Heating disc assembly and cooking utensil

Abstract

The utility model discloses a heating disc assembly and a cooking utensil. The heating disc assembly comprises a disc body, a heat conduction piece, a heating piece and a heat insulation piece. The heating piece comprises a cold end and a hot end. The heating piece, the heat conduction piece and the plate body are stacked. The heat conduction piece is provided with a heat conduction piece groove corresponding to the hot end area. The heat insulation piece is located in the heat conduction piece groove and located between the hot end and the disc body in the thickness direction of the heating disc assembly. The thermal conductivity of the heat insulation piece is smaller than that of the heat conduction piece. Heat of the hot end is transmitted to the disc body through the heat insulation piece. Heat of the cold end is transmitted to the disc body through the heat conduction piece. In the heat transfer process, although the heating value of the hot end is larger than that of the cold end, the heat conductivity of the heat insulation piece is smaller than that of the heat conduction piece, and therefore the surface, making contact with food, of the heating disc assembly (such as the surface of the disc body) is heated evenly, and the bottom pasting phenomenon can be reduced or avoided.

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. Utility Model Content

[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. The heating plate assembly includes a plate body, a heat-conducting element, a heating element, and a heat-insulating element. The heating element includes a cold end and a hot end. The heating element, the heat-conducting element, and the plate body are stacked. The heat-conducting element has a groove corresponding to the area of ​​the hot end. The heat-insulating element is located within the groove of the heat-conducting element and is positioned between the hot end and the plate body in the thickness direction of the heating plate assembly. The thermal conductivity of the heat-insulating element is less than that of the heat-conducting element; heat from the cold end is transferred to the plate body via the heat-conducting element, and heat from the hot end is transferred to the plate body via the heat-insulating element.

[0006] As described above, since the heat insulation component is located within the groove of the heat-conducting component and between the hot end and the plate body, the heat from the hot end is transferred to the plate body through the heat insulation component. Furthermore, since the heating element, heat-conducting component, and plate body are stacked, the heat from the cold end is transferred to the plate body through the heat-conducting component. Therefore, during this heat transfer process, although the heat output of the hot end is greater than that of the cold end, the thermal conductivity of the heat insulation component is lower than that of the heat-conducting component. Consequently, some of the heat transfer from the hot end is blocked and slowed down by the heat insulation component. This ensures that the surface of the heating plate assembly in contact with the food is heated evenly, which helps reduce or avoid scorching. Because this reduces or avoids scorching, there is no need to reduce the heating power of the heating plate assembly, resulting in a relatively shorter cooking time.

[0007] In some embodiments, the surfaces of the heat insulation element that are in contact with the disc body, and the surfaces of the heat-conducting element that are in contact with the disc body, are flush.

[0008] As described above, with the flush arrangement, the surface of the plate that contacts the food is flat, which makes it easier to clean.

[0009] In some embodiments, the heat-conducting groove extends through the heat-conducting element, and the heat-insulating element contacts the disk body and the hot end, respectively.

[0010] As described above, by setting a through-through heat-conducting groove, the heat insulation groove can play a role in positioning the heat insulation, which facilitates the assembly of the heat insulation, the plate and the heat-conducting component. The heat insulation contacts the plate and the hot end respectively, which is conducive to faster heat transfer.

[0011] In some embodiments, the heat-conducting groove is provided on the side surface of the heat-conducting element facing the hot end, and is configured as a blind groove with a depth dimension smaller than the thickness dimension of the heat-conducting element.

[0012] As described above, a portion of the heat transfer from the hot end will be blocked and slowed down by the heat insulation component before being transferred to the heat conduction component. This ensures that the heat from both the hot and cold ends is transferred to the plate by the heat conduction component. The heat conduction component can even out the heat, making the plate more evenly heated and preventing thermal marks from appearing in the area corresponding to the hot end of the plate.

[0013] In some embodiments, the heat insulation element is in contact with the hot end and is flush with the surface of the heat-conducting element facing the heat-generating element.

