Heat disc assembly and cooking appliance

Abstract

This application discloses a heating plate assembly and a cooking appliance. The heating plate assembly includes a plate body, a heat-conducting component, a heating element, and a heat-insulating component. The heating element includes a cold end and a hot end, with the heat at the hot end being greater than that at the cold end. The heating element, the heat-conducting component, and the plate body are stacked. A heat-conducting groove is provided on the heat-conducting component corresponding to the area of ​​the hot end. The heating plate assembly also includes an auxiliary heat-conducting component, separate from the heat-conducting component. The auxiliary heat-conducting component is located in the heat-conducting groove and is stacked with the heat-insulating component. In the thickness direction of the heating plate assembly, the heat-insulating component and the auxiliary heat-conducting component are located between the hot end and the plate body; the thermal conductivity of both the heat-conducting component and the auxiliary heat-conducting component is greater than that of the heat-insulating component. The heat from the hot end is transferred to the plate body through the heat-insulating component and the auxiliary heat-conducting component, and the heat from the cold end is transferred to the plate body through the heat-conducting component. This heating plate assembly helps to reduce or avoid scorching, has good heating effect, and does not require reducing the heating power of the heating plate assembly, resulting in a relatively short cooking time.

Description

Technical Field

[0001] This application relates to small household appliances, and more particularly to heating plate assemblies and cooking utensils. Background Technology

[0002] Cooking appliances typically use heating plate assemblies to heat food. A heating plate assembly consists of a plate body and heating elements. However, the heating elements generate heat unevenly; the portion near the wiring terminals generates less heat, forming a cold zone, while the portion further away from the wiring terminals generates more heat, forming a hot zone. During cooking, the portion of the plate body corresponding to the hot zone gets higher, causing the food to burn.

[0003] Existing technologies typically reduce the power of the heating element to decrease the risk of food burning. However, this results in longer cooking times and does not effectively prevent food burning. Summary of the Invention

[0004] The purpose of this application is to disclose a heating plate assembly and a cooking appliance. The heating plate assembly helps to prevent scorching and reduces cooking time.

[0005] In a first aspect, this application discloses a heating plate assembly, which includes a plate body, a heat-conducting component, a heating component, and a heat-insulating component, wherein:

[0006] The heating element includes a cold end and a hot end;

[0007] The heating element, the heat-conducting element, and the disk are stacked in layers;

[0008] The heat-conducting component has a heat-conducting groove in the area corresponding to the hot end. The heat-conducting groove extends through the heat-conducting component along its thickness direction. The heat-insulating component is disposed in the heat-conducting groove.

[0009] The heating plate assembly also includes an auxiliary heat-conducting component that is separately disposed from the heat-conducting component. The auxiliary heat-conducting component is disposed in the groove of the heat-conducting component and is stacked with the heat insulation component. In the thickness direction of the heating plate assembly, the heat insulation component and the auxiliary heat-conducting component are located between the hot end and the plate body.

[0010] The thermal conductivity of both the heat-conducting component and the auxiliary heat-conducting component is greater than that of the heat-insulating component.

[0011] The heat from the hot end is transferred to the plate body through the heat insulation component and the auxiliary heat-conducting component, and the heat from the cold end is transferred to the plate body through the heat-conducting component.

[0012] The heating plate assembly provided in this application comprises a heating element, a heat-conducting element, and a plate body stacked together. Heat from the cold end is directly transferred to the plate body via the heat-conducting element. A through-hole heat-conducting groove is provided in the area of ​​the heat-conducting element corresponding to the hot end. A heat insulation element and an auxiliary heat-conducting element are disposed in the heat-conducting groove, so that heat from the hot end is transferred to the plate body via the heat insulation element and the auxiliary heat-conducting element. Although the heat at the hot end is greater than the heat at the cold end, because the thermal conductivity of the heat insulation element is less than that of the heat-conducting element, part of the heat transfer at the hot end is blocked and slowed down by the heat insulation element. At the same time, an auxiliary heat-conducting element with a thermal conductivity greater than that of the heat insulation element is provided to transfer the heat at the hot end, thereby reducing heat loss at the hot end and preventing the heat at the hot end from being too concentrated on the plate body while ensuring heat transfer efficiency. This makes the surface of the heating plate assembly in contact with the food relatively evenly heated, which helps to reduce or avoid scorching, resulting in good heating effect. Furthermore, the heating power of the heating plate assembly does not need to be reduced, and the cooking time is relatively short.

[0013] Optionally, the thermal conductivity of the auxiliary heat-conducting component is the same as that of the main heat-conducting component. A smaller difference in heat transfer between the auxiliary heat-conducting component and the main heat-conducting component results in more even heating of the disk body, preventing thermal marks from forming in the area corresponding to the hot end of the disk body.

[0014] Optionally, the auxiliary heat-conducting component is made of the same material as the heat-conducting component. This allows both the heat-conducting component and the auxiliary heat-conducting component to be manufactured from the same piece of material, reducing material costs. Furthermore, the identical material ensures that the heat transfer difference is minimized, resulting in more even heating of the plate and preventing thermal marks from forming in the area corresponding to the hot end of the plate.

[0015] Optionally, the heat insulation component is disposed on the side near the hot end, and the auxiliary heat-conducting component is located between the heat insulation component and the disk body; the auxiliary heat-conducting component is in contact with the disk body and is flush with the surface of the heat-conducting component facing the disk body. This not only facilitates the assembly of the auxiliary heat-conducting component, but also ensures that the heat from the hot end is first blocked or slowed down by the heat insulation component before being transferred to the auxiliary heat-conducting component. The auxiliary heat-conducting component can evenly distribute the heat transferred from the heat insulation component, which is beneficial for the balanced heating of the disk body.

