Heating device

Abstract

The utility model provides a heating device, which comprises a mounting seat, a heating element, a heating element and a heating element, and is characterized in that the mounting seat is provided with wiring holes; the substrate is arranged on the mounting seat, the substrate and the mounting seat are enclosed to form a cavity, and the cavity is communicated with the wiring hole; the heating film is arranged on the substrate and located in the cavity; the first end of the power connection piece is electrically connected with the heating film, and the second end of the power connection piece is used for being connected with a power source through the wiring hole; the distance between the second end of the power connection piece and the substrate is smaller than or equal to the distance between the end, away from the substrate, of the wiring hole and the substrate, that is, the end, away from the substrate, of the power connection piece does not exceed the wiring hole, and therefore the number of parts, away from the substrate, of the heating device can be effectively reduced in the production and assembly process. The problem that the power connection piece deforms due to transfer or placement is solved, the rejection rate is reduced, and the production efficiency of the whole heating device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to life electric appliance technical field, specifically, relate to a heating device. BACKGROUND

[0002] At present, the electric rice cooker generally adopts the electric heating disc heating, namely the heat source is the electric heating disc, and the metal inner pot is heated through the heat conduction, and then the food is heated. Since the electric heating disc adopts the heat pipe heating, belongs to the linear heat source, and the problem of uneven heat transfer caused by concentrated heating exists.

[0003] The hot disc adopting the film heating in the related technology, namely the graphene heating film is evenly covered on the glass plate, has the characteristics of rapid heating and uniform heating, wherein the metal terminal is used to connect the graphene heating film through the terminal-to-terminal structure, however, the metal terminal is prone to deformation during the production and assembly process, resulting in high scrap rate and low production efficiency. UTILITARIAN CONTENT

[0004] The embodiment of the utility model aims at at least solving one of the technical problems existing in the prior art.

[0005] Therefore, the first aspect of the embodiment of the utility model provides a heating device.

[0006] Therefore, the first aspect of the embodiment of the utility model provides a heating device.

[0007] The heating device provided by the embodiment of the utility model comprises a mounting seat, a base plate, a heating film and an electric connection piece, specifically, the base plate is arranged on the mounting seat, and the base plate and the mounting seat enclose a cavity. The heating film is arranged on the base plate and located in the cavity. Optionally, the heating film comprises an electric heating film or a graphene heating film.

[0008] One end of the electric connection piece is electrically connected with the heating film, and the other end is connected with the power supply through the wiring hole, so as to realize the power-on of the heating film. It can be understood that the heating film can heat quickly under the condition of power-on, and the heat is transmitted to the inner pot through the base plate, and the food is heated through the inner pot.

[0009] Since the distance between the second end of the electrical connecting piece and the base plate is less than or equal to the distance between the end of the wiring hole away from the base plate and the base plate, that is, the spacing between the second end of the electrical connecting piece and the end of the wiring hole away from the base plate is greater than or equal to 0, that is, the end of the electrical connecting piece away from the base plate does not exceed the wiring hole, thereby effectively reducing the problem of deformation of the electrical connecting piece due to transfer or placement during production and assembly of the heating device, reducing the scrap rate, and thereby facilitating improvement of the production efficiency of the entire heating device.

[0010] In addition, the heating device provided in the above technical scheme of the utility model also has the following additional technical features.

[0011] In some technical solutions, the mounting seat is provided with a protective rib, the protective rib extends outwardly away from the cavity, and the protective rib is provided with a wiring hole.

[0012] In the technical solution, the mounting seat is provided with a protective rib, specifically, the protective rib extends outwardly away from the cavity, that is, the end of the protective rib away from the base plate extends outwardly.

[0013] Since the protective rib is provided with a wiring hole, that is, the end of the electrical connecting piece away from the base plate does not exceed the end of the protective rib away from the base plate, thereby reducing the problem of deformation of the electrical connecting piece due to transfer or placement during production and assembly of the heating device, facilitating improvement of the structural strength of the mounting seat, preventing deformation of the mounting seat during production and assembly, avoiding poor contact between the base plate and the inner pot due to deformation of the mounting seat, thereby preventing the local temperature of the heating film from exceeding the use temperature due to uneven heat transfer, facilitating extension of the service life of the heating film, and improving the reliability of the heating device.

[0014] In some technical solutions, the heating device further comprises a protective cover, the protective cover is connected to the base plate and located in the cavity, the protective cover is provided with a protective cavity, and at least a part of the electrical connecting piece is located in the protective cavity.

[0015] In the technical solution, the heating device further comprises a protective cover, specifically, the protective cover is connected to the base plate, and optionally, the protective cover is connected to the base plate by an adhesive.

[0016] Since at least part of the electrical connecting piece is located in the protective cavity, that is, the protective cover is located on the outer side of the electrical connecting piece, thereby providing protection for the electrical connecting piece, further reducing the problem of deformation of the electrical connecting piece due to transfer or placement during production and assembly of the heating device, reducing the scrap rate, and thereby facilitating improvement of the production efficiency of the entire heating device.

[0017] In some technical solutions, the mounting seat is a reflective member; or the inner wall of the cavity is provided with a reflective layer.

[0018] In the technical solution, the mounting seat is a reflective member, or the inner wall of the cavity is provided with a reflective layer. It can be understood that, since the heating film is located in the cavity and the heat generated by the heating film is transmitted to the inner pot through the substrate, by setting the mounting seat as a reflective member, or setting a reflective layer on the inner wall of the mounting seat, the heat emitted by the heating film towards the side away from the substrate can be reflected as much as possible to the side where the substrate is located, and then more heat is transmitted to the inner pot through the substrate, which is beneficial to improve the heating efficiency of the heating device and improve the heating effect.

[0019] In some technical solutions, optionally, the minimum distance between the power connection member and the outer edge of the substrate is greater than or equal to 5mm.

[0020] In the technical solution, the value range of the minimum distance between the power connection member and the outer edge of the substrate is defined, specifically, the minimum distance between the outer edge of the substrate and the power connection member is greater than or equal to 5mm, so as to ensure the electrical safety distance of the power connection member after installation, which is beneficial to improve the reliability and use safety of the heating device.

[0021] In some technical solutions, optionally, the heating device further comprises a heat insulation assembly, the heat insulation assembly is arranged in the cavity and located between the side away from the substrate of the heating film and the inner wall of the cavity; wherein the heating film comprises a plurality of heating sections, the plurality of heating sections are arranged at intervals, and at least one heating section is opposite to the heat insulation assembly in the thickness direction of the substrate.

