Heating assembly and electric chafing dish

Abstract

The utility model provides a heating assembly and an electric chafing dish, the heating assembly comprises a heating disc, a heating tube and a power connection terminal, the heating tube is fixedly arranged on the heating disc, the heating tube comprises a tube body section, an extension section and a lead-out section, the tube body section is embedded in the heating disc, the extension section protrudes out of the heating disc, and the lead-out section protrudes out of the extension section; the power connection terminal is fixedly arranged on the leading-out section, and the maximum distance between the power connection terminal and the disc face of the heating disc in the height direction is smaller than or equal to 30 mm. The distance between the power connection terminal and the heating disc is greatly reduced, so that the overall thickness of the heating assembly can be reduced, and a user can conveniently store and use the heating assembly; moreover, when the distance between the power connection terminal and the disc surface of the heating disc is reduced, the height of the bottom space of the heating disc is correspondingly reduced, and the heat dissipation rate is also reduced, so that the heating efficiency of the heating assembly can be improved.

Description

Technical Field

[0001] The utility model relates to the field of small household appliances, in particular to a heating component and an electric hot pot. Background Art

[0002] For cooking appliances using an electric heating plate, the thickness of the heating plate usually affects the overall height of the cooking appliance.

[0003] Especially for cooking appliances such as electric hot pots, if the height of the electric hot pot is relatively high, it usually causes great inconvenience for users during the process of picking up dishes, and they may even need to stand to pick up dishes. For existing electric heating plate products, due to the limitations of their manufacturing processes, the height between the plate surface of the electric heating plate and the power connection terminal is relatively high, usually greater than 43 mm, which will undoubtedly result in a relatively high height of the electric hot pot. Summary of the Utility Model

[0004] In view of this, it is necessary to provide a heating component and an electric hot pot to solve the above problems and reduce the thickness of the heating component.

[0005] The utility model first provides a heating component, including: a heating plate; a heating tube fixedly arranged on the heating plate, the heating tube includes a tube body section, an extension section and a lead-out section, the tube body section is embedded in the heating plate, the extension section protrudes from the heating plate, and the lead-out section protrudes from the extension section; and a power connection terminal fixedly arranged on the lead-out section, the maximum distance between the power connection terminal and the plate surface of the heating plate in the height direction is less than or equal to 30 mm.

[0006] In the above heating component, since the maximum distance between the power connection terminal and the plate surface of the heating plate in the height direction is less than or equal to 30 mm, the distance between the two is greatly reduced, so that the overall thickness of the heating component can be reduced, which is convenient for users to store and use; and when the distance between the outermost end of the power connection terminal and the plate surface of the heating plate decreases, the height of the space at the bottom of the heating plate will correspondingly decrease, and the heat dissipation rate will also decrease, thereby improving the heating efficiency of the heating component.

[0007] In one embodiment, the heating plate is integrally centrifugally cast and formed on the tube body section of the heating tube.

[0008] With this setting, the stability and reliability of the connection between the heating plate and the heating tube can be ensured, the production efficiency is relatively high, and the processing dimension accuracy can also be ensured, so that the thickness dimension of the heating component meets the requirements.

[0009] In one embodiment, the extension section is a milled pipe part, and the sum of the length of the milled pipe part and the length of the lead-out section satisfies less than or equal to 15 mm.

[0010] With such a setting, the extension section is processed by a pipe milling process, so that the length of the extension section is reduced, thereby reducing the total length of the extension section and the lead-out section.

[0011] In one embodiment, the heating plate is a die-cast part, and the heating tube is riveted and fixed to the heating plate.

[0012] With such a setting, the heating plate is formed by a die-casting process, and the heating tube is fixed to the heating plate by a riveting process, so that the two are stably and reliably connected, with high connection precision, and the processing method is simple and the cost is low.

[0013] In one embodiment, the lead-out section includes a first sub-section and a second sub-section bent with respect to the first sub-section. The first sub-section is connected to the extension section, the second sub-section is connected to the power connection terminal, the axis of the second sub-section is parallel to the plate surface of the heating plate, or the second sub-section is inclined from the end connected to the first sub-section toward the direction close to the heating plate.

[0014] With such a setting, the first sub-section is used to connect the extension section and the second sub-section. The second sub-section is bent with respect to the first sub-section. The axis of the second sub-section is parallel to the plate surface of the heating plate or the second sub-section is inclined toward the heating plate, so that the size of the second sub-section in the thickness direction of the heating component is smaller.

