Heating structure and baking equipment

Abstract

The utility model relates to the technical field of electric heating, in particular to a heating structure and baking equipment, which at least comprises insulating base materials, a heating area is formed between adjacent insulating base materials, and a conductive heating layer is arranged on the surface A of one side, far away from the heating area, of each insulating base material. According to the utility model, a heating effect is realized by arranging the conductive heating layer on the insulating base material, the hollow heating area is formed between the insulating base materials, and a heated object is placed in the heating area and then is heated by conducting the conductive heating layer, so that the heated object can be heated without being in contact with the conductive heating layer; the conductive heating layer is located on the side, away from the heating area, of the insulation base material, electric leakage and electric shock hidden dangers can be avoided even if the heated object accidentally makes contact with the insulation base material due to shaking or swinging, the conductive heating layer heats the heated object across the air through heat radiation generated by electrification, and the heating effect is achieved without depending on the contact area. The heating area is more uniform, and a user can use conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric heating technical field, concretely is a kind of heating structure and baking equipment. BACKGROUND

[0002] Electric heating products on the market are relatively rich, and the most common heating method is to use metal-made heating substrate to generate heat by resistance heating, such as heating wire of electric heating rod, heating seat of electric kettle, heating copper pipe of water heater, etc. These products are very convenient to use in heating, but in the heating process, the metal-made heating substrate needs to be heated by contacting the heated object, such as inserting the heating wire into the water to heat the water source, the heating seat contacts the bottom of the kettle to heat the kettle body, and the normal temperature water flows through the heating copper pipe to heat the water flow. These contact heating methods are prone to electric shock hazards, and the heating effect obtained according to the contact area is not uniform, and the surface not in contact needs to rely on the thermal conductivity of the heated object to transfer heat to be heated, which is not convenient for uniform heating and is prone to affect the heating quality.

[0003] In view of the above shortcomings, we need to develop a heating structure and baking equipment to meet the needs of the majority of users. INVENTION CONTENTS

[0004] In view of the above-mentioned problems of the existing electric heating method, the utility model solves the technical problems by adopting the following technical solutions:

[0005] A heating structure includes at least two independently arranged insulating substrates, and a hollow heating area is formed between adjacent insulating substrates. The surface A of the insulating substrate away from the heating area is provided with a conductive heating layer for heating the heating area.

[0006] Further, the conductive heating layer includes a heating layer for electric heating and an electrode layer for connecting the power supply, and at least two independently arranged electrode layers are located on both sides of the heating layer.

[0007] Further, the electrode layer includes a first electrode and a second electrode, the first electrode extends out of the first conductive track towards the outer edge of the insulating substrate, and the second electrode extends out of the second conductive track towards the outer edge of the insulating substrate. The power connection end of the first conductive track and the power connection end of the second conductive track are located on the same side of the insulating substrate.

[0008] Further, the insulating substrate is further provided with a conductive protective layer, which is located in the area between the outer edge of the insulating substrate and the outer edge of the conductive heating layer, and is spaced apart from the conductive heating layer, and the conductive protective layer can be electrically connected to an external electric control device for triggering power-off protection to form a power-on loop, so that when the insulating substrate is damaged, the conductive protective layer is disconnected to cause the power-on loop to be disconnected to trigger power-off protection.

[0009] Further, the conductive protective layer comprises a conductive layer arranged in a ring shape around the outer side of the conductive heating layer, one end of the conductive layer has a first end point, the other end of the conductive layer has a second end point, and the first end point and the second end point have a gap G for the conductive heating layer to extend to connect a power supply, and the first end point and the second end point are respectively connected to an external electric control device to form a power-on loop.

[0010] Further, the heating material of the conductive heating layer is formed into a planar heating layer by using one of nanometer metal oxide, nanometer semiconductor metal oxide, graphene material, and carbon paste material.

[0011] A baking device comprises the heating structure and a shell member for detachably mounting the heating structure, and the shell member is provided with a shell inlet for the heated object to enter the heating area.

[0012] Further, the shell member is provided with at least one transparent member for facilitating observation of the heating area from the outside, and the conductive heating layer is located on the side of the insulating substrate facing the transparent member.