[0022] In the technical solution, the heating device further comprises a heat insulation assembly, specifically, the heat insulation assembly is arranged in the cavity and located between the side away from the substrate of the heating film and the inner wall of the cavity.

[0023] It can be understood that, in the case of the heating film being a graphene heating film, the surface temperature can be as high as 400℃ when powered on, the heat generated is transmitted to the side of the substrate, and then transmitted to the inner pot through the substrate to heat the food in the inner pot. Since the heat insulation assembly is located on the side away from the substrate of the heating film, the heat emitted by the heating film away from the substrate is subjected to heat insulation treatment, the temperature rise between the heating film and the plastic bottom shell of the heating device and the power board is insulated, the heat generated by the heating film is prevented from scalding the plastic bottom shell and the power board to cause safety hazards, the basic performance of the heating device is ensured, and the reliability of the heating device is improved.

[0024] The heating film comprises a plurality of heating sections, specifically, the plurality of heating sections are arranged at intervals, at least one heating section is opposite to the heat insulation assembly in the thickness direction of the substrate, that is, the heating area formed by the heating film is opposite to the heat insulation assembly, so that the heat dissipated from the side of the heating film away from the substrate can be effectively insulated, the heat insulation effect of the heat insulation assembly on the heating film is improved, further preventing the heat generated by the heating film from scalding the plastic bottom shell and the power board to cause safety hazards, and the reliability of the heating device is improved.

[0025] Optionally, each heating section is electrically connected with the power connecting piece.

[0026] In some technical solutions, the power connecting piece is located at the outer periphery of the heat insulation assembly and has a spacing with the heat insulation assembly.

[0027] In this technical solution, it can be understood that the temperature measuring piece for measuring the temperature of the heating film is generally located in the hollow cavity of the heat insulation assembly. By arranging the power connecting piece at the outer periphery of the heat insulation assembly, the power connecting piece can be isolated from the structure such as the temperature measuring piece inside the heat insulation assembly, preventing interference between the power connecting piece and other structures due to shaking during transportation.

[0028] In addition, the heat insulation assembly generally comprises heat insulation cotton or aerogel. After the heating device works for a long time, the heat insulation cotton or aerogel will adsorb moisture in the air. If the heat insulation assembly directly contacts the power connecting piece, the surface of the power connecting piece will be wet, affecting the performance of the heating film. Since the power connecting piece maintains a certain spacing with the heat insulation assembly, the power connecting piece can be effectively isolated from other structures while ensuring that the surface of the power connecting piece remains dry during long-term use, thereby improving the reliability of the heating device.

[0029] In some technical solutions, the heat insulation assembly comprises a first heat insulation piece and a second heat insulation piece, wherein the first heat insulation piece is located between the second heat insulation piece and the heating film; the first heat insulation piece is a waterproof piece; and / or the second heat insulation piece is heat insulation cotton or an aerogel piece; and / or the thickness of the first heat insulation piece is greater than or equal to 0.5 mm and less than or equal to 4 mm; and / or the thickness of the heat insulation assembly is greater than or equal to 5 mm and less than or equal to 30 mm.

[0030] In this technical solution, the heat insulation assembly comprises a first heat insulation piece and a second heat insulation piece, specifically, the first heat insulation piece is located between the heating film and the second heat insulation piece, that is, two heat insulation pieces are arranged on the side of the heating film away from the substrate for combined heat insulation, which is beneficial to improve the heat insulation effect, so as to isolate the temperature rise between the heating film and the plastic bottom shell of the heating device and the power board, prevent the heat generated by the heating film from scalding the plastic bottom shell and the power board to cause safety hazards, ensure the basic performance of the heating device, and improve the reliability of the heating device.

[0031] The second heat insulation member is heat insulation cotton or aerogel, so as to effectively insulate the heat dissipated from the side of the heating film away from the substrate.

[0032] It can be understood that, due to the second heat insulation member being heat insulation cotton or aerogel, the second heat insulation member will adsorb moisture in the air after long-term work of the heating device. If the second heat insulation member directly contacts the heating film, or the first heat insulation member is not waterproof, the surface of the heating film will be wet, causing the resistance value of the heating film to increase and the heating power to decrease, which affects the heating performance of the product. In addition, in the case of the second heat insulation member being heat insulation cotton, the heat insulation cotton is generally prone to dust falling. If the second heat insulation member directly contacts the heating film, the dust falling from the heat insulation cotton will affect the insulation performance of the surface of the heating film and the accuracy of the temperature measurement of the heating film by the temperature measuring member.

[0033] Since the first heat insulation member is a waterproof member, that is, a waterproof member that does not absorb water is arranged between the second heat insulation member and the heating film, so as to avoid direct contact between the heating film and the second heat insulation member, thereby achieving the effect of heat insulation while keeping the surface of the heating film dry, improving the accuracy of the temperature measurement of the heating film, and further improving the performance of the product.

[0034] The thickness of the first heat insulation member is between 0.5mm and 4mm, so as to ensure the heat insulation effect while facilitating the thinning of the heating device.

[0035] The thickness of the heat insulation assembly is between 5mm and 30mm, so as to ensure the heat insulation effect while facilitating the thinning of the heating device.

[0036] In some technical solutions, the mounting seat comprises a seat body and a mounting portion, wherein the seat body is provided with a wiring hole, the mounting portion is connected with the seat body, the mounting portion is provided with a mounting groove, the outer peripheral end of the substrate is arranged in the mounting groove, and the outer peripheral end of the substrate and the seat body form a cavity; at least one of the seat body and the mounting portion is provided with a reinforcing rib.

[0037] In this technical solution, the mounting seat comprises a seat body and a mounting portion, specifically, the mounting portion is provided with a mounting groove, and the outer peripheral end of the substrate is arranged in the mounting groove, so as to realize the assembly between the substrate and the mounting seat. Since the outer peripheral end of the substrate is embedded in the mounting groove, it is beneficial to reduce the thickness of the whole heating device and realize the thinning of the product.

[0038] The seat body is provided with a reinforcing rib. Alternatively, the mounting portion is provided with a reinforcing rib. Alternatively, the seat body and the mounting portion are respectively provided with reinforcing ribs. The reinforcing ribs can be arranged according to actual needs.

