Heating device and control method and application thereof

Abstract

The invention relates to the technical field of heating devices, in particular to a heating device and a control method and application thereof.The heating device comprises a shell, the shell is provided with an installation cavity, and the shell is provided with a supporting assembly, a guide opening communicating with the installation cavity, a heat conduction assembly connected with the supporting assembly and an elastic assembly; the supporting assembly comprises a guiding piece connected with the elastic assembly and penetrating through the guiding opening and a supporting shell connected with the guiding piece, the heat conduction assembly is at least partially arranged on the outer side of the supporting shell in a protruding mode, and the elastic assembly is used for driving the guiding piece to drive the supporting shell to move in the first direction or the second direction. When the heating device is in the storage state, the end face of the supporting assembly or the end face of the heat conduction assembly is close to and attached to the end face of the shell. The heating device is small in occupied space in the storage state, the temperature is controllable, and meanwhile the problems that accidents are likely to be caused in the open fire heating process, carbon deposition and blackening are likely to happen to the bottom of a dinner plate, cleaning is difficult, and sanitation is not likely to happen are solved.

Description

Technical Field

[0001] This invention relates to the field of heating device technology, specifically a heating device, its control method, and its application. Background Technology

[0002] When dining in a restaurant, to maintain the temperature and flavor of the food, the bottom of the plate is usually heated with an open flame, or external fuels such as alcohol or candles are used to slowly release heat. Ceramic plates have excellent heat retention and even heat dissipation properties; using ceramic plates to hold food and maintain its temperature can enhance the dining experience.

[0003] However, open flame or external fuel heating has the following drawbacks: First, alcoholic fuels have a low flash point and are easily volatile. If additional fuel is needed during the heat preservation process, the operator may add it while the plate is still hot or the open flame is not completely extinguished, which can easily cause flash fire or even deflagration, resulting in a safety accident. Second, the temperature of open flame heating is uncontrollable and can easily lead to local overheating, causing the sauce to evaporate and thicken or the bottom to burn, affecting the taste. Third, the smoke produced by incomplete combustion of fuel will cause soot to accumulate on the bottom of the ceramic plate, forming carbon residue that is difficult to remove and affecting hygiene and appearance.

[0004] Therefore, it is urgent to optimize the existing bottom heating method of plates to reduce the problem of the bottom of plates being blackened while ensuring safety and heat preservation, so as to better improve the dining experience. Summary of the Invention

[0005] Regarding the aforementioned problems with existing bottom heating methods for plates, such as uncontrollable open flame heating which can easily cause accidents and blackening of the plate bottom, the technical solution adopted by this invention is as follows: A heating device includes a housing with a mounting cavity, a support assembly, a guide opening communicating with the mounting cavity, a heat-conducting assembly connected to the support assembly, and an elastic assembly. The support assembly includes a guide member connected to the elastic assembly and passing through the guide opening, and a support housing connected to the guide member. The heat-conducting assembly protrudes at least partially from the outside of the support housing. The elastic assembly is used to drive the guide member to move the support housing along a first direction or a second direction, so that the heat-conducting assembly moves closer to or away from the object to be heated. When the heating device is in a retracted state, the end face of the support assembly or the heat-conducting assembly is close to and in contact with the end face of the housing.

[0006] Furthermore, in some embodiments of the present invention, the heat-conducting assembly includes a heating element, a heat-conducting portion close to the heating element and connected to the supporting housing, the supporting housing is provided with heat dissipation holes, the guide is disposed on the central axis and / or the periphery of the central axis of the supporting housing, and the heat-conducting assembly has at least a first height relative to the horizontal plane when the heating device is in a retracted state and a second height when the heating device is in a fully extended state.

[0007] Furthermore, in some embodiments of the present invention, the supporting housing is provided with a receiving groove, the heat-conducting component includes a heat insulation component located between the heating element and the supporting housing, the heat dissipation hole is disposed in the receiving groove, the receiving groove is provided with a wire passage, and the wire passage communicates with the guide or the outside.

[0008] Furthermore, in some embodiments of the present invention, the guide member includes a first guide portion extending along the central axis of the support housing, the elastic component includes a first elastic element connected to the first guide portion and the housing, and the heat dissipation holes are provided in a plurality of them and disposed on the periphery of the receiving groove, the heat dissipation holes being located on the outer periphery of the projection of the first guide portion.