[0016] Optionally, the heat insulation component is in contact with the hot end and is flush with the surface of the heat-conducting component facing the heating element. This arrangement allows heat from both the hot and cold ends to be directly transferred to the heat-conducting and heat insulation components, reducing heat loss. Furthermore, some heat transfer from the hot end is first blocked or slowed down by the heat insulation component, and then transferred to the auxiliary heat-conducting component with higher thermal conductivity to continue the transfer, ensuring heat transfer efficiency. Simultaneously, the small difference in heat transfer between the auxiliary heat-conducting component and the heat-conducting component ensures uniform heating of the plate.

[0017] Optionally, the sum of the thicknesses of the insulation component and the auxiliary heat-conducting component is equal to the thickness of the heat-conducting component. This configuration ensures that the heat transfer paths from the cold end and the hot end to the plate are the same, while the insulation component and the auxiliary heat-conducting component fit tightly together and are neatly assembled with the heat-conducting component, resulting in high heat transfer efficiency and ease of processing and manufacturing.

[0018] Optionally, the plate body includes a contact surface for contacting food. The heating element is located on the side of the plate body opposite to the contact surface. The heat-conducting element is located between the heating element and the plate body. The heat insulation element is located on the side near the hot end. The auxiliary heat-conducting element is located between the heat insulation element and the plate body. The plate body, the heat-conducting element, the heating element, the auxiliary heat-conducting element, and the heat insulation element are all metal components, and all five are welded together. Because the heat insulation element has poor thermal conductivity, if the heat insulation element is placed between the plate body and the auxiliary heat-conducting element for welding, the welding temperature will be too high, which will pose a risk of the heat-conducting element and the auxiliary heat-conducting element melting through, resulting in a poor manufacturing yield. With this arrangement, the plate body and the heat insulation element are separated, which can improve the product qualification rate. Furthermore, by using the heat-conducting element and the auxiliary heat-conducting element to contact the plate body, the heat difference between the heat-conducting element and the auxiliary heat-conducting element is small, and the plate body is heated more evenly.

[0019] Optionally, the plate body is made of food-grade stainless steel, the heat insulation component is made of iron or stainless steel sheet, and the heat-conducting component and the auxiliary heat-conducting component are made of aluminum or copper. These materials are readily available and relatively inexpensive.

[0020] Optionally, the thickness of the heat insulation component is D1, and the thickness of the heat-conducting component is D2, where D2 / 8 ≤ D1 ≤ D2. This allows the heat insulation component to be housed within the groove of the heat-conducting component, preventing scorching without increasing the size of the heating plate assembly.

[0021] Optionally, the heat insulation component is a solid part, and / or the thickness of the heat insulation component is D, where 1mm ≤ D ≤ 3mm. A solid part ensures a uniform heat transfer rate and reduces the likelihood of melting. Since 1mm ≤ D ≤ 3mm, the heat insulation component is neither too thick to fail to transfer heat to the plate, nor too thin to transfer heat to the plate too quickly, thus helping to reduce or avoid scorching.

[0022] Optionally, the heat insulation component includes an open slot, the internal space of which forms a heat transfer cavity. By providing the heat transfer cavity, the air inside the cavity allows the heat transfer of the insulation plate to be relatively slower. Heat is transferred through the heat transfer cavity, further preventing excessive heat concentration at the hot end, and ultimately helping to reduce or avoid scorching.

[0023] Optionally, the groove in the heat-conducting element is a notch provided on the edge of the heat-conducting element. As described above, this arrangement facilitates the manufacture of the heat-conducting element while helping to reduce or avoid smearing.

[0024] Optionally, the heat-conducting groove, the auxiliary heat-conducting component, the heat insulation component, and the hot end are all arc-shaped. As described above, an arc shape is longer than a straight line, and an arc-shaped hot end has a larger heating area. The arc-shaped heat insulation component, auxiliary heat-conducting component, and heat-conducting groove not only increase the circumferential heat conduction length, but also allow the heat insulation component to cover more of the length of the hot end, thereby effectively blocking and slowing down heat transfer at the hot end, which is beneficial for the uniform heating of the surface of the heating plate assembly in contact with the food.

[0025] Optionally, the heat insulation element is arc-shaped, with a corresponding central angle β, where 30°≤β≤270°. This setting provides an appropriate range for the angle β, which determines the circumferential length of the heat insulation element and the length of the heat insulation element that can cover the hot end. This controls the heat ultimately transferred to the plate, promoting uniform heating of the surface of the heating plate assembly in contact with the food.

[0026] Optionally, the central angle corresponding to the groove of the heat-conducting component is greater than or equal to the central angle corresponding to the hot end, and the difference between the two is 'a', where 0 degrees ≤ a ≤ 10 degrees. As described above, since 0 degrees ≤ a ≤ 10 degrees, the length of the hot end and the length of the groove of the heat-conducting component are not significantly different. The heat from the hot end can be transferred to the plate body through the groove of the heat-conducting component and the heat insulation element within it. This ensures more uniform heating of the surface of the heating plate assembly in contact with the food, helping to reduce or avoid scorching.

[0027] Optionally, the plate body includes a contact surface for contacting food, and the contact surface has multiple protrusions. These protrusions can, on the one hand, thicken the plate body, improving the prevention of food sticking to the bottom; on the other hand, the protrusions can separate the food from the contact surface, reducing the contact area between the food and the contact surface, making it easier to clean.

[0028] A cooking appliance includes a container, a controller, and a heating plate assembly as described in any one of the above-mentioned components, the heating plate assembly and the container forming a food processing cavity; the controller controls the heating element to heat the food within the food processing cavity. This cooking appliance provides even heating and reduces the likelihood of food burning.