[0015] In one embodiment, the extension section is inclined with respect to the plate surface of the heating plate, and there is an included angle α between the axis of the extension section and the plate surface of the heating plate, and the included angle α satisfies: 50° ≤ α ≤ 70°.

[0016] With such a setting, the sizes of the extension section and the first sub-section in the thickness direction of the heating component can be reduced, and at the same time, it is avoided that the extension section is prone to breakage at the connection with the pipe body section due to the included angle α being too small.

[0017] In one embodiment, the power connection terminal includes a fixing part and a plugging part bent with respect to the fixing part, and the fixing part is fixedly arranged on the lead-out section.

[0018] With such a setting, the fixing part can increase the contact area between the power connection terminal and the lead-out section, improving the stability and reliability of the connection between the two; the plugging part can be electrically connected to other components in the cooking appliance by plugging, simplifying the connection structure, thereby reducing the size of the power connection terminal in the thickness direction of the heating component.

[0019] In one embodiment, the plugging part is in a sheet shape, and the sheet-shaped plugging part is parallel to the plate surface of the heating plate, or the plugging part is inclined from the end connected to the fixing part toward the direction close to the heating plate.

[0020] This is set such that the size of the insertion part in the thickness direction of the heating component is smaller.

[0021] In one embodiment, the fixing part is welded to the lead-out section.

[0022] This is set such that while ensuring a reliable connection between the fixing part and the lead-out section, the two are electrically connected.

[0023] The present utility model also provides an electric hot pot, including the heating component as described above.

[0024] This is set such that the overall thickness of the heating component is relatively thin, facilitating the user to store and use the electric hot pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a partial cross-sectional schematic view of the heating component according to an embodiment of the present utility model;

[0026] Figure 2 It is a cross-sectional schematic view of the heating component according to another embodiment of the present utility model;

[0027] Figure 3 It is Figure 2 an enlarged schematic view of part A in

[0028] Reference numerals: 10, heating plate; 20, heating tube; 21, tube body section; 22, extension section; 23, lead-out section; 231, first sub-section; 232, second sub-section; 30, power connection terminal; 31, fixing part; 32, insertion part; 40, insulating part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] It should be noted that when a component is referred to as being "installed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "arranged on" another component, it can be directly arranged on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0032] For cooking appliances that use an electric heating plate for heating, the thickness of the heating plate usually affects the overall height of the cooking appliance. Especially for cooking appliances such as electric hot pots, if the height of the electric hot pot is relatively high, it usually causes great inconvenience for users during the process of picking up food, and they may even need to stand to pick up food. For existing electric heating plate products, due to the limitations of their manufacturing processes, the height between the surface of the electric heating plate and the power connection terminal is relatively high, usually greater than 43 mm, which will undoubtedly result in a relatively high height of the electric hot pot.

[0033] To solve the above problems, as Figures 1 to 3 shown, this application first provides a heating component to reduce the thickness of the heating component.

[0034] Specifically, as Figures 1 to 2 shown, the heating component includes a heating plate 10, a heating tube 20, and a power connection terminal 30, where: the heating tube 20 is fixedly arranged on the heating plate 10, the heating tube 20 includes a tube body section 21, an extension section 22, and a lead-out section 23, the tube body section 21 is embedded in the heating plate 10, the extension section 22 protrudes from the heating plate 10, and the lead-out section 23 is convexly arranged on the extension section 22; the power connection terminal 30 is fixedly arranged on the lead-out section 23, and the maximum distance L1 between the power connection terminal 30 and the surface of the heating plate 10 in the height direction is less than or equal to 30 mm.

[0035] In the heating component provided by the embodiment of this utility model, the heating tube 20 is electrically connected to other components in the cooking appliance through the power connection terminal 30, and the heating plate 10 is used to heat the cookware placed on the heating plate 10. Since the maximum distance L1 between the power connection terminal 30 and the surface of the heating plate 10 in the height direction is less than or equal to 30 mm, the distance between the two is greatly reduced, thereby reducing the overall thickness of the heating component for easy storage and also facilitating food picking when users use cooking appliances such as electric hot pots; moreover, since the extension section 22, the lead-out section 23, and the power connection terminal 30 are all arranged protruding from the bottom of the heating plate 10, when the distance L1 between the power connection terminal 30 and the surface of the heating plate 10 decreases, the height of the space at the bottom of the heating plate 10 will correspondingly decrease, and the heat dissipation rate will also decrease accordingly, thereby improving the heating efficiency of the heating component. For example, when the maximum distance L1 between the power connection terminal 30 and the surface of the heating plate 10 in the height direction decreases from 43 mm to 30 mm, the heat dissipation rate will decrease by about 30%.

