Heat disc mounting structure and base assembly resistant to thermal deformation

Abstract

The utility model relates to a kind of heat disc mounting structure and base assembly of heat deformation resistance, the heat disc is installed in the upper of heat shield;The heat disc includes the first temperature measurement installation site being opened in the center of the heat disc;Surrounding the first temperature measurement installation site is provided with multiple annular heat pipe installation sites;The heat disc is further provided with multiple main reinforcing ribs, and the edge of the first temperature measurement installation site is arranged radially outward;Supporting bone is perpendicular to the disc surface of the heat disc and is arranged in the end of the main reinforcing rib, and located the edge of the heat disc;The heat shield includes ring reinforcing rib around the center of the heat shield and protruding from the surface of the heat shield;The supporting bone is supported on the ring reinforcing rib.The heat disc mounting structure disclosed in the utility model embodiment can avoid the degradation of the surface contact to point contact of the heat disc and the heat shield caused by the deformation of the heat disc in high-power use scenarios, and solve the problem of heat efficiency decline caused by heat deformation.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, specifically to a heating plate and base assembly resistant to heat deformation. Background Technology

[0002] High-power electric cookware is lacking in the market; for example, 1800W high-power electric slow cookers are rare. The technical bottleneck lies in the heating element within the base assembly. This heating element is typically flat, and under continuous high heat loads, it expands due to uneven stress, leading to warping, dents, and other thermal deformations. This deformation causes bulges or depressions where the heating element was originally in contact with the bottom of the pot, reducing the contact area from efficient surface contact to point contact. This creates significant thermal resistance, preventing efficient heat transfer and creating a negative feedback loop: each high-power operation exacerbates the heating element deformation, further reducing the contact area and increasing thermal resistance, ultimately resulting in increasingly energy-intensive and slower-heating cookware. Furthermore, heating element deformation can cause misalignment between the heating element and other components such as the heat insulation cover and wiring terminals, posing a risk of short circuits and electrical leakage.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a heating plate mounting structure and base assembly that are resistant to thermal deformation.

[0005] The technical solution adopted in this embodiment of the utility model is as follows: A heating plate mounting structure resistant to heat deformation, wherein the heating plate is mounted above a heat insulation cover; the heating plate includes a first temperature measuring mounting position located at the center of the heating plate; multiple annular heating tube mounting positions are arranged around the first temperature measuring mounting position; the heating plate also has multiple main reinforcing ribs arranged radially outward from the edge of the first temperature measuring mounting position; a supporting bone is perpendicular to the surface of the heating plate and is located at the end of the main reinforcing ribs, and at the edge of the heating plate; the heat insulation cover includes annular reinforcing ribs surrounding the center of the heat insulation cover and protruding from the surface of the heat insulation cover; the supporting bone is supported on the annular reinforcing ribs.

[0006] A further technical solution is that the main reinforcing rib is segmented to avoid the location of the heating tube mounting position.

[0007] A further technical solution is that an auxiliary reinforcing rib is provided on the heating plate, located at the intervals of the main reinforcing rib; the auxiliary reinforcing rib extends from the outermost heating tube mounting position to the edge of the heating plate.

[0008] A further technical solution is to provide a heating tube mounting hole on the heat insulation cover; the end of the heating tube extends through the heating tube mounting hole to the bottom of the heat insulation cover and is fixed.

[0009] A further technical solution is to provide positioning elements on the heating plate; and to provide positioning holes on the heat insulation cover that correspond in both number and position to the positioning elements.

[0010] A further technical solution is to provide a second temperature measuring installation position at the center of the heat insulation cover; the temperature measuring device passes through the first temperature measuring installation position and the second temperature measuring installation position to fit against the bottom of the pot.

[0011] A further technical solution is that the edge height of the heat insulation cover is higher than the ring reinforcing rib; a seepage hole is provided between the edge of the heat insulation cover and the ring reinforcing rib.

[0012] A base assembly with a heat-deformation-resistant heating plate mounting structure as described in any of the preceding claims is provided. The base assembly is used to support and heat a cookware. The base assembly further includes a top cover, a middle frame, and a middle frame bracket. A first connector is provided inside the mounting opening of the top cover. A second connector is provided along the outer edge of the middle frame. The first connector and the second connector cooperate to lock the middle frame within the mounting opening. The middle frame bracket is fixed to the middle frame by a fastener. A heat insulation cover is installed inside the middle frame, and a connector edge surrounding the heat insulation cover is inserted into the gap between the middle frame and the middle frame bracket to fix the position of the heat insulation cover.

