Heating device and cooking utensil

Abstract

The utility model discloses a heating device and a cooking utensil, and the heating device comprises a panel which is provided with a heating surface and a heating surface; the heating sheet is arranged on one side of the heating surface of the panel and is suitable for heating the heating surface; the heat insulation layer is arranged on the side, away from the panel, of the heating piece; and the thickness of the heating sheet is less than or equal to 0.5 mm. Therefore, the panel is arranged above the heating sheet, the panel, the heating sheet and the heat insulation layer are overlapped to enable the heating device to be in a flat plate shape, the manufacturing process of the heating device is simplified, the heat insulation layer is arranged on the side, away from the panel, of the heating sheet, so that the one-way heat transfer effect of the heating sheet is improved, in addition, the thickness of the heating sheet is smaller than or equal to 0.5 mm, and the heat transfer efficiency is improved. The resistance of the heating sheet is increased, the working temperature of the heating device is improved, the occupied space of the heating sheet can be reduced, and the overall thickness of the heating device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, in particular to a heating device and a cooking utensil. Background Art

[0002] For electric barbecue application scenarios, the main heating devices are basically different types of flat-plate electric heating devices or heating tubes or electric heating devices evolved on the basis of heating tubes.

[0003] In the related art, electric heating devices usually have a non-directional heat transfer, resulting in poor utilization of the heat generated by the electric heating devices, and their operating temperature is low and cannot meet the working requirements of high-temperature conditions. In addition, the manufacturing process of electric heating devices is complex and the production cost is high. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a heating device, the manufacturing process of the heating device is simple and the working temperature is high.

[0005] A heating device for a cooking utensil, comprising: a panel having a heating surface and a heating surface opposite to each other; a heating sheet, the heating sheet being arranged on one side of the heating surface of the panel and being suitable for heating the heating surface so as to generate heat from the heating surface; and a heat insulating layer, the heat insulating layer being arranged on a side of the heating sheet away from the panel; wherein the thickness of the heating sheet is less than or equal to 0.5 mm.

[0006] According to the heating device of the utility model, a panel is arranged above the heating sheet, and the panel, the heating sheet and the heat insulation layer are stacked to construct the heating device into a flat plate shape, thereby effectively simplifying the manufacturing process of the heating device and reducing the production cost of the heating device. A heat insulation layer is arranged on the side of the heating sheet away from the panel to improve the one-way heat transfer effect of the heating sheet and the heating effect of the heating device. In addition, by making the thickness of the heating sheet less than or equal to 0.5 mm, the resistance of the heating sheet is increased, the heating capacity of the heating sheet is improved, and the operating temperature of the heating device is increased. At the same time, the space occupied by the heating sheet can be reduced, which is conducive to reducing the overall thickness of the heating device and realizing a miniaturized design of the heating device.

[0007] According to some embodiments of the present invention, the raw material of the heating sheet includes natural graphite; or artificial graphite; or graphene.

[0008] A heating device has a simple manufacturing process and a high operating temperature.

[0009] According to the heating device of the utility model, the heating device includes: a panel, the panel has a relative heating surface and a heating surface; a heating sheet, the heating sheet is arranged on the heating surface side of the panel and is suitable for heating the heating surface to make the heating surface generate heat; a heat insulation layer, the heat insulation layer is arranged on the side of the heating sheet away from the panel; wherein the raw material of the heating sheet includes natural graphite; or artificial graphite; or graphene.

[0010] According to the heating device of the utility model, a panel is arranged above the heating sheet, and the panel, the heating sheet and the heat insulating layer are stacked to construct the heating device into a flat plate shape, thereby effectively simplifying the manufacturing process of the heating device and reducing the production cost of the heating device. A heat insulating layer is arranged on the side of the heating sheet away from the panel to improve the one-way heat transfer effect of the heating sheet and the heating effect of the heating device. In addition, the raw materials of the heating sheet are designed to improve the heating capacity of the heating sheet and the operating temperature of the heating device.

[0011] According to some embodiments of the present invention, the thickness of the heating sheet is less than or equal to 0.5 mm.

[0012] According to some embodiments of the utility model, the heating device further comprises: a frame, the frame is provided with a mounting groove, and the panel, the heating sheet and the heat insulation layer are arranged in the mounting groove.

[0013] According to some embodiments of the utility model, the heating device also includes a support member, which is arranged on a side of the thermal insulation layer away from the heating sheet, and the support member is connected to the panel, the heating sheet and the thermal insulation layer, and is used to support the panel, the heating sheet and the thermal insulation layer.

