Heating disc and cooking utensil

Abstract

The utility model provides a heating plate and cooking utensil, the heating plate comprises a plate body, the plate body comprises a first plate surface and a second plate surface which are oppositely arranged along the height direction, the first plate surface is used for contacting with a pot body to heat the pot body, the first plate surface comprises a concave surface, and the concave surface is concave towards the direction close to the second plate surface; and the edge surface is arranged around the concave surface. According to the arrangement, when the heating disc emits heat, the concave surface is heated to deform upwards, so that the disc body can deform into an approximately flat structure after being heated, the bottom of the pan body can be arranged to be of a flat structure, it is ensured that the bottom of the pan body is flat, and frying and baking can be conveniently conducted through the pan body. And meanwhile, the edge surface is in contact with the pot body to seal the concave surface, so that heat generated by the concave surface can be blocked in the concave surface, heat leakage can be reduced, and the heating effect of the heating disc is ensured.

Description

Technical Field

[0001] This application relates to the field of household appliances, and more specifically, to a heating plate and a cooking utensil. Background Technology

[0002] Multi-functional cooking pots are among the most widely used cooking appliances, capable of steaming, boiling, frying, and grilling. As people's living standards improve, they have become a common household item.

[0003] Currently, in multi-functional cooking pots, the heating plate deforms upwards after being heated, resulting in a smaller contact area between the heating plate and the pot body, leading to poor heating efficiency. Therefore, to ensure a larger heating area, the interior of the pot needs to be designed with an upward-convex shape to accommodate the heated heating plate. However, this design results in an uneven bottom, making it difficult to fry or grill food.

[0004] Therefore, how to design a heating plate and cooking utensil that can ensure the heating area of ​​the pot body while also making the bottom of the pot body relatively flat has become an urgent problem to be solved. Utility Model Content

[0005] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the first aspect of this application is to propose a heating plate.

[0007] The second aspect of this application is to propose a cooking utensil.

[0008] The first aspect of this application provides a heating plate for a cooking appliance. The cooking appliance includes a pot body, and the heating plate is used to heat the pot body. The heating plate includes: a plate body, including a first plate surface and a second plate surface disposed opposite each other along the height direction. The first plate surface is used to contact the pot body to heat the pot body. The first plate surface includes: a concave surface, which is recessed in the direction close to the second plate surface; and an edge surface, which is disposed around the concave surface.

[0009] According to the heating plate provided in this application, the pot body is placed on the heating plate to heat the pot body and thus the food inside. The heating plate includes a first plate surface and a second plate surface, which are the upper and lower plates of the heating plate. The heating plate supports and heats the pot body through contact with the first plate surface. The first plate surface includes a concave surface and an edge surface, with the edge surface surrounding the concave surface. The pot body can be supported and mounted on the edge surface. When not heated, the concave surface is concave. When the heating plate heats up, the concave surface deforms upwards, thereby reducing the distance between the plate and the pot body and increasing their relative surface area. Furthermore, this design eliminates the need for the pot body to be convex, resulting in a more flat pot body. At the same time, this structure can seal at least part of the concave surface by contacting the edge surface with the pot body. This can lock the heat generated by the concave surface inside the concave surface, thereby reducing heat leakage and ensuring the heating effect of the heating plate.

[0010] Optionally, the concave surface deforms upwards into a roughly flat structure when heated. That is, when the heating plate is working, the plate body deforms due to heat to form a relatively flat heating plate surface. This structure allows the bottom of the matching pot to be set to a relatively flat structure, that is, it is not necessary to set the bottom of the pot body to be a convex structure, thus ensuring the flatness of the bottom of the pot body, which facilitates frying and grilling.

[0011] Along the height of the disk, the lowest point of the concave surface is located in the middle of the disk. This lowest point can be a point or a surface. In this application, the central region of the entire upper surface of the disk is concave inwards.

[0012] Furthermore, the concave surface can be roughly one or a combination of polygonal concave surfaces, arc-shaped concave surfaces, or irregular concave surfaces.

[0013] The edge surface is arranged in a ring around the circumference of the concave surface, so that the concave surface can be enclosed by the edge surface to reduce heat loss from the concave surface.

[0014] In addition, the heating plate in the above-mentioned technical solution provided in this application may also have the following additional technical features:

[0015] In the above technical solution, optionally, when the pot is placed on the plate, the distance between the concave surface and the pot gradually increases from the circumference of the plate to the center of the plate in the height direction of the plate.