[0009] Furthermore, in some embodiments of the present invention, the guide member includes a first buckle extending along the central axis of the support housing, the elastic component includes a second elastic member connected to the first buckle and the housing, the housing is provided with a fixing groove for limiting the second elastic member, and the second elastic member is a self-locking elastic buckle.

[0010] Furthermore, in some embodiments of the present invention, the housing includes a bottom shell and a bottom cover that enclose and form an installation cavity, the guide opening is disposed on the bottom cover, the bottom shell is provided with a bottom shell connecting portion, the bottom cover is provided with a bottom cover mating portion that is fixed in conjunction with the bottom shell connecting portion, a first guide post extending along a first direction or a second direction, the first guide portion is provided with a first connecting post, one of the first guide post or the first connecting post is provided with a limiting groove, the other of the first guide post or the first connecting post extends into the limiting groove and a first elastic member is sleeved on its outer side.

[0011] Furthermore, in some embodiments of the present invention, at least a portion of the heat dissipation holes are located on the lower side of the support housing, a first gap is provided between the bottom cover and the bottom of the support housing, the heat-conducting part is at least partially sleeved on the upper surface of the support housing, the receiving groove is provided with reinforcing ribs to lift the heat insulation member or the heating member, the heat insulation member or the heating member is located in the receiving groove or on the upper side of the receiving groove, and a second gap is provided between the heat dissipation holes and the heat insulation member or between the heat dissipation holes and the heating member.

[0012] Furthermore, in some embodiments of the present invention, one of the bottom cover and the first guide portion is provided with a second engaging portion, and the other of the bottom cover and the first guide portion is provided with a second guide portion. The second engaging portion cooperates with the second guide portion so that the first guide portion can slide relative to the bottom cover.

[0013] Another object of the present invention is to provide a control method for a heating device, comprising the heating device and control components as described above, and comprising the following steps: S1. Start the heating device and obtain the preset target temperature value; S2. The temperature signal of the heat-conducting component is collected in real time through the control component; S3. Compare the temperature signal with the target temperature value, and output a control signal based on the comparison result; S4. The elastic component drives the guide to move the support housing along the first direction so that the heat conduction component is close to the body to be heated, and the temperature of the heat conduction component is stabilized near the target temperature value for heat preservation, and the heating device is in the unfolded state. S5. After use, the heating device is turned off, the support housing moves in the second direction so that the heat-conducting component is away from the body to be heated, the elastic component and the guide are locked, and the heating device is in the storage state.

[0014] Another object of the present invention is to provide an application of a heating device, including the heating device described above, for heating and keeping the bottom of tableware warm.

[0015] The beneficial effects of this invention are as follows: 1. The heating device of the present invention occupies little space when stored, making it easy to carry and transport. Through the cooperation of the elastic component and the guide component, the supporting shell and the heat-conducting component can be moved along a first direction or a second direction, thereby changing the contact distance between the heat-conducting component and the object to be heated. In use, the heat generated by the heat source is first transferred to the heat-conducting component, and then transferred to the object to be heated. This achieves temperature control while preventing smoke and carbon particles generated by flame or fuel combustion from directly contacting the bottom of the plate. This solves the problems of accidents caused by open flame heating, carbon buildup and blackening of the bottom of the plate, difficulty in cleaning, and unsanitary conditions.

[0016] 2. The heating device of the present invention is simple and convenient to control, can ensure controllable temperature and uniform heating, and can avoid producing hard-to-remove carbon residue on the bottom of the tableware, thereby improving the appearance and lifespan of the tableware. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the unfolded state of a heating device according to the present invention.

[0018] Figure 2for Figure 1 AA sectional view.

[0019] Figure 3 for Figure 1 BB cross-sectional view and enlarged partial view.

[0020] Figure 4 This is a schematic diagram of the storage state of a heating device according to the present invention.

[0021] Figure 5 for Figure 4 CC sectional view and enlarged partial view.

[0022] Figure 6 This is an exploded view and a partially enlarged view of a heating device according to the present invention.

[0023] Figure 7 for Figure 6 Enlarged view of part D.

[0024] Figure 8 This is an exploded view and a partial enlarged view of a heating device according to the present invention.

[0025] Figure 9 for Figure 8 Enlarged view of part E.