[0039] By arranging the reinforcing ribs on the seat body and / or the mounting portion, the structural strength of the seat body and / or the mounting portion can be improved, so that the deformation of the seat body and / or the mounting portion during production and assembly can be avoided, and the poor contact between the base plate and the inner pot after assembly can be avoided. It can be understood that when the contact between the base plate and the inner pot is poor, the heat generated by the heating film cannot be quickly transferred to the inner pot and the food, and the heat will form heat accumulation on the microcrystalline glass (base plate), thereby causing abnormal film temperature of the heating film, especially in the case of a graphene heating film, when the film temperature exceeds 400℃, the graphene component in the graphene heating film will react with oxygen in the air to cause oxidation, thereby increasing the resistance of the graphene heating film and reducing the heating power of the product, affecting the cooking performance of the product.

[0040] By arranging the reinforcing ribs on the seat body and / or the mounting portion, the structural strength of the seat body and / or the mounting portion can be improved, so that the deformation of the seat body and / or the mounting portion during production and assembly can be avoided, and the poor contact between the base plate and the inner pot after assembly can be avoided. It can be understood that when the contact between the base plate and the inner pot is poor, the heat generated by the heating film cannot be quickly transferred to the inner pot and the food, and the heat will form heat accumulation on the microcrystalline glass (base plate), thereby causing abnormal film temperature of the heating film, especially in the case of a graphene heating film, when the film temperature exceeds 400℃, the graphene component in the graphene heating film will react with oxygen in the air to cause oxidation, thereby increasing the resistance of the graphene heating film and reducing the heating power of the product, affecting the cooking performance of the product.

[0041] In some technical solutions, the heating device further comprises a sealing member, which is arranged between the outer peripheral end of the base plate and the groove wall of the mounting groove.

[0042] In this technical solution, the heating device further comprises a sealing member, which is arranged between the outer peripheral end of the base plate and the groove wall of the mounting groove, thereby sealing the gap between the base plate and the mounting portion, and avoiding the moisture in the cavity from affecting the performance of the heating film.

[0043] In addition, since the sealing member is wrapped around the outer peripheral end of the base plate, and the base plate is generally a glass plate, the sealing member can also protect the base plate from being damaged by contact with hard objects during production and assembly.

[0044] In some technical solutions, the side of the base plate away from the heating film is lower than the side of the mounting portion away from the seat body in the thickness direction of the base plate.

[0045] In this technical solution, since the sealing member is arranged between the outer peripheral end of the base plate and the groove wall of the mounting groove, and the side of the base plate away from the heating film is lower than the side of the mounting portion away from the seat body, that is, the top surface of the base plate is lower than the top surface of the mounting portion, thereby reserving installation space for the sealing member, and the sealing effect between the base plate and the mounting portion is improved.

[0046] In some technical solutions, the heating device further comprises an outer pot assembly and an inner pot, wherein the outer pot assembly is located on the side of the base plate away from the heating film and connected to the mounting seat, the outer pot assembly and the base plate enclose a containing cavity, and the inner pot is arranged in the containing cavity in a removable manner.

[0047] In this technical solution, the heating device is further defined as including an outer pot assembly and an inner pot. Specifically, the outer pot assembly is located on the side of the substrate away from the heating film, and the outer pot assembly is connected to the mounting base and assembled into a modular assembly, which is conducive to further improving the production efficiency of the heating device.

[0048] The outer pot assembly and the base plate enclose a receiving cavity, and the inner pot is removably placed inside the receiving cavity. It can be understood that the inner pot has a cooking cavity for holding food. The bottom outer side of the inner pot is the heating surface. The heat generated by the heating film is transferred to the heating surface through the base plate, and then transferred to the food in the cooking cavity through the inner pot to heat and cook the food.

[0049] Additional aspects and advantages of the present invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0050] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0051] Figure 1 One of the partial exploded views of a heating device according to an embodiment of the present invention is shown;

[0052] Figure 2 A second partial exploded view of a heating device according to an embodiment of the present invention is shown;

[0053] Figure 3 One of the partial structural schematic diagrams of a heating device according to an embodiment of the present invention is shown;

[0054] Figure 4 A second partial structural schematic diagram of a heating device according to an embodiment of the present invention is shown;

[0055] Figure 5 A third partial structural schematic diagram of a heating device according to an embodiment of the present invention is shown;

[0056] Figure 6 A fourth partial structural schematic diagram of a heating device according to an embodiment of the present invention is shown;

[0057] Figure 7 A third partial exploded view of a heating device according to an embodiment of the present invention is shown;

[0058] Figure 8 Fifth of the schematic diagrams shows a partial structure of a heating device according to an embodiment of the present invention;

[0059] Figure 9 Fig. 6 shows a partial structure schematic view of the heating device according to one embodiment of the present application;

[0060] Figure 10 Fig. 7 shows a partial structure schematic view of the heating device according to one embodiment of the present application;

[0061] Figure 11 Fig. 8 shows a partial structure schematic view of the heating device according to one embodiment of the present application;

[0062] Figure 12 Fig. 9 shows a partial structure schematic view of the heating device according to one embodiment of the present application;

[0063] Figure 13 Fig. 1 shows a structure schematic view of the heating device according to one embodiment of the present application;

[0064] Figure 14 Fig. 2 shows a structure schematic view of the heating device according to one embodiment of the present application;

[0065] Figure 15 Fig. 3 shows a structure schematic view of the heating device according to one embodiment of the present application;

[0066] Figure 16 Fig. 4 shows a structure schematic view of the heating device according to one embodiment of the present application.

[0067] Corresponding relationship between the reference signs and the component names is as follows: Figures 1 to 16 Corresponding relationship between the reference signs and the component names is as follows:

[0068] 100 heating device, 110 mounting seat, 111 wiring hole, 112 protective rib, 113 seat body, 114 mounting part, 115 mounting groove, 116 second positioning part, 120 base plate, 130 cavity, 140 heating film, 142 heating section, 150 power connection piece, 151 first end, 152 second end, 160 protective cover, 161 protective cavity, 170 heat insulation assembly, 171 avoiding cavity, 172 avoiding hole, 173 limiting groove, 174 first heat insulation piece, 175 second heat insulation piece, 180 temperature measuring piece, 190 mounting piece, 210 reinforcing rib, 211 heat dissipation channel, 220 sealing piece, 230 outer pot assembly, 231 first positioning part, 232 outer pot, 233 connecting piece, 240 containing cavity, 250 inner pot, 260 heating area. DETAILED DESCRIPTION

[0069] In order to enable the above-mentioned purpose, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0070] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced without the specific details, which are different from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0071] Some embodiments of the present application will be described below with reference to Figures 1 to 16 to describe the heating device 100 provided according to some embodiments of the present application.