[0016] In this technical solution, the distance between the concave surface and the pot body gradually increases along the circumference of the plate to the center of the plate. That is, the concave part of the concave surface is roughly arc-shaped. Since the thermal expansion of the arc-shaped concave surface is relatively uniform, after the heating plate heats up, the arc-shaped concave surface will gradually become flat, forming a near-plane effect. This allows the heating plate to form a flat supporting heating surface after being heated, thus facilitating the cooperation between the plate and the pot body for heating.

[0017] In the above technical solution, optionally, the concave surface is part of a spherical surface.

[0018] In this technical solution, by setting the concave surface as part of a spherical surface, the concave surface becomes closer to a plane after the heating plate heats up, which further improves the fit between the plate and the pot.

[0019] Optionally, in the above technical solution, a support portion is provided at the junction of the concave surface and the edge surface, and the support portion is used to contact the pot body to support the pot body.

[0020] In this embodiment, a support portion is provided at the junction of the concave surface and the edge surface. This support portion can be formed by connecting the concave surface and the edge surface, or it can be formed independently of the edge surface. This support portion supports the pot body, and a sealed area can be formed by the support portion, the concave surface, and the bottom surface of the pot body. Thus, when the heating plate heats up, the support portion can seal off the heat on the concave surface, preventing heat loss and ensuring the heating effect of the heating plate on the pot body, thereby improving thermal efficiency.

[0021] In the above technical solution, optionally, the support is formed by connecting a concave surface and an edge surface. For example, the concave surface and the edge surface can be connected in an upwardly convex arc shape, thereby forming an arc-shaped support structure to support the pot body.

[0022] In the above technical solution, optionally, the support part is an arc-shaped structure that protrudes from the first disc surface in a direction away from the second disc surface. That is, the concave surface and the edge surface are connected in an arc shape, so that the two can be smoothly connected, thereby ensuring the aesthetics of the first disc surface.

[0023] In the above technical solution, optionally, the edge surface includes: a first region, which is disposed circumferentially along the concave surface and connected to the concave surface, and the first region forms a support portion.

[0024] In this technical solution, the first region is set around the concave surface and is arranged circumferentially along the concave surface. The first region can form a support part to contact the pot body and support the pot body. In this way, the first region, the concave surface and the bottom surface of the pot body will form a sealed area. When the heating plate heats up, the heat generated by the concave surface can be prevented from being lost due to the sealed contact between the first region and the pot body, thereby ensuring the heating effect of the heating plate on the pot body and improving the heating efficiency.

[0025] Optionally, in the above technical solution, the edge surface further includes: a second region, which is disposed around the first region and connected to the first region, wherein the highest position of the first region in the height direction of the disk body is higher than or level with the highest position of the second region in the height direction of the disk body.

[0026] In this technical solution, by setting a second region around the first region, and ensuring that the highest position of the first region in the height direction of the pan is not lower than the highest position of the second region (i.e., the highest position of the second region is not higher than the highest position of the first region), the first region can form the highest point, thereby supporting the pan.

[0027] In the above technical solution, optionally, the height of the first region is consistent from the middle of the disk to the edge of the disk.

[0028] In this embodiment, by supporting the pot body with a plane, the contact area between the first region and the pot body can be ensured, thereby ensuring the stability of the first plane supporting the pot body.

[0029] In the above technical solution, optionally, the first region is an arc-shaped region that protrudes away from the second disk surface.

[0030] In this technical solution, by setting the first area to be arc-shaped, the entire edge surface can be made smoother, which will make the edge surface processing easier and also improve the aesthetics of the first plate surface.

[0031] In the above technical solution, optionally, the second region extends obliquely toward the second disk surface from the middle of the disk body to the edge of the disk body.

[0032] In this technical solution, the second region is a downwardly recessed arc-shaped structure or a sloping straight-line extension structure. This ensures that the second region is lower than the first region in the height direction of the plate, allowing the first region to better contact and fit with the pot body, while also increasing the aesthetics of the overall heating plate structure. Of course, in other embodiments, the second region can also be horizontally arranged.

[0033] In addition, the second area is lower than the first area in the height direction of the plate, which can more intuitively show the boundary between the first and second areas, making it easier for users to distinguish the specific placement position of the pot. That is, this structure can locate the placement position of the pot by the edge of the first area, thus making the pot more centered and avoiding the pot being installed crookedly.