[0013] Further, a temperature control device for real-time detection of the temperature of the heating area is further included, the temperature control device is mounted on the shell member and is electrically connected between the conductive heating layer and the power supply, and when the heating area is detected to be in an overheated state, the temperature control device disconnects the circuit between the conductive heating layer and the power supply.

[0014] Further, a heat insulation material is mounted between the shell member and the heating structure.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The utility model discloses a heating effect is implemented by the mode of setting the conductive heating layer on the insulating substrate, forms the hollow heating area between the insulating substrate, and the heated object is placed in the heating area after the conductive heating layer is heated to it, and the heated object can realize the heating action without contacting the conductive heating layer, on this basis, the conductive heating layer is located at the side of the insulating substrate far from the heating area, even if the heated object accidentally contacts the insulating substrate due to shaking or swinging, also can avoid the electric shock hidden danger of electric leakage, and the conductive heating layer utilizes the heat radiation generated by electrification to heat the heated object in the air, does not depend on the contact area to play the heating effect, makes the heated area more uniform, and the user uses conveniently.

[0017] 2. The utility model discloses setting the conductive protective layer between the outside edge of the insulating substrate and the outside edge of the conductive heating layer, forms the electrification loop through the electric connection outside the electric control equipment for triggering the power-off protection, when the insulating substrate is damaged or is destroyed, makes the conductive protective layer disconnect and causes the electrification loop to disconnect to trigger the power-off protection mechanism of electric control equipment, avoids under the condition that the insulating substrate is damaged, still continues to output heat energy and electric energy, plays the protection effect of protecting the user safety or protecting the environmental safety, further reduces the security risk.

[0018] 3. The utility model discloses installing the heating structure to the shell piece, forms an installation shell body with protection function and heat insulation effect, can avoid the user accidental miscontacting the conductive heating layer, can also play the effect of heat insulation of heating structure, and the user can carry and move the position of heating structure by contacting the shell piece, on this basis, the shell piece is installed with the heat insulation material between the heating structure, avoids the heat transfer to the surface of shell piece scalds the hand of user, and the user carries the baking equipment conveniently.

[0019] 4. The utility model discloses setting the transparent piece on the shell piece, and the user can directly see the heating condition of the heated object in the heating area through the transparent piece, to shut off the power and disconnect the heating process at any time, and the user controls the heating effect conveniently, on this basis, can set up multiple transparent pieces, and the user can observe the heating condition of the heated object in the heating area from different angles, can also set the temperature control device for real -time detection of heating area temperature on the shell piece, disconnects the circuit between the conductive heating layer and power under the overheating state, realizes the effect of automatic heating power -off, so that the user can save the effort in use, and the user uses conveniently.

[0020] 5、The heating material of the conductive heating layer can adopt one of nanometer metal oxide, nanometer semiconductor metal oxide, graphene material and carbon paste material to form a thin and light planar heating layer or an attached layer, so as to reduce the overall space occupation and reduce the power consumption, preferably, the nanometer semiconductor metal oxide is adopted, the thickness of the nanometer semiconductor metal oxide attached on the insulating base material is smaller, the conductivity and the heating performance are also relatively excellent, the attachment process (coating, silk printing, physical vapor deposition method and the like) is simple and efficient, the production cost is reduced, the production efficiency is improved, and a large quantity of production can be met. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of a baking equipment of the utility model.

[0022] Figure 2 It is an internal structure view of a heating structure and a baking equipment thereof.

[0023] Figure 3 It is an internal structure view of a heating structure and a baking equipment thereof.

[0024] Figure 4 It is an internal structure view of a heating structure and a baking equipment thereof.

[0025] Figure 5 It is a front view of a heating structure of the utility model. DETAILED DESCRIPTION

[0026] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0027] Optionally, in some embodiments, the insulating base material 100 can be made of one of glass, ceramic, stone, plastic, rubber and the like, preferably, the insulating base material 100 is made of microcrystalline glass in glass material, the microcrystalline glass has good vertical thermal conductivity and light transmittance, the vertical thermal conductivity effectively strengthens the efficiency and speed of heat transfer, so that the overall heating is rapid and uniform, the microcrystalline glass has good light transmittance, and the ornamental property on the product appearance is better, the microcrystalline glass has good resistance to most chemical substances and is not easy to be corroded, and has high hardness and is not easy to be abraded in long-term use, the thermal expansion coefficient of the microcrystalline glass is low in the high-temperature state, and deformation and rupture are not easy to occur.