[0026] Figure 10 This is a schematic diagram of another embodiment of the heating device of the present invention in its unfolded state.

[0027] Figure 11 for Figure 10 FF sectional view.

[0028] Figure 12 for Figure 10 GG cross-sectional view.

[0029] Figure 13 for Figure 10 The exploded diagram.

[0030] Figure 14 for Figure 10 Another perspective of the exploded view. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention, such as (up, down, left, right, front, back, etc.), are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0034] like Figure 1 , Figure 3 , Figure 6 A heating device is shown, comprising a housing 1, a mounting cavity 2, a support assembly 3, a guide opening 11 communicating with the mounting cavity 2, a heat-conducting assembly 4 connected to the support assembly 3, and an elastic assembly 5. The support assembly 3 includes a guide member 31 connected to the elastic assembly 5 and passing through the guide opening 11, and a support housing 32 connected to the guide member 31. The heat-conducting assembly 4 protrudes at least partially from the outside of the support housing 32. The elastic assembly 5 is used to drive the guide member 31 to move the support housing 32 along a first direction or a second direction, so that the heat-conducting assembly 4 moves closer to or away from the object to be heated.

[0035] The heating device of this invention occupies little space when stored, making it easy to carry and transport. Through the cooperation of the elastic component and the guide component, the supporting shell and the heat-conducting component can be moved along a first direction or a second direction, thereby changing the contact distance between the heat-conducting component and the object to be heated. In use, the heat generated by the heat source is first transferred to the heat-conducting component, and then transferred to the object to be heated. This achieves temperature control while preventing smoke and carbon particles generated by flame or fuel combustion from directly contacting the bottom of the plate. This solves the problems of accidents caused by open flame heating, carbon buildup and blackening of the bottom of the plate, difficulty in cleaning, and unsanitary conditions.

[0036] Specifically, when the heat-conducting component is close to the object being heated, the heat transfer efficiency increases and the heating temperature rises; when the distance is greater, the heat transfer efficiency decreases and the heating temperature drops. This variable-distance heating method replaces traditional fixed open flame or fuel heating, fundamentally solving the problems of excessive evaporation, thickening, or scorching of food juices due to uncontrollable temperature, thus maintaining the temperature and texture of the food.

[0037] Based on the above setup, the thermal conductivity of the heat-conducting components can be used to buffer and diffuse the concentrated heat from the heat source, thereby achieving uniform heating of the bottom of the object to be heated.

[0038] Optionally, in some embodiments, the heat-conducting component is raised to a certain height and comes into contact with the body to be heated at a fixed position.

[0039] As mentioned earlier, a cavity is provided at the bottom of the ceramic disc for the heating device to extend into. Through the cooperation of the elastic component, guide, and supporting shell, the heat-conducting component can move freely in either a first or second direction within the cavity. When the heating device is placed inside the cavity of the ceramic disc, the elastic force of the elastic component drives the heat-conducting component to move closer to or fit tightly against the bottom of the ceramic disc. This adapts to cavities of different depths or bottom shapes, eliminates heat transfer gaps, and improves heat conduction efficiency and insulation effect.

[0040] Optionally, in some embodiments, the heat-conducting component can lift the body to be heated to a certain height for heating and heat preservation, supported by the supporting housing.

[0041] As mentioned above, the plate is first placed on the surface of the heat-conducting component, which is then raised to a certain height. With the heat preservation effect of the heating device, the plate is raised so that diners can easily pick up the food from it.

[0042] Optionally, in some embodiments, the heat-conducting component has at least a first height relative to the horizontal plane when the heating device is in a retracted state and a second height when the heating device is in a fully extended state.

[0043] Optionally, in some embodiments, the heat-conducting component has a first height relative to the horizontal plane, a second height where the heating device is in a retracted state, a third height where the heating device is in a fully extended state, and a third height where the heating device is in a semi-extended state when the heat-conducting component comes into contact with the tableware.

[0044] Optionally, in some embodiments, the first direction and the second direction are up and down directions.

[0045] Optionally, in some embodiments, the first direction and the second direction are left and right directions.

[0046] Optionally, in some embodiments, the support component may be in close contact with the end face of the housing, or the end face of the heat-conducting component 4 may be in close contact with the end face of the housing 1. Of course, it is also possible for the support component to be in close contact with the end face of the housing, and the end face of the heat-conducting component 4 to be in close contact with the end face of the housing 1 at the same time.