[0034] In the above technical solution, optionally, the support portion is arranged in a ring shape along the circumference of the concave surface. By setting the support portion in a ring shape, heat can be better locked in and prevented from dissipating to areas outside the concave surface, thus improving the heating efficiency of the heating plate on the pot body.

[0035] Optionally, in the above technical solution, the heating plate further includes a heating element, which is installed on the second plate surface of the plate body for heating the plate body.

[0036] In this technical solution, after the heating plate is powered on, the heating element converts electrical energy into heat energy to heat the plate body. The heated plate body then comes into contact with the pot body, thereby transferring heat to the pot body to achieve the cooking function.

[0037] Optionally, in the above technical solution, the heating element includes: a first heating element, which is installed on the second plate surface of the plate body, and the orthographic projection of the first heating element in the height direction of the plate body is located inside the orthographic projection of the support part in the height direction of the plate body.

[0038] In this technical solution, the first heating element is located on the inner side of the support and close to the edge of the recessed area on the projection along the height of the plate. That is, the first heating element cannot be too far away from the support. This ensures that the first heating element can heat the entire recessed surface and prevents heat from dissipating outside the recessed surface. This prevents heat leakage and allows more heat to be transferred to the pot body to heat the pot body.

[0039] In addition, provided there is sufficient space between the first heating element and the recessed area, a second heating element can be installed on the second plate surface within the projection area of ​​the recessed area to further enhance the heating effect on the pot. Alternatively, reinforcing ribs can be added inside the first heating element to ensure its overall strength and prevent it from deforming due to heat, thus affecting the heating effect.

[0040] Furthermore, the first heating element is arranged in a ring on the second plate surface of the plate body, thereby increasing the heating area of ​​the first heating element on the first plate surface.

[0041] In the above technical solution, optionally, the heating element includes a first heating element, which is tubular and extends from the edge of the plate to the middle of the plate. The distance between the highest part of the support in the height direction of the plate and the center of the first heating element is greater than or equal to 10 mm and less than or equal to 25 mm.

[0042] In this technical solution, the distance between the highest part of the support and the center of the first heating element can be 10mm-25mm. This ensures that the position of the first heating element is set in a relatively moderate manner, avoiding the first heating element being set too close to the center of the plate, which would cause the heat of the heating plate to concentrate in the center of the plate. At the same time, it also avoids the first heating element being too close to the support, which would cause the heat to be easily transferred to the outside of the recessed surface, resulting in heat loss.

[0043] In the above technical solution, optionally, the maximum amount of depression on the concave surface along the height direction of the disc body is greater than or equal to 0.2 mm and less than or equal to 1 mm; and / or when the disc body is heated to the maximum deformation, the maximum amount of depression on the concave surface along the height direction of the disc body is greater than or equal to 0 mm and less than or equal to 0.2 mm.

[0044] In this technical solution, the maximum amount of concave surface when the heating plate is not heating, and the maximum amount of concave surface when the plate body reaches the maximum deformation due to heating, are both set according to the amount of deformation that the heating plate material can produce when heating. This ensures that when the heating plate is heating, the concave surface is as close to a plane as possible, neither forming a convex shape nor a concave shape, thus making better contact with the bottom surface of the pot body.

[0045] The second aspect of this application provides a cooking appliance, including the heating plate provided in the first aspect.

[0046] The cooking appliance provided in this application includes the heating plate provided in the first aspect of the technical solution. Therefore, the cooking appliance has all the beneficial effects of the heating plate provided in the first aspect of the technical solution, which will not be repeated here.

[0047] In the above technical solutions, the cooking appliances include at least one of a multi-functional pot, an electric pressure cooker, and a rice cooker.

[0048] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0049] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0050] Figure 1A schematic diagram of the structure of a cooking appliance according to an embodiment of this application is shown;

[0051] Figure 2 One of the structural schematic diagrams of a heating plate according to an embodiment of this application is shown;

[0052] Figure 3 It shows Figure 2 A cross-sectional view of the heating plate along the AA direction;

[0053] Figure 4 A second schematic diagram of the structure of a heating plate according to an embodiment of this application is shown;

[0054] Figure 5 A schematic diagram of the structure of the first plate surface of the heating plate according to an embodiment of this application is shown.