[0028] Optionally, in some embodiments, the electrode layer 22 and / or the conductive layer 33 can be made of one of the materials with good conductivity such as gold, silver, copper, aluminum, tin, etc. Preferably, the electrode layer 22 and / or the conductive layer 33 are laid with silver paste. Silver paste has high conductivity, can effectively conduct current, reduce power loss, and silver paste is easy to form on the surface of the insulating substrate 100, which is convenient for processing and production.

[0029] Optionally, in some embodiments, the outer shell 400 can be made of a hard material with a certain structural strength, such as metal, plastic, glass, ceramic, etc. Preferably, the outer shell 400 is made of metal. The metal has a low high-temperature deformation coefficient and is not easily damaged or broken by frequent collisions and impacts as an outer shell. It is durable and easy for users to carry, transport and store.

[0030] Optionally, in some embodiments, the transparent part 42 can be made of one of the transparent materials such as glass, plastic, rubber, etc. Preferably, the transparent part 42 is made of glass. Glass has good visual transparency, good tolerance to most chemicals, is not easily corroded, and has high hardness. It will not be easily worn out after long-term use. The thermal expansion coefficient of glass is low under high temperature conditions and is not easy to deform.

[0031] Optionally, in some embodiments, the thermal insulation material can be made of one of the thermal insulation materials such as aluminum silicate fiber, aluminum oxide fiber, glass fiber, aerogel, etc.

[0032] Example 1:

[0033] like Figures 3 to 5 A heating structure shown includes at least two independently arranged insulating substrates 100, a hollow heating area 11 is formed between adjacent insulating substrates 100, and a surface A of the insulating substrate 100 away from the heating area 11 is provided with a conductive heating layer 200 for heating the heating area 11.

[0034] Specifically, in this embodiment, the insulating substrate 100 is a hard and brittle material used to support the conductive heating layer 200. It has good structural stability and is less susceptible to deformation and bending than soft and flexible materials. A hollow heating area 11 is formed between adjacent but non-contacting insulating substrates 100 for the heated object to extend into. After the heated object is placed in the heating area 11, it can be erected in the heating area 11 without contacting the insulating substrate 100 due to the hardness of its own material, or it can be suspended in the heating area 11 through auxiliary fixing accessories. The surface of the insulating substrate 100 can be divided into at least surface A and surface B, wherein surface A is independently arranged on the side of the insulating substrate 100 away from the heating area 11, and surface B is independently arranged on the side of the insulating substrate 100 close to the heating area 11.

[0035] More specifically, the conductive heating layer 200 is located on the surface A of the insulating base material 100 away from the heating area 11. After the conductive heating layer 200 is connected to an external power supply (which can be a battery, a power supply device or a mains power supply, etc.) through an electric wire or a solid electrode accessory, the conductive heating layer 200 can generate heat to form a high-temperature area. The conductive heating layer 200 directly heats the heated object of the user, so that the temperature of the heated object gradually increases, and the heating effect is achieved.

[0036] More specifically, the conductive heating layer 200 uses a nano-semiconductor metal oxide as a conductive heating material. The nano-semiconductor metal oxide can use one of tin, antimony, nickel, ammonium, etc. as a nano-particle. When manufacturing, the nano-semiconductor metal oxide can be attached to the surface of the insulating base material 100 by one of a physical vapor deposition method (PVD), a chemical vapor deposition method (CVD), silk printing (SS), far infrared spectrum (FI), etc. The laying thickness of the conductive heating layer 200 is less than 1 mm. After high-temperature sintering, a fixed heating area is formed.