[0013] A further technical solution is that the base assembly also includes a bottom cover; the top cover and the middle frame bracket are both fixed on the bottom cover.

[0014] The beneficial effects of this utility model embodiment are as follows:

[0015] The heating plate mounting structure disclosed in this utility model embodiment forms a rigid support system through the main reinforcing ribs and edge support bones of the heating plate, in conjunction with the ring reinforcing ribs of the heat insulation cover. This system can effectively cope with thermal expansion stress and the weight pressure of the cookware in high-power usage scenarios, preventing the heating plate from deforming and degenerating from surface contact to point contact with the heat insulation cover, thus solving the problem of decreased thermal efficiency caused by thermal deformation.

[0016] The heating plate and the heat insulation cover are coaxially arranged with a first temperature measuring position and a second temperature measuring position to ensure that the temperature measuring device is always in contact with the bottom of the pot. This can be combined with common temperature control algorithms in the field to further avoid unnecessary local high heat in the heating plate during use, making the high-power heating operation more stable.

[0017] The base assembly with a heating plate mounting structure, along with its multiple interlocking structures, allows the various components of the base assembly to restrain each other. In the event of a drop or impact, the force will be distributed throughout the overall structure rather than concentrated on weak points such as the heating plate or heat insulation cover. At the same time, the main and auxiliary reinforcing ribs of the heating plate and the ring reinforcing ribs of the heat insulation cover can buffer the force and prevent damage to the heating tube, temperature measuring device, etc., making the overall structure more stable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the base assembly in an embodiment of the present utility model.

[0019] Figure 2 This is a bottom view of the heating plate in an embodiment of the present utility model.

[0020] Figure 3 This is a perspective view of the heating plate in an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the heat insulation cover in an embodiment of the present utility model.

[0022] Figure 5 This is a top view of the base assembly and the pot in the embodiment of this utility model.

[0023] Figure 6 for Figure 5 A sectional view along line AA.

[0024] Figure 7 for Figure 6 An enlarged schematic diagram of the C-section structure.

[0025] Figure 8 This is a schematic diagram of the base assembly without the heating plate in an embodiment of the present invention.

[0026] Figure 9 for Figure 5 Sectional view along line BB.

[0027] Figure 10 for Figure 9 An enlarged schematic diagram of the structure of part D in the middle.

[0028] In the diagram: 1. Heating plate; 101. Heating element mounting position; 102. Main reinforcing rib; 103. First temperature measuring mounting position; 104. Support frame; 105. Auxiliary reinforcing rib; 106. Positioning component; 107. Circuit post; 2. Heat insulation cover; 201. Ring reinforcing rib; 202. Heating element mounting hole; 203. Positioning hole; 204. Circuit hole; 205. Insertion edge; 206. Second temperature measuring mounting position; 207. Leakage hole; 4. Heating element; 5. Top cover; 501. First insertion component; 6. Middle frame; 601. Second insertion component; 7. Middle frame bracket; 8. Bottom cover. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0031] Figure 1 This is a schematic diagram of the base assembly in an embodiment of the present utility model. Figure 1 As shown, this utility model discloses a heating plate mounting structure resistant to heat deformation, which is part of a base assembly. The base assembly is used to support and heat, for example, a clay pot, or other types of cookware that are heat-resistant and have stable heat-conducting contact at the bottom. The heating plate 1 is mounted above the heat insulation cover 2.

[0032] Figure 2 This is a bottom view of the heating plate in an embodiment of the present invention. Figure 3 This is a perspective view of the heating plate in an embodiment of this utility model. Figure 2 , Figure 3As shown, the heating plate 1 includes a first temperature measuring mounting position 103 located at the center of the heating plate 1. Multiple rings of heating tube mounting positions 101 are arranged around the first temperature measuring mounting position 103. In this embodiment, there are two rings of heating tube mounting positions 101. The heating plate 1 also has multiple main reinforcing ribs 102, arranged radially outward from the edge of the first temperature measuring mounting position 103. In this embodiment, there are six main reinforcing ribs 102, evenly arranged, meaning that the included angle between adjacent main reinforcing ribs 102 is the same. A support rib 104 is vertically disposed at the end of the main reinforcing rib 102 and located near the edge of the heating plate 1. Figure 4 This is a schematic diagram of the heat insulation cover in an embodiment of this utility model. Figure 4 As shown, the heat insulation cover 2 includes a ring reinforcing rib 201 that surrounds the center of the heat insulation cover 2 and protrudes from the surface of the heat insulation cover 2. Figure 5 This is a top view of the base assembly and the pot in the embodiment of this utility model. Figure 6 for Figure 5 A sectional view along line AA. Figure 7 for Figure 6 An enlarged schematic diagram of the C-section structure. (See diagram below.) Figures 5-7 As shown, when the heating plate 1 is installed above the heat insulation cover 2, the support bone 104 is supported on the ring reinforcing rib 201.