[0055] Figure label:

[0056] 100 Heating plate, 1 Plate body, 12 First plate surface, 122 Recessed surface, 124 Edge surface, 1242 First region, 1244 Second region, 126 Support part, 14 Second plate surface, 2 Heating element, 22 First heating element, 200 Pot body. Detailed Implementation

[0057] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0059] The following reference Figures 1 to 5 This application describes heating plates and cooking appliances provided according to some embodiments.

[0060] like Figures 1 to 5 As shown, an embodiment of the first aspect of this application provides a heating plate 100 for a cooking appliance, the cooking appliance including a pot body 200, and the heating plate 100 for heating the pot body 200. The heating plate 100 includes a plate body 1. The plate body 1 includes a first plate surface 12 and a second plate surface 14 disposed opposite each other along the height direction. The first plate surface 12 is used to contact the pot body 200 to heat the pot body 200. The first plate surface 12 includes a recessed surface 122 and an edge surface 124. The recessed surface 122 is recessed towards the second plate surface 14. The edge surface 124 is disposed around the recessed surface 122.

[0061] According to the heating plate 100 provided in this application, the pot body 200 is placed on the heating plate 100 to heat the pot body 200 and thus heat the food inside. The heating plate 100 includes a first plate surface 12 and a second plate surface 14, which are the upper and lower plates of the heating plate 100, respectively. The heating plate 100 contacts the pot body 200 through the first plate surface 12 to support and heat the pot body 200. The first plate 12 comprises a concave surface 122 and an edge surface 124. The edge surface 124 is disposed around the concave surface 122, and the pot body 200 can be supported and mounted on the edge surface 124. When not heated, the concave surface 122 is concave. When the heating plate 100 heats up, the concave surface 122 deforms upwards, thereby reducing the distance between the plate 1 and the pot body 200, thus increasing their relative area. Furthermore, this design eliminates the need for the pot body 200 to be convex, allowing for a more flat surface. Simultaneously, this structure allows the edge surface 124 to contact the pot body 200, achieving at least partial sealing of the concave surface 122. This confines the heat generated by the concave surface 122 within it, reducing heat loss and ensuring the heating effect of the heating plate 100.

[0062] Optionally, the concave surface 122 deforms upwards into a roughly flat structure when heated. That is, when the heating plate 100 is working, the plate body 1 deforms after being heated to form a relatively flat heating plate surface. This structure allows the bottom of the matching pot body 200 to be set into a relatively flat structure, that is, it is not necessary to set the bottom of the pot body 200 into a convex structure. This ensures the flatness of the bottom of the pot body 200, thus facilitating frying and grilling through the pot body 200.

[0063] Along the height direction of the disk body 1, the lowest point of the recessed surface 122 is located in the middle of the disk body 1. This lowest point can be a point or a surface. That is, in this application, the entire middle region of the upper surface of the disk body 1 is recessed inwards.

[0064] Furthermore, the concave surface 122 may be generally a polygonal concave surface, an arc-shaped concave surface, or an irregular concave surface, or a combination thereof.

[0065] The edge surface 124 is arranged in a ring around the circumference of the recessed surface 122, so that the recessed surface 122 can be surrounded by the edge surface 124 to reduce the heat loss of the recessed surface 122.

[0066] In the above embodiments, optionally, as shown... Figure 3As shown, when the pot body 200 is placed on the plate body 1, the distance between the concave surface 122 and the pot body 200 in the height direction of the plate body 1 gradually increases from the circumference of the plate body 1 to the center of the plate body 1.

[0067] In this embodiment, along the circumference of the plate 1 to the middle of the plate 1, the distance between the concave surface 122 and the pot 200 in the height direction of the plate 1 gradually increases. That is, the concave part of the concave surface 122 is roughly arc-shaped. Since the thermal expansion of the arc-shaped concave surface is relatively uniform, after the heating plate 100 heats up, the arc-shaped concave surface will gradually become flat, forming a near-planar effect. This allows the heating plate 100 to form a flat supporting heating surface after being heated, thereby facilitating the cooperation between the plate 1 and the pot 200 for heating.

[0068] In the above embodiments, the recessed surface 122 may optionally be part of a spherical surface.

[0069] In this embodiment, by setting the concave surface 122 as part of a spherical surface, it is better for the concave surface 122 to form a near-plane shape after the heating plate 100 heats up, which further improves the fit between the plate body 1 and the pot body 200.

[0070] In the above embodiments, optionally, as shown... Figure 1 , Figure 2 and Figure 5 As shown, a support portion 126 is provided at the junction of the recessed surface 122 and the edge surface 124. The support portion 126 is used to contact the pot body 200 to support the pot body 200.