[0014] According to some embodiments of the present invention, the thickness of the heating device is less than 20 mm.

[0015] According to some embodiments of the utility model, the heating surface has a plurality of heating areas, and a plurality of heating sheets are provided. On the projection surface in the first direction, at least one heating sheet is correspondingly arranged in each heating area.

[0016] According to some embodiments of the present invention, the distance between the edge of each heating area and the corresponding edge of the projection contour of the heating sheet is L, 5mm≤L≤20mm.

[0017] According to some embodiments of the utility model, the heating device further includes: a wiring terminal, which is disposed on the support member and electrically connected to the heating sheet.

[0018] According to some embodiments of the present invention, the panel is made of high temperature resistant and wear resistant material.

[0019] According to some embodiments of the utility model, the heating device further includes a high temperature resistant insulating layer, and the high temperature resistant insulating layer is sandwiched between the panel and the heating sheet.

[0020] Another object of the present invention is to provide a cooking utensil.

[0021] A cooking utensil comprises the above-mentioned heating device.

[0022] The cooking appliance has the same advantages as the above-mentioned heating device, which will not be described in detail here.

[0023] According to some embodiments of the present invention, the cooking utensil includes a shell having an installation cavity formed therein, the heating device is disposed in the installation cavity, and the heating device and the shell define a cooking cavity, and the heating surface is arranged opposite to the cooking cavity.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a cross-sectional view of the heating device according to an embodiment of the utility model;

[0027] Figure 2 It is an exploded diagram of the heating device according to an embodiment of the utility model;

[0028] Figure 3 A bottom view of the heating device according to an embodiment of the utility model;

[0029] Figure 4 A top view of the heating device according to an embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the assembly of the support member and the connection terminal according to an embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the heating sheet according to an embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of the assembly of the heating plate, the heat insulating layer and the supporting member described in the embodiment of the utility model.

[0033] Reference numerals:

[0034] Heating device 100,

[0035] Panel 110, heating surface 111, heating area 1111, heating surface 112,

[0036] Heating sheet 120,

[0037] Insulation layer 130,

[0038] Frame 140, mounting groove 141,

[0039] Support member 150, flange 151, assembly groove 152,

[0040] The connection terminal 160 , the via 170 , and the conductive connection member 180 . DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present utility model, it should be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Reference below Figure 1-Figure 7 A heat generating device 100 according to an embodiment of the present invention is described.

[0045] Combination Figure 1 and Figure 2According to the heating device 100 of the utility model, it is used for a cooking utensil, and the heating device 100 includes: a panel 110, the panel 110 has a heating surface 111 and a heating surface 112 opposite to each other; a heating sheet 120, the heating sheet 120 is arranged on one side of the heating surface 112 of the panel 110, and is suitable for heating the heating surface 112 to make the heating surface 111 generate heat; a heat insulation layer 130, the heat insulation layer 130 is arranged on the side of the heating sheet 120 away from the panel 110, so as to improve the one-way heat transfer effect of the heating sheet 120; wherein the thickness of the heating sheet 120 is less than or equal to 0.5 mm.

[0046] The heating device 100 can generate heat so that the cooking appliance can cook food.

[0047] Specifically, the heating device 100 is constructed in a flat plate shape, and the panel 110, the heating sheet 120 and the insulation layer 130 are stacked in sequence from top to bottom to effectively simplify the assembly and manufacturing of the heating device 100 and reduce the production cost of the heating device 100. The heating sheet 120 is sandwiched between the panel 110 and the insulation layer 130. The heating sheet 120 can generate heat, and the heat is transferred to the heating surface 111 through the heating surface 112 to heat the heating surface 111. The heating surface 111 can transfer heat to the outside to cook food.