[0033] In this embodiment, multiple evenly distributed main reinforcing ribs 102 are designed below the outer ring of the heating plate 1. Together with the support frame 104, they distribute the weight of the cookware and its contents evenly across multiple support points, preventing excessive local stress due to concentrated weight and reducing the risk of deformation from the outset. In some embodiments, the main reinforcing ribs 102 may also be unevenly distributed, achieving a certain level of support and deformation prevention. However, this can result in excessively large spacing between some support points, potentially leading to localized deformation in areas of concentrated stress, and weakening overall deformation resistance compared to even distribution. The support frame 104 is vertically positioned at the ends of the main reinforcing ribs 102 and located at the edge of the heating plate 1, specifically in areas of high stress concentration. It is supported in the opposite direction by the ring reinforcing ribs 201 of the heat insulation cover 2. This transforms the stress distribution from a single structural element to a coordinated support system formed by the heating plate 1 and the heat insulation cover 2, significantly improving deformation resistance and offsetting most of the downward deformation force caused by weight, thus providing more targeted resistance to mechanical deformation.

[0034] Furthermore, the main reinforcing rib 102 is segmented to avoid the location of the heating element mounting position 101. For example... Figure 2As shown, the main reinforcing rib 102 on the heating plate 1 is segmented, not a complete straight line. The segments avoid the location of the heating element mounting position 101. However, overall, the main reinforcing rib 102 can still be seen as a single unit from the heating plate 1, radiating outwards from the edge of the first temperature measuring mounting position 103 to the edge of the heating plate 1. This ensures the rigidity of the heating plate 1 while accommodating the installation requirements of the heating element 4, avoiding structural conflicts. Although the main reinforcing rib 102 is segmented, each segment can still independently bear local rigid support. Overall, the bending and deformation resistance of the heating plate 1 still meets the load-bearing requirements.

[0035] Furthermore, auxiliary reinforcing ribs 105 are also provided on the heating plate 1, located at intervals of the main reinforcing ribs 102. The auxiliary reinforcing ribs 105 extend from the outermost heating tube mounting positions 101 to the edge of the heating plate 1. The auxiliary reinforcing ribs 105 further enhance the overall rigidity of the heating plate 1, and at the same time specifically reinforce the heating tube mounting positions 101. The heating tube mounting positions 101 need to fix the heating tube 4 and withstand the thermal expansion and contraction stress of the heating tube 4 during operation. The auxiliary reinforcing ribs 105 provide additional structural support for them.

[0036] Furthermore, a heating element mounting hole 202 is provided on the heat insulation cover 2. Figure 8 This is a schematic diagram of the base assembly without the heating plate in this embodiment of the present invention. The end of the heating tube 4 extends through the heating tube mounting hole 202 to the bottom of the heat insulation cover 2 and is fixed thereunder. The heating tube 4 is not only installed in the heating tube mounting position 101, but its end also passes through the heating tube mounting hole 202 and is fixed to the bottom cover 8 below. This prevents the heating tube 4 from shifting and ensures a stable heating position. A positioning member 106 is also provided on the heating plate 1. The heat insulation cover 2 is provided with positioning holes 203 that correspond in number and position to the positioning members 106, which allows for quick assembly of the heating plate 1 and the heat insulation cover 2. This ensures that the support rib 104 and the ring reinforcing rib 201 of the heat insulation cover 2 are aligned and supported, and also prevents the two from shifting after installation, thus improving structural stability. In addition, multiple hollow wire posts 107 are provided on the heating plate 1, and multiple second wire holes 204 are provided on the heat insulation cover 2. These holes are used to pass the wires controlling the heating tube 4 through the wire posts 107, bundle them together, and then extend them through the heat insulation cover 2 to the bottom cover 8 for connecting circuit boards, etc. The specific circuit wiring method is not the focus of this utility model and can be implemented using existing technology.