[0071] In this embodiment, a support portion 126 is provided at the connection between the recessed surface 122 and the edge surface 124. The support portion 126 can be formed by connecting the recessed surface 122 and the edge surface 124, or the edge surface 124 can be formed independently. The support portion 126 can support the pot body 200, and a sealed area can be formed by the support portion 126, the recessed surface 122, and the bottom surface of the pot body 200. In this way, when the heating plate 100 heats up, the heat on the recessed surface 122 can be sealed by the support portion 126 to prevent the heat generated by the recessed surface 122 from being lost, thereby ensuring the heating effect of the heating plate 100 on the pot body 200 and improving thermal efficiency.

[0072] In the above embodiments, optionally, as shown... Figure 5 As shown, the support portion 126 is formed by connecting a recessed surface 122 and an edge surface 124. For example, the recessed surface 122 and the edge surface 124 can be connected in an upwardly convex arc shape, thereby forming an arc-shaped support structure to support the pot body 200.

[0073] In the above embodiments, optionally, as shown... Figure 1 and Figure 2As shown, the support portion 126 is an arc-shaped structure that protrudes from the first disc surface 12 in a direction away from the second disc surface 14. That is, the recessed surface 122 and the edge surface 124 are connected in an arc shape, so that the two can be smoothly connected, thereby ensuring the aesthetics of the first disc surface 12.

[0074] In the above embodiments, optionally, as shown... Figure 1 and Figure 2 As shown, the edge surface 124 includes a first region 1242, which is disposed circumferentially along the recessed surface 122 and connected to the recessed surface 122. The first region 1242 forms a support portion 126.

[0075] In this embodiment, the first region 1242 is disposed around the recessed surface 122 and is disposed along the circumference of the recessed surface 122. The first region 1242 can form a support portion 126 to contact the pot body 200 to support the pot body 200. In this way, the first region 1242, the recessed surface 122 and the bottom surface of the pot body 200 will form a sealed area. When the heating plate 100 heats up, the heat generated by the recessed surface 122 can be prevented from dissipating due to the sealed contact between the first region 1242 and the pot body 200, thereby ensuring the heating effect of the heating plate 100 on the pot body 200 and improving the heating efficiency.

[0076] In the above embodiments, optionally, as shown... Figure 1 and Figure 2 As shown, the edge surface 124 further includes a second region 1244, which is disposed around the first region 1242 and connected to the first region 1242. The highest position of the first region 1242 in the height direction of the disk body 1 is higher than or level with the highest position of the second region 1244 in the height direction of the disk body 1.

[0077] In this embodiment, by setting a second region 1244 around the first region 1242, and ensuring that the highest position of the first region 1242 in the height direction of the pan body 1 is not lower than the highest position of the second region 1244, that is, the highest position of the second region 1244 is not higher than the highest position of the first region 1242, the first region 1242 can form the highest point, thereby achieving support for the pan body 200.

[0078] In the above embodiments, optionally, the height of the first region 1242 is consistent from the middle of the disk body 1 to the edge of the disk body 1.

[0079] In this embodiment, by supporting the pot body 200 with a plane, the contact area between the first region 1242 and the pot body 200 can be ensured, thereby ensuring the stability of the first plane supporting the pot body 200.

[0080] In the above embodiments, optionally, the first region 1242 is an arc-shaped region that protrudes away from the second disk surface 14.

[0081] In this embodiment, by setting the first region 1242 to be arc-shaped, the entire edge surface 124 can be made smoother, which will make the processing of the edge surface 124 easier and also improve the aesthetics of the first disc surface 12.

[0082] In the above embodiments, optionally, as shown... Figure 1 and Figure 3 As shown, the second region 1244 extends obliquely toward the second disk surface 14 from the middle of the disk body 1 to the edge of the disk body 1.

[0083] In this embodiment, the second region 1244 is a downwardly recessed arc-shaped structure or an inclined straight-line extension structure. This ensures that the second region 1244 is lower than the first region 1242 in the height direction of the plate 1, allowing the first region 1242 to better contact and fit with the pot body 200, while also increasing the overall aesthetics of the heating plate 100. Of course, in other embodiments, the second region 1244 can also be horizontally arranged.