[0048] Furthermore, the heat insulating layer 130 is arranged on the side of the heating sheet 120 away from the panel 110, so as to insulate the heating sheet 120 on the side away from the panel 110, prevent the heat from being lost from the side of the heating sheet 120 away from the panel 110, and ensure that the working temperature of the heating sheet 120 can be above 500° C. for a long time, so that the temperature of the heat conducting surface of the heating device 100 (that is, the heating surface 111 of the panel 110) can be above 450° C. for a long time, and the heat conducting surface of the heating device 100 and the non-heat conducting surface of the heating device 100 are not affected by the heat. The temperature difference between the two surfaces (i.e., the surface of the heating device 100 facing away from the heat-conducting surface) can be as high as 300°C or more, thereby improving the effect of the heating sheet 120 in transferring heat to the panel 110, that is, improving the one-way heat transfer effect of the heating sheet 120, which is beneficial to increase the temperature of the heating surface 111 of the panel 110 and improve the cooking efficiency of the heating device 100 for food. In addition, since the heat-conducting surface of the heating device 100 can reach more than 450°C, stains such as oil on the heat-conducting surface can be vaporized at high temperature, thereby realizing the high-temperature self-cleaning function of the heating device 100.

[0049] Among them, the size of the heating sheet 120 in the up and down directions is defined as the thickness H1 of the heating sheet 120, H1≤0.5mm, so as to increase the resistance of the heating sheet 120 and improve the heating capacity of the heating sheet 120. In addition, the thickness of the heating sheet 120 is small, so that the heating sheet 120 occupies a small space, which is conducive to reducing the overall thickness of the heating device 100 and realizing the miniaturized design of the heating device 100.

[0050] In the related art, electric heating devices usually have a non-directional heat transfer, resulting in poor utilization of the heat generated by the electric heating devices, and their operating temperature is low and cannot meet the working requirements of high-temperature conditions. In addition, the manufacturing process of electric heating devices is complex and the production cost is high.

[0051] The present application sets a panel 110 on the heating sheet 120, and by stacking the panel 110, the heating sheet 120 and the heat insulating layer 130, the heating device 100 can be constructed into a flat plate shape without special processes or special equipment, thereby effectively simplifying the manufacturing process of the heating device 100 and reducing the production cost of the heating device 100. By setting the heat insulating layer 130 on the side of the heating sheet 120 away from the panel 110, the one-way heat transfer effect of the heating sheet 120 is improved, and the utilization rate of the heat generated by the heating sheet 120 is improved. In addition, by making the thickness of the heating sheet 120 less than or equal to 0.5 mm, the resistance of the heating sheet 120 is increased, and the heating capacity of the heating sheet 120 is improved. In addition, the heating sheet 120 occupies a small space, which is conducive to reducing the overall thickness of the heating device 100 and realizing the miniaturized design of the heating device 100.

[0052] According to the heating device 100 of the present invention, by arranging the panel 110 above the heating sheet 120, and making the panel 110, the heating sheet 120 and the heat insulation layer 130 overlap to construct the heating device 100 into a flat plate shape, the manufacturing process of the heating device 100 is effectively simplified and the production cost of the heating device 100 is reduced. By arranging the heat insulation layer 130 on the side of the heating sheet 120 away from the panel 110, the one-way heat transfer effect of the heating sheet 120 is improved, and the heating effect of the heating device 100 is improved. In addition, by making the thickness of the heating sheet 120 less than or equal to 0.5 mm, the resistance of the heating sheet 120 is increased, the heating capacity of the heating sheet 120 is improved, and the operating temperature of the heating device 100 is increased. At the same time, the space occupied by the heating sheet 120 can be reduced, which is conducive to reducing the overall thickness of the heating device 100 and realizing the miniaturized design of the heating device 100.

[0053] The material of the heat insulation layer 130 can be configured as heat insulation cotton.

[0054] In some embodiments of the present invention, the raw material of the heating sheet 120 includes natural graphite; or artificial graphite; or graphene.

[0055] Specifically, the heating sheet 120 can be configured as one of natural graphite diaphragms, artificial graphite diaphragms, or graphene diaphragms. The natural graphite diaphragms, artificial graphite diaphragms, and graphene diaphragms have high electrothermal conversion efficiency, so as to improve the electrothermal conversion efficiency of the heating sheet 120, so that the electrothermal conversion efficiency of the heating sheet 120 is as high as more than 90%, thereby improving the heating capacity of the heating sheet 120, and further improving the heating capacity of the heating device 100.

[0056] According to the heating device of the utility model, the heating device 100 includes: a panel 110, the panel 110 has a heating surface 111 and a heating surface 112 relative to each other; a heating sheet 120, the heating sheet 120 is arranged on the side of the heating surface 112 of the panel 110, and is suitable for heating the heating surface 112 to make the heating surface 111 generate heat; a heat insulation layer 130, the heat insulation layer 130 is arranged on the side of the heating sheet 120 away from the panel 110 to improve the one-way heat transfer effect of the heating sheet 120; wherein the raw materials of the heating sheet 120 include natural graphite; or artificial graphite; or graphene.