[0036] It is worth noting that the disk surface of the heating disk 10 refers to the plane where the upper surface of the heating disk 10 is located; when the upper surface of the heating disk 10 is a plane, the disk surface of the heating disk 10 is the flat upper surface. When the heating disk is a convex surface, the plane where the highest point on the convex surface of the heating disk is located can be understood as the disk surface of the heating disk 10; similarly, when the heating disk 10 is a concave surface, the plane where the highest point of the heating disk 10 is located is understood as the disk surface of the heating disk 10. In other words, the disk surface of the heating disk 10 refers to the plane where the highest point of the upper surface of the heating disk is located. It should be understood that this refers to the overall contour shape of the upper surface of the heating disk 10 and is not affected by assembly process errors or manufacturing process errors.

[0037] In addition, in the case where the maximum distance L1 in the height direction between the power connection terminal 30 and the disk surface of the heating disk 10 is less than or equal to 30 mm, the height direction can also be understood as the thickness direction of the heating component, and reference can be made to Figure 1 or Figure 2 the X-axis direction; for example, for a cooking appliance applying this heating component, when it is normally placed on a workbench, its height direction is also the longitudinal direction. The maximum distance L1 in the height direction between the power connection terminal 30 and the disk surface of the heating disk 10 is less than or equal to 30 mm, that is, the maximum thickness dimension of the heating component does not exceed 30 mm.

[0038] As Figures 1 to 2 shown, the disk surface of the heating disk 10 can be a plane or an arc surface, and the distance L1 between the power connection terminal 30 and the disk surface of the heating disk 10 is the dimension of any point on the disk surface of the heating disk 10 along the thickness direction of the heating component. The thickness direction of the heating component is Figures 1 to 2 the X-axis direction shown.

[0039] Among them, the maximum distance L1 in the height direction between the power connection terminal 30 and the disk surface of the heating disk 10 can be values such as 30 mm, 29 mm, 28 mm, 27 mm, etc. And the distance L1 between the power connection terminal 30 and the disk surface of the heating disk 10 also needs to be greater than the safety distance specified by safety regulations to ensure the use safety of the heating component.

[0040] As Figure 1 shown, in one embodiment, the heating disk 10 is integrally centrifugally cast and formed on the tube body section 21 of the heating tube 20. The heating disk 10 and the tube body section 21 are formed by centrifugal casting, which can ensure the stability and reliability of the connection between the heating disk 10 and the heating tube 20, has a high production efficiency, and can also ensure the machining dimensional accuracy of both, so that the thickness dimension of the heating component meets the requirements.

[0041] As Figure 1As shown, the extension section 22 is a milled pipe fitting, and the sum L2 of the length of the milled pipe fitting and the length of the lead-out section 23 satisfies L2 ≤ 15 mm. After the heating plate 10 and the pipe body section 21 are formed by the casting process, the extension section 22 protrudes from the bottom of the heating plate 10, and the end of the extension section 22 away from the heating plate 10 can be processed by the pipe milling process, so that the length of the extension section 22 is reduced, thereby reducing the total length of the extension section 22 and the lead-out section 23, and reducing the overall thickness of the heating assembly. Among them, the sum L2 of the length of the milled pipe fitting and the length of the lead-out section 23 can be 15 mm, 14 mm, 13 mm, etc., which are less than or equal to 15 mm and enable the distance between the power connection terminal 30 and the heating plate 10 to meet the safety regulations. Since the thickness of the centrifugally cast heating plate 10 is generally 15 mm, when the sum L2 of the length of the milled pipe fitting and the length of the lead-out section 23 satisfies L2 ≤ 15 mm, the distance L1 between the power connection terminal 30 and the plate surface of the heating plate 10 can satisfy L1 ≤ 30 mm.

[0042] Moreover, after the length of the extension section 22 is reduced, the lead-out section 23 protruding from the extension section 22 can also be processed by methods such as the pipe milling process, so that the length of the lead-out section 23 is correspondingly reduced, thereby reducing the overall length of the extension section 22 and the lead-out section 23.