[0037] In use, at least two insulating base materials 100 are arranged adjacent to each other to form a heating area 11 between the two insulating base materials 100. The heated object can be placed in the heating area 11, or the position of the heated object can be stabilized by using an auxiliary fixing accessory. Then, the power supply is turned on to conduct the conductive heating layer 200 to start heating. The heat of the conductive heating layer 200 is transferred to the insulating base material 100, and then radiated to the heated object through the insulating base material 100. The heat radiation can also directly penetrate the insulating base material 100 to affect the surface of the heated object. The heated object is heated and warmed, and the heating effect is achieved.

[0038] After heating is completed, the power supply is turned off to stop the conductive heating layer 200 from heating. After the insulating base material 100 cools down, the user can take it away for storage. The use process is simple and convenient for the user.

[0039] The embodiment uses the conductive heating layer 200 arranged on the insulating base material 100 to achieve the heating effect. The hollow heating area 11 is formed between the insulating base materials 100. After the heated object is placed in the heating area 11, the conductive heating layer 200 is turned on to heat it. The heated object can achieve the heating effect without contacting the conductive heating layer 200. On this basis, the conductive heating layer 200 is located on the side of the insulating base material away from the heating area 11. Even if the heated object accidentally contacts the insulating base material 100 due to shaking or swinging, the risk of electric shock due to leakage can be avoided. The conductive heating layer 200 uses the heat radiation generated by electrification to heat the heated object from a distance. The heating effect is achieved without relying on the contact area, so that the heated area is more uniform, and the user can use it conveniently.

[0040] As another embodiment of Embodiment 1, the insulating substrate 100 can also adopt a soft flexible material as a carrier for carrying the conductive heating layer 200, and the flexible feature can adapt to different spaces and environments, form heating areas 11 of different shapes, and be applicable to surrounding objects with different shapes and structures.

[0041] As another embodiment of Embodiment 1, the insulating substrate 100 can adopt one of microcrystalline glass or microcrystalline ceramic as a production material, and preferably, the insulating substrate 100 adopts microcrystalline glass as the main production material. Microcrystalline glass has a low thermal expansion coefficient and almost no deformation when the temperature changes. It also has a clear transparent effect in the visual degree, and is suitable for heating assemblies with frequent temperature changes.

[0042] As another embodiment of Embodiment 1, the heating material of the conductive heating layer 200 in this embodiment adopts graphene film as the conductive heating material. Graphene has high thermal conductivity and excellent electrical conductivity. When making, the graphene film is formed on the surface of the insulating substrate 100 to form a fixed heating area.

[0043] As another embodiment 101 of Embodiment 1, the panel structure of the insulating substrate 100 can adopt a flat panel structure or a curved panel structure. This embodiment preferably adopts a flat panel structure. The panel structure can be a panel shape enclosed by straight lines and / or curves to form an outline. The surface A is one of the front and back of the panel structure, and the surface B is the other of the front and back of the panel structure. The flat panel structure in the panel structure is convenient for users to uniformly heat the heated objects, so that the heated objects can be uniformly heated, improve the heating stability, and improve the heating efficiency.

[0044] More specifically, the flat panel structure of the insulating substrate 100 can adopt one of shapes composed of straight lines and / or curves, such as a circular shape, an elliptical shape, a rectangular shape, a trapezoidal shape, etc.

[0045] As another embodiment 102 of Embodiment 101, compared with the flat surface structure, when the heated object has a special profile on the outside, the heating distance between the flat surface structure and the heated object is limited, and the heat radiation effect cannot be better played. Therefore, the panel structure of the insulating substrate 100 can also adopt a curved panel structure, which is used to adapt to the curved and uneven curved surface structure of the surface of the heated object, so as to adapt to the special outside modeling of individual heated objects.