[0057] The heating device 100 is constructed in a flat plate shape, and the panel 110, the heating sheet 120 and the insulation layer 130 are stacked in sequence from top to bottom to effectively simplify the assembly and manufacturing of the heating device 100 and reduce the production cost of the heating device 100. The heating sheet 120 is sandwiched between the panel 110 and the insulation layer 130. The heating sheet 120 can generate heat, and the heat is transferred to the heating surface 111 through the heating surface 112 to heat the heating surface 111. The heating surface 111 can transfer heat to the outside to cook food.

[0058] Furthermore, the heat insulating layer 130 is arranged on the side of the heating sheet 120 away from the panel 110, so as to insulate the heating sheet 120 on the side away from the panel 110, prevent the heat from being lost from the side of the heating sheet 120 away from the panel 110, and ensure that the working temperature of the heating sheet 120 can be above 500° C. for a long time, so that the temperature of the heat conducting surface of the heating device 100 (that is, the heating surface 111 of the panel 110) can be above 450° C. for a long time, and the heat conducting surface of the heating device 100 and the non-heat conducting surface of the heating device 100 are not affected by the heat. The temperature difference between the two surfaces (i.e., the surface of the heating device 100 facing away from the heat-conducting surface) can be as high as 300°C or more, thereby improving the effect of the heating sheet 120 in transferring heat to the panel 110, that is, improving the one-way heat transfer effect of the heating sheet 120, which is beneficial to increase the temperature of the heating surface 111 of the panel 110 and improve the cooking efficiency of the heating device 100 for food. In addition, since the heat-conducting surface of the heating device 100 can reach more than 450°C, stains such as oil on the heat-conducting surface can be vaporized at high temperature, thereby realizing the high-temperature self-cleaning function of the heating device 100.

[0059] Among them, the heating sheet 120 can be configured as one of natural graphite diaphragms, artificial graphite diaphragms or graphene diaphragms. The natural graphite diaphragms, artificial graphite diaphragms and graphene diaphragms have high electrothermal conversion efficiency, so as to improve the electrothermal conversion efficiency of the heating sheet 120, so that the electrothermal conversion efficiency of the heating sheet 120 is as high as more than 90%, thereby improving the heating capacity of the heating sheet 120, and further improving the heating capacity of the heating device 100.

[0060] According to the heating device 100 of the present invention, by arranging a panel 110 above the heating sheet 120, and making the panel 110, the heating sheet 120 and the heat insulating layer 130 overlap to construct the heating device 100 into a flat plate shape, the manufacturing process of the heating device 100 is effectively simplified and the production cost of the heating device 100 is reduced. By arranging the heat insulating layer 130 on the side of the heating sheet 120 away from the panel 110, the one-way heat transfer effect of the heating sheet 120 is improved, and the heating effect of the heating device 100 is improved. In addition, by designing the raw materials of the heating sheet 120, the heating capacity of the heating sheet 120 is improved, and the working temperature of the heating device 100 is increased.

[0061] Reference Figure 1 According to some embodiments of the present invention, the thickness of the heating sheet 120 is less than or equal to 0.5 mm.

[0062] The size of the heating sheet 120 in the up and down directions is defined as the thickness H1 of the heating sheet 120, H1≤0.5mm, so as to increase the resistance of the heating sheet 120 and improve the heating capacity of the heating sheet 120. The thickness of the heating sheet 120 is small, so that the heating sheet 120 occupies a small space, which is conducive to reducing the overall thickness of the heating device 100 and realizing the miniaturized design of the heating device 100.

[0063] Combination Figure 2 , Figure 6 and Figure 7 In some embodiments of the present invention, the projection surface of the heating sheet 120 in the first direction can extend in a serpentine shape to increase the resistance of the heating sheet 120 and improve the heating capacity of the heating sheet 120. Of course, it can be understood that the heating sheet 120 can also be constructed into other shapes. As long as the resistance of the heating sheet 120 can meet the heating capacity requirements of the heating sheet 120, the specific shape of the heating sheet 120 is not limited here.

[0064] It should be noted that the “first direction” refers to the thickness direction of the heating device 100, which can also be understood as the up and down direction. For specific directions, please refer to Figure 1 shown.