[0029] Optionally, the cooking appliance also includes a stirring blade, which is rotatably disposed within the food processing chamber to stir the food within the chamber. This cooking appliance also has a stirring function, making it suitable for various applications such as preparing slurries and rice pastes. Attached Figure Description

[0030] Figure 1This is a cross-sectional view of the mixing cup assembly of the cooking appliance of this application;

[0031] Figure 2 This is an exploded view of the first heating plate assembly of this application;

[0032] Figure 3 yes Figure 2 The heating plate assembly shown is a cross-sectional view in its assembled state;

[0033] Figure 4 This is an exploded view of the second type of heating plate assembly in this application;

[0034] Figure 5 yes Figure 4 The heating plate assembly shown is a cross-sectional view in its assembled state;

[0035] Figure 6 This is an exploded view of yet another embodiment of the heating plate assembly;

[0036] Figure 7 yes Figure 6 A cross-sectional view of the heating plate assembly shown in the image;

[0037] Figure 8 This is a top view of the heating element assembly.

[0038] Figure 9 This is a bottom view of the heating plate assembly in related technologies. Detailed Implementation

[0039] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0040] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0041] See Figure 9The inventors of this application, in analyzing the cause of the scorching phenomenon in the heating plate assembly, discovered that the heating element 3 includes a cold end 31 and a hot end 32. The cold end 31 is the part of the heating element 3 near the terminal 3101. The hot end 32 is connected to the cold end 31 and is the part away from the terminal 3101. The cold end 31 generates less heat and forms a cold area on the plate body 1. The hot end 32 generates more heat and forms a hot area on the plate body 1. Figure 6 In the diagram, the heating element 3 is arc-shaped, with the dotted line as the dividing line. The cold end 31 and the cold zone are both located below the dotted line. The hot end 32 and the hot zone are both located above the dotted line.

[0042] During cooking, the temperature of the hot zone is higher than that of the cold zone, resulting in uneven heating of the plate 1 and causing the food on the plate 1 to burn (known in the industry as burnt bottom). To solve the above problem, this application provides an improved cooking utensil.

[0043] refer to Figure 1 The cooking appliance includes a heating plate assembly 10, a container 20, and a controller (not shown). The heating plate assembly 10 and the container 20 form a food processing cavity 201. The controller controls the heating plate assembly 10 to heat the food inside the food processing cavity 201. The cooking appliance can be a food processor, a health pot, etc., but is not limited to these.

[0044] exist Figure 1 In the illustrated embodiment, the cooking appliance also includes a mixing blade 30, which is rotatably disposed within the food processing chamber 201 for mixing the ingredients within the food processing chamber 201. Thus, the cooking appliance also has a mixing function, making it suitable for various applications such as making slurries, rice pastes, etc. For example, it could be a blender, soy milk maker, or other food processor with heating and mixing functions.

[0045] refer to Figure 2 and Figure 3 The heating plate assembly 10 includes a plate body 1, a heat-conducting component 2, a heating component 3, a heat-insulating component 4, and an auxiliary heat-conducting component 5. The heating component 3, the heat-conducting component 2, and the plate body 1 are stacked. The plate body 1 is used for contact with food. The heating component 3 is located on the back of the plate body 1 and generates heat when energized. The heating component 3 includes a cold end 31 and a hot end 32, with the heat from the hot end being greater than that from the cold end 31. The heat-conducting component 2 is disposed between the plate body 1 and the heating component 3. The heat-conducting component 2 can be made of a material with high thermal conductivity, including but not limited to aluminum and copper.

[0046] The heat-conducting component 2 is provided with a heat-conducting groove 21 in the area corresponding to the hot end 32. The heat-conducting groove 21 extends through the heat-conducting component 2 along the thickness direction of the heat-conducting component 2. The heat insulation component 4 is provided in the heat-conducting groove 21.

[0047] The auxiliary heat-conducting component 5 is separately disposed from the heat-conducting component 2. The auxiliary heat-conducting component 5 is disposed in the groove 21 of the heat-conducting component and is stacked with the heat insulation component 4. In the thickness direction of the heating plate assembly 10, the heat insulation component 4 and the auxiliary heat-conducting component 5 are located between the hot end 32 and the plate body 1. The thermal conductivity of both the heat-conducting component 2 and the auxiliary heat-conducting component 5 is greater than that of the heat insulation component 4. The heat from the hot end 32 is transferred to the plate body through the heat insulation component 4 and the auxiliary heat-conducting component 5, and the heat from the cold end 32 is transferred to the plate body 1 through the heat-conducting component 2.

[0048] exist Figure 2 and Figure 3 In the illustrated embodiment, in the thickness direction of the heating plate assembly 10, the heat insulation member 4 is disposed on the side near the hot end 32 of the heating element 3, and the auxiliary heat-conducting member 5 is located between the heat insulation member 4 and the plate body 1, that is, along the direction from the plate body 1 to the heating element 3, the auxiliary heat-conducting member 5 and the heat insulation member 4 are stacked sequentially. In other embodiments, the auxiliary heat-conducting member 5 may be disposed on the side near the hot end 32, and the heat insulation member 4 may be located between the auxiliary heat-conducting member 5 and the plate body 1.

[0049] As described above, although the heat at the hot end 32 is greater than that at the cold end 31, the heat transfer efficiency of the insulation component 4 is lower than that of the heat transfer component 2. Therefore, the heat at the cold end is directly transferred to the plate body 1 by the heat transfer component 2. A portion of the heat transfer at the hot end 32 is blocked and slowed down by the insulation component 4, and then transferred to the plate body 1 through the auxiliary heat transfer component 5 with a relatively high thermal conductivity. This avoids the heat at the hot end 32 from being too concentrated on the plate body 1, and at the same time makes the surface of the heating plate assembly 10 in contact with the food relatively evenly heated, which helps to reduce or avoid the phenomenon of burning the bottom. By setting the auxiliary heat transfer component 5 with a relatively high thermal conductivity, the heat loss at the hot end 32 can be reduced and the heat transfer efficiency can be guaranteed. The heating effect is good, and the heating power of the heating plate assembly 10 does not need to be reduced, and the cooking time is relatively short.