[0014] As described above, the heat from both the hot and cold ends can be directly transferred to the heat-conducting and heat-insulating components, reducing heat loss. Furthermore, some of the heat transfer from the hot end is first blocked or slowed down by the heat-insulating components before being transferred to the heat-conducting components for further transfer, ensuring heat transfer efficiency while making the plate uniformly heated.

[0015] In some embodiments, the heating plate assembly further includes a heat-uniforming element disposed between the heat-conducting element and the plate body. The side of the heat-uniforming element facing the heat-conducting element contacts both the heat-conducting element and the heat-insulating element, while the side facing the plate body contacts the plate body. With this arrangement, heat from the cold end is transferred to the plate body via the heat-conducting element and the heat-uniforming element, and heat from the hot end is transferred to the plate body via the heat-insulating element and the heat-uniforming element. The heat-uniforming element can even out the heat transferred from the heat-conducting element and the heat-insulating element, further improving the problem of thermal marks formed on the plate body due to differences in heat transfer.

[0016] In some embodiments, the surface of the heat-uniforming element facing the heat-conducting element is a flat plane throughout, and the surfaces of the heat-insulating element and the heat-uniforming element that are in contact with each other are flush. This facilitates the manufacturing of the heat-uniforming element and ensures efficient heat transfer.

[0017] In some embodiments, the heat-uniforming element has a heat-uniforming groove on its surface facing the heat-conducting element. The depth of the heat-uniforming groove is less than the thickness of the heat-uniforming element, and a portion of the heat-insulating element is located within the heat-uniforming groove. Therefore, without increasing the thickness of the heating plate, the thickness of the heat-insulating element can be appropriately increased, thereby improving the heat insulation performance.

[0018] In some embodiments, the heat-conducting groove is a blind groove located on the surface of the heat-conducting element facing the disk body, and its depth is smaller than the thickness of the heat-conducting element. Alternatively, the heat-conducting groove extends through the heat-conducting element, and the heat insulation element contacts both the heat-uniforming element and the hot end. Heat from the hot end passes through the heat insulation element and is then transferred to the disk body by the heat-uniforming element. The heat-uniforming element can even out the heat transferred from the heat insulation element and the heat-conducting element, further improving the problem of thermal marks formed on the disk body due to differences in heat transfer.

[0019] In some embodiments, the thermal conductivity of the heat-uniforming component is greater than that of the heat-insulating component, or the thermal conductivity of the heat-uniforming component is equal to that of the heat-conducting component. This results in a higher thermal conductivity and lower thermal resistance in the heat-uniforming component, leading to better heat distribution. It also evens out the heat transferred from the heat-insulating and heat-conducting components while preventing heat loss, ensuring the heating effect of the heating plate, and further mitigating the problem of thermal marks formed on the plate due to differences in heat transfer.

[0020] In some embodiments, the heat-conducting groove extends through the heat-conducting element, and the thickness of the heat-insulating element is less than the thickness of the heat-conducting element. The heat-insulating element defines an air heat-conducting layer within the heat-conducting groove. This allows some of the heat at the hot end to be blocked or slowed down by the heat-insulating plate and the air heat-conducting layer, further improving the problem of excessive heat concentration at the hot end, and ultimately helping to reduce or avoid scorching. In some embodiments, the heat-conducting groove is a notch located at the edge of the heat-conducting element.

[0021] As described above, the groove in the heat-conducting component is a notch located on the edge of the heat-conducting component, which facilitates manufacturing and processing while reducing or avoiding the phenomenon of sticking to the bottom.

[0022] In some embodiments, the heat-conducting groove, the heat insulation element, and the hot end are all arc-shaped.

[0023] As described above, the arc shape is longer than a straight line, which increases the circumferential heat conduction length. This makes it easier for the heat from the hot end to be transferred to the plate body more slowly through the heat insulation component. 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 the phenomenon of food burning.

[0024] In some embodiments, the thermal insulation element fills the groove of the thermally conductive element.

[0025] As described above, by filling the grooves of the heat-conducting component, it is easier to assemble the heat insulation component, etc., and the heat insulation component is not easy to loosen, which can better transfer heat.

[0026] In some embodiments, when the heat-conducting groove, the heat insulation element, and the hot end are all arc-shaped, the central angle corresponding to the heat-conducting groove 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.

