneven temperature are reduced, thereby improving the overall heating stability, the thick film heating body 3 of the stainless steel base material 12 has good high-temperature resistance, and the combination with the aluminum alloy heat conductor 2 can maintain stable heating performance in a long time work, is not easy to appear performance decline or failure caused by overheating, prolonging the service life of the heating structure;

[0040] The aluminum alloy heat conductor 2 can quickly transfer the heat generated by the thick film heating body 3, reduce the heat retention time in the heating body, improve the heat utilization efficiency, and the large-area heat transfer between the planar heating thick film heating body 3 and the planar aluminum alloy heat conductor 2 can also accelerate the overall heating speed. The efficient heat transfer and heating efficiency improvement can shorten the heating time and reduce the energy consumption in actual application, for example, when used in an electric kettle and the like, the water can be heated to the required temperature more quickly, saving the waiting time and energy cost of the user.

[0041] Due to the improved heating stability and heating efficiency of the heating structure, the performance of the product using the heating structure is also improved, for example, in an electric kettle, the water temperature can be more accurately controlled to avoid large water temperature fluctuations, thereby improving the heating precision and stability of the electric kettle.

[0042] In the embodiment of the utility model, the one end surface of the aluminum alloy heat conductor 2 far from the thick film heating body 3 is provided with a heat radiation layer 4, and the heat radiation layer 4 is a graphene material sprayed on the upper end surface of the aluminum alloy heat conductor 2.

[0043] The graphene has extremely high thermal conductivity, far exceeding general metal materials, and spraying the graphene as the heat radiation layer 4 on the one end surface (upper end surface) of the aluminum alloy heat conductor 2 far from the thick film heating body 3 can further enhance the heat transfer efficiency. After the aluminum alloy heat conductor 2 absorbs heat from the thick film heating body 3, the graphene heat radiation layer 4 can quickly radiate heat to the surrounding environment, thereby accelerating the heat dissipation speed of the entire heating structure. The efficient heat conduction characteristics enable the heat to be quickly transferred from the heating structure to the object or medium to be heated, and also help to reduce the temperature of the aluminum alloy heat conductor 2 itself, maintain the temperature balance of each part of the heating structure, and improve the heating stability.

[0044] The graphene has excellent heat radiation performance and can radiate heat to the surrounding space in the form of electromagnetic waves. In the heating structure, the graphene heat radiation layer 4 on the aluminum alloy heat conductor 2 can transfer heat in the form of radiation. Compared with the traditional heat dissipation through heat conduction and convection, the heat radiation can directly transfer heat to a long distance without the need for a medium, thereby improving the efficiency and range of heat transfer. This radiation heat dissipation method is of great significance to improving the overall heat dissipation effect of the heating structure, and can avoid heat accumulation in the heating structure, thereby further enhancing the heating stability and reliability of the heating structure.

[0045] The heat radiation layer 4 is arranged at the end face, that is, the upper end face of the aluminum alloy heat conductor 2 away from the thick film heating body 3, which is based on the direction of heat transfer and actual application requirements. The heat generated by the thick film heating body 3 is first transferred to the aluminum alloy heat conductor 2, and then transferred to the heat radiation layer 4 at the upper end face through the aluminum alloy heat conductor 2. In this process, the heat radiation layer 4 can timely radiate heat, avoiding excessive accumulation of heat in the aluminum alloy heat conductor 2, thereby ensuring smooth and efficient heat transfer. At the same time, in many actual application scenarios, such as electric kettles and other equipment, the upper end face of the heating structure is usually in close contact with the external environment. Arranging the heat radiation layer 4 at this position is conducive to faster heat dissipation to the surrounding space, improving the heat dissipation efficiency, and thereby maintaining the stable working temperature of the heating structure.

[0046] The aluminum alloy heat conductor 2 has good heat conduction performance and can quickly transfer the heat of the thick film heating body 3 to the upper end face. The combination of the graphene heat radiation layer 4 and the aluminum alloy heat conductor 2 fully utilizes the heat conduction advantage of the aluminum alloy and the radiation advantage of the graphene. After the aluminum alloy heat conductor 2 concentrates the heat to the upper end face, the graphene heat radiation layer 4 can quickly radiate the heat. The two cooperate with each other to realize an efficient heat transfer and dissipation process. This cooperation mode enables the heating structure to maintain good temperature distribution during operation, avoids local overheating, and improves the heating stability and reliability of the entire heating structure.