[0084] Furthermore, since the second region 1244 is lower than the first region 1242 in the height direction of the plate body 1, it can more intuitively show the boundary between the first region 1242 and the second region 1244, making it easier for users to distinguish the specific placement position of the pot. In other words, this structure can locate the placement position of the pot body 200 by the edge of the first region 1242, thus achieving the positioning of the pot body 200. This makes the installation position of the pot body 200 more centered and avoids the pot body 200 being installed crookedly.

[0085] In the above embodiment, optionally, the support portion 126 is arranged in a ring shape along the circumference of the recessed surface 122. By providing a ring-shaped support portion 126, heat can be better locked in, preventing heat from dissipating to areas outside the recessed surface 122, thereby improving the heating efficiency of the heating plate 100 on the pot body 200.

[0086] In the above embodiments, optionally, as shown... Figure 1 and Figure 4 As shown, the heating plate 100 also includes a heating element 2, which is installed on the second plate surface 14 of the plate body 1 and is used to heat the plate body 1.

[0087] In this embodiment, after the heating plate 100 is powered on, the heating element 2 converts electrical energy into heat energy to heat the plate body 1. The heated plate body 1 then comes into contact with the pot body 200, thereby transferring heat to the pot body 200 to achieve the cooking function.

[0088] In the above embodiments, optionally, as shown... Figure 1 As shown, the heating element 2 includes a first heating element 22, which is mounted on the second plate surface 14 of the plate body 1. The orthographic projection of the first heating element 22 in the height direction of the plate body 1 is located inside the orthographic projection of the support portion 126 in the height direction of the plate body 1.

[0089] In this embodiment, the first heating element 22 is disposed on the inner side of the support portion 126 and close to the edge of the recessed surface 122 on the projection along the height direction of the plate body 1. That is, the first heating element 22 cannot be too far away from the support portion 126. This ensures that the first heating element 22 can heat the entire recessed surface 122, while also preventing heat from dissipating outside the recessed surface 122. This prevents heat leakage and allows more heat to be transferred to the pot body 200, thereby heating the pot body 200.

[0090] In addition, while ensuring sufficient space between the first heating element 22 and the recessed surface 122, a second heating element can be installed on the second plate surface 14 within the projection area of ​​the recessed surface 122 to further enhance the heating effect on the pot body 200. Alternatively, reinforcing ribs can be provided inside the first heating element 22 to ensure its overall strength and prevent it from deforming due to heat, thus affecting the heating effect.

[0091] Furthermore, the first heating element 22 is arranged in a ring on the second plate surface 14 of the plate body 1, thereby increasing the heating area of ​​the first heating element 22 on the first plate surface 12.

[0092] In the above embodiments, optionally, as shown... Figure 1 and Figure 3 As shown, the heating element 2 includes a first heating element 22, which is tubular and extends from the edge of the disk body 1 to the center of the disk body 1. The distance between the highest point of the support portion 126 in the height direction of the disk body 1 and the center of the first heating element 22 is (e.g., ...). Figure 1 The dimension D in the middle is greater than or equal to 10 mm and less than or equal to 25 mm.

[0093] In this embodiment, the distance between the highest part of the support 126 and the center of the first heating element 22 can be 10mm-25mm. This ensures that the position of the first heating element 22 is set in a relatively moderate manner, avoiding the first heating element 22 being set too close to the center of the plate body 1, which would cause the heat of the heating plate 100 to concentrate in the center of the plate body 1. At the same time, it also avoids the first heating element 22 being too close to the support 126, which would cause the heat to be easily transferred to the outside of the recessed surface 122, resulting in heat loss.

[0094] In the above embodiments, optionally, as shown... Figure 1 As shown, the maximum amount of depression on the concave surface 122 along the height direction of the disk body 1 (e.g.) Figure 1 The H in the figure is greater than or equal to 0.2 mm and less than or equal to 1 mm; and / or when the disc body 1 is heated to the maximum deformation, the maximum amount of depression of the concave surface 122 along the height direction of the disc body 1 is greater than or equal to 0 mm and less than or equal to 0.2 mm.

[0095] In this embodiment, the maximum amount of concavity of the concave surface 122 when the heating plate 100 is not heating, and the maximum amount of concavity when the plate body 1 reaches the maximum deformation due to heating, are both set according to the amount of deformation that the material of the heating plate 100 can produce when heating. This ensures that when the heating plate 100 is heating, the concave surface 122 is as close to a plane as possible, neither forming a convex shape nor a concave shape, thereby making better contact with the bottom surface of the pot body 200.