[0065] Combination Figure 1 and Figure 2In some embodiments of the present invention, the heating device 100 further includes: a frame 140 , the frame 140 is provided with a mounting groove 141 , and the panel 110 , the heating sheet 120 and the insulation layer 130 are arranged in the mounting groove 141 .

[0066] Specifically, the frame 140 is provided with a mounting groove 141, the inner side of the mounting groove 141 is open and formed with an opening, the panel 110, the heating sheet 120, the thermal insulation layer 130 and the support member 150 are stacked and pressed layer by layer in an assembly order from top to bottom, and can be installed in the frame 140 through the opening after pressing, the frame 140 can fix the panel 110, the heating sheet 120 and the thermal insulation layer 130, and the frame 140 is arranged to protect the outer edges of the panel 110, the heating sheet 120 and the thermal insulation layer 130 to prevent the heating device 100 from being damaged due to the outer edges of the heating device 100 being hit by external force during the process of assembling the heating device 100 to the cooking appliance.

[0067] Combination Figure 1 and Figure 2 In some embodiments of the utility model, the heating device 100 also includes a support member 150, which is arranged on the side of the thermal insulation layer 130 away from the heating plate, and the support member 150 is used to be connected to the panel 110, the heating plate 120 and the thermal insulation layer 130, and the support member 150 is used to support the panel 110, the heating plate 120 and the thermal insulation layer 130.

[0068] Specifically, the panel 110, the heating sheet 120 and the thermal insulation layer 130 are stacked and pressed in sequence from top to bottom, and the support member 150 is arranged below the thermal insulation layer 130. The support member 150 can support the panel 110, the heating sheet 120 and the thermal insulation layer 130. At the same time, the support member 150 can reflect heat to reflect the heat of the side of the heating sheet 120 away from the panel 110 toward the side of the panel 110, thereby preventing the heating sheet 120 from generating heat loss on the side away from the panel 110, further improving the one-way heat transfer effect of the heating sheet 120, and at the same time, the support member 150 can provide protection at the bottom to reduce the risk of damage to the panel 110, the heating sheet 120 and the thermal insulation layer 130.

[0069] Furthermore, the support member 150 can be connected to the panel 110, the heating sheet 120 and the insulation layer 130. For example, a connecting structure can be set on the support member 150 to fix the panel 110, the heating sheet 120 and the insulation layer 130, so that the heating device 100 does not need to be separately provided with a connecting member, which effectively simplifies the structure of the heating device 100 and facilitates the processing and production of the heating device 100.

[0070] Combination Figures 1 to 3In some embodiments of the present invention, the panel 110, the heating sheet 120, the insulation layer 130 and the support member 150 are assembled in sequence and inserted into the mounting groove 141, and the frame 140 is suitable for clamping and fixing the insulation layer 130, the heating sheet 120, the panel 110 and the support member 150.

[0071] Specifically, the panel 110, the heating sheet 120, the thermal insulation layer 130 and the support member 150 are stacked and pressed layer by layer in an assembly order from top to bottom, and then the assembly can be plugged into the mounting groove 141, and the frame 140 can clamp and fix the four at the outer edges of the panel 110, the heating sheet 120, the thermal insulation layer 130 and the support member 150, wherein the support member 150 can be configured as a plate structure that is only used to support the panel 110, the heating sheet 120 and the thermal insulation layer 130, which effectively simplifies the processing of the support member 150, and is beneficial to reducing the assembly accuracy of the heating device 100, effectively improving the assembly convenience of the heating device 100, and is beneficial to improving the production assembly efficiency of the heating device 100.

[0072] Among them, the frame 140 can be set to be multiple. After the panel 110, the heating sheet 120, the insulation layer 130 and the support member 150 are stacked and pressed layer by layer in an assembly order from bottom to top, one of the multiple frames 140 first clamps the panel 110, the heating sheet 120, the insulation layer 130 and the support member 150, and then the remaining frames 140 can clamp the panel 110, the heating sheet 120, the insulation layer 130 and the support member 150 in a circumferential direction, and the heads and tails of the multiple frames 140 can be connected in sequence to improve the assembly reliability of the heating device 100.

[0073] Combination Figure 2 , Figure 4 and Figure 5 In some embodiments of the utility model, a flange 151 is provided on the outer periphery of the support member 150, and the flange 151 extends along the first direction from a position connected to the support member 150. The flange 151 and the support member 150 jointly define an assembly groove 152. The panel 110, the heating sheet 120 and the insulation layer 130 can be arranged in the assembly groove 152 to facilitate the positioning and installation of the panel 110, the heating sheet 120, the insulation layer 130 and the support member 150.

