Thick film heating plate and inner container of electric kettle
By directly forming the inner liner chassis or chassis printing heating slurry layer in the electric kettle, the problem of low scale formation and heat transfer efficiency is solved, and more efficient heating and longer service life is achieved.
Patent Information
- Application Number
- CN202421687185.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In existing electric kettles, the high temperature zone at the heating pipe position is prone to form scale, which affects the heat transfer efficiency and service life, and the heat transfer path passes through the substrate, resulting in a decrease in efficiency.
A thick film heating tray is used, and the heating slurry layer is directly formed into the inner liner chassis or the chassis printing heating slurry layer, and heat is directly transferred to the inner liner, and the intermediate layer of the substrate is cancelled to improve heat transfer efficiency.
Improves heating uniformity and efficiency, reduces scale formation, extends service life and reduces energy consumption.
Smart Images
Figure CN223111470U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric kettles, and particularly relates to a thick film heating plate and an inner liner of an electric kettle. Background Technique
[0002] Most of the electric kettles on the current market use electric heating tube heating technology. Basically, an aluminum heating tube + a heat transfer aluminum plate are welded to the lower side of the chassis of a stainless steel inner liner through a soldering agent and solder. Since the heating tube is an open circular ring, during the heating process of the kettle, the position of the heating tube is the high-temperature area, and other positions of the chassis are the low-temperature areas. Therefore, after boiling tap water, the inner annular area of the inner liner corresponding to the heating tube is very easy to condense white scale. After the scale is formed, it further affects the heat transfer efficiency of the heating tube, resulting in increased energy consumption of the electric kettle and reduced service life of the kettle!
[0003] For such reasons, relevant thick film heating plate technologies have been developed. The thick film heating plate is composed of a substrate and a heating paste. The heating paste generates heat after being energized, and the heating paste can be evenly distributed on the chassis of the inner liner, which can increase the heating area of the entire kettle and greatly improve the heating uniformity, thereby improving the heating efficiency and energy efficiency of the electric kettle;
[0004] However, the heat of the heating paste is first transferred to the substrate and then to the inner liner. Since the heat transfer path needs to pass through the substrate, the substrate constitutes an obstacle to heat transfer, thus affecting the heat transfer efficiency. Content of the Utility Model
[0005] The purpose of the utility model is to provide a thick film heating plate and an inner liner of an electric kettle. The thick film heating plate directly constitutes the chassis of the inner liner, or the chassis of the inner liner is directly printed with a heating paste layer, and the heat of the heating paste layer is directly transferred to the inner liner, improving the heat transfer efficiency and heating efficiency.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A thick film heating plate of an electric kettle, the thick film heating plate includes a metal disc body, an insulating layer and a heating paste layer, and the metal disc body includes a bottom wall and a side wall;
[0008] The lower surface of the bottom wall is successively provided with an insulating layer and a heating paste layer;
[0009] The top end of the side wall is hermetically connected to the wall of the inner liner of the kettle.
[0010] In some embodiments, the top end of the side wall is welded to the wall of the inner liner.
[0011] In some embodiments, the thickness of the side wall is the same as the thickness of the wall of the inner liner.
[0012] In some embodiments, the materials of the metal disc body and the inner liner are both stainless steel.
[0013] In some embodiments, the thickness of the side wall is between 0.3 mm and 0.8 mm.
[0014] In some embodiments, the height of the side wall is between 5 mm and 30 mm.
[0015] In some embodiments, the lower surface of the bottom wall is a plane, and the thickness of the bottom wall is between 1.0 mm and 2.5 mm.
[0016] An inner liner of an electric kettle, the inner liner includes a liner wall and a chassis, and the chassis includes a bottom wall and a side wall;
[0017] An insulating layer and a heating paste layer are sequentially provided on the lower surface of the bottom wall;
[0018] The top end of the side wall is welded to the liner wall of the inner liner.
[0019] In some embodiments, the materials of the liner wall and the chassis are both stainless steel, and the thickness of the liner wall is the same as that of the side wall.