[0050] The heat-conducting groove 2 is through and the auxiliary heat-conducting component 5 is set separately from the heat-conducting component 2. Compared with the solution of directly machining a blind groove on the heat-conducting component 2 as a heat-conducting groove to accommodate the heat insulation component 4 (in this solution, the overlapping part of the heat-conducting component 2 and the heat insulation component 4 realizes the function of the auxiliary heat-conducting component 5), the processing and manufacturing is easier, the yield is higher, and it is beneficial to improve production efficiency.

[0051] In one embodiment, the thermal conductivity of the auxiliary heat-conducting element 5 is the same as that of the heat-conducting element 2. This configuration results in a smaller difference in heat transfer between the auxiliary heat-conducting element 5 and the heat-conducting element 2, leading to more even heating of the disk 1 and preventing thermal marks from forming in the area corresponding to the hot end 32 of the disk 1.

[0052] In one embodiment, the auxiliary heat-conducting component 5 is made of the same material as the heat-conducting component 2. For example, both the auxiliary heat-conducting component 5 and the heat-conducting component 2 are made of aluminum. This allows the heat-conducting component 2 and the auxiliary heat-conducting component 5 to be manufactured from the same piece of material, reducing material costs. Manufacturing methods include, but are not limited to, cold stamping. Furthermore, the identical material ensures minimal heat transfer difference, resulting in more even heating of the disk 1 and preventing thermal marks from forming in the area corresponding to the hot end 32 on the disk 1.

[0053] exist Figure 3 In the illustrated embodiment, in the thickness direction of the heating plate assembly 10, the heat insulation member 4 is disposed near the hot end 32 of the heating element 3. The heat insulation member 4 is in contact with the hot end 32 and is flush with the surface of the heat conductor 2 facing the heating element 3. This arrangement allows the heat from both the hot end 32 and the cold end 32 to be directly transferred to the heat conductor 2 and the heat insulation member 4, reducing heat loss. Furthermore, some of the heat transfer from the hot end 32 is first blocked or slowed down by the heat insulation member 4, and then transferred to the auxiliary heat conductor 5, which has a higher thermal conductivity, to continue the transfer, ensuring heat transfer efficiency. Simultaneously, the small difference in heat transfer between the auxiliary heat conductor 5 and the heat conductor 2 ensures uniform heating of the plate 1.

[0054] exist Figure 3 In the illustrated embodiment, the auxiliary heat-conducting component 5 is located between the heat insulation component 4 and the disk body 1. The auxiliary heat-conducting component 5 is in contact with the disk body 1 and is flush with the surface of the heat-conducting component 2 facing the disk body 1. This not only facilitates the assembly of the auxiliary heat-conducting component 5 but also promotes even heating of the disk body 1.

[0055] In one embodiment, the plate body 1 includes a contact surface 12 for contacting food. The heating element 3 is disposed on the side of the plate body 1 facing away from the contact surface 12. The heat-conducting element 2 is disposed between the plate body 1 and the heating element 3. In the thickness direction of the heating plate assembly 10, the heat insulation element 4 is disposed on the side close to the hot end 32 of the heating element 3. The auxiliary heat-conducting element 5 is located between the heat insulation element 4 and the plate body 1, that is, the heat insulation element 4 is closer to the hot end 32 than the auxiliary heat-conducting element 5. The plate body 1, the heat-conducting element 2, the heating element 3, the auxiliary heat-conducting element 5, and the heat insulation element 4 are all metal components, and the five are welded together. Because the thermal conductivity of the heat insulation component 4 is poor, welding the heat insulation component 4 between the plate body 1 and the auxiliary heat-conducting component 5 would result in excessively high welding temperatures, posing a risk of melting through the heat-conducting component 2 and the auxiliary heat-conducting component 5, leading to a poor manufacturing yield. In other words, welding the plate body 1 to the heat-conducting component 2 and the auxiliary heat-conducting component 5, and welding the heat insulation component 4 to the heat-conducting component 2 and the auxiliary heat-conducting component 5, while keeping the plate body 1 separate from the heat insulation component 4, avoids the risk of melting through the heat-conducting component 2 and the auxiliary heat-conducting component 5 caused by direct welding between the plate body 1 and the heat insulation component 4, thus improving the product qualification rate. Furthermore, by utilizing the contact between the heat-conducting component 2 and the auxiliary heat-conducting component 5 and the plate body 1, the heat difference between the heat-conducting component 2 and the auxiliary heat-conducting component 5 is small, resulting in more even heating of the plate body 1. It should be noted that the various metal components in the heating plate assembly 10 can be fixed by lead soldering, but are not limited to this method.

[0056] In an alternative embodiment, the plate body 1 is made of food-grade stainless steel, the heat insulation element 4 is made of iron or stainless steel, and the heat-conducting element 2 and the auxiliary heat-conducting element 5 are made of aluminum or copper. These materials are readily available and relatively inexpensive.

[0057] Optionally, the sum of the thicknesses of the heat insulation component 4 and the auxiliary heat-conducting component 5 is equal to the thickness of the heat-conducting component 2. This configuration ensures that the heat transfer paths from the cold end 31 and the hot end 32 to the plate 1 are the same. Simultaneously, the heat insulation component 4 and the auxiliary heat-conducting component 5 are tightly fitted and neatly assembled with the heat-conducting component 2, without increasing the thickness of the heating plate. This results in high heat transfer efficiency and ease of manufacturing. For example, the heat-conducting component 2 is a 3mm thick aluminum plate, the heat insulation component 4 can be a 1.5mm thick stainless steel plate, and the auxiliary heat-conducting component 5 can be a 1.5mm thick aluminum plate; that is, the heat insulation component 4 and the auxiliary heat-conducting component 5 are the same, but not limited to this.