[0074] Furthermore, when the panel 110, the heating sheet 120 and the thermal insulation layer 130 are arranged in the assembly groove 152, the flange 151 surrounds the outer edge of the panel 110, the heating sheet 120 and the thermal insulation layer 130 in the circumferential direction. The flange 151 can limit the panel 110, the heating sheet 120 and the thermal insulation layer 130 in the circumferential direction to prevent the panel 110, the heating sheet 120 and the thermal insulation layer 130 from detaching from the support member 150.

[0075] In addition, the flange 151 can keep the heat-generating sheet 120 warm in the circumferential direction, further preventing heat loss and improving heat utilization.

[0076] Reference Figure 1 In some embodiments of the present invention, the thickness of the heating device 100 is less than 20 mm.

[0077] Specifically, the size of the heating device 100 in the first direction is defined as the thickness H2 of the heating device 100, and the thickness H2 of the heating device 100 is less than 20 mm, so that the heating device 100 is light and thin, which is conducive to realizing the miniaturized design of the heating device 100 and reducing the occupied space required for arranging the heating device 100.

[0078] In some embodiments of the present invention, the heating surface 111 has a plurality of heating areas 1111 , and a plurality of heating sheets 120 are provided. On the projection surface in the first direction, at least one heating sheet 120 is correspondingly arranged in each heating area 1111 .

[0079] Specifically, since the cooking requirements of different ingredients may be different, multiple heating areas 1111 can be set on the heating surface 111, and the heating effect of each heating area 1111 can be different, so that the function of zoned heating of the heating device 100 can be realized and the functionality of the heating device 100 can be improved.

[0080] Furthermore, on the projection surface of the first direction, at least one heating sheet 120 is correspondingly arranged in each heating area 1111 to ensure that each heating area 1111 can generate heat. Optionally, the heating capacity of each heating sheet 120 can be configured to be the same, and the number of heating sheets 120 arranged in the heating area 1111 with high heating capacity requirements is relatively large, and the number of heating sheets 120 arranged in the heating area 1111 with low heating capacity requirements is relatively small, thereby achieving different heating effects in different heating areas 1111; the heating capacity of each heating sheet 120 can be configured to be different, and heating sheets 120 with different heating capacities are arranged accordingly according to the heating capacity requirements of different heating areas 1111, thereby achieving different heating effects in different heating areas 1111 and realizing the zoned heating function of the heating device 100.

[0081] In other embodiments of the present invention, a heating area 1111 is provided on the heating surface 111, and correspondingly, a heating sheet 120 can be provided, and the heating sheet 120 is arranged corresponding to the heating area 1111 to facilitate the production and assembly of the heating device 100 and improve the production efficiency of the heating device 100.

[0082] It is understandable that the number of heating areas 1111 and heating sheets 120 can be determined according to the actual functional requirements of the heating device 100 and is not specifically limited here.

[0083] In some embodiments of the present invention, the distance between the edge of each heating area 1111 and the edge of the projection contour of the corresponding heating sheet 120 is L, 5mm≤L≤20mm.

[0084] Specifically, the projection area of ​​the heating sheet 120 in the first direction is smaller than the projection area of ​​the heating area 1111 in the first direction, and the edge of each heating area 1111 is spaced apart from the projection contour edge of the heating sheet 120, and the distance between the edge of each heating area 1111 and the projection contour edge of the corresponding heating sheet 120 is L, 5mm≤L≤20mm.

[0085] Among them, L≥5mm can effectively prevent the heat generated by the heating plate 120 from escaping from its edges, and when the outer edges of the panel 110, the heating plate 120 and the insulation layer 130 are provided with a frame 140, L≥5mm can prevent the distance between the heating plate 120 and the frame 140 from being too close, causing the frame 140 to be damaged by high temperature; L≤20mm can prevent the heat of the heating plate 120 from being unable to be transferred to the edge of the heating area 1111 due to the outer edge of the heating plate 120 being too far from the edge of the heating area 1111, and prevent a large temperature difference from being generated in the heating area 1111, resulting in poor heating effect.

[0086] Therefore, by ensuring that 5mm≤L≤20mm, the heat generated by the heating plate 120 can be effectively prevented from escaping, thereby improving the heat utilization rate. At the same time, the heat transfer effect on the heating area 1111 is guaranteed, the temperature of the heating area 1111 is guaranteed to be uniform, and the heating effect of the heating device 100 is improved.