[0072] In an embodiment according to the present application, as shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10 , a heating device 100 is provided, which comprises: a mounting seat 110, the mounting seat 110 is provided with a wiring hole 111; a base plate 120, which is arranged on the mounting seat 110 and forms a cavity 130 together with the mounting seat 110, the cavity 130 is in communication with the wiring hole 111; a heating film 140, which is arranged on the base plate 120 and located in the cavity 130; an electrical connecting piece 150, the first end 151 of the electrical connecting piece 150 is electrically connected with the heating film 140, and the second end 152 of the electrical connecting piece 150 is used to connect a power supply through the wiring hole 111; wherein the distance between the second end 152 of the electrical connecting piece 150 and the base plate 120 is less than or equal to the distance between the end of the wiring hole 111 away from the base plate 120 and the base plate 120.

[0073] The heating device 100 provided in the embodiments of the present application comprises the mounting seat 110, the base plate 120, the heating film 140 and the electrical connecting piece 150, specifically, the base plate 120 is arranged on the mounting seat 110, and the base plate 120 and the mounting seat 110 form the cavity 130 together. The heating film 140 is arranged on the base plate 120, and the heating film 140 is located in the cavity 130. Optionally, the heating film 140 comprises an electrothermal film or a graphene heating film.

[0074] One end of the electrical connecting piece 150 is electrically connected with the heating film 140, and the other end is connected with the power supply through the wiring hole 111, so as to realize the electrification of the heating film 140. It can be understood that the heating film 140 can quickly heat up under the condition of electrification, and the heat is transmitted to the inner pot 250 through the base plate 120, and the food is heated through the inner pot 250.

[0075] Since the distance between the second end 152 of the electrical connecting piece 150 and the substrate 120 is less than or equal to the distance between the end of the wire hole 111 away from the substrate 120 and the substrate 120, that is, the spacing between the second end 152 of the electrical connecting piece 150 and the end of the wire hole 111 away from the substrate 120 is greater than or equal to 0, that is, the end of the electrical connecting piece 150 away from the substrate 120 does not exceed the end of the wire hole 111, the problem of deformation of the electrical connecting piece 150 due to transfer or placement during the production and assembly of the heating device 100 can be effectively reduced, the scrap rate is reduced, and the production efficiency of the entire heating device 100 is improved.

[0076] Optionally, the electrical connecting piece 150 includes an electrode and a terminal, the electrode is arranged on the substrate 120 and is electrically connected with the heating film 140, and the terminal is welded on the electrode.

[0077] Optionally, the mounting seat 110 includes a metal piece or a plastic piece.

[0078] Optionally, the substrate 120 is an insulating plate.

[0079] Optionally, the substrate 120 is a glass plate.

[0080] Optionally, the heating device 100 includes a rice cooker, an induction cooker or an air fryer.

[0081] As shown in Figure 1 , Figure 2 and Figure 4 , in some embodiments, the mounting seat 110 is provided with a protective rib 112, the protective rib 112 extends outwardly away from the cavity 130, and the protective rib 112 is provided with the wire hole 111.

[0082] In this embodiment, it is defined that the mounting seat 110 is provided with the protective rib 112, specifically, the protective rib 112 extends outwardly away from the cavity 130, that is, the end of the protective rib 112 away from the substrate 120 extends outwardly.

[0083] Since the protective rib 112 is provided with the wire hole 111, that is, the end of the electrical connecting piece 150 away from the substrate 120 does not exceed the end of the protective rib 112 away from the substrate 120, the problem of deformation of the electrical connecting piece 150 due to transfer or placement during the production and assembly of the heating device 100 can be reduced, the structural strength of the mounting seat 110 is improved, the deformation of the mounting seat 110 during the production and assembly is prevented, the poor contact between the substrate 120 and the inner pot 250 due to the deformation of the mounting seat 110 is avoided, the local temperature of the heating film 140 exceeds the use temperature due to uneven heat transfer, the service life of the heating film 140 is prolonged, and the reliability of the heating device 100 is improved.

[0084] like Figure 3 As shown, in some embodiments, the heating device 100 may optionally include a protective cover 160, which is connected to the substrate 120 and located in the cavity 130. The protective cover 160 is provided with a protective cavity 161, and at least a portion of the electrical connector 150 is located in the protective cavity 161.

[0085] In this embodiment, the heating device 100 is further defined as including a protective cover 160. Specifically, the protective cover 160 is connected to the substrate 120. Optionally, the protective cover 160 is connected to the substrate 120 by an adhesive.

[0086] Since at least part of the electrical connector 150 is located inside the protective cavity 161, that is, the protective cover 160 is located outside the electrical connector 150, it can provide protection for the electrical connector 150, further reducing the problem of deformation of the electrical connector 150 due to transfer or placement during the production and assembly of the heating device 100, reducing the scrap rate, and thus helping to improve the overall production efficiency of the heating device 100.

[0087] like Figure 3 As shown, in some embodiments, optionally, the distance between the second end 152 of the power connector 150 and the substrate 120 is less than or equal to the distance between the end of the protective cover 160 away from the substrate 120 and the substrate 120.

[0088] In this embodiment, the distance between the end of the contact 150 away from the substrate 120 (the second end 152) and the substrate 120 is less than or equal to the distance between the end of the protective cover 160 away from the substrate 120 and the substrate 120. In other words, the end of the contact 150 away from the substrate 120 does not extend beyond the end of the protective cover 160 away from the substrate 120. This is beneficial to improving the protective effect of the protective cover 160 on the contact 150, further reducing the problem of deformation of the contact 150 due to transfer or placement during the production and assembly of the heating device 100, and improving the overall production efficiency of the heating device 100.

[0089] In some embodiments, the mounting base 110 may be a reflective element; or the inner wall of the cavity 130 may be provided with a reflective layer.