[0058] Taking a stainless steel disc 1, a stainless steel heat insulation component 4, and aluminum plates for the heat-conducting component 2 and auxiliary heat-conducting component 5 as an example, the heat conductivity of the disc 1 and the heat insulation component 4 is different, and their melting points are higher than those of the heat-conducting component 2 and the auxiliary heat-conducting component 5. If the heat insulation component 4 is placed between the disc 1 and the auxiliary heat-conducting component 5 for welding, i.e., the disc 1 and the heat insulation component 4 are in direct contact, the temperature will be too high during the welding process, and the heat-conducting component 2 and the auxiliary heat-conducting component 5 may be melted through, resulting in a poor product yield. However, by placing the auxiliary heat-conducting component 5 between the disc 1 and the heat insulation component 4, the disc 1 and the heat insulation component 4 are separated and do not contact each other. The disc 1 is welded to the heat-conducting component 2 and the auxiliary heat-conducting component 5, and the heat insulation component 4 is welded to the heat-conducting component 2 and the auxiliary heat-conducting component 5, which can effectively improve the product qualification rate. The heat insulation component 4 can be made into a solid component. A solid component can make the heat transfer rate of the heat insulation component faster and less prone to melting.

[0059] In another embodiment, the heat insulation member 4 can be a hollow shell-shaped structure. For example, the heat insulation member 4 can be configured as a shell-shaped structure as described in the following embodiments. The heat insulation member 4 is provided with an opening slot 41, and the internal space of the opening slot 41 can be closed by the hot end 32 or the auxiliary heat-conducting member 5 to form a heat transfer cavity 11. Alternatively, the heat insulation member 4 can be a shell-shaped component, or it can be a structure that is hollow inside and closed outside.

[0060] The shape and thickness dimension D1 of the heat insulation component 4 are not limited. Figure 2 In the illustrated embodiment, the heat insulation element 4 has an arc-shaped sheet structure, and the central angle corresponding to the heat insulation element 4 is β, where 30°≤β≤270°. For example, the angle β can be 30°, 50°, 80°, 100°, 150°, 180°, 200°, 230°, 250°, or 270°. By selecting and setting the central angle of the heat insulation element 4, different circumferential lengths of the heat insulation element 4 can be obtained, which can make the plate 1 heat up more evenly and avoid the occurrence of scorching.

[0061] exist Figure 2 In the illustrated embodiment, a central hole 22 is provided at the center of the heat-conducting component 2, and a heat-insulating component 4 is arranged around the periphery of the central hole 22. It can be seen that the two ends of the heat-insulating component 4 are spaced at a preset angle β around the central hole 22, where 30°≤β≤270°. For example, the angle β can be 30°, 50°, 80°, 100°, 150°, 180°, 200°, 230°, 250°, or 270°, but is not limited to these.

[0062] The thickness D1 of the heat insulation component 4 can be selected. In one embodiment, 1mm ≤ D1 ≤ 3mm. For example, it can be 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.5mm, 2.7mm, or 3mm, but is not limited to these. In this way, the heat insulation component 4 will not be too thick and unable to transfer heat to the plate body 1, nor will it be too thin and transfer heat to the plate body 1 too quickly, thereby helping to reduce or avoid the phenomenon of scorching at the bottom.

[0063] In one embodiment, the thickness of the heat-conducting element 2 is D2, where D2 / 8 ≤ D1 ≤ D2. This allows the heat insulation element 4 to be housed within the heat-conducting element groove 21, preventing scorching without increasing the size of the heating plate assembly 10.

[0064] In one embodiment, the heat-conducting groove 21 is a notch provided on the edge of the heat-conducting element 2. As described above, this arrangement facilitates the manufacture of the heat-conducting element 2 while reducing or avoiding smearing. Of course, in other embodiments, the heat-conducting groove 21 may be a closed groove provided within the heat-conducting element 2.

[0065] In one embodiment, the shape and size of the auxiliary heat-conducting component 5 can be set with reference to the heat insulation component 4, so that the auxiliary heat-conducting component 5 and the heat insulation component 4 can be stacked in a neat appearance, making it easier to assemble with the heat-conducting component groove 21, but it is not limited to this.

[0066] Figures 4 to 5 The second type of heating plate assembly 10 was disclosed. Figure 6 and Figure 7 A third type of heating plate assembly 10 is disclosed. Both types of heating plate assemblies 10 include a plate body 1, a heat-conducting element 2, a heating element 3, and a heat-insulating element 4. The plate body 1 can directly contact food; in this case, the material of the plate body 1 is, for example, food-grade stainless steel. Other layers can be provided on the plate body 1 to allow contact with food through these other layers. The heating element 3 includes a cold end 31 and a hot end 32. The heating element 3 can be a heating tube, etc., with no structural limitations, as long as it has the cold end 31 and the hot end 32. The structures of the cold end 31 and the hot end 32 are not limited, but the heat output of the hot end 32 is greater than that of the cold end 31. For example, the heating element 3 includes a heating wire, with the heat concentrated in the middle of the heating wire than at both ends. Therefore, the portion of the heating element 3 corresponding to the middle of the heating wire forms the hot end 32, and the portions corresponding to both ends of the heating wire form the cold end 31. It should be noted that the cold end 31 is only relatively cooler than the hot end 32; the cold end 31 can also generate heat.