[0046] Embodiment 2:

[0047] On the basis of Embodiment 1, as Figure 3 and Figure 5A heating structure shown in FIG. 2 is a conductive heating layer 200 including a heating layer 21 for heating by electricity and an electrode layer 22 for connecting to a power source, wherein the heating layer 21 can be formed of a planar heating layer using one of nano-metal oxides, nano-semiconductor metal oxides, graphene materials, and carbon paste materials. Preferably, the heating layer 21 uses nano-semiconductor metal oxides as the conductive heating material, and the laying thickness of the heating layer 21 and the laying thickness of the electrode layer 22 are both less than 1 mm. The nano-semiconductor metal oxide can be made of one of tin, antimony, nickel, ammonium, etc. as nanoparticles. When the nano-semiconductor metal oxide is made, the nano-semiconductor metal oxide is formed of one of tin, antimony, nickel, ammonium, etc. The metal oxide can be attached to the surface A of the insulating substrate 100 by physical vapor deposition (PVD), chemical vapor deposition (CVD), silk screen printing (SS), far infrared spectroscopy (FI), etc., and a fixed heating area is formed after high-temperature sintering. At least two separately laid electrode layers 22 are located on both sides of the heating layer 21 to facilitate connection to external electrical control equipment for power supply and heating. Preferably, the electrode layer 22 can also use silver paste as the conductive material. Silver paste has high conductivity, can effectively conduct current, reduce power loss, and silver paste is easy to form on the surface of the insulating substrate 100, which is convenient for processing and production.

[0048] As another embodiment of Example 2, the heating layer 21 of this embodiment uses graphene coating as a conductive heating material. Graphene has high thermal conductivity and excellent conductivity. During production, the graphene coating is formed on the surface of the insulating substrate 100 to form a fixed heating area.

[0049] Example 3:

[0050] On the basis of Example 2, Figure 5 A heating structure shown in the figure, the electrode layer 22 includes a first electrode 22.1 and a second electrode 22.3, wherein one of the first electrode 22.1 and the second electrode 22.3 can be used as the input end of the conductive circuit of the heating layer 21, and the other of the first electrode 22.1 and the second electrode 22.3 can be used as the output end of the conductive circuit of the heating layer 21. After the first electrode 22.1 and the second electrode 22.3 are respectively connected to the power supply, a heating power supply circuit for conducting the heating layer 21 can be formed, and the heating layer 21 can start to generate heat after being energized.

[0051] On this basis, the first electrode 22.1 extends a first conductive track 22.2 towards the outer side edge of the insulating base material 100, and the second electrode 22.3 extends a second conductive track 22.4 towards the outer side edge of the insulating base material 100, wherein the first conductive track 22.2 is used to extend the circuit connection range of the first electrode 22.1, and the second conductive track 22.4 is used to extend the circuit connection range of the second electrode 22.3, so as to further facilitate the circuit connection on the same side of the insulating base material 100, and the power connection end of the first conductive track 22.2 and the power connection end of the second conductive track 22.4 extend to positions close to the same outer side edge of the insulating base material 100, more specifically, the first conductive track 22.2 can extend towards the second electrode 22.3 through the outer side area of the heating layer 21, or the second conductive track 22.4 can extend towards the first electrode 22.1 through the outer side area of the heating layer 21, and after the extension, the first conductive track 22.2 and the second conductive track 22.4 can be on the same side of the insulating base material 100, and the first conductive track 22.2 and the second conductive track 22.4 can form a heating power supply circuit by connecting the power supply on the nearest side, which can simplify the circuit layout, is more convenient for wire storage and arrangement, and is helpful for optimizing the overall wiring structure.

[0052] Embodiment 4:

[0053] On the basis of any of the above embodiments, as shown in a heating structure, Figures 2 to 5 the insulating base material 100 is further provided with a conductive protective layer 300, more specifically, the conductive protective layer 300 is a conductive material formed on the insulating base material 100 in the form of a coating, a film or an adhesive attachment, and is a conductive open ring structure with non-coincident end points, and the laying thickness of the conductive protective layer 300 is less than 1 mm, the conductive heating layer 200 is located in a protective area surrounded by the conductive protective layer 300, and the conductive protective layer 300 is located in a position or area not connected or contacted between the outer side edge of the insulating base material 100 and the outer side edge of the conductive heating layer 200, and the conductive protective layer 300 and the conductive heating layer 200 are spaced apart, and the spacing position is not connected and not contacted with each other, so as to avoid the mutual influence of the conductive protective layer 300 and the conductive heating layer 200 after being contacted.