[0090] In this embodiment, the mounting base 110 is a reflective element, or the inner wall of the cavity 130 is provided with a reflective layer. It can be understood that since the heating film 140 is located inside the cavity 130, and the heat generated by the heating film 140 is transferred to the inner pot 250 via the substrate 120, by setting the mounting base 110 as a reflective element, the inner wall of the mounting base 110 is a reflective layer, or a reflective layer is provided on the inner wall of the mounting base 110, the heat emitted by the heating film 140 away from the substrate 120 can be reflected as much as possible to the side where the substrate 120 is located, thereby allowing more heat to be transferred to the inner pot 250 via the substrate 120, which is beneficial to improving the heating efficiency of the heating device 100 and improving the heating effect.

[0091] Optionally, the reflector may be made of aluminum, or the inner wall of the cavity 130 may have an aluminum layer. Aluminum material can reflect heat while also having high-temperature resistance, which helps improve the reliability of the heating device 100.

[0092] like Figure 2 As shown, in some embodiments, optionally, the minimum distance between the contact 150 and the outer edge of the substrate 120 is greater than or equal to 5 mm.

[0093] In this embodiment, the range of the minimum distance H between the electrical connector 150 and the outer edge of the substrate 120 is defined. Specifically, the minimum distance between the outer edge of the substrate 120 and the electrical connector 150 is greater than or equal to 5 mm, thereby ensuring the electrical safety distance of the electrical connector 150 after installation, which is beneficial to improving the reliability and safety of the heating device 100.

[0094] Optionally, the minimum distance between the outer edge of the substrate 120 and the contact element 150 is any one of 5mm, 6mm or 7mm.

[0095] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 13 and Figure 14 As shown, in some embodiments, the heating device 100 may optionally include a heat insulation component 170, which is disposed in the cavity 130 and located between the side of the heating film 140 away from the substrate 120 and the inner wall of the cavity 130; wherein the heating film 140 includes a plurality of heating segments 142, which are spaced apart, and at least one heating segment 142 is opposite to the heat insulation component 170 along the thickness direction of the substrate 120.

[0096] In this embodiment, the heating device 100 further comprises a heat insulation assembly 170, and specifically, the heat insulation assembly 170 is arranged in the cavity 130 and located between the side of the heating film 140 away from the substrate 120 and the inner wall of the cavity 130.

[0097] It can be understood that, in the case of the graphene heating film 140, the surface temperature can reach 400°C when powered on, and the generated heat is transmitted to the side of the substrate 120, and then transmitted to the inner pot 250 through the substrate 120 to heat the food in the inner pot 250. Since the heat insulation assembly 170 is located on the side of the heating film 140 away from the substrate 120, the heat emitted from the side of the heating film 140 away from the substrate 120 is subjected to heat insulation treatment, the temperature rise between the heating film 140 and the plastic bottom shell of the heating device 100 and the power board is insulated, and the heat generated by the heating film 140 is prevented from scalding the plastic bottom shell and the power board to cause safety hazards, thereby ensuring the basic performance of the heating device 100 and improving the reliability of the heating device 100.

[0098] The heating film 140 comprises a plurality of heating sections 142, and specifically, the plurality of heating sections 142 are arranged at intervals, and at least one heating section 142 is opposite to the heat insulation assembly 170 in the thickness direction of the substrate 120, that is, the heating area 260 formed by the heating film 140 is opposite to the heat insulation assembly 170, so that the heat emitted from the side of the heating film 140 away from the substrate 120 can be effectively subjected to heat insulation treatment, the heat insulation effect of the heat insulation assembly 170 on the heating film 140 is improved, and the heat generated by the heating film 140 is further prevented from scalding the plastic bottom shell and the power board to cause safety hazards, thereby improving the reliability of the heating device 100.

[0099] Optionally, each heating section 142 is electrically connected to the power connection piece 150.

[0100] In some embodiments, the power connection piece 150 is located at the outer periphery of the heat insulation assembly 170 and has a spacing between the power connection piece 150 and the heat insulation assembly 170.

[0101] In this embodiment, it can be understood that the temperature measuring piece 180 for measuring the film temperature of the heating film 140 is generally located in the void cavity 171 of the heat insulation assembly 170. By arranging the power connection piece 150 at the outer periphery of the heat insulation assembly 170, the power connection piece 150 can be isolated from the temperature measuring piece 180 and other structural components inside the heat insulation assembly 170, thereby preventing interference between the power connection piece 150 and other structures due to shaking during transportation.

[0102] In addition, the heat insulation assembly 170 generally comprises heat insulation cotton or aerogel, which can absorb moisture in the air after the heating device 100 works for a long time. If the heat insulation assembly 170 directly contacts the electrical connecting piece 150, the surface of the electrical connecting piece 150 will be wet, which affects the performance of the heating film 140. Since the electrical connecting piece 150 and the heat insulation assembly 170 are kept at a certain distance, the electrical connecting piece 150 can be effectively isolated from other structural parts, and the surface of the electrical connecting piece 150 can be kept dry during long-term use, thereby improving the reliability of the heating device 100.

[0103] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 indicate that, in some embodiments, the heat insulation assembly 170 is optionally provided with a clearance cavity 171, and the heating device 100 further comprises a temperature measuring piece 180, which is arranged in the clearance cavity 171 and used for detecting the temperature of the heating film 140.

[0104] In this embodiment, it is defined that the heating device 100 further comprises a temperature measuring piece 180, which is specifically used for detecting the temperature of the heating film 140. It can be understood that, in the case that the heating film 140 is a graphene heating film, the graphene heating film will be oxidized at high temperature, which will cause the product to lose heating effect. Moreover, if the film temperature of the graphene heating film exceeds 450℃ for a long time, the graphene in the graphene heating film will react with oxygen in the air to cause oxidation, which will increase the resistance of the graphene heating film and reduce the power, thereby affecting the performance of the graphene heating film. By arranging the temperature measuring piece 180 to detect the film temperature of the heating film 140, the heating film 140 can be protected, which is beneficial to prolong the service life of the heating film 140 and improve the reliability of the heating device 100.

[0105] The temperature measuring piece 180 is located in the clearance cavity 171, so that the influence of hot air at the bottom of the heating film 140 on the temperature measuring piece 180 can be isolated, the accuracy of temperature measurement of the temperature measuring piece 180 on the heating film 140 is improved, and the service life of the heating film 140 is further prolonged.

[0106] Optionally, the temperature measuring piece 180 comprises a temperature controller.

[0107] As shown in Figure 1 and Figure 2 indicate that, in some embodiments, the heat insulation assembly 170 is optionally provided with a clearance hole 172, which is in communication with the clearance cavity 171, and one end of the temperature measuring piece 180 is located in the clearance hole 172.