[0087] Combination Figures 1 to 3 as well as Figure 5 In some embodiments of the present invention, the heating device 100 further includes: a connection terminal 160 , which is disposed on the support member 150 and electrically connected to the heating sheet 120 .

[0088] Specifically, the support member 150 is used to support the panel 110, the heating sheet 120 and the insulation layer 130, and at the same time provide an installation position for the wiring terminal 160 to facilitate the installation of the wiring terminal 160. The wiring terminal 160 is arranged on the support member 150 and can be electrically connected to the heating sheet 120. At the same time, the wiring terminal 160 can be electrically connected to an external power supply, so that the heating sheet 120 can be energized, and the heating sheet 120 after being energized can generate heat to realize the heating function of the heating device 100 after being energized. The user can control the heating of the heating sheet 120 according to usage requirements.

[0089] Among them, refer to Figure 1 The terminal 160 is electrically connected to the heating sheet 120 through a conductive connector 170 disposed on the heating sheet 120. The conductive connector 170 can extend downward along a first direction from the side of the heating sheet 120 away from the panel 110. A via 170 is disposed on the support member 150. The via 170 is adjacent to and opposite to the terminal 160. The conductive connector 170 can extend out of the support member 150 through the via 170 and be electrically connected to the terminal 160 disposed on the support member 150.

[0090] In other embodiments of the utility model, the connecting terminal 160 can be arranged on the frame 140 and located on the side of the frame 140 away from the mounting groove 141. The connecting terminal 160 and the heating plate 120 are electrically connected through a conductive member. The conductive member can extend from a side wall of the heating plate 120 opposite to the frame 140 in the direction of the frame 140. A hole structure is provided on the frame 140. The hole structure is adjacent to and opposite to the connecting terminal 160. The conductive member can extend out of the frame 140 through the via 170 and be electrically connected to the connecting terminal 160 provided on the frame 140.

[0091] Optionally, the connection terminal 160 may be configured as a sheet-type terminal or an embedded pin-type terminal with better sealing performance. The specific type of the connection terminal 160 may be determined according to actual requirements and production costs, and is not specifically limited here.

[0092] In some embodiments of the present invention, the panel 110 is made of high temperature resistant and wear resistant material.

[0093] For example, the panel 110 can be made of high temperature and wear-resistant materials such as microcrystalline glass, high borosilicate glass or quartz glass, and the heating surface 111 and the heating surface 112 of the panel 110 are flat and smooth, which is convenient for the user to wipe and clean, and can effectively reduce the risk of damage to the heating device 100 due to wear of the panel 110.

[0094] Furthermore, the thickness dimension of the panel 110 in the first direction is 1mm<H3<10mm, so that the panel 110 has the ability to store heat and keep warm. When heat is transferred to the panel 110, the panel 110 can maintain a certain temperature and heat, reduce the efficiency of heat loss, and prevent the panel 110 from being too thin and causing insufficient strength, or too thick and causing high production costs of the panel 110. Preferably, H3 is 4mm.

[0095] In some embodiments of the present invention, the heating device 100 further includes a high temperature resistant insulating layer, which is sandwiched between the panel 120 and the heating sheet 120 .

[0096] Specifically, a high temperature resistant insulating layer is arranged between the panel 120 and the heating plate 120, and the high temperature resistant insulating layer can effectively prevent voltage breakdown and leakage problems under high temperature, improve the overall high temperature insulation of the heating device 100, and help improve the safety of the heating device 100.

[0097] Among them, the high temperature resistant insulating layer can be configured as a mica sheet.

[0098] The cooking appliance according to the present invention comprises the heating device 100 mentioned above.

[0099] Since the cooking appliance is provided with the above-mentioned heating device 100, by arranging the panel 110 above the heating sheet 120, and making the panel 110, the heating sheet 120 and the heat insulation layer 130 overlap to construct the heating device 100 into a flat plate shape, the manufacturing process of the heating device 100 is effectively simplified and the production cost of the heating device 100 is reduced. By arranging the heat insulation layer 130 on the side of the heating sheet 120 away from the panel 110, the one-way heat transfer effect of the heating sheet 120 is improved, and the heating effect of the heating device 100 is improved. In addition, by designing the heating sheet 120, the heating capacity of the heating sheet 120 is improved, and the working temperature of the heating device 100 is increased. At the same time, the occupied space of the heating sheet 120 can be reduced, which is conducive to reducing the overall thickness of the heating device 100 and realizing the miniaturized design of the heating device 100.