[0067] The heating element 3, the heat-conducting element 2, and the plate body 1 are stacked. Regarding this stacking arrangement, on one hand, the heat-conducting element 2 can be located between the plate body 1 and the heating element 3; on the other hand, the plate body 1 can be located between the heat-conducting element 2 and the heating element 3. In this case, both the heat-conducting element 2 and the heat insulation element 4 need to be made of food-grade materials. On the other hand, there can also be other layers between adjacent stacked layers. Regardless of the stacking arrangement, the heat-conducting element 2 has a heat-conducting groove 21 corresponding to the area of ​​the hot end 32. The heat insulation element 4 is located in the heat-conducting groove 21. Therefore, based on the cooperation relationship between the heat-conducting groove 21 and the heat insulation element 4, the structure of the heat-conducting groove 21 and whether it penetrates the heat-conducting element 2 are not limited. The thermal conductivity of the heat insulation element 4 is less than that of the heat-conducting element 2. The heat from the cold end 31 is transferred to the plate body 1 through the heat-conducting element 2. The heat from the hot end 32 is transferred to the plate body 1 through the heat insulation element 4. The depth direction of the heat-conducting groove 21 is consistent with the thickness direction of the heat-conducting component 2. The heat-conducting groove 21 can be a through groove extending through the heat-conducting component 2 along its thickness direction. Alternatively, it can be configured as a blind groove with a depth dimension smaller than the thickness dimension of the heat-conducting component 2.

[0068] As described above, since the heat insulation element 4 is located within the heat-conducting element groove 21 and between the hot end 32 and the plate body 1, the heat from the hot end 32 is transferred to the plate body 1 via the heat insulation element 4. Furthermore, since the heating element 3, the heat-conducting element 2, and the plate body 1 are stacked, the heat from the cold end 31 is transferred to the plate body 1 via the heat-conducting element 2 (in some embodiments, the heat from the hot end 32 can also be transferred to the heat insulation element 4 via the plate body 1, and the heat from the cold end 31 can be transferred to the heat-conducting element 2 via the plate body 1; the surfaces of the heat-conducting element 2 and the heat insulation element 4 serve as surfaces in contact with food). Therefore, during the heat transfer process described above, although the heat from the hot end 32... The heat output of the hot end 32 is greater than that of the cold end 31. However, the thermal conductivity of the insulation component 4 is lower than that of the heat conductor 2. Therefore, the heat from the hot end 32 is blocked and slowed down during upward transfer by the insulation component 4. Specifically, due to the low thermal conductivity of the insulation component 4, the heat from the hot end can be transferred laterally on the insulation component 4 before being transferred upwards. This prevents the heat from the hot end 32 from being too concentrated on the surface of the heating plate assembly 10 that contacts the food (in this embodiment, the plate body 1; in other embodiments, it can be the surface composed of the heat conductor 2 and the insulation component 4), ensuring even heating and reducing or preventing scorching. Because this reduces or prevents scorching, the heating power of the heating plate assembly 10 does not need to be reduced, resulting in a relatively shorter cooking time.

[0069] See Figures 4 to 7 The cold end 31 of the heating element 3, the heat-conducting element 2, and the disk body 1 are stacked in sequence. The hot end 32, the heat-insulating element 4, and the disk body 1 are stacked in sequence.

[0070] As described above, through the stacked arrangement, the heat from the cold end 31 is transferred to the plate body 1 through the heat-conducting component 2, and the heat from the hot end 32 is transferred to the plate body 1 through the heat insulation component 4. In this way, the path along the thickness direction of the heating plate assembly is shorter during the heat transfer process, thereby reducing or avoiding the phenomenon of burning at the bottom and the heat transfer is faster.

[0071] See Figure 5 and Figure 7 The heat-conducting groove 21 penetrates the heat-conducting element 2 along its thickness direction. The surface of the heat-insulating element 4 that contacts the plate body 1 is flush with the surface of the heat-conducting element 2 that contacts the plate body 1. This flush arrangement not only facilitates the assembly of the heat-conducting element 2 and the heat-insulating element 4, but also promotes the heat transfer from the heat-conducting element 2 and the heat-insulating element 4 to the plate body 1. As shown in the figure, the surface of the plate body 1 that contacts the food is flat, which facilitates cleaning.

[0072] See Figures 4 to 7 The heat-conducting groove 21 extends through the heat-conducting element 2 along its thickness direction, and the heat-insulating element 4 contacts both the disk body 1 and the hot end 32. Of course, for either the heat-insulating element 4 and the disk body 1 forming a heat transfer cavity 11, or the hot end 32 forming a heat transfer cavity 11, the contact between the heat-insulating element 4 and the disk body 1 and the hot end 32 means that one side of the heat-insulating element 4 contacts one of the hot end 32 and the disk body 1, and the opening contacts the other of the hot end 32 and the disk body 1.

[0073] As described above, by setting a through heat-conducting groove 21, the heat insulation groove 21 can play a role in positioning the heat insulation component, which facilitates the assembly of the heat insulation component 4, the disk body 1 and the heat-conducting component 2. The heat insulation component 4 contacts the disk body 1 and the hot end 32 respectively, and the heat transfer path is shorter, which is conducive to faster heat transfer.

[0074] In one embodiment, the heat-conducting groove 21 extends through the heat-conducting element 2 along its thickness direction, and the thickness of the heat-insulating element 4 is less than the thickness of the heat-conducting element 4. This means that a gap is left on one side of the heat-insulating element 4 along its thickness direction, preventing the heat-insulating element 4 from contacting other parts on that side and forming an air heat transfer layer. This further increases thermal resistance and reduces heat transfer.

[0075] See Figures 4 to 7 The heat-conducting groove 21 is a notch provided at the edge of the heat-conducting element 2. In other embodiments, the heat-conducting groove 21 may not be a notch, but rather formed between the edge and the center of the heat-conducting element 2. As described above, since the heat-conducting groove 21 is a notch provided at the edge of the heat-conducting element 2, it is convenient to manufacture the heat-conducting element 2 while helping to reduce or avoid smearing.