[0054] Preferably, in the present embodiment, the insulating substrate 100 is made of hard brittle material, and in use, the conductive protective layer 300 can be electrically connected to external electric control device for triggering power-off protection to form a power-on circuit, and the external electric control device can detect the integrity of the power-on circuit in real time to determine whether the insulating substrate 100 has been damaged or broken, when the insulating substrate 100 is intact, the power-on circuit is in a normal state, when the insulating substrate 100 is damaged or broken, the conductive protective layer 300 is disconnected synchronously due to the damage of the insulating substrate 100, resulting in the disconnection of the power-on circuit, which is determined as an abnormal state. Since the conductive protective layer 300 is formed on the insulating substrate 100 by coating, adhesion, silk printing or physical vapor deposition, the conductive protective layer 300 itself does not have toughness and ductility, so when the insulating substrate 100 is damaged or broken and affects the normal heating of the conductive heating layer 200, the damaged or broken part must first pass through the conductive protective layer 300 around the outside, and then enter the heating area to damage the conductive heating layer 200. On this basis, when the insulating substrate 100 is damaged or broken, the adhesion layer of the conductive protective layer 300 is broken, and the adhesion layer of the conductive protective layer 300 is broken, which means that the power-on circuit is disconnected, and the power-on circuit is disconnected, which can immediately trigger the power-off protection mechanism of the external electric control device, so as to realize the power-off protection effect with fast response speed and high protection efficiency.

[0055] Embodiment 5:

[0056] On the basis of embodiment 4, as Figure 5As shown in one of the heating structures, the conductive protective layer 300 includes a conductive layer 33 arranged in a ring shape around the outer side of the conductive heating layer 200, one end of the conductive layer 33 has a first end point 31, the other end of the conductive layer 33 has a second end point 32, and the first end point 31 and the second end point 32 have a gap G for the conductive heating layer 200 to extend out to connect the power supply, and the first end point 31 and the second end point 32 are respectively connected to the external electrical control equipment to form a power supply loop. The conductive protective layer 300 includes a conductive layer 33 arranged in a ring shape around the outer side of the conductive heating layer 200, the conductive layer 33 is a conductive material attachment path formed in a circumferential ring around the heating area on the insulating substrate 100 in the form of a coating, a film or an adhesive attachment, the conductive layer 33 adopts an open ring structure, the laying thickness of the conductive layer 33 is less than 1mm, one end of the conductive layer 33 has a first end point 31, the other end of the conductive layer 33 has a second end point 32, and the first end point 31 and the second end point 32 are both connection ends for connecting the conductive layer 33 to the external electrical control equipment, more specifically, the first end point 31 and the second end point 32 are arranged on the same side of the insulating substrate 100, after being connected to the external electrical control equipment, the first end point 31, the conductive layer 33, the second end point 32 and the external electrical control equipment form a power supply loop, when the conductive layer 33 is disconnected due to damage or fragmentation of the insulating substrate 100, the power supply loop will be disconnected, and after the circuit is disconnected, the power-off protection mechanism of the external electrical control equipment will be triggered.

[0057] More specifically, the first end point 31 and the second end point 32 have a gap G, the size of the gap G determines the separation distance between the first end point 31 and the second end point 32, and the separation distance between the first end point 31 and the second end point 32 determines the electrode layout space available for the conductive heating layer 200 to connect the power supply, the wider the gap size of the gap G, the wider the electrode line width of the conductive heating layer 200 to connect the power supply.

[0058] As another embodiment of Embodiment 5, the insulating substrate 100 can be made of one of microcrystalline glass or microcrystalline ceramic as a production material, preferably, the insulating substrate 100 is made of microcrystalline glass as the main preparation material, the surface of the microcrystalline glass will appear static ions in high temperature state, when the temperature of the microcrystalline glass exceeds 300 degrees, the microcrystalline glass may have conductive properties, on this basis, the first end point 31 extends a conductive lead wire towards the conductive heating layer 200 to shorten the distance between the conductive protective layer 300 and the conductive heating layer 200, when the microcrystalline glass has conductive properties at a certain temperature, the conductive heating layer 200 connects the conductive lead wire through the insulating substrate 100, which triggers a short circuit of the power supply loop, the short circuit of the power supply loop triggers the power-off protection of the external electrical control equipment, and the power-off protection is realized to avoid overheating of the conductive heating layer 200.