[0037] Furthermore, a second temperature measuring mounting position 206 is provided at the center of the heat insulation cover 2. The temperature measuring device 3 passes through the first temperature measuring mounting position 103 and the second temperature measuring mounting position 206 to fit against the bottom of the pot. The selection and assembly of the temperature measuring device 3 can use conventional technical means in the field and are not the innovation of this utility model. For example, commercially available mature temperature detection elements, such as thermocouples and NTC temperature sensors, can be directly selected. In the actual use of the base assembly, a combination of staged power control and temperature prediction can be adopted. For example, after the system is started, it first heats at full power of 1800W for 5 minutes to achieve rapid heating; then the power is reduced to 1100W for continuous heating. The temperature of the bottom of the pot is monitored in real time by the NTC temperature sensor, and the actual temperature of the heating plate is indirectly calculated based on the heat conduction model. For example, the safe working range of the heating plate can be set to 350℃–400℃. When the predicted temperature approaches or exceeds the 400℃ threshold, the system immediately cuts off the heating; when the temperature drops below 350℃, the heating is restarted. This closed-loop control logic ensures that the temperature of the heating plate 1 remains stable within a safe range. Combined with the installation structure of the heating plate 1 mentioned above, it can better avoid thermal deformation caused by overheating.

[0038] Furthermore, the edge height of the heat insulation cover 2 is higher than that of the annular reinforcing rib 201. A seepage hole 207 is provided between the edge of the heat insulation cover 2 and the annular reinforcing rib 201. When the cookware is heated, internal liquid may overflow, most likely from the edge of the cookware. The heat insulation cover 2 forms an outer barrier, initially blocking the downward flow of liquid. Simultaneously, the annular reinforcing rib 201, which is not only a structural reinforcement but also acts as an inner barrier, confining the liquid to the area between the edge of the heat insulation cover 2 and the annular reinforcing rib 201. This maximizes the probability of the liquid draining through the seepage hole 207 to the bottom cover 8 and then out of the base assembly, preventing the liquid from directly seeping into other parts of the base assembly. Partitions corresponding to the positions of the seepage holes 207 can also be provided on the bottom cover 8 to ensure that the drained liquid does not affect electronic components or heating elements in other areas, preventing short circuits, corrosion, and other malfunctions caused by the liquid, thus improving the safety and service life of the base assembly.

[0039] This embodiment also discloses a base assembly with the heat-resistant heating plate mounting structure described above, the base assembly being used to support and heat the cookware. Figure 9 for Figure 5 Sectional view along line BB. Figure 10 for Figure 9 An enlarged schematic diagram of the structure of section D in the middle. (Combined with...) Figure 9 , Figure 10The base assembly also includes an upper cover 5, a middle frame 6, and a middle frame support 7. A first connector 501 is provided inside the mounting opening of the upper cover 5. A second connector 601 is provided on the outer edge of the middle frame 6. In this embodiment, the first connector 501 is a hook structure surrounding the inner side of the mounting opening, with the hook opening facing upwards. The second connector 601 is a vertical edge surrounding the outer side of the middle frame 6, inserted into the hook opening. The first connector 501 and the second connector 601 cooperate and lock, securing the middle frame 6 within the mounting opening. The middle frame support 7 is fixed to the middle frame 6 by screws or similar fasteners. The heat insulation cover 2 is installed inside the middle frame 6, and the insertion edge 205 surrounding the heat insulation cover 2 is inserted into the gap between the middle frame 6 and the middle frame support 7, fixing the position of the heat insulation cover 2. The base assembly also includes a bottom cover 8. Both the upper cover 5 and the middle frame support 7 are fixed to the bottom cover 8.

[0040] In this embodiment, the upper cover 5 and the middle frame 6 are connected by a first connector 501 and a second connector 601, and the middle frame 6 is fixed to the middle frame support 7, forming a mutually locked and robust connection structure. The insertion edge 205 of the heat shield 2 is embedded in the gap between the middle frame 6 and the middle frame support 7, which can simultaneously constrain the heat shield 2 radially and circumferentially, ensuring that it can maintain a stable relative position. Overall, the base assembly has multiple interlocking structures between the upper cover 5 and the middle frame 6, between the middle frame 6 and the middle frame support 7, and between the middle frame 6, the middle frame support 7 and the heat shield 2, which restrain and constrain each other, making the base assembly more stable. When the base assembly is dropped, the force is transmitted to the entire structure, rather than acting directly on the weak connection points, so the base assembly has excellent stability in drop tests. The rigid support system formed between the heating plate 1 and the heat insulation cover 2, with the main reinforcing rib 102 and the supporting bone 104 of the heating plate 1 tightly supporting the ring reinforcing rib 201 of the heat insulation cover 2, can independently resist the mechanical deformation caused by the weight of the cookware; while the multiple interlocking structures of the base assembly can firmly fix the heating plate 1 and the heat insulation cover 2 inside the base, preventing them from shifting due to shaking or collision during transportation, making the entire base assembly more robust and stable.