[0027] As described above, since 0 degrees ≤ a ≤ 10 degrees, the length of the hot end and the length of the heat-conducting groove are not much different. The heat from the hot end can be transferred to the plate body through the heat-conducting groove and the heat insulation component inside the heat-conducting groove. This makes the surface of the heating plate assembly in contact with the food evenly heated, which helps to reduce or avoid the phenomenon of food burning.

[0028] In some embodiments, the heat insulation element is a solid component.

[0029] As described above, solid components allow for faster heat transfer in the insulation and reduce the likelihood of it melting.

[0030] In some embodiments, the thickness of the insulation element is D, where 1mm ≤ D ≤ 3mm.

[0031] As described above, since 1mm≤D≤3mm, the heat insulation component will not fail to transfer heat to the plate due to excessive thickness, nor will it transfer heat to the plate too quickly due to excessive thinness. This helps to reduce or avoid the phenomenon of scorching at the bottom.

[0032] In some embodiments, the heat insulation element includes an open slot; the interior of the open slot forms a heat transfer cavity.

[0033] As described above, by setting up the heat transfer cavity, the air inside the heat transfer cavity can make the heat transfer of the heat insulation plate relatively slower. The heat is transferred through the heat transfer cavity, which can further avoid the heat at the hot end being too concentrated. Ultimately, this helps to reduce or avoid the phenomenon of scorching at the bottom.

[0034] In some embodiments, the height of the heat transfer cavity along the thickness direction of the heating plate assembly is h, where 1mm ≤ h ≤ 2mm.

[0035] As described above, since 1mm≤h≤2mm, it helps to reduce or avoid the phenomenon of burning at the bottom. This is because if h is too large, the heat travels a long distance in the heat transfer cavity and cannot be transferred out in time, which may cause the hot end of the heating element to melt. If h is too small, the heat is transferred out quickly, and the surface of the plate may have inconsistent temperatures or large temperature differences, which may lead to the phenomenon of burning at the bottom.

[0036] In some embodiments, the opening groove includes a groove wall with a wall thickness of T, where 0.2 mm ≤ T ≤ 1 mm.

[0037] As described above, if the wall thickness is too thin, the insulation component is prone to deformation; if the groove wall is too thick, it is inconvenient to process. Therefore, 0.2mm≤T≤1mm makes the insulation component 4 easy to process and less prone to deformation.

[0038] In some embodiments, the heat insulation element is arc-shaped, with its two ends spaced apart by a preset angle β, where 30°≤β≤270°. This angle β range is appropriate, as it determines the circumferential length of the heat insulation element. By setting the circumferential length of the heat insulation element, the length of the heat insulation element that can cover the hot end can be determined, thereby controlling the heat ultimately transferred to the plate, ensuring uniform heating of the plate, and preventing the bottom from burning.

[0039] In some embodiments, 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.

[0040] Secondly, this application also discloses a cooking appliance. The cooking appliance includes a container, a controller, and any of the aforementioned heating plate assemblies, 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. As described above, the cooking appliance at least has the beneficial effects of the heating plate assembly.

[0041] In some embodiments, the cooking appliance further includes a stirring blade rotatably disposed within the food processing chamber to agitate the food within the chamber. The stirring blade is rotatably mounted to the heating plate assembly, with its blade located within the food processing chamber. This cooking appliance also features a agitation function, making it suitable for various applications such as preparing slurries and rice pastes. Attached Figure Description

[0042] Figure 1 This is a cross-sectional view of the mixing cup assembly of the cooking appliance of this application;

[0043] Figure 2 This is an exploded view of the first heating plate assembly of this application;

[0044] Figure 3 yes Figure 2 The heating plate assembly shown is a cross-sectional view in its assembled state;

[0045] Figure 4 This is an exploded view of the second type of heating plate assembly in this application;

[0046] Figure 5 yes Figure 4 The heating plate assembly shown is a cross-sectional view in its assembled state;

[0047] Figure 6 This is an exploded view of the third type of heating plate assembly in this application;