[0047] Specifically, in some embodiments, the bottom of the supporting housing may be close to the upper side of the bottom cover, or the bottom of the heat-conducting part may be close to the upper side of the bottom cover. Of course, the bottom of the supporting housing may be close to the upper side of the bottom cover, and the bottom of the heat-conducting part may be close to the upper side of the bottom cover at the same time.

[0048] like Figure 1 , Figure 3 , Figure 10 The heating device shown includes a heat-conducting component 4 comprising a heating element 41 and a heat-conducting part 42 adjacent to the heating element 41 and connected to the support housing 32. The support housing 32 is provided with heat dissipation holes 321. The guide member 31 is disposed on the central axis and / or the periphery of the central axis of the support housing 32. The heat-conducting component 4 has at least a first height relative to the horizontal plane when the heating device is in a retracted state and a second height when the heating device is in a fully extended state.

[0049] As mentioned above, by placing guide components on the central axis and / or the periphery of the support housing, a centrally guided or multi-point balanced guide support structure is formed. When the heat-conducting component moves downward under external force, or returns to its original position under the action of the elastic component, it can effectively balance the forces in all directions, preventing the support housing from tilting, shaking, or getting stuck during movement. This ensures that the top surface of the heat-conducting component always remains parallel and close to the bottom of the object to be heated, minimizing contact thermal resistance and guaranteeing the stability of the heating effect.

[0050] Specifically, heat dissipation holes are provided on the support housing to form an air convection channel. Since the heating element generates high temperature during operation, the heat dissipation holes can promptly expel excess heat accumulated inside or below the support housing from the inside to the outside. On the one hand, this prevents excessive heat transfer downwards, which could damage the elastic component or other parts at the bottom of the housing; on the other hand, it prevents the temperature inside the support housing from becoming too high, which could cause the heating element to overheat and burn out, thereby extending the service life and operational safety of the entire heating device.

[0051] Optionally, in some embodiments, the area of ​​the heat-conducting part is greater than or equal to the area of ​​the upper surface of the supporting housing, which can improve the upward peripheral diffusion of heat.

[0052] Optionally, in some embodiments, the heating area of ​​the heating element is less than or equal to the area of ​​the upper surface of the support housing, which can improve the concentration of heat conduction and prevent heat from diffusing to the periphery of the support housing.

[0053] Alternatively, in some embodiments, such as Figure 1 As shown, the guide is located on the central axis of the supporting housing, suitable for miniaturized heating devices. Specifically, in this embodiment, the heating device in its retracted state is between 28-35mm, and the overall adjustable height range is between 28-52mm. Specifically, the length of the heating device is between 60-100mm, the width is between 60-100mm, and the height is between 28-35mm.

[0054] Alternatively, in some embodiments, such as Figure 10 As shown, the guide members are located on the central axis and periphery of the supporting housing, suitable for larger heating devices. Specifically, in this embodiment, the heating device in its retracted state is between 35-45mm, and the overall adjustable height range is between 35-65mm. Specifically, the length of the heating device is between 100-140mm, the width is between 100-140mm, and the height is between 35-65mm.

[0055] Optionally, in some embodiments, the guide is located on the periphery of the support housing.

[0056] Optionally, in some embodiments, the heating element is a graphene heating film.

[0057] Optionally, in some embodiments, the heating element is a PI heating film.

[0058] Optionally, in some embodiments, the thermally conductive part is made of silicone thermal conductor.

[0059] Alternatively, in some embodiments, the heat-conducting part is made of ceramic material.

[0060] Specifically, in this embodiment, a PI heating film is preferred. Compared to graphene heating films, PI substrates have better high-temperature resistance and insulation strength, enabling them to withstand the thermal shock of the heating device during full-power operation and avoiding the risk of short circuits due to substrate softening, resulting in a high safety factor. PI heating films have a fast response time, and the resistance of their internal metal heating circuits does not significantly decrease or drift over time, facilitating precise temperature control of the components and ensuring consistent heating performance over long-term use. This invention features a movable floating support structure, allowing direct soldering of wires to the PI heating film. Compared to the press-fit connection method of printed heating films, it offers stronger vibration and oxidation resistance, preventing malfunctions caused by poor contact.