[0047] In the embodiment of the utility model, the aluminum alloy heat conductor 2 and the thick film heating body 3 are combined into an integral structure by welding.

[0048] Welding is a connection mode that uses or does not use filler material to make the welding parts reach atomic combination by heating, pressing or both. In the connection of the aluminum alloy heat conductor 2 and the thick film heating body 3, the welding process makes the atoms of the two materials diffuse and fuse at the interface to form a firm chemical bond. This interatomic bonding force is much greater than ordinary mechanical connection mode, which can ensure that the aluminum alloy heat conductor 2 and the thick film heating body 3 are tightly connected into an integral structure, effectively transfer heat, and improve the stability and reliability of the heating structure.

[0049] In the embodiment of the utility model, the thickness of the aluminum alloy heat conductor 2 is 3mm, and the thickness of the thick film heating body 3 is 2mm; the thick film heating body 3 is located in the vertical projection range of the aluminum alloy heat conductor 2.

[0050] The aluminum alloy has good heat conduction performance, and the thickness of the heat conduction body is set to 3mm. On the one hand, it can ensure that there is enough material volume to quickly absorb and transfer the heat generated by the thick film heating body 3. The relatively large heat capacity provided by the thick aluminum alloy heat conduction body 2 helps to buffer the instantaneous change of heat, making the heat transfer more stable. On the other hand, the thickness of 3mm meets the heat conduction demand without excessively increasing the weight and volume of the entire heating structure, balancing the heat dissipation efficiency and the compactness of the structure. For example, in the application of electric kettles and the like, this thickness can uniformly transfer heat to the inside of the kettle in a relatively short time, and at the same time, the kettle is not too bulky.

[0051] The thickness of 2mm is determined on the basis of comprehensive consideration of heating efficiency and heat uniformity. The relatively thin thick film heating body 3 can make heat be generated and transferred to the aluminum alloy heat conduction body 2 more quickly, reducing the heat conduction path and time loss inside the heating body, and improving the heating efficiency. At the same time, the appropriate thickness also helps to realize relatively uniform surface heating, avoid local overheating phenomenon, and ensure the heating stability of the entire heating structure. For example, in some electronic device heating applications with high requirements for temperature uniformity, the 2mm thick film heating body 3 can provide a relatively ideal temperature distribution.

[0052] The thickness optimization and positional relationship design of the aluminum alloy heat conduction body 2 and the thick film heating body 3 make the heat transfer process from the thick film heating body 3 to the aluminum alloy heat conduction body 2 more efficient. The 3mm thickness of the aluminum alloy heat conduction body 2 can quickly absorb the heat generated by the 2mm thick film heating body 3 and uniformly diffuse it. The thick film heating body 3 is located within the vertical projection range of the aluminum alloy heat conduction body 2, ensuring direct heat transfer and reducing heat loss in the transfer process. This efficient heat transfer efficiency can significantly shorten the heating time and improve the overall performance of the heating structure. For example, in the application of electric kettles, the water can be heated to the required temperature more quickly, improving the user experience.

[0053] In the embodiment of the utility model, the heating resistance 5 of the thick film heating body 3 is formed on the stainless steel base material 12 through printing and sintering process;The thick film heating body 3 further includes electrode 6, electrode 6 is used for connecting heating resistance 5 with external power supply, electrode 6 is fixed on stainless steel base material 12 through welding, sintering process.

[0054] The heating resistance 5 of the thick film heating body 3 has higher heat transfer efficiency due to the close combination with the stainless steel base material 12 and the optimized structural design, which can realize faster heating speed. For example, in household appliances such as electric kettles, the use of such thick film heating body 3 can significantly shorten the heating time of water, improve the use efficiency and experience of users.