[0059] Embodiment 6:

[0060] On the basis of any of the above embodiments, a baking device as shown in Figures 1 to 4 The shell member 400 can be made of metal, which is easy to process into a thin-walled shell to form a split shell assembly with a hollow chamber. The insulating base material 100 is installed inside the shell member 400 and fixed in position by the limiting structure 43 of the shell member 400, so that the adjacent insulating base materials 100 can stably form a hollow heating area. On this basis, the shell member 400 is provided with a shell inlet 41 for the heated object to enter the heating area 11. The shell inlet 41 is located at the position of the shell member 400 corresponding to the heating area 11. The shell inlet 41 is generally preferably located at the top of the shell member 400 away from the ground, which can facilitate the user to place it behind the countertop for use.

[0061] The heating structure of the above embodiment is applied to the shell member 400 and assembled to form a baking device, which is convenient for the user to use and control the operation of the heating structure. The user does not need to arrange the position of the insulating base material 100 himself, and the situation of scalding caused by accidentally touching the surface of the insulating base material 100 during use is also avoided. In addition, the shell member 400 can also play a heat insulation role. The heat generated by the insulating base material 100 affected by the conductive heating layer 200 can be blocked by the shell member 400, so that the heat is more concentrated in the heating area 11, and the influence of these heat on the user's body can also be blocked.

[0062] As another embodiment of Embodiment 6, an operation button can also be installed on the surface of the shell member 400. The operation button includes a power control button and a temperature control button, so as to facilitate the user to control the power on / off and temperature setting of the heating structure.

[0063] As another embodiment of Embodiment 6, an operation indicating lamp can also be installed on the surface of the shell member 400. The operation indicating lamp includes a power indicating lamp and a temperature indicating lamp. The power indicating lamp is turned on after starting heating and turned off after stopping heating. The temperature indicating lamp can correspond to different temperature setting gears, and is arranged in cooperation with the pointing direction of the knob or the position of the button, so as to facilitate the user to visually operate the power on / off and temperature setting of the heating structure.

[0064] Embodiment 7:

[0065] On the basis of Embodiment 6, a baking device as shown in Figures 1 to 4The roasting device shown in the embodiment is provided with at least one transparent member 42 for facilitating the observation of the heating area 11 from the outside, which is preferably made of glass or acrylic plate. According to the position installed on the shell member 400, the transparent member 42 can be divided into a plurality of transparent members 42, which can be used by the user to directly observe the internal heating condition of the shell member 400 from different positions and directions. More specifically, the conductive heating layer 200 is located between the insulating base material 100 and the transparent member 42 and on the side of the insulating base material 100 facing the transparent member 42, so as to avoid the direct contact of the heated object with the conductive heating layer 200 in the heating area 11. In addition, the interval distance between the insulating base material 100 and the transparent member 42 can be used for heat insulation, so as to reduce the heat transfer to the shell member 400 and the transparent member 42 and reduce the occurrence of scalding and other conditions caused by the user contacting the shell member 400 and the transparent member 42.

[0066] Embodiment 8

[0067] On the basis of embodiment 6, the roasting device further comprises a temperature control device (not shown) for detecting the temperature of the heating area 11 in real time. The temperature control device is installed on the shell member 400 near the heating area 11 and is electrically connected between the conductive heating layer 200 and the power supply. The temperature control device can use an NTC thermistor or a temperature sensor as a detection end. Before use, the temperature control device can be pre-set with a temperature, and the rated temperature value of the overheating state is set. When it is detected that the heating area 11 is in the pre-set overheating state, the temperature control device can disconnect the circuit between the conductive heating layer 200 and the power supply, stop the heating of the conductive heating layer 200, and stop the heating of the heating area 11 to avoid the continuous heating of the conductive heating layer 200, which makes the heating area 11 in the overheating state and damages the heated object or the roasting device.