[0048] Figure 7 yes Figure 6 A cross-sectional view of the heating plate assembly shown in the image;

[0049] Figure 8 This is an exploded view of the fourth type of heating plate assembly in this application;

[0050] Figure 9 yes Figure 8 A cross-sectional view of the heating plate assembly shown in the image;

[0051] Figure 10 This is an exploded view of the fifth type of heating plate assembly in this application;

[0052] Figure 11 yes Figure 10 A cross-sectional view of the heating plate assembly shown in the image;

[0053] Figure 12 This is a top view of the heating element assembly;

[0054] Figure 13 This is a bottom view of the heating plate assembly in related technologies. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] See Figure 13The 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.

[0058] During the cooking process, the temperature of the hot zone is higher than that of the cold zone, which causes the food on plate 1 to burn (known in the industry as burnt bottom).

[0059] To solve the above problems, Figures 1 to 3 The first heating plate assembly 10 is disclosed. Figure 4 and Figure 5 A second type of heating plate assembly 10 is disclosed. Both 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. In other embodiments, the plate body 1 may have other layers disposed on it to allow contact with food through these other layers.

[0060] 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 includes 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. The ends of the heating wire dissipate heat more easily than the middle of the heating wire. Therefore, the heating element 3 forms the hot end 32 corresponding to the middle of the heating wire, and the cold end 31 corresponding to the ends of the heating wire. 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.

[0061] The heating element 3, the heat-conducting element 2, and the plate 1 are stacked. Regarding this stacking arrangement, on one hand, as shown in the accompanying drawings, the heat-conducting element 2 can be located between the plate 1 and the heating element 3; in other embodiments, the plate 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 within 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 1 through the heat-conducting element 2. The heat from the hot end 32 is transferred to the plate 1 through the heat insulation element 4.

[0062] 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 through 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 through the heat-conducting element 2 (in some embodiments, the heat from the hot end 32 is transferred to the heat insulation element 4 through the plate body 1, and the heat from the cold end 31 is transferred to the heat-conducting element 2 through the plate body 1; the surfaces of the heat-conducting element 2 and the heat insulation element 4 serve as the surfaces in contact with the food). Therefore, during the heat transfer process, although the heat generated by the hot end 32 is greater than that of the cold end 31, the thermal conductivity of the heat insulation element 4 is less than that of the heat-conducting element 2. Consequently, the surface of the heating plate assembly 10 in contact with the food (in this embodiment, the plate body 1; in other embodiments, it can be the surface composed of the heat-conducting element 2 and the heat insulation element 4) is heated evenly, which helps to reduce or avoid food burning. Because this helps reduce or avoid scorching, the heating power of the heating plate assembly 10 does not need to be reduced during cooking, resulting in a relatively short cooking time. Specifically, the thermal conductivity of the heat insulation component 4 is lower than that of the heat conduction component 2. During the transfer of heat from the hot end 32 to the plate body 1, some of the heat is blocked and slowed down by the heat insulation component 4. As a result, the plate body 1 is heated relatively evenly in the areas corresponding to the cold end 31 and the hot end 32. Consequently, the surface of the heating plate assembly in contact with the food is heated evenly, which helps reduce or avoid scorching.

[0063] See Figures 2 to 5 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.

[0064] 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.

[0065] See Figure 3 and Figure 5 The surfaces of the heat-insulating component 4 and the plate body 1 that are in contact with each other, as well as the surfaces of the heat-conducting component 2 and the plate body 1, are flush. With this flush arrangement, the surface of the plate body 1 that contacts the food is flat, which facilitates cleaning.

[0066] See Figures 2 to 5 The heat-conducting groove 21 extends through the heat-conducting element 2, and the heat-insulating element 4 contacts the disk body 1 and the hot end 32 respectively. Alternatively, for the heat-insulating element 4 with an opening groove 41, the opening groove 41 can form a heat transfer cavity 11 with either the disk body 1 or the hot end 32. In this case, the heat-insulating element 4 contacting the disk body 1 and the hot end 32 respectively means that one side of the heat-insulating element 4 contacts one of the hot end 32 and the disk body 1, and the side of the heat-insulating element 4 with the opening groove 41 contacts the other of the hot end 32 and the disk body 1, thus forming a heat transfer cavity 11. As described above, by providing the through-through heat-conducting groove 21, the heat-insulating groove 21 can position the heat-insulating element, facilitating the assembly of the heat-insulating element 4, the disk body 1, and the heat-conducting element 2. With the heat-insulating element 4 contacting both the disk body 1 and the hot end 32, the heat transfer path is shorter, which is beneficial for faster heat transfer.