[0041] Furthermore, as mentioned above, the structure of the heat insulation cover 2 itself has a certain technical effect of guiding the overflow of the pot. Combined with the structure of the base assembly, this protection is further strengthened: the fixing of the middle frame 6 and the middle frame bracket 7 can ensure that the insertion edge 205 of the heat insulation cover 2 is almost not loose, and the leakage hole 207 is always aligned with the drainage position divided by the partition plate in the bottom cover 8, which can avoid the problem of liquid deviating from the drainage path due to the displacement of the heat insulation cover 2.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, 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. A heating plate mounting structure resistant to heat deformation, characterized in that, The heating plate (1) is installed above the heat insulation cover (2); the heating plate (1) includes a first temperature measuring mounting position (103) located at the center of the heating plate (1); multiple ring-shaped heating tube mounting positions (101) are arranged around the first temperature measuring mounting position (103); the heating plate (1) is also provided with multiple main reinforcing ribs (102) arranged radially outward from the edge of the first temperature measuring mounting position (103); the support bone (104) is perpendicular to the surface of the heating plate (1) and is located at the end of the main reinforcing rib (102) and at the edge of the heating plate (1); the heat insulation cover (2) includes a ring reinforcing rib (201) surrounding the center of the heat insulation cover (2) and protruding from the surface of the heat insulation cover (2); the support bone (104) is supported on the ring reinforcing rib (201).

2. The heat-resistant heating plate mounting structure according to claim 1, characterized in that, The main reinforcing rib (102) is segmented to avoid the position of the heating tube mounting position (101).

3. The heat-resistant heating plate mounting structure according to claim 1, characterized in that, An auxiliary reinforcing rib (105) is also provided on the heating plate (1), which is located at the interval of the main reinforcing rib (102); the auxiliary reinforcing rib (105) extends from the outermost heating tube mounting position (101) to the edge of the heating plate (1).

4. The heat-resistant heating plate mounting structure according to claim 1, characterized in that, A heating tube mounting hole (202) is provided on the heat insulation cover (2); the end of the heating tube (4) extends through the heating tube mounting hole (202) to the bottom of the heat insulation cover (2) and is fixed.

5. The heat-resistant heating plate mounting structure according to claim 1, characterized in that, A positioning element (106) is provided on the heating plate (1); a positioning hole (203) is provided on the heat insulation cover (2) that corresponds to the number and position of the positioning element (106).

6. The heat-resistant heating plate mounting structure according to claim 1, characterized in that, A second temperature measuring installation position (206) is provided in the center of the heat insulation cover (2); the temperature measuring device (3) passes through the first temperature measuring installation position (103) and the second temperature measuring installation position (206) to fit against the bottom of the pot.

7. The heat-deformation-resistant heating plate mounting structure according to claim 1, characterized in that, The edge height of the heat insulation cover (2) is higher than that of the ring reinforcing rib (201); a seepage hole (207) is provided between the edge of the heat insulation cover (2) and the ring reinforcing rib (201).

8. A base assembly provided with a heating plate mounting structure resistant to heat deformation as described in any one of claims 1 to 7, characterized in that, The base assembly is used to support and heat the cookware; the base assembly also includes an upper cover (5), a middle frame (6) and a middle frame bracket (7); a first plug-in (501) is provided inside the mounting opening of the upper cover (5); a second plug-in (601) is provided on the outer edge of the middle frame (6); the first plug-in (501) and the second plug-in (601) cooperate to lock the middle frame (6) in the mounting opening; the middle frame bracket (7) is fixed to the middle frame (6) by a fastener; the heat insulation cover (2) is installed inside the middle frame (6), and the plug-in edge (205) surrounding the heat insulation cover (2) is inserted into the gap between the middle frame (6) and the middle frame bracket (7) to fix the position of the heat insulation cover (2).

9. The base assembly according to claim 8, characterized in that, The base assembly also includes a bottom cover (8); the top cover (5) and the middle frame bracket (7) are both fixed on the bottom cover (8).

Images