[0108] In the embodiment, the heat insulation assembly 170 is further provided with the avoiding hole 172, specifically, the avoiding hole 172 is in communication with the avoiding cavity 171, and one end of the temperature measuring piece 180 is located in the avoiding hole 172, so as to position the temperature measuring piece 180 and ensure the consistency of temperature measurement of the temperature measuring piece 180, thereby facilitating to improve the accuracy of temperature measurement of the temperature measuring piece 180 on the heating film 140.

[0109] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 7 , in some embodiments, optionally, the heat insulation assembly 170 is further provided with the limiting groove 173, and the heating device 100 further comprises the mounting piece 190, the mounting piece 190 is arranged in the cavity 130 and partially located in the limiting groove 173, and the temperature measuring piece 180 is arranged on the mounting piece 190.

[0110] In the embodiment, the heating device 100 further comprises the mounting piece 190, specifically, the mounting piece 190 is arranged in the cavity 130, and the temperature measuring piece 180 is arranged on the mounting piece 190, so as to realize the mounting of the temperature measuring piece 180.

[0111] The heat insulation assembly 170 is provided with the limiting groove 173, and a part of the mounting piece 190 is located in the limiting groove 173, so that the temperature measuring piece 180 can be limited in the axial direction (the thickness direction of the substrate 120), which is beneficial to ensure the consistency of temperature measurement of the temperature measuring piece 180, thereby facilitating to improve the accuracy of temperature measurement of the temperature measuring piece 180 on the heating film 140 and prolong the service life of the heating film 140.

[0112] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , in some embodiments, optionally, the heat insulation assembly 170 comprises a first heat insulation piece 174 and a second heat insulation piece 175, wherein the first heat insulation piece 174 is located between the second heat insulation piece 175 and the heating film 140; the first heat insulation piece 174 is a waterproof piece; and / or the second heat insulation piece 175 is a heat insulation cotton or aerogel piece; and / or the thickness of the first heat insulation piece 174 is greater than or equal to 0.5 mm and less than or equal to 4 mm; and / or the thickness of the heat insulation assembly 170 is greater than or equal to 5 mm and less than or equal to 30 mm.

[0113] In this embodiment, the heat insulation assembly 170 is defined to include the first heat insulation member 174 and the second heat insulation member 175, specifically, the first heat insulation member 174 is located between the heat-generating film 140 and the second heat insulation member 175, that is, two heat insulation members are arranged on the side of the heat-generating film 140 away from the substrate 120 to combine heat insulation, which is conducive to improving the heat insulation effect, so as to insulate the temperature rise between the heat-generating film 140 and the plastic bottom shell of the heating device 100 and the power board, prevent the heat generated by the heat-generating film 140 from scalding the plastic bottom shell and the power board to cause safety hazards, ensure the basic performance of the heating device 100, and improve the reliability of the heating device 100.

[0114] The second heat insulation member 175 is heat insulation cotton, or the second heat insulation member 175 is an aerogel member, so as to effectively insulate the heat dissipated from the side of the heat-generating film 140 away from the substrate 120.

[0115] It can be understood that since the second heat insulation member 175 is heat insulation cotton or aerogel, after the heating device 100 works for a long time, the second heat insulation member 175 will adsorb the moisture in the air, if the second heat insulation member 175 directly contacts the heat-generating film 140, or the first heat insulation member 174 is not waterproof, then the surface of the heat-generating film 140 will be wet, which will cause the resistance value of the heat-generating film 140 to increase and the heating power to decrease, affecting the heating performance of the product. In addition, in the case that the second heat insulation member 175 is heat insulation cotton, the heat insulation cotton is generally prone to dust falling, if the second heat insulation member 175 directly contacts the heat-generating film 140, the dust falling from the heat insulation cotton will affect the insulation performance of the surface of the heat-generating film 140 and the accuracy of the temperature measurement of the heat-generating film 140 by the temperature measuring member 180.

[0116] Since the first heat insulation member 174 is a waterproof member, that is, a waterproof member that does not absorb water is arranged between the second heat insulation member 175 and the heat-generating film 140, so as to avoid directly contacting the heat-generating film 140 and the second heat insulation member 175, thereby being able to realize heat insulation while keeping the surface of the heat-generating film 140 dry, improving the accuracy of the temperature measurement of the heat-generating film 140, and further improving the performance of the product.

[0117] The thickness of the first heat insulation member 174 is between 0.5mm and 4mm, so as to be able to ensure the heat insulation effect while being conducive to realizing the thinness of the heating device 100.

[0118] The thickness of the heat insulation assembly 170 is between 5mm and 30mm, so as to be able to ensure the heat insulation effect while being conducive to realizing the thinness of the heating device 100.

[0119] Optionally, the thickness of the first heat insulation member 174 is any one of 0.5mm, 1mm, 2mm, 3mm, and 4mm.

[0120] Optionally, the thickness of the heat insulation assembly 170 is any one of 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, and 30 mm.

[0121] Optionally, the first heat insulation piece 174 is a mica sheet.

[0122] As shown in Figure 1 , Figure 4 , Figure 5 and Figure 9 , in some embodiments, the mounting seat 110 includes a seat body 113 and a mounting portion 114, the seat body 113 is provided with the wiring hole 111, the mounting portion 114 is connected with the seat body 113, the mounting portion 114 is provided with the mounting groove 115, the outer peripheral end of the substrate 120 is arranged in the mounting groove 115, and the seat body 113 and the mounting portion 114 enclose the cavity 130; at least one of the seat body 113 and the mounting portion 114 is provided with the reinforcing rib 210.

[0123] In this embodiment, it is defined that the mounting seat 110 includes the seat body 113 and the mounting portion 114, specifically, the mounting portion 114 is provided with the mounting groove 115, and the outer peripheral end of the substrate 120 is arranged in the mounting groove 115, so as to realize the assembly between the substrate 120 and the mounting seat 110. Since the outer peripheral end of the substrate 120 is embedded in the mounting groove 115, it is beneficial to reduce the thickness of the heating device 100 as a whole, and realize the thinning of the product.

[0124] Optionally, the seat body 113 and the mounting portion 114 are an integral structure.

[0125] The seat body 113 is provided with the reinforcing rib 210. Alternatively, the mounting portion 114 is provided with the reinforcing rib 210. Alternatively, the seat body 113 and the mounting portion 114 are respectively provided with the reinforcing rib 210. Specifically, the setting can be made according to actual needs.