[0067] See Figures 2 to 10 The heat-conducting groove 21 is a notch located 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 center of the heat-conducting element 2.

[0068] As described above, since the heat-conducting groove 21 is a notch located on the edge of the heat-conducting element 2, it facilitates manufacturing and processing while reducing or avoiding the phenomenon of sticking to the bottom.

[0069] See Figure 2 and Figure 4 , Figure 6 , Figure 8 , Figure 10The heat-conducting groove 21, the heat insulation element 4, and the hot end 32 are all arc-shaped. As described above, the arc shape is longer than a straight line, which increases the circumferential heat conduction length. This makes it easier for the heat from the hot end 32 to be transferred to the plate body 1 more slowly through the heat insulation element 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 the phenomenon of food burning.

[0070] In some embodiments, the heat insulation element 4 fills the heat-conducting element groove 21. As described above, by filling the heat-conducting element groove 21, it is easier to assemble the heat insulation element 4, etc., and the heat insulation element 4 is less likely to loosen, thus transferring heat better.

[0071] 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.

[0072] 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.

[0073] See Figures 1 to 3 , Figures 6 to 11The 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.

[0074] See Figures 1 to 5 , Figures 8 to 11 The groove 21 of the heat-conducting component passes through the heat-conducting component 2.

[0075] In some embodiments, the thickness of the heat insulation 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 insulation element 4 will not be too thick to fail to transfer heat to the plate, nor too thin to transfer heat to the plate too quickly, thereby helping to reduce or avoid scorching.

[0076] See Figure 4 and Figure 5 The heat insulation component 4 includes an opening groove 41; the opening groove 41 forms a heat transfer cavity 11. Specifically, the opening groove 41 is covered by the disc body 1, forming a heat transfer cavity 11. In other embodiments, the opening groove 41 is covered by the hot end 32, forming a heat transfer cavity 11. As described above, by setting the heat transfer cavity 11, the air inside the heat transfer cavity can make heat transfer relatively slow, and heat is first transferred to the heat transfer cavity, avoiding excessive heat concentration at the hot end. Ultimately, this helps to reduce or avoid scorching. Of course, in embodiments where a heat equalizing component 5 is provided above the heat conducting component 2, the opening groove 41 can be covered by the heat equalizing component 5 to form a heat transfer cavity 11.

[0077] See Figure 5 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.

[0078] 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.

[0079] Please refer to Figures 6 to 7 In one embodiment, the heat-conducting groove 21 is disposed on the surface of the heat-conducting element 2 facing the hot end 32, and is configured as a blind groove with a depth dimension smaller than the thickness dimension of the heat-conducting element 2. With this configuration, a portion of the heat transfer from the hot end 32 is first blocked and slowed down by the heat insulation element 4 before being transferred to the heat-conducting element 2, so that the heat from both the hot end 32 and the cold end 31 is transferred to the disk body 1 by the heat-conducting element 2. The heat-conducting element 2 can play a role in uniformizing the heat, making the disk body 1 more evenly heated, and preventing thermal marks from being generated in the area of ​​the disk body 1 corresponding to the hot end 32.

[0080] In one embodiment, the heat insulation element 4 is in contact with the hot end 42 and is flush with the surface of the heat-conducting element 2 facing the heating element 3. This allows the heat from both the hot and cold ends 32 to be directly transferred to the heat-conducting element 2 and the heat insulation element 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 element 4, and then transferred to the heat-conducting element 2 for further transfer, ensuring efficient heat transfer while ensuring uniform heating of the plate.