[0076] See Figure 4 and Figure 6 The heat-conducting groove 21, the heat insulation component 4, and the hot end 32 are all arc-shaped. As described above, the arc shape is longer than a straight line, and the arc-shaped hot end 32 has a larger heating area. The arc-shaped heat insulation component 4 and the heat-conducting groove 21 not only increase the circumferential heat conduction length, but also allow the heat insulation component 4 to cover more of the length of the hot end 32. This effectively blocks and slows down the heat transfer of the hot end 32, making it easier for the heat from the hot end 32 to be transferred to the plate body 1 more slowly through the heat insulation component 4. Ultimately, this helps to ensure that the surface of the heating plate assembly in contact with the food is heated evenly, which helps to reduce or avoid scorching.

[0077] In some embodiments, the heat insulation element fills the groove of the heat-conducting element. As described above, filling the groove of the heat-conducting element makes it easier to assemble the heat insulation element, and the heat insulation element is less likely to loosen, thus transferring heat better.

[0078] When the heat-conducting groove 21, the heat insulation element 4, and the hot end 32 are all arc-shaped, the central angle corresponding to the heat-conducting groove 21 is greater than or equal to the central angle corresponding to the hot end 32, and the difference between the two is 'a', where 0 degrees ≤ a ≤ 10 degrees. For example, 0 degrees, 0.5 degrees, 1 degree, 1.3 degrees, 1.6 degrees, 2 degrees, 2.3 degrees, 2.5 degrees, 2.8 degrees, 3 degrees, 3.3 degrees, 3.8 degrees, 4 degrees, 4.3 degrees, 4.6 degrees, 4.8 degrees, 5 degrees, 5.2 degrees, 5.5 degrees, 5.7 degrees, 6 degrees, 6.2 degrees, 6.5 degrees, 6.8 degrees, 7 degrees, 7.3 degrees, 7.5 degrees, 7.8 degrees, 8 degrees, 8.2 degrees, 8.5 degrees, 8.8 degrees, 9 degrees, 9.2 degrees, 9.5 degrees, 9.8 degrees, or 10 degrees. As described above, since 0 degrees ≤ a ≤ 10 degrees, the length of the hot end 32 and the length of the heat-conducting groove 21 are not much different. The heat from the hot end 32 can be transferred to the plate body 1 through the heat-conducting groove 21 and the heat insulation 4 in the heat-conducting groove 21, which can make the surface of the heating plate assembly in contact with the food evenly heated, which helps to reduce or avoid the phenomenon of burning the bottom.

[0079] In some embodiments, the central angle of the heat-conducting groove 21 is between 60 degrees and 180 degrees, for example, 60 degrees, 65 degrees, 68 degrees, 70 degrees, 73 degrees, 75 degrees, 80 degrees, 83 degrees, 88 degrees, 90 degrees, 92 degrees, 95 degrees, 98 degrees, 100 degrees, 102 degrees, 105 degrees, 108 degrees, 110 degrees, 113 degrees, 115 degrees, 117 degrees, 120 degrees, 125 degrees, 128 degrees, 130 degrees, 133 degrees, 136 degrees, 140 degrees, 143 degrees, 145 degrees, 148 degrees, 150 degrees, 155 degrees, 158 degrees, 160 degrees, 162 degrees, 165 degrees, 168 degrees, 170 degrees, 172 degrees, 175 degrees, 178 degrees, or 180 degrees.

[0080] See Figure 4 and Figure 5 The heat insulation component 4 is a solid part. As described above, since the heat insulation component 4 is a solid part, the heat transfer rate of the heat insulation component is faster and it is not easy to melt.

[0081] See Figures 4 to 5 The heat-conducting groove 21 extends through the heat-conducting element 2. The thickness of the heat-insulating element 4 is D, where 1mm ≤ D ≤ 3mm, for example, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.5mm, 2.7mm, or 3mm. As described above, since 1mm ≤ D ≤ 3mm, the heat-insulating element 4 will not be too thick to fail to transfer heat to the plate, nor will it be too thin to transfer heat to the plate too quickly. This helps to reduce or avoid scorching at the bottom.

[0082] See Figure 6 and Figure 7 The heat insulation component 4 includes an opening groove 41, the internal space of which forms a heat transfer cavity 11. The opening groove 41 is covered by the disc body 1, thus forming the heat transfer cavity 11. In other embodiments, the opening groove 41 is covered by the hot end 32, forming the heat transfer cavity 11. As described above, by providing the heat transfer cavity 11, the air inside the heat transfer cavity allows for relatively slow heat transfer, with heat being transferred to the heat transfer cavity first, avoiding excessive heat concentration at the hot end. Ultimately, this helps to reduce or prevent scorching.

[0083] See Figure 7 Along the thickness direction of the heating plate assembly, the height of the heat transfer cavity 11 is h, where 1mm ≤ h ≤ 2mm. As described above, since 1mm ≤ h ≤ 2mm, it helps to reduce or avoid scorching. If h is too large, the heat travels a long distance within the heat transfer cavity, and the heat from the hot end of the heating element cannot be transferred out in time, potentially causing the hot end to melt. If h is too small, the heat is transferred out quickly, and the surface of the plate may experience inconsistent temperatures or significant temperature differences, potentially leading to scorching.

[0084] In some embodiments, the opening slot 41 includes a slot wall 411, the wall thickness of which is T, 0.2mm≤T≤1mm. As described above, since the wall thickness T of the slot wall 411 satisfies 0.2mm≤T≤1mm, the heat insulation component 4 is less prone to deformation and easier to process. This is because if the wall thickness is too thin, the heat insulation component is easily deformed, and if the slot wall is too thick, it is not convenient to process.