[0100] In some embodiments of the present invention, the cooking appliance includes a shell with an installation cavity formed therein. The heating device 100 is disposed in the installation cavity, and the heating device 100 and the shell define a cooking cavity. The heating surface 111 is disposed opposite to the cooking cavity.

[0101] Specifically, an installation cavity is formed in the shell, and the installation cavity can be used to set the heating device 100 and other components in the cooking appliance, wherein the heating device 100 is constructed in a flat plate shape. When the heating device 100 is set in the installation cavity, the panel 110 and the shell together define the cooking cavity. The heating surface 111 of the panel 110 is adjacent to and opposite to the cooking cavity. The heat generated by the heating sheet 120 can be directly transferred to the cooking cavity through the heating surface 111 to cook the food, effectively improving the cooking efficiency and cooking effect of the cooking appliance.

[0102] Optionally, the heating device 100 can be arranged on the bottom plate of the outer shell, and the panel 110 can define a cooking cavity for placing food together with the top plate and side plates of the outer shell. The food can be placed on the panel 110 and in direct contact with the heating surface 111. The panel 110 can support the food while the heating surface 111 can be in contact with the food to further improve the efficiency of heat transfer to the food.

[0103] Of course, it is understandable that the heating device 100 can be arranged on the top plate or the side plate of the shell. The specific arrangement of the heating device 100 can be determined according to the actual production requirements of the heating device 100 and is not specifically limited here.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0105] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heating device, characterized in that: For a cooking utensil, the heating device comprises: A panel having a heat generating surface and a heat receiving surface opposite to each other; A heating sheet, which is arranged on one side of the heating surface of the panel and is suitable for heating the heating surface to make the heating surface generate heat; A heat insulation layer, the heat insulation layer is arranged on the side of the heating plate away from the panel; wherein The thickness of the heating sheet is less than or equal to 0.5 mm.

2. The heating device according to claim 1, characterized in that: The raw materials of the heating sheet include natural graphite; or artificial graphite; or graphene.

3. A heating device, characterized in that: The heating device comprises: A panel having a heat generating surface and a heat receiving surface opposite to each other; A heating sheet, which is arranged on one side of the heating surface of the panel and is suitable for heating the heating surface to make the heating surface generate heat; A heat insulation layer, the heat insulation layer is arranged on the side of the heating plate away from the panel; wherein The raw materials of the heating sheet include natural graphite; or artificial graphite; or graphene.

4. The heating device according to claim 3, characterized in that: The thickness of the heating sheet is less than or equal to 0.5 mm.

5. The heating device according to claim 1 or 3, characterized in that: Also includes: The frame is provided with a mounting groove, and the panel, the heating sheet and the heat insulation layer are arranged in the mounting groove.

6. The heating device according to claim 1 or 3, characterized in that: It also includes a support member, which is arranged on a side of the heat insulation layer away from the heating sheet, and is connected to the panel, the heating sheet and the heat insulation layer, and is used to support the panel, the heating sheet and the heat insulation layer.

7. The heating device according to claim 6, characterized in that: The thickness of the heating device is less than 20 mm.

8. The heating device according to claim 1 or 3, characterized in that: The heating surface is provided with a plurality of heating areas, and a plurality of heating sheets are provided. On the projection surface in the first direction, at least one heating sheet is correspondingly arranged in each heating area.

9. The heating device according to claim 8, characterized in that: The distance between the edge of each heating area and the corresponding edge of the projection contour of the heating sheet is L, 5mm≤L≤20mm.

10. The heating device according to claim 6, characterized in that: Also includes: A connection terminal is arranged on the support member and is electrically connected to the heating plate.

11. The heating device according to claim 1 or 3, characterized in that: The panel is made of high temperature resistant and wear resistant material.

12. The heating device according to claim 1 or 3, characterized in that: Also includes: A high temperature resistant insulating layer is sandwiched between the panel and the heating plate.

13. A cooking utensil, characterized in that: It comprises a heating device according to any one of claims 1-12.

14. The cooking appliance according to claim 13, characterized in that The cooking appliance comprises a shell, a mounting cavity is formed in the shell, the heating device is arranged in the mounting cavity, and the heating device and the shell define a cooking cavity, and the heating surface is arranged opposite to the cooking cavity.

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