[0020] The beneficial effects of the present utility model: The thick film heating disc directly forms the chassis of the inner liner, or the heating paste layer is directly printed on the chassis of the inner liner, and the heat of the heating paste layer is directly transferred to the inner liner, improving the heat transfer efficiency and the heating efficiency. Description of the Drawings
[0021] Figure 1 It is a sectional view of the thick film heating disc and the inner liner of the first embodiment of the present utility model;
[0022] Figure 2 It is Figure 1 exploded view of;
[0023] Figure 3 It is a structural diagram of the thick film heating disc of the first embodiment of the present utility model;
[0024] Figure 4 It is another view structural diagram of the thick film heating disc of the first embodiment of the present utility model;
[0025] Figure 5 It is a sectional view of the metal disc body of the first embodiment of the present utility model;
[0026] Figure 6 It is a sectional view of the inner liner of the second embodiment of the present utility model;
[0027] Figure 7 It is a structural diagram of the chassis of the second embodiment of the present utility model;
[0028] Wherein: 1 - thick film heating plate; 11 - metal plate body; 11a - bottom wall; 11b - side wall; 12 - insulating layer; 13 - heating paste layer; 2 - inner container; 21 - container wall; 22 - chassis. Detailed implementation mode
[0029] The following further elaborates on the present utility model in conjunction with the attached drawings.
[0030] First embodiment:
[0031] Refer to Figures 1 to 5 , a thick film heating plate 1 of an electric kettle, the thick film heating plate 1 comprising a metal plate body 11, an insulating layer 12 and a heating paste layer 13;
[0032] The metal plate body 11 includes a bottom wall 11a and a side wall 11b; the heating plate is in a disc shape, and its cross-sectional shape is similar to a "U" shape;
[0033] The lower surface of the bottom wall 11a is successively provided with an insulating layer 12 and a heating paste layer 13; both the insulating layer 12 and the heating paste layer 13 can be provided on the lower surface of the bottom wall 11a by printing. The insulating layer 12 can be provided with multiple layers. For example, the metal plate body 11 first prints one or more layers of the insulating layer 12, then prints the heating paste layer 13, and then prints one or more layers of the insulating layer 12 to improve insulation and safety; the heating paste layer 13 generates heat after being energized, and the bottom wall 11a transfers heat;
[0034] The top end of the side wall 11b is hermetically connected to the container wall 21 of the inner container 2.
[0035] The metal plate body 11 of the thick film heating plate 1 is connected to the bottom of the inner container 2 and forms a part of the inner container 2, forming an integral structure with the inner container 2. The inner container 2 is more beautiful, and moreover, the metal plate body 11 can transfer heat to liquids such as water faster and more directly, improving the heat transfer efficiency and the heating efficiency.
[0036] Wherein, the metal plate body 11 can be made into a disc shape by a spinning and stretching process.
[0037] The top end of the side wall 11b is welded to the container wall 21 of the inner container 2. For example, refer to Figure 1 , perform circumferential welding at the welding position C to achieve a sealed connection.
[0038] In order to improve the aesthetics, after welding, the weld can be leveled by a roller, and then polished.
[0039] The thickness of the side wall 11b is the same as the thickness of the container wall 21, so that the thermal deformation during welding is more consistent, reducing welding deformation and improving welding quality. Moreover, the same thickness setting makes the inner and outer sides of the wall surface aligned after welding, more beautiful and having a more integral visual effect.
[0040] The materials of the metal disk body 11 and the inner liner 2 are both stainless steel. The same material is beneficial to improving the welding quality, and stainless steel meets the food safety standards, enabling the metal disk body 11 of the thick film heating disk 1 to directly form a part of the inner liner 2 and be directly in contact with the liquid to be heated such as water.
[0041] The materials of the metal disk body 11 and the inner liner 2 can also be selected as titanium or the like.
[0042] Reference Figure 5 , the thickness of the side wall 11b is between 0.3 mm and 0.8 mm, with a suitable thickness, meeting the strength and welding requirements at the same time.
[0043] The height H of the side wall 11b is between 5 mm and 30 mm, providing the required space for welding, facilitating welding and also facilitating grinding after welding.