[0085] See Figure 8In one embodiment, the plate body 1 includes a contact surface 12 for contacting food, and the contact surface 12 has a plurality of protrusions 120. The plurality of protrusions 120 can, on the one hand, thicken the plate body 1 and improve the prevention of food sticking to the bottom; on the other hand, the protrusions 120 can separate the food from the contact surface 12, reducing the contact area between the food and the contact surface 12, making it easier to clean. The protrusions 120 can be circular, but are not limited to this.

[0086] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A heating plate assembly, characterized in that, The heating plate assembly includes a plate body (1), a heat-conducting component (2), a heating component (3), and a heat-insulating component (4), wherein: The heating element (3) includes a cold end (31) and a hot end (32); The heating element (3), the heat-conducting element (2), and the disk body (1) are stacked together; The heat-conducting component (2) is provided with a heat-conducting component groove (21) in the area corresponding to the hot end (32). The heat-conducting component groove (21) penetrates the heat-conducting component (2) along the thickness direction of the heat-conducting component (2). The heat insulation component (4) is provided in the heat-conducting component groove (21). The heating plate assembly (10) further includes an auxiliary heat-conducting component (5) separately disposed from the heat-conducting component (2). The auxiliary heat-conducting component (5) is disposed in the groove (21) of the heat-conducting component and is stacked with the heat insulation component (4). In the thickness direction of the heating plate assembly (10), the heat insulation component (4) and the auxiliary heat-conducting component (5) are located between the hot end (32) and the plate body (1). The thermal conductivity of the heat-conducting component (2) and the auxiliary heat-conducting component (5) is greater than that of the heat insulation component (4). The heat from the hot end (32) is transferred to the plate body (1) through the heat insulation component (4) and the auxiliary heat-conducting component (5), and the heat from the cold end (31) is transferred to the plate body (1) through the heat-conducting component (2).

2. The heating plate assembly according to claim 1, characterized in that, The thermal conductivity of the auxiliary heat-conducting component (5) is the same as that of the heat-conducting component (2).

3. The heating plate assembly according to claim 2, characterized in that, The auxiliary heat-conducting component (5) is made of the same material as the heat-conducting component (2).

4. The heating plate assembly according to claim 1, characterized in that, The heat insulation element (4) is located on the side close to the hot end (32), and the auxiliary heat-conducting element (5) is located between the heat insulation element (4) and the disk body (1); the auxiliary heat-conducting element (5) is in contact with the disk body (1) and is flush with the surface of the heat-conducting element (2) facing the disk body (1).

5. The heating plate assembly according to claim 1 or 4, characterized in that, The heat insulation element (4) is in contact with the hot end (32) and is flush with the surface of the heat-conducting element (2) facing the heat-generating element (3).

6. The heating plate assembly according to claim 5, characterized in that, The sum of the thicknesses of the heat insulation component (4) and the auxiliary heat-conducting component (5) is equal to the thickness of the heat-conducting component (2).

7. The heating plate assembly according to claim 1, characterized in that, The plate (1) includes a contact surface (12) for contacting food. The heating element (3) is located on the side of the plate (1) facing away from the contact surface (12). The heat-conducting element (2) is located between the plate (1) and the heating element (3). The heat insulation element (4) is located on the side close to the hot end (32). The auxiliary heat-conducting element (5) is located between the heat insulation element (4) and the plate (1). The plate (1), the heat-conducting element (2), the heating element (3), the auxiliary heat-conducting element (5) and the heat insulation element (4) are all metal components, and the five are welded together.

8. The heating plate assembly according to claim 1 or 7, characterized in that, The plate body (1) is made of food-grade stainless steel, the heat insulation component (4) is made of iron or stainless steel, and the heat-conducting component (2) and the auxiliary heat-conducting component (5) are made of aluminum or copper.

9. The heating plate assembly according to claim 1, characterized in that, The thickness of the heat insulation component (4) is D1, and the thickness of the heat conduction component (2) is D2, where D2 / 8 ≤ D1 ≤ D2.

10. The heating plate assembly according to claim 1, characterized in that, The heat insulation component (4) is a solid component, and / or the thickness of the heat insulation component (4) is D, 1mm≤D≤3mm.

11. The heating plate assembly according to claim 1, characterized in that, The heat insulation component (4) includes an open groove (41), the internal space of which forms a heat transfer cavity (11).

12. The heating plate assembly according to claim 1, characterized in that, The heat-conducting groove (21) is a notch provided on the edge of the heat-conducting element (2).

13. The heating plate assembly according to claim 1, characterized in that, The heat-conducting groove (21), the auxiliary heat-conducting component (5), the heat insulation component (4), and the hot end (32) are all arc-shaped.

14. The heating plate assembly according to claim 1, characterized in that, The heat insulation component (4) is arc-shaped, and the central angle of the heat insulation component (4) is β, 30°≤β≤270°.

15. The heating plate assembly according to claim 13, characterized in that, The central angle corresponding to the groove (21) of the heat-conducting component is greater than or equal to the central angle corresponding to the hot end (32), and the difference between the two is a, where 0 degrees ≤ a ≤ 10 degrees.

16. The heating plate assembly according to claim 1, characterized in that, The plate body (1) includes a contact surface (12) for contacting food ingredients, and the contact surface (12) is provided with a plurality of protrusions (120).

17. A cooking utensil, characterized in that, The cooking appliance includes a container (20), a controller, and a heating plate assembly (10) according to any one of claims 1 to 16, wherein the heating plate assembly (10) and the container form a food processing cavity (201); the controller controls the heating element (3) to heat up in order to heat the food in the food processing cavity (201).

18. The cooking utensil according to claim 17, characterized in that, The cooking appliance also includes a stirring blade (30), which is rotatably disposed in the food processing chamber (201) to stir the food in the food processing chamber (201).

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