[0043] As Figures 2 to 3 shown, in another embodiment, the heating plate 10 is a die-cast part, and the heating pipe 20 is riveted and fixed to the heating plate 10. The heating plate 10 can be formed by the die-casting process, and the heating pipe 20 is fixed to the heating plate 10 by the riveting process, which can stably and reliably connect the two without damaging the heating plate 10 and the heating pipe 20 themselves, with high connection accuracy, simple processing method, and low cost.

[0044] As Figure 3 shown, the lead-out section 23 includes a first sub-section 231 and a second sub-section 232 bent with respect to the first sub-section 231. The first sub-section 231 is connected to the extension section 22, the second sub-section 232 is connected to the power connection terminal 30, and the axis b of the second sub-section 232 is parallel to the plate surface a of the heating plate 10. Among them, the plate surface a is perpendicular to the X-axis. The first sub-section 231 extends from the extension section 22 and is used to connect the extension section 22 and the second sub-section 232, preventing the lead-out section 23 from being easily broken at the connection with the extension section 22. The second sub-section 232 is bent with respect to the first sub-section 231, so that without changing the total length of the lead-out section 23, the dimension of the lead-out section 23 in the thickness direction of the heating assembly can be reduced, thereby reducing the overall thickness of the heating assembly. Moreover, the axis b of the second sub-section 232 is parallel to the plate surface a of the heating plate 10, so that the dimension of the second sub-section 232 in the thickness direction of the heating assembly is smaller, and it is also convenient to connect the second sub-section 232 with the power connection terminal 30.

[0045] In other embodiments, the second sub-segment 232 may also be inclined towards the direction close to the heating plate 10 from the end connected to the first sub-segment 231, so that the extension of the second sub-segment 232 will not cause an increase in the thickness of the heating assembly, which is beneficial to reducing the overall thickness of the heating assembly.

[0046] As Figure 3 shown, the extension segment 22 is inclined with respect to the disk surface of the heating plate 10, and there is an included angle α between the axis c of the extension segment 22 and the disk surface a of the heating plate 10, and the included angle α satisfies: 50° ≤ α ≤ 70°. The extension segment 22 is inclined with respect to the disk surface of the heating plate 10, and the first sub-segment 231 extends along the extension direction of the extension segment 22, so that without changing the total length of the extension segment 22 and the first sub-segment 231, the dimensions of the extension segment 22 and the first sub-segment 231 in the thickness direction of the heating assembly can be reduced, thereby further reducing the overall thickness of the heating assembly. Among them, the included angle α between the axis c of the extension segment 22 and the disk surface a of the heating plate 10 can be any angle that satisfies 50° ≤ α ≤ 70°, such as 50°, 51°, 52°... 60°, 70°, etc., to avoid the situation that the dimensions of the extension segment 22 and the first sub-segment 231 in the thickness direction of the heating assembly are still large due to too large an included angle α, and at the same time avoid the situation that the extension segment 22 is prone to breakage at the connection with the pipe body segment 21 due to too small an included angle α.

[0047] As Figure 1 shown, the power connection terminal 30 includes a fixing portion 31 and a plugging portion 32 bent with respect to the fixing portion 31, and the fixing portion 31 is fixedly arranged on the lead-out segment 23. The fixing portion 31 is used to connect with the lead-out segment 23 and can be attached to the side wall of the lead-out segment 23 to increase the contact area between the power connection terminal 30 and the lead-out segment 23, and improve the stability and reliability of the connection between the two. The plugging portion 32 can be electrically connected to other components in the cooking appliance by plugging. Compared with connecting by fasteners such as screws, the connection structure can be simplified, thereby reducing the dimension of the power connection terminal 30 in the thickness direction of the heating assembly and reducing the overall thickness of the heating assembly.

[0048] As Figures 1 to 2 shown, the plugging portion 32 is in a sheet shape, and the sheet-shaped plugging portion 32 is parallel to the disk surface of the heating plate 10. The thickness of the sheet-shaped plugging portion 32 is small. The plugging portion 32 being parallel to the disk surface of the heating plate 10 makes the dimension of the plugging portion 32 in the thickness direction of the heating assembly the smallest, and it is also convenient to electrically connect the plugging portion 32 to other components in the cooking appliance. In other embodiments, the plugging portion is inclined towards the direction close to the heating plate from the end connected to the fixing portion, so that the extension of the plugging portion towards the direction closer to the heating plate will not cause an increase in the thickness of the heating assembly, which is beneficial to reducing the overall thickness of the heating assembly.