[0068] Embodiment 9

[0069] On the basis of embodiment 6, the roasting device is provided with a heat insulation material (not shown) between the shell member 400 and the heating structure, which further blocks the heat volatilization of the heating structure, helps to gather the heat in the space near the heating area 11, forms the effect of heat preservation and insulation, and on this basis, can block the influence of heat on the shell member 400, reduce the temperature of the outer surface of the roasting device, avoid the situation that the roasting device scalds the user's hand, and play the effect of preventing scalding. In addition, the heat insulation material can also play a certain impact force buffering effect, slow down the influence of the external impact force of the roasting device on the inside, protect the insulating base material 100, and improve the durability of the roasting device.

[0070] The above only further illustrates the technical content of the utility model with examples, so that the reader can more easily understand, but does not represent that the embodiment of the utility model is limited to this, and any technical extension or re-creation made according to the utility model is protected by the utility model. The protection scope of the utility model is subject to the patent claim.

Claims

1. A heating structure, characterized by: The heating structure comprises at least two independently arranged insulation substrates (100), a hollow heating area (11) is formed between adjacent insulation substrates (100), and a conductive heating layer (200) for heating the heating area (11) is arranged on the surface A of the insulation substrate (100) away from the heating area (11).

2. A heating structure according to claim 1, wherein: The conductive heating layer (200) comprises a heating layer (21) for electric heating and an electrode layer (22) for connecting a power source, and at least two independently arranged electrode layers (22) are respectively arranged on both sides of the heating layer (21).

3. A heating structure according to claim 2, wherein: The electrode layer (22) comprises a first electrode (22.1) and a second electrode (22.3), the first electrode (22.1) extends out of a first conductive track (22.2) towards the outer edge of the insulation substrate (100), the second electrode (22.3) extends out of a second conductive track (22.4) towards the outer edge of the insulation substrate (100), and the power connection end of the first conductive track (22.2) and the power connection end of the second conductive track (22.4) are located on the same side of the insulation substrate (100).

4. The heating structure of claim 1, wherein: The insulation substrate (100) is further provided with a conductive protective layer (300), the conductive protective layer (300) is located in the region between the outer edge of the insulation substrate (100) and the outer edge of the conductive heating layer (200), the conductive protective layer (300) is arranged in a spaced manner with the conductive heating layer (200), the conductive protective layer (300) can be electrically connected to an external electric control device for triggering power-off protection to form a power-on loop, and when the insulation substrate (100) is damaged, the conductive protective layer (300) is disconnected to cause the power-on loop to be disconnected to trigger power-off protection.

5. A heating structure according to claim 4, wherein: The conductive protective layer (300) comprises a conductive layer (33) arranged in a surrounding manner around the outer side of the conductive heating layer (200), one end of the conductive layer (33) has a first end point (31), the other end of the conductive layer (33) has a second end point (32), the first end point (31) and the second end point (32) have a gap G for the conductive heating layer (200) to extend out to connect the power source, and the first end point (31) and the second end point (32) are respectively connected to the external electric control device to form a power-on loop.

6. The heating structure of claim 1, wherein: The conductive heating layer (200) is formed by one of a nano metal oxide, a nano semiconductor metal oxide, a graphene material, and a carbon paste material.

7. A roasting apparatus characterised by: The heating structure comprises the heating structure according to any one of claims 1-6 and a shell member (400) for detachably mounting the heating structure, and the shell member (400) is provided with a shell inlet (41) for the heated object to enter the heating area (11).

8. The toasting apparatus of claim 7, wherein: The shell member (400) is provided with at least one transparent member (42) for facilitating observation of the heating area (11) from the outside, and the conductive heating layer (200) is located on the side of the insulation substrate (100) facing the transparent member (42).

9. The toasting apparatus of claim 7, wherein: The temperature control device for detecting the temperature of the heating area (11) in real time is installed on the shell member (400) and electrically connected between the conductive heating layer (200) and the power supply, and when the heating area (11) is detected to be in an overheating state, the temperature control device disconnects the circuit between the conductive heating layer (200) and the power supply.

10. The toasting apparatus of claim 7, wherein: A heat insulation material is installed between the shell member (400) and the heating structure.

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