[0044] The lower surface of the bottom wall 11a is flat, facilitating the printing of the insulating layer 12 and the heating paste layer 13. The thickness of the bottom wall 11a is between 1.0 mm and 2.5 mm, enabling the metal disk body 11 to have a certain energy storage function and then transfer the heat to the liquid such as water.
[0045] Second embodiment:
[0046] Reference Figure 6 And Figure 7 , an inner liner 2 of an electric kettle, the inner liner 2 includes a liner wall 21 and a chassis 22, and the chassis 22 includes a bottom wall 11a and a side wall 11b;
[0047] The insulating layer 12 and the heating paste layer 13 are successively provided on the lower surface of the bottom wall 11a;
[0048] The top end of the side wall 11b is welded and connected to the liner wall 21;
[0049] In order to integrate the thick film heating and the inner liner 2, the inner liner 2 is divided into two components, the liner wall 21 and the chassis 22. The chassis 22 is in a disk shape, and its bottom wall 11a can first be provided with the insulating layer 12 and the heating paste layer 13 by printing, and then the chassis 22 is welded to the liner wall 21 to form a complete inner liner 2.
[0050] After the heating paste layer 13 is energized, it generates heat, and the heat is transferred to the chassis 22 faster and more directly, thereby heating the liquid such as water. In this way, the chassis 22 is equivalent to a thick film heating disk; and the heat is transferred to the bottom wall 11a of the chassis 22 faster and more directly, that is, it can be quickly transferred to the inner liner 2, improving the heat transfer efficiency and the heating efficiency.
[0051] Among them, the chassis 22 can be made into a disk shape by a spinning and stretching process, and the side wall 11b can also be appropriately shaped by turning.
[0052] The top end of the side wall 11b is connected to the tank wall 21 by circumferential welding, thus achieving a sealed connection. To improve the aesthetics, after welding, the weld seam can be leveled by a roller and then polished.
[0053] The materials of the tank wall 21 and the chassis 22 are both stainless steel. The thickness of the tank wall 21 is the same as that of the side wall 11b, which is beneficial to improving the welding quality, making the inner and outer sides of the wall surface aligned after welding, more aesthetically pleasing, and having a more integrated visual effect, forming an integrated structure.
[0054] The above-disclosed are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model.
Claims
1. A thick film heating plate for an electric kettle, characterized in that, The thick-film heating plate (1) comprises a metal plate body (11), an insulating layer (12) and a heating paste layer (13), and the metal plate body (11) comprises a bottom wall (11a) and a side wall (11b); The insulating layer (12) and the heating paste layer (13) are sequentially arranged on the lower surface of the bottom wall (11a); The top end of the side wall (11b) is hermetically connected to the wall (21) of the inner container (2).
2. The thick film heating plate of an electric kettle according to claim 1, characterized in that The top end of the side wall (11b) is welded to the wall (21) of the inner container (2).
3. The thick film heating plate of an electric kettle according to claim 2, characterized in that, The thickness of the side wall (11b) is the same as the thickness of the wall (21).
4. The thick film heating plate of an electric kettle according to claim 3, characterized in that The materials of the metal plate body (11) and the inner container (2) are both stainless steel or titanium.
5. The thick film heating plate of an electric kettle according to claim 4, characterized in that, The thickness of the side wall (11b) is between 0.3 mm and 0.8 mm.
6. The thick film heating plate of an electric kettle according to claim 5, characterized in that, The height of the side wall (11b) is between 5 mm and 30 mm.
7. The thick film heating plate of an electric kettle according to claim 5 or 6, characterized in that, The lower surface of the bottom wall (11a) is a plane, and the thickness of the bottom wall (11a) is between 1.0 mm and 2.5 mm.
8. The inner container of an electric kettle, characterized in that, The inner container (2) comprises a wall (21) and a bottom plate (22), and the bottom plate (22) comprises a bottom wall (11a) and a side wall (11b); The insulating layer (12) and the heating paste layer (13) are sequentially arranged on the lower surface of the bottom wall (11a); The top end of the side wall (11b) is welded to the wall (21) of the inner container (2).
9. The inner container of an electric kettle according to claim 8, characterized in that The materials of the wall (21) and the bottom plate (22) are both stainless steel, and the thickness of the wall (21) is the same as the thickness of the side wall (11b).