[0055] Please refer to Figures 4-6The utility model also proposes an electric kettle, including the kettle body 7 and setting the heating disc 8 of kettle body 7 lower end, the heating disc 8 is provided with the heating structure body 1 as described above, wherein, the aluminium alloy heat conductor 2 in heating structure body 1 is with kettle body 7 bottom end plane interface.

[0056] In electric kettle, heating structure body 1 is arranged in the heating disc 8 of kettle body 7 lower end, wherein aluminium alloy heat conductor 2 is with kettle body 7 bottom end plane interface, this design makes the transmission path of heat from heating structure body 1 to kettle body 7 more direct and efficient, when heating structure body 1 works, the heat generated by thick film heating element 3 is first transmitted to aluminium alloy heat conductor 2, since aluminium alloy heat conductor 2 is with kettle body 7 bottom end plane interface, heat can rapidly and uniformly be transmitted to kettle body 7 bottom through plane contact interface, this direct plane contact reduces thermal resistance and energy loss in the process of heat transmission, compared with other non-plane or indirect contact mode, can more effectively transmit heat to kettle body 7, thereby accelerating the heating speed of water.

[0057] In the utility model embodiment, the heating disc 8 is provided with the electric connector 9 connected to the heating structure body 1, the thick film heating element 3 is provided with the threaded connecting column 10 extending at the lower end of the stainless steel base material 12, and the electric connector 9 is provided with the connecting hole position 11 matched with the threaded connecting column 10.

[0058] The electric connector 9 connected to the heating structure body 1 in the heating disc 8 is used to realize the electrical connection between the external power supply and the heating structure, so that the electric energy can be smoothly transmitted to the thick film heating element 3, thereby making it heat up.

[0059] In the production process of the electric kettle, the threaded connecting column 10 and the connecting hole position 11 of the electric connector 9 are designed to make the installation of the heating structure body 1 very simple, and the worker only needs to align the threaded connecting column 10 of the thick film heating element 3 with the connecting hole position 11 of the electric connector 9, and then can realize quick connection and fixation through the rotating mode.

[0060] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, so as to include all changes falling within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A heat-stable heating structure, characterized in that: The heating structure comprises a planar heating body, the heating structure comprising an aluminum alloy heat conductor and a thick film heating body with a stainless steel base material, the aluminum alloy heat conductor being located at the upper end of the thick film heating body and being tightly connected to the thick film heating body; Wherein, the mating ends of the aluminum alloy heat conductor and the thick film heating element are flat.

2. The heat-stable heating structure according to claim 1, characterized in that: A heat radiation layer is provided on one end surface of the aluminum alloy heat conductor away from the thick film heating element.

3. The heat-stable heating structure according to claim 2, characterized in that: The heat radiation layer is a graphene material sprayed on the upper end surface of the aluminum alloy heat conductor.

4. The heat-stable heating structure according to claim 1, characterized in that: The aluminum alloy heat conductor and the thick film heating element are combined into an integrated structure by welding.

5. The heat-stable heating structure according to claim 1, characterized in that: The thickness of the aluminum alloy heat conductor is 3 mm, and the thickness of the thick film heating element is 2 mm.

6. The heat-stable heating structure according to claim 1, characterized in that: The thick film heating element is located within the vertical projection range of the aluminum alloy heat conductor.

7. A heat-stable heating structure according to any one of claims 1 to 6, characterized in that: The heating resistor of the thick film heating element is formed on a stainless steel substrate through printing and sintering processes.

8. The heat-stable heating structure according to claim 7, characterized in that: The thick film heating element further includes an electrode, which is used to connect the heating resistor to an external power source. The electrode is fixed on the stainless steel substrate through welding and sintering processes.

9. An electric kettle, characterized in that: The invention comprises a kettle body and a heating plate arranged at the lower end of the kettle body, wherein the heating structure body according to any one of claims 1 to 8 is arranged in the heating plate, wherein the aluminum alloy heat conductor in the heating structure body is in plane connection with the bottom end of the kettle body.

10. The electric kettle according to claim 9, characterized in that: The heating plate is provided with an electrical connector for connecting electric wires to the heating structure body. The thick film heating element is provided with a threaded connection column extending from the lower end of its stainless steel substrate. The electrical connector is provided with a connection hole that matches the threaded connection column.

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