[0126] By arranging the reinforcing rib 210 on the seat body 113 and / or the mounting portion 114, the structural strength of the seat body 113 and / or the mounting portion 114 can be improved, so as to avoid that the seat body 113 and / or the mounting portion 114 are deformed during production and assembly, and thus the substrate 120 is not in good contact with the inner pot 250 after assembly. It can be understood that when the substrate 120 is not in good contact with the inner pot 250, the heat generated by the heating film 140 cannot be quickly transferred to the inner pot 250 and the food material, and the heat will form heat accumulation on the microcrystalline glass (substrate 120), so as to cause abnormal film temperature of the heating film 140, especially in the case that the heating film 140 is a graphene heating film, when the film temperature exceeds 400℃, the graphene component in the graphene heating film will be oxidized with oxygen in the air, so as to increase the resistance of the graphene heating film, reduce the heating power of the product, and affect the cooking performance of the product.

[0127] The reinforcing ribs 210 are arranged on the seat body 113 and / or the mounting portion 114 to improve the structural strength of the mounting seat 110, so that the substrate 120 is as horizontal as possible after the heating device 100 is assembled, and the substrate 120 is prevented from being in poor contact with the inner pot 250, which is beneficial to improve the heat transfer efficiency of the heating film 140, prevent the local temperature of the heating film 140 from exceeding the use temperature due to uneven heat transfer, and prolong the service life of the heating film 140.

[0128] Optionally, the reinforcing ribs 210 are arranged on the seat body 113, and the reinforcing ribs 210 extend protrudingly towards one side of the cavity 130, so that the mounting seat 110 can be placed horizontally during production and assembly, and the production efficiency is further improved.

[0129] Optionally, the number of the reinforcing ribs 210 is plural.

[0130] As shown in Figure 4 , Figure 9 , Figure 11 and Figure 12 , in some embodiments, the mounting portion 114 is provided with the reinforcing ribs 210, and the reinforcing ribs 210 are provided with the heat dissipation channels 211 that are in communication with the mounting grooves 115.

[0131] In this embodiment, the reinforcing ribs 210 are arranged on the mounting portion 114, and specifically, the reinforcing ribs 210 are provided with the heat dissipation channels 211 that are in communication with the mounting grooves 115. It can be understood that the connecting member 233 (the outer pot assembly 230) connected to the mounting portion 114 is generally a plastic member, and the heat generated by the heating film 140 and transferred to the substrate 120 can be dissipated outward through the heat dissipation channels 211 on the mounting portion 114, so that the heat is prevented from being accumulated here to cause thermal fusion of the connecting member 233, and the reliability of the heating device 100 is further improved.

[0132] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 13 , Figure 14 and Figure 15 , in some embodiments, the heating device 100 further comprises a sealing member 220 arranged between the outer circumferential end of the substrate 120 and the groove wall of the mounting groove 115.

[0133] In this embodiment, the heating device 100 further comprises a sealing member 220, which is arranged between the outer peripheral end of the base plate 120 and the groove wall of the mounting groove 115, thereby sealing the gap between the base plate 120 and the mounting portion 114, avoiding the cavity 130 from being damp, which affects the performance of the heating film 140.

[0134] In addition, since the sealing member 220 is wrapped around the outer peripheral end of the base plate 120, and the base plate 120 is generally a glass plate, the sealing member 220 can also protect the base plate 120 from being damaged by contacting with hard objects during production and assembly.

[0135] Optionally, the sealing member 220 abuts against the groove wall of the mounting groove 115, i.e. the sealing member 220 is in interference fit with the groove wall of the mounting groove 115, which can improve the sealing effect.

[0136] Optionally, the sealing member 220 is a sealing ring.

[0137] In some embodiments, optionally, along the thickness direction of the base plate 120, the side of the base plate 120 away from the heating film 140 is lower than the side of the mounting portion 114 away from the seat body 113.

[0138] In this embodiment, since the sealing member 220 is arranged between the outer peripheral end of the base plate 120 and the groove wall of the mounting groove 115 for sealing, the side of the base plate 120 away from the heating film 140 is lower than the side of the mounting portion 114 away from the seat body 113, that is, the top surface of the base plate 120 is lower than the top surface of the mounting portion 114, thereby reserving installation space for the sealing member 220, which is conducive to improving the sealing effect between the base plate 120 and the mounting portion 114.

[0139] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 , in some embodiments, optionally, the heating device 100 further comprises an outer pot assembly 230 and an inner pot 250, wherein the outer pot assembly 230 is located on the side of the base plate 120 away from the heating film 140 and connected with the mounting seat 110, the outer pot assembly 230 and the base plate 120 enclose a containing cavity 240, and the inner pot 250 is arranged in the containing cavity 240 in a removable manner.

[0140] In this embodiment, the heating device 100 further comprises an outer pot assembly 230 and an inner pot 250. Specifically, the outer pot assembly 230 is arranged on the side of the base plate 120 away from the heating film 140, and the outer pot assembly 230 is connected to the mounting seat 110 to form a modular assembly, which is conducive to further improving the production efficiency of the heating device 100.

[0141] The outer pot assembly 230 and the base plate 120 form a containing cavity 240, and the inner pot 250 is arranged in the containing cavity 240 in a removable manner. It can be understood that the inner pot 250 is provided with a cooking cavity for accommodating food materials. The outer side of the bottom of the inner pot 250 is a heating surface, and the heat generated by the heating film 140 is transmitted to the heating surface through the base plate 120, and then transmitted to the food materials in the cooking cavity through the inner pot 250, so as to heat and cook the food materials.

[0142] Optionally, the heating device 100 further comprises a temperature measuring assembly for detecting the temperature of the inner pot 250.

[0143] Optionally, the outer pot assembly 230 abuts against the sealing member 220.

[0144] Optionally, the inner pot 250 is a metal pot.

[0145] Optionally, the heating device 100 further comprises a pot body and a cover body, the cover body is hinged to the pot body, and the outer pot assembly 230 and the mounting seat 110 are arranged in the pot body after assembly.

[0146] Optionally, the cover body is provided with a steam port, and the steam port is in communication with the cooking cavity.

[0147] Optionally, the inner side of the outer pot assembly 230 is provided with a positioning structure for positioning the inner pot 250.

[0148] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 9 , Figure 11 and Figure 12 , in some embodiments, the outer pot assembly 230 is provided with a first positioning part 231, and the mounting seat 110 is provided with a second positioning part 116, and the second positioning part 116 is connected to the first positioning part 231 in a matched manner.