[0061] Specifically, the large-sized heating device has a power of 80W and a resistance of 0.6-0.8Ω, while the small-sized heating device has a power of 40W and a resistance of 0.95-1.1Ω. The process involves PI hot pressing, where a layer of polyimide film is placed on top and bottom of the heating circuitry made of copper or alloy foil. The layers are then pressed together under high temperature and pressure (200-350℃, 5-15 MPa) to fuse the three layers into a flexible heating film body of 0.13-0.21 mm. After pressing, metal pads are exposed. Subsequently, tin is applied to the pads, and leads or components such as NTCs and temperature controllers are soldered to achieve electrical wiring. One side of the pads has 3M adhesive backing; users can directly attach it to the component by peeling off the release paper.

[0062] like Figure 3 , Figure 5 , Figure 6 The heating device shown has a supporting housing 32 with a receiving groove 322, a heat-conducting component 4 including a heat insulation component 43 located between the heating element 41 and the supporting housing 32, a heat dissipation hole 321 disposed in the receiving groove 322, and a wire passage 323 provided in the receiving groove 322, the wire passage 323 communicating with the guide component 31 or the outside.

[0063] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the present invention provides a heat insulation component between the heating element and the supporting housing, which blocks the ineffective transfer of heat to the supporting housing and the elastic component below, and promotes the heat to be concentrated and conducted upward to the heat-conducting part and the body to be heated, thereby reducing heat loss and improving energy utilization. At the same time, it also reduces the working environment temperature of the supporting housing and the internal elastic component, prevents the plastic parts from deforming due to high temperature, and thus extends the overall service life of the device.

[0064] Specifically, by setting a wire-passing port in the receiving groove and connecting it to the guide or the outside, a concealed and orderly wire channel is formed. Since the heating device has a floating and lifting function, this wire-passing structure can guide the power cord to avoid interference from moving parts, prevent the wire from getting tangled, pulled or worn during the up and down movement of the support housing, avoid the risk of short circuit caused by wire damage, and ensure the electrical safety and smooth lifting of the product.

[0065] Optionally, in some embodiments, the wire pass-through port is located at the bottom of the receiving groove, and the conductive wire or socket passes through the wire pass-through port through the guide and communicates with the control component of the mounting cavity.

[0066] Optionally, in some embodiments, the wire insertion port is located on the side or bottom of the receiving groove, and the conductive wire or plug extends out through the wire insertion port to the outside world and is connected to an external power source.

[0067] Optionally, in some embodiments, the size of the heat insulation element is smaller than the volume of the receiving groove, the heat insulation element is located inside the receiving groove, and the heating element is located on the upper side of the heat insulation element.

[0068] Optionally, in some embodiments, the size of the heat insulation element is larger than the volume of the receiving groove, and the heat insulation element is located above the receiving groove.

[0069] Optionally, in some embodiments, the size of the heat insulation element is smaller than the volume of the receiving groove, the heat insulation element is located inside the receiving groove, and the heating element is located inside the heat-conducting part.

[0070] As mentioned above, in some embodiments, the accommodating groove can position the heating element and the heat insulation element, forming a highly enclosed installation space and ensuring the structural stability of the heat-conducting component during movement. Simultaneously, in conjunction with the heat dissipation holes within the accommodating groove, a micro-circulation airflow can be formed inside the groove, promptly dissipating residual heat that the heat insulation element cannot completely block, preventing excessive heat accumulation in the confined installation cavity and thus preventing overheating and burnout of the heating element, further improving the reliability of the heating operation.

[0071] Optionally, in some embodiments, the insulation element is made of insulating cotton.

[0072] Optionally, in some embodiments, the insulation element is made of flame-retardant fiberboard with heat-insulating properties.

[0073] like Figure 2 , Figure 3 , Figure 6 The heating device shown includes a guide member 31 comprising a first guide portion 311 extending along the central axis of the support housing 32, an elastic component 5 comprising a first elastic element 51 connected to the first guide portion 311 and the housing 1, and a plurality of heat dissipation holes 321 provided and disposed around the accommodating groove 322, the heat dissipation holes 321 being located on the outer periphery of the projection of the first guide portion 311.

[0074] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the present invention provides a first guide portion extending along the central axis of the support housing and connecting it with a first elastic element. Compared with edge guidance, the axial structure can ensure that the point of application of the driving force coincides with the guide center, effectively avoiding tilting torque caused by uneven force. The support housing can maintain vertical linear and stable lifting and lowering, reducing frictional resistance during movement and preventing lifting jamming.