[0081] Please refer to Figure 8 and Figure 9 The heating plate assembly 10 also includes a heat equalization element 5, which is disposed between the heat-conducting element 2 and the plate body 1. That is, the heating element 3, heat-conducting element 2, heat equalization element 5, and plate body 1 are stacked sequentially. The side of the heat equalization element 5 facing the heat-conducting element 2 contacts both the heat-conducting element 2 and the heat insulation element 4, while the side facing the plate body 1 contacts the plate body 1. With this arrangement, the heat from the cold end 31 is transferred to the plate body 1 via the heat-conducting element 2 and the heat equalization element 5, and the heat from the hot end 32 is transferred to the plate body 1 via the heat insulation element 4 and the heat equalization element 5. The heat equalization element 5 can even out the heat transferred from the heat insulation element 4 and the heat-conducting element 2, further improving the problem of thermal marks formed on the plate body 1 due to different heat transfer rates.

[0082] exist Figure 9 In the illustrated embodiment, the surface of the heat-uniforming component 5 facing the heat-conducting component 2 is a flat plane throughout. The surfaces of the heat-insulating component 4 and the heat-uniforming component 5 that are in contact with each other are also flush. In other words, the surface of the heat-uniforming component 5 facing both the heat-insulating component 4 and the heat-conducting component 2 is flat and fits into both components, facilitating the manufacturing of the heat-uniforming component 5 and ensuring efficient heat transfer. (Reference) Figure 10 and Figure 11In one embodiment, the heat-uniforming component 5 has a heat-uniforming groove 51 on its surface facing the heat-conducting component 2. The depth of the heat-uniforming groove 51 is less than the thickness of the heat-uniforming component 5, and a portion of the heat-insulating component 4 is located within the heat-uniforming groove 41. Therefore, without increasing the size of the heating plate, the thickness of the heat-insulating component 4 can be appropriately increased, improving the heat insulation performance. Furthermore, the heat-insulating component 4 is installed within the space formed by the heat-conducting groove 21 and the heat-uniforming groove 51, making the structure of the heat-conducting component 2, the heat-insulating component 4, and the heat-uniforming component 5 more compact, and also making the installation position of the heat-insulating component 4 more stable.

[0083] In one embodiment, the thermal conductivity of the heat-uniforming component 5 is greater than that of the heat-insulating component 4. This results in lower thermal resistance and better heat uniformity of the heat-uniforming component 5. It can evenly distribute the heat transferred from the heat-insulating component 4 and the heat-conducting component 2 while avoiding heat loss, ensuring the heating effect of the heating plate assembly, and further improving the problem of thermal marks formed on the plate body due to different heat transfer rates. The heat-uniforming component 5 can be made of the same material as the heat-conducting component 2, such as aluminum, but is not limited to this.

[0084] In one embodiment, the heat insulation element 4 is configured as an arc-shaped strip structure, with a preset angle β between its two ends. Specifically, the central angle of the heat insulation element 4 is β, where 30° ≤ β ≤ 270°. The angle β can be, for example, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 120°, 150°, 180°, 200°, 240°, or 270°, but is not limited to these. The thickness of the heat insulation element 4 is 1mm ≤ D ≤ 3mm, for example, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm. This appropriate angle β range determines the circumferential length of the heat insulation element 4. By setting the circumferential length of the heat insulation element 4, the heat ultimately transferred to the plate 1 can be controlled, ensuring uniform heating of the plate and preventing scorching.

[0085] In one embodiment, the heat-conducting element 2 is further provided with a central hole 22 at its center, which can be used as a clearance hole, for example, for the blade shaft of the stirring blade 30 to pass through. The heat insulation element 4 is disposed in the groove 21 of the heat-conducting element and surrounds the periphery of the central hole 22.