[0049] Among them, the fixing part 31 and the plugging part 32 are bent into an L shape. Specifically, as Figure 1 shown, when the leading-out section 23 is arranged perpendicular to the disk surface of the heating disk 10, the included angle between the fixing part 31 and the plugging part 32 can be 90°, so that the fixing part 31 can be attached to the side wall of the leading-out section 23, and the plugging part 32 is parallel to the disk surface of the heating disk 10. As Figures 2 to 3 shown, when the leading-out section 23 includes a first sub-section 231 and a second sub-section 232, the included angle between the fixing part 31 and the plugging part 32 can be greater than or equal to 90°, so that the fixing part 31 is arranged obliquely to the disk surface of the heating disk 10 and is attached to the side wall of the second sub-section 232, and the plugging part 32 is parallel to the disk surface of the heating disk 10.

[0050] Furthermore, the fixing part 31 can be welded to the leading-out section 23 by spot welding or the like. While ensuring reliable connection between the fixing part 31 and the leading-out section 23, the two are electrically connected. And the processing method is simple and convenient, with low cost.

[0051] As Figure 1 shown, an insulating part 40 is also sleeved on one end of the extending section 22 away from the heating disk 10. The insulating part 40 can be an insulating structure such as a rubber sleeve or a silica gel sleeve to ensure the use safety.

[0052] The embodiment of the present utility model also provides an electric hot pot, including the above-mentioned heating assembly. When the distance L1 between the power connection terminal 30 and the disk surface of the heating disk 10 is less than or equal to 30 mm, the overall thickness of the heating assembly is relatively thin, so that the electric hot pot can be conveniently stored. And when the pot body of the electric hot pot is placed on the heating assembly, the height will not be too high, so that the user can pick up the vegetables without standing during the process of picking up the vegetables, which is convenient to use.

[0053] Certainly, in other embodiments, this heating assembly can also be used in electric steamers, electric stew pots, rice cookers and other appliances that heat the pot body through the heating assembly. The embodiment of the present utility model does not make specific limitations here.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0055] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A heating component, characterized in that: include: Heating plate (10); A heating pipe (20) is fixedly mounted on the heating plate (10), the heating pipe (20) comprising a pipe body section (21), an extension section (22) and a lead section (23), the pipe body section (21) being embedded in the heating plate (10), the extension section (22) protruding from the heating plate (10), and the lead section (23) protruding from the extension section (22); and The power connection terminal (30) is fixedly arranged on the lead-out section (23), and the maximum distance between the power connection terminal (30) and the plate surface of the heating plate (10) in the height direction is less than or equal to 30 mm.

2. The heating assembly according to claim 1, characterized in that The heating plate (10) is integrally formed by centrifugal casting on the tube body section (21) of the heating tube (20).

3. The heating assembly according to claim 2, characterized in that The extension section (22) is a milled pipe, and the sum of the length of the milled pipe and the length of the lead-out section (23) is less than or equal to 15 mm.

4. The heating assembly according to claim 1, characterized in that The heating plate (10) is a die-casting part, and the heating tube (20) is fixed to the heating plate (10) by riveting.

5. The heating assembly according to claim 4, characterized in that The lead-out section (23) comprises a first sub-section (231) and a second sub-section (232) bent from the first sub-section (231); the first sub-section (231) is connected to the extension section (22); the second sub-section (232) is connected to the power terminal (30); the axis of the second sub-section (232) is parallel to the disk surface of the heating disk (10) or the second sub-section (232) is inclined from the end connected to the first sub-section (231) toward a direction close to the heating disk (10).

6. The heating assembly according to claim 5, characterized in that The extension section (22) is arranged obliquely relative to the disk surface of the heating disk (10), and an angle α is formed between the axis of the extension section (22) and the disk surface of the heating disk (10), and the angle α satisfies: 50°≤α≤70°.

7. The heating assembly according to claim 1, characterized in that The electrical terminal (30) comprises a fixing portion (31) and a plug-in portion (32) bent and arranged with respect to the fixing portion (31); the fixing portion (31) is fixed to the lead-out section (23).

8. The heating assembly according to claim 7, characterized in that The plug-in portion (32) is in the form of a sheet, and the sheet-shaped plug-in portion (32) is parallel to the plate surface of the heating plate (10), or the plug-in portion (32) is inclined from the end connected to the fixing portion (31) toward a direction close to the heating plate (10).

9. The heating assembly according to claim 7, characterized in that The fixing portion (31) is welded to the lead-out section (23).

10. An electric hot pot, characterized in that: Comprising a heating assembly according to any one of claims 1 to 9.

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