[0075] Specifically, by setting multiple heat dissipation holes around the accommodating groove and limiting them to the outer periphery of the projection of the first guide portion, the hot airflow generated by the heat-generating component is mainly discharged from the outer periphery of the supporting shell, forming a bypass heat dissipation. This avoids the high-temperature hot airflow directly scouring the first guide portion and the first elastic component located in the center, and prevents the first elastic component from thermal decay or annealing due to being in the center of high-temperature heat flow for a long time, thereby improving the overall operational reliability and service life of the device.

[0076] In addition, the heat dissipation holes are arranged on the outside of the projection of the first guide part, while the central area of ​​the support shell is preserved. This ensures the structural strength of the central stress point of the support shell and avoids the risk of insufficient strength at the connection point and easy breakage or deformation due to too many openings in the central area.

[0077] Optionally, in some embodiments, the first elastic element is a spring, and the heat-conducting assembly has at least a first height relative to the horizontal plane, where the heating device is in a retracted state under external force, and a second height where the heating device is in a fully extended state. Specifically, the heating device is in a retracted state when a weight compresses the first elastic element downwards.

[0078] Optionally, in some embodiments, the heat-conducting component has a first height relative to the horizontal plane, where the heating device is in a retracted state under external force, a second height where the heating device is in a fully extended state, and a third height where the heating device is in a semi-extended state when the heat-conducting component comes into contact with the tableware.

[0079] like Figure 2 , Figure 3 , Figure 7 The heating device shown includes a guide member 31 comprising a first buckle 312 extending along the central axis of the support housing 32, and an elastic component 5 comprising a second elastic member 52 connected to the first buckle 312 and the housing 1. The housing 1 is provided with a fixing groove 12 for limiting the second elastic member 52, and the second elastic member 52 is a self-locking elastic buckle.

[0080] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, when the first latch is engaged, the self-locking structure can resist the reverse force generated by the supporting shell during compression or rebound, ensuring that the heat-conducting component will not detach from the shell during frequent floating and lifting. Simultaneously, the fixing groove restricts the displacement of the elastic element, ensuring that the output direction of the elastic force always acts stably along the axial direction, avoiding structural failure caused by the swaying of the elastic element.

[0081] Furthermore, by utilizing the cooperation between the first buckle and the second elastic element, the present invention can simultaneously achieve floating guidance and limiting anti-detachment, effectively reducing the number of parts and making the overall structure more concise and compact.

[0082] Optionally, in some embodiments, the heat-conducting component has at least a first height relative to the horizontal plane, where the heating device is in a retracted state under the action of the first latch and the second elastic member, and a second height where the heating device is in a fully extended state. Specifically, the heating device is in a retracted state when the first latch is engaged with the second elastic member.

[0083] Optionally, in some embodiments, the heat-conducting component has a first height relative to the horizontal plane, in which the heating device is in a retracted state under the action of the first buckle and the second elastic member, a second height in which the heating device is in a fully extended state, and a third height in which the heating device is in a semi-extended state when the heat-conducting component comes into contact with the tableware.

[0084] Alternatively, in some embodiments, such as Figure 3 , Figure 5 , Figure 7 As shown, the fixing groove 12 and the second elastic member 52 are fixed by a snap-fit ​​connection. Specifically, the fixing groove is provided with a connecting groove 121, and the outer side of the self-locking elastic snap-fit ​​is provided with a snap 521, so that the self-locking elastic snap-fit ​​is fixed in the fixing groove.

[0085] Optionally, in some embodiments, the second elastic element is located at the central axis of the support housing.

[0086] Optionally, in some embodiments, a plurality of second elastic elements are located on the periphery of the support housing near the central axis or on the periphery of the edge of the support housing, and the plurality of second elastic elements are symmetrically arranged.

[0087] like Figure 3 , Figure 5 , Figure 8 The heating device shown includes a housing 1 comprising a bottom shell 6 and a bottom cover 7 that enclose and form an installation cavity 2. A guide opening 11 is disposed on the bottom cover 7. The bottom shell 6 is provided with a bottom shell connecting portion 60. The bottom cover 7 is provided with a bottom cover mating portion 70