[0086] exist Figures 8 to 11In the illustrated embodiment, the heat-conducting groove 21 is configured as a through groove extending along the thickness direction of the heat-conducting element 2, and the heat insulation element 4 contacts the heat-uniforming element 5 and the hot end 32 respectively. In other embodiments, the heat-conducting groove 21 can also be configured as a blind groove that does not extend along the thickness direction of the heat-conducting element 2, that is, the heat-conducting groove 21 is located on the surface of the heat-conducting element 2 facing the disk body 1, and the depth of the heat-conducting groove 21 is set to be less than the thickness of the heat-conducting element 2. In both of the above embodiments, the heat from the hot end 32 is transferred to the disk body 1 by the heat-uniforming element 5 after passing through the heat insulation element 4. The heat-uniforming element 5 can homogenize the heat transferred from the heat insulation element and the heat-conducting element, further improving the problem of thermal marks formed on the disk body due to different heat transfer rates.

[0087] In some other embodiments of this application (not shown in the figures), the heat-conducting groove 21 extends through the heat-conducting element 2, the thickness of the heat-insulating element 4 is less than the thickness of the heat-conducting element 2, and the heat-insulating element 4 defines an air heat-conducting layer within the heat-conducting groove 21. This arrangement allows an air heat-conducting layer to be formed on at least one side of the heat-insulating element 4. For example, an air heat-conducting layer can be formed on the side of the heat-insulating element 4 facing the hot end 32, on the side of the heat-insulating element 4 facing away from the hot end 32, or on both sides of the heat-insulating element 4. Thus, some of the heat from the hot end 32 is blocked or slowed down by the heat-insulating element 4 and the air heat-conducting layer, further improving the problem of excessive heat concentration at the hot end 32, and ultimately helping to reduce or avoid scorching.

[0088] exist Figures 6 to 11 In the illustrated embodiment, the heat insulation component 4 is a solid part. Of course, in other embodiments, it can also be a shell-shaped component. In embodiments where the heat insulation component 4 is a shell-shaped component, for example, as described in the above embodiments, the heat insulation component 4 can be provided with an opening slot 41. The opening slot can be closed by the hot end 32 to form a heat transfer space, or it can be closed by the heat equalizing component 5 to form a heat transfer cavity. In embodiments where a blind slot is formed above the heat-conducting component 2, the opening slot 41 can also be covered by the heat-conducting component 2 to form a heat transfer cavity. Alternatively, the heat insulation component 4, being a shell-shaped component, can also be a structure with an internally hollow and externally closed shell.

[0089] See Figure 12 In 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. It should be noted that the shape and size of the heat equalizing element 5 are approximately the same as the contact surface 12, thereby allowing heat to be evenly transferred to the contact surface 12 of the plate body 1.

[0090] It should be noted that all components of the heating plate assembly 10 can be metal components, and each metal component can be fixed by welding through processes such as lead soldering, but is not limited to this.

[0091] On the other hand, this application discloses a cooking appliance. The cooking appliance includes a container 20, a controller, and any of the aforementioned heating plate assemblies 10, with the plate body 1 and the container 20 forming a food processing cavity 201. The controller controls the heating element 3 to heat the food within the food processing cavity 201. The cooking appliance may be, for example, a food processor, a health pot, etc. The cooking appliance at least has the beneficial effects of the heating plate assembly, which will not be elaborated further.

[0092] exist Figure 1 In the illustrated embodiment, the cooking appliance also includes a stirring blade 30, which is rotatably disposed within the food processing chamber 201 to stir the food within the chamber. Specifically, the stirring blade 30 is rotatably mounted on the heating plate assembly 10, wherein the blade shaft of the stirring blade 30 passes through the heating plate assembly 10, and the axial direction of the blade shaft is aligned with the height direction of the container 20. The blade of the stirring blade 30 is disposed within the food processing chamber 201 for stirring the ingredients. Thus, this cooking appliance also has a stirring function, adaptable to various application scenarios such as making slurries and rice pastes.

[0093] 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 element (2) is provided with a heat-conducting element groove (21) corresponding to the area of ​​the hot end (32); the heat insulation element (4) is located in the heat-conducting element groove (21), and in the thickness direction of the heating plate assembly, the heat insulation element (4) is located between the hot end (32) and the plate body (1); the thermal conductivity of the heat insulation element (4) is less than that of the heat-conducting element (2); the heat of the cold end (31) is transferred to the plate body (1) through the heat-conducting element (2), and the heat of the hot end (32) is transferred to the plate body (1) through the heat insulation element (4).