[0149] In this embodiment, the outer pot assembly 230 is provided with the first positioning part 231, and the mounting seat 110 is provided with the second positioning part 116, and specifically, the first positioning part 231 and the second positioning part 116 are connected in a matched manner, so as to improve the connection strength between the outer pot assembly 230 and the mounting seat 110, and facilitate to reduce the assembly difficulty of the heating device 100, and improve the assembly efficiency and production efficiency of the heating device 100.

[0150] Optionally, one of the first positioning part 231 and the second positioning part 116 is a positioning column, and the other is a positioning hole, and the positioning column is capable of being inserted into the positioning hole.

[0151] Optionally, the outer pot assembly 230 comprises an outer pot 232 and a connecting piece 233, the connecting piece 233 is arranged on the outer side of the outer pot 232, and the connecting piece 233 is connected with the mounting seat 110, so as to realize the assembly between the outer pot assembly 230 and the mounting seat 110. The first positioning part 231 is arranged on the connecting piece 233. The outer pot 232 and the base plate 120 enclose the containing cavity 240.

[0152] Optionally, the connecting piece 233 is connected with the mounting seat 110 through screws or buckles, so that the outer pot assembly 230, the mounting seat 110, the base plate 120 and the heating film 140 are assembled together to form a modular assembly, which is convenient for production and assembly and is conducive to improving production efficiency.

[0153] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9 and Figure 10 In some embodiments, the number of the power connection pieces 150 is two, and the two power connection pieces 150 are respectively electrically connected with the heating film 140, and the wiring holes 111 correspond to the power connection pieces 150 one by one; wherein the distance between the second end 152 of at least one power connection piece 150 and the base plate 120 is less than or equal to the distance between one end of the wiring hole 111 away from the base plate 120 and the base plate 120.

[0154] In this embodiment, the number of the power connection pieces 150 is limited to two, specifically, the two power connection pieces 150 are respectively electrically connected with the heating film 140. Since the wiring holes 111 correspond to the power connection pieces 150 one by one, that is, the number of the wiring holes 111 is also two, each power connection piece 150 is connected with the power supply through one wiring hole 111, so as to realize the power supply for the heating film 140, make the heating film 140 generate heat, and the heat is transmitted to the inner pot 250 through the base plate 120 to heat and cook the food in the inner pot 250.

[0155] Since the distance between the second end 152 of the electrical contact piece 150 and the substrate 120 is less than or equal to the distance between the end of the wire hole 111 away from the substrate 120 and the substrate 120, that is, the spacing between the second end 152 of the electrical contact piece 150 and the end of the wire hole 111 away from the substrate 120 is greater than or equal to 0, that is, the end of the electrical contact piece 150 away from the substrate 120 does not exceed the wire hole 111, the problem that the electrical contact piece 150 is deformed due to transfer or placement during the production and assembly of the heating device 100 can be effectively reduced, the scrap rate is reduced, and the production efficiency of the entire heating device 100 is improved.

[0156] Optionally, the two electrical contact pieces 150 are respectively located on the opposite sides of the heating film 140.

[0157] In the description of the specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0158] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like 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 present application. In the specification, the illustrative description 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.

[0159] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heating device, characterized in that, include: Mounting base, wherein the mounting base is provided with wiring holes; A substrate is disposed on the mounting base and forms a cavity with the mounting base, the cavity being connected to the wiring hole; A heating film is disposed on the substrate and located within the cavity; A power connector, wherein a first end of the power connector is electrically connected to the heating film, and a second end of the power connector is used to connect to a power source through the wiring hole; Wherein, the distance between the second end of the electrical connector and the substrate is less than or equal to the distance between the end of the wiring hole away from the substrate and the substrate.

2. The heating device according to claim 1, characterized in that, The mounting base is provided with a protective rib, which extends protruding from the side opposite to the cavity, and the protective rib is provided with the wiring hole.

3. The heating device according to claim 1, characterized in that, Also includes: A protective cover is connected to the substrate and located within the cavity. The protective cover has a protective cavity, and at least a portion of the electrical contact is located within the protective cavity.

4. The heating device according to any one of claims 1 to 3, characterized in that, The mounting base is a reflective element; or The inner wall of the cavity is provided with a reflective layer.

5. The heating device according to any one of claims 1 to 3, characterized in that, The minimum distance between the electrical contact and the outer edge of the substrate is greater than or equal to 5 mm.

6. The heating device according to any one of claims 1 to 3, characterized in that, Also includes: A heat insulation component is disposed within the cavity and located between the side of the heating film facing away from the substrate and the inner wall of the cavity; The heating film includes multiple heating segments, which are spaced apart. Along the thickness direction of the substrate, at least one heating segment is opposite to the heat insulation component.

7. The heating device according to claim 6, characterized in that, The electrical connector is located on the outer periphery of the thermal insulation component and is spaced apart from the thermal insulation component.

8. The heating device according to claim 6, characterized in that, The thermal insulation component includes: First thermal insulation component; The second heat insulation element, wherein the first heat insulation element is located between the second heat insulation element and the heating film; Wherein, the first heat insulation component is a waterproof component; and / or the second heat insulation component is a heat insulation cotton or aerogel component; and / or the thickness of the first heat insulation component is greater than or equal to 0.5 mm and less than or equal to 4 mm; and / or the thickness of the heat insulation component is greater than or equal to 5 mm and less than or equal to 30 mm.

9. The heating device according to any one of claims 1 to 3, characterized in that, The mounting base includes: The base body is provided with the wiring hole; The mounting part is connected to the base body. The mounting part is provided with a mounting groove. The outer peripheral end of the substrate is located in the mounting groove and surrounds the base body to form the cavity. At least one of the base and the mounting part is provided with a reinforcing rib.

10. The heating device according to claim 9, characterized in that, Also includes: A sealing element is disposed between the outer peripheral end of the substrate and the wall of the mounting groove.

11. The heating device according to claim 9, characterized in that, Along the thickness direction of the substrate, the side of the substrate facing away from the heating film is lower than the side of the mounting portion away from the base.

12. The heating device according to any one of claims 1 to 3, characterized in that, Also includes: An outer pot assembly is located on the side of the substrate away from the heating film and is connected to the mounting base. The outer pot assembly and the substrate enclose a receiving cavity. The inner pot is removably and placeably located within the receiving cavity.

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