[0096] like Figure 1 As shown, an embodiment of the second aspect of this application provides a cooking appliance, including the heating plate 100 provided in the first aspect embodiment.

[0097] The cooking appliance provided in this application includes the heating plate 100 provided in the first aspect embodiment. Therefore, the cooking appliance has all the beneficial effects of the heating plate 100 provided in the first aspect embodiment, which will not be repeated here.

[0098] like Figure 1 As shown, the cooking appliance also includes a pot body 200, which can be placed on the first plate surface 12 of the plate body 1 for heating by the plate body 1.

[0099] In the above embodiments, the cooking appliance includes at least one of a multi-functional pot, an electric pressure cooker, and a rice cooker.

[0100] The heating plate 100 and cooking utensils of this application will be further described below with reference to a specific embodiment.

[0101] Cooking utensils include:

[0102] Pot body 200: Placed on heating plate 100 and heated.

[0103] Heating element (heating element 2): converts electrical energy into heat energy to generate heat.

[0104] Heating plate body (plate 1): It carries the heating tube and conducts the heat from the heating tube to the pot body.

[0105] The upper surface (first plate surface 12) of the heating plate body is composed of multiple arc surfaces, and the overall surface shape is concave. The arc surfaces are divided into three functional areas: the heat-resistant deformation area (concave surface 122), the first area 1242, and the second area 1244.

[0106] Heat-resistant deformation zone: The shape is a concave curved surface. The lowest point of this zone is at a certain height from the horizontal plane. It can neutralize the deformation when the heating plate body bulges upward due to heat, so that the surface of the heating plate tends to be horizontal.

[0107] The first region 1242 is an annular arc surface that can form a sealing ring with the bottom of the pot, so that the anti-deformation zone and the heated zone of the bottom of the pot form a sealed area, thereby improving thermal efficiency.

[0108] The second area 1244 has a concave arc shape, which avoids contact between the outer pot of the heat-locking ring and the heating plate, so that the contact position only falls on the heat-locking ring, which is more conducive to forming a sealed heating area.

[0109] like Figure 4 As shown, the heating plate mainly consists of two parts: the heating plate body (plate 1) and the heating tube (heating element 2). The heating tube is integrally formed with the heating plate body through die casting or casting process. The heating plate body has radiating shapes and annular ribs for reinforcement to prevent deformation during production.

[0110] like Figure 2 and Figure 3 As shown, the upper surface of the heating plate body is composed of multiple arc surfaces, and the overall surface shape is concave. The arc surfaces are divided into three functional areas: the heat deformation resistant area (concave surface 122), the first area 1242, and the second area 1244.

[0111] Heat-resistant deformation zone: The shape is a concave curved surface. The lowest point of this zone is at a certain height from the horizontal plane. It can neutralize the deformation when the heating plate body bulges upward due to heat, so that the surface of the heating plate tends to be horizontal.

[0112] The first region 1242 is an annular arc surface that can form a sealing ring with the bottom of the pot, so that the anti-deformation zone and the heated zone of the bottom of the pot form a sealed area, thereby improving thermal efficiency.

[0113] The second area 1244 has a concave arc shape, which avoids contact between the outer pot of the heat-locking ring and the heating plate, so that the contact position only falls on the heat-locking ring, which is more conducive to forming a sealed heating area.

[0114] The heating element in this application works on the following principle:

[0115] When cold, the pot is placed on the heating plate, and the heat-locking ring contacts the bottom of the pot to form a sealing surface. The heated area of ​​the pot is a circle the size of the diameter of the heat-locking ring.

[0116] When heated, the heating plate undergoes thermal deformation and bulges upward. The annular and radial ribs of the "plate body reinforcement ribs" control the deformation within 1mm.

[0117] like Figure 1As shown, the distance from the highest point of the heating plate's heat-locking ring to the center of the heating tube is D, and the value of D is between 10mm and 25mm, selected according to the outer dimensions of the plate.

[0118] like Figure 1 As shown, the concavity of the lowest point of the anti-deformation zone is H, which is between 0.2mm and 1mm. It is selected according to the deformation of the heating plate in the hot state to ensure that the distance between the lowest point of the anti-deformation zone of the plate and the horizontal plane is between 0mm and 0.2mm in the hot state, and the plate surface does not bulge.

[0119] Through the compensation of the anti-deformation zone of the core, the heating area of ​​the pot remains constant. As the heating plate changes from a cold state to a hot state, the fit between the pot and the heating plate becomes higher and higher, thus ensuring high thermal efficiency.

[0120] To address the issue of convex spherical heating plates on the market, which bulge further upon heating, reducing the contact area with the pot bottom and leading to poor heating, this application designs the heating plate core as a concave surface. This concave surface acts as a pre-deformation compensation for the thermal deformation of the heating plate, causing it to become slightly concave and more horizontal after thermal deformation, thus ensuring sufficient contact area with the pot bottom and guaranteeing heating effect.

[0121] The shape of the heating plate is not limited to a circle; it can also be a rectangle, polygon, etc.

[0122] The heating plate of this application is composed of multiple arc surfaces, which integrates heat resistance and heat conduction, effectively avoiding the impact of heating plate heat deformation on heating effect, and ensuring uniform heating of the pot bottom and good heating effect.

[0123] The core point of this embodiment is:

[0124] 1) The heating plate has three functional areas: the second area, the first area, and the concave area in the center of the plate.

[0125] 2) The concave area in the center of the disc is the most important, as it is used to compensate for thermal deformation.

[0126] 3) The distance between the highest point of the heating plate's heat-locking ring and the center of the heating tube is between 10mm and 25mm.

[0127] 4) The concavity at the lowest point of the deformation-resistant zone is between 0.2mm and 1mm.

[0128] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0129] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A heating plate, characterized in that, A cooking utensil, the cooking utensil including a pot body, the heating plate for heating the pot body, the heating plate including: The pan body includes a first pan surface and a second pan surface disposed opposite each other along the height direction. The first pan surface is used to contact the pot body to heat the pot body. The first pan surface includes: The recessed surface is recessed in a direction close to the second disk surface; An edge surface, which is disposed around the recessed surface.

2. The heating plate according to claim 1, characterized in that, When the pot is placed on the plate, the distance between the concave surface and the pot in the height direction of the plate gradually increases from the edge of the plate to the center of the plate.

3. The heating plate according to claim 2, characterized in that, The concave surface is part of a spherical surface.

4. The heating plate according to claim 1, characterized in that, A support portion is provided at the junction of the recessed surface and the edge surface. The support portion is used to contact the pot body to support the pot body.

5. The heating plate according to claim 4, characterized in that, The support portion is formed by connecting the edge surface and the recessed surface; and / or The support portion is an arc-shaped structure that protrudes from the first disk surface in a direction away from the second disk surface.

6. The heating plate according to claim 5, characterized in that, The edge surface includes: A first region is provided along the circumference of the recessed surface and is connected to the recessed surface, and the first region forms the support portion; The second region is disposed around the first region and connected to the first region. The highest position of the first region in the height direction of the disk body is higher than or level with the highest position of the second region in the height direction of the disk body.

7. The heating plate according to claim 6, characterized in that, From the middle of the disk to its edge, the height of the first region is consistent; or The first region is an arc-shaped region that is concave away from the second disk surface.

8. The heating plate according to claim 6, characterized in that, The second region extends at an angle toward the second disk surface from the middle of the disk body to the edge of the disk body.

9. The heating plate according to claim 4, characterized in that, The support portion is arranged in a ring around the circumference of the recessed surface.

10. The heating plate according to claim 4, characterized in that, Also includes: A heating element is installed on the second plate surface of the plate body for heating the plate body.

11. The heating plate according to claim 10, characterized in that, The heating element includes: A first heating element is mounted on the second plate surface of the plate body, and the orthographic projection of the first heating element in the height direction of the plate body is located inside the orthographic projection of the support part in the height direction of the plate body.

12. The heating plate according to claim 10, characterized in that, The heating element includes a first heating element, which is tubular and extends from the edge of the disc to the center of the disc. The distance between the highest point of the support portion in the height direction of the disc and the center of the first heating element is greater than or equal to 10 mm and less than or equal to 25 mm.

13. The heating plate according to any one of claims 1 to 12, characterized in that, The maximum indentation along the height direction of the disc body is greater than or equal to 0.2 mm and less than or equal to 1 mm; and / or When the disc body reaches its maximum deformation due to heat, the maximum amount of depression on the concave surface along the height direction of the disc body is greater than or equal to 0 mm and less than or equal to 0.2 mm.

14. A cooking utensil, characterized in that, Includes the heating plate as described in any one of claims 1 to 13.

15. The cooking utensil according to claim 14, characterized in that, The cooking appliance includes at least one of a multi-functional pot, an electric pressure cooker, and a rice cooker.

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