2. The heating plate assembly according to claim 1, characterized in that, The surfaces of the heat insulation element (4) that are in contact with the disk body (1) and the surfaces of the heat-conducting element (2) that are in contact with the disk body (1) are flush; and / or The heat-conducting groove (21) extends through the heat-conducting element (2), and the heat insulation element (4) contacts the disk body (1) and the hot end (32) respectively.

3. The heating plate assembly according to claim 1, characterized in that, The heat-conducting groove (21) is provided on the side surface of the heat-conducting element (2) facing the hot end (32), and is configured as a blind groove with a depth dimension smaller than the thickness dimension of the heat-conducting element (2).

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

5. The heating plate assembly according to claim 1, characterized in that, The heating plate assembly (10) further includes a heat equalizing element (5) disposed between the heat-conducting element (2) and the plate body (1). The side of the heat equalizing element (5) facing the heat-conducting element (2) is in contact with the heat-conducting element (2) and the heat insulation element (4), and the side facing the plate body (1) is in contact with the plate body (1).

6. The heating plate assembly according to claim 5, characterized in that, The surface of the heat-uniforming component (5) facing the heat-conducting component (2) is a flat plane everywhere. The surfaces of the heat-insulating component (4) and the heat-uniforming component (5), as well as the surfaces of the heat-conducting component (2) and the heat-uniforming component (5), are flush. The surface of the heat-uniforming component (5) facing the heat-conducting component (2) is provided with a heat-uniforming groove (51). The depth of the heat-uniforming groove (51) is less than the thickness of the heat-uniforming component (5). The heat-insulating component (4) is also partially located in the heat-uniforming groove (51).

7. The heating plate assembly according to claim 6, characterized in that, The heat-conducting groove (21) is provided on the side surface of the heat-conducting element (2) facing the disk body (1), and is configured as a blind groove with a depth dimension smaller than the thickness dimension of the heat-conducting element (2); or, the heat-conducting groove (21) penetrates the heat-conducting element (2), and the heat insulation element (4) contacts the heat-uniforming element (5) and the hot end (32) respectively.

8. The heating plate assembly according to claim 6, characterized in that, The thermal conductivity of the heat-uniforming component (5) is greater than that of the heat-insulating component (4), or the thermal conductivity of the heat-uniforming component (5) is equal to that of the heat-conducting component (2).

9. The heating plate assembly according to claim 1, characterized in that, The heat-conducting groove (21) extends through the heat-conducting element (2), the thickness of the heat-insulating element (4) is less than the thickness of the heat-conducting element (2), and the heat-insulating element (4) defines an air heat-conducting layer within the heat-conducting groove.

10. The heating plate assembly according to any one of claims 1 to 3 or 5 to 9, wherein the heat-conducting groove (21) is a notch provided on the edge of the heat-conducting element (2).

11. The heating plate assembly according to any one of claims 1 to 3 or 5 to 9, characterized in that, The heat-conducting groove (21), the heat insulation element (4) and the hot end (32) are all arc-shaped, and / or the heat insulation element (4) fills the heat-conducting groove (21).

12. The heating plate assembly according to claim 11, characterized in that, 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.

13. The heating plate assembly according to any one of claims 1 to 3 or 5 to 9, 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°.

14. The heating plate assembly according to any one of claims 1-3 or 5 to 8, 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.

15. The heating plate assembly according to any one of claims 1 to 3 or 5 to 9, 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.

16. The heating plate assembly according to any one of claims 1 to 3 or 5 to 8, characterized in that, The heat insulation component (4) includes an open groove (41); the interior of the open groove (41) forms a heat transfer cavity (11).

17. The heating plate assembly according to claim 16, characterized in that, Along the thickness direction of the heating plate assembly, the height of the heat transfer cavity (11) is h, 1mm≤h≤2mm; and / or The opening groove (41) includes a groove wall (411) with a wall thickness of T, where 0.2mm≤T≤1mm.

18. 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).

19. 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 18, wherein the heating plate assembly (10) and the container (20) 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).

20. The cooking utensil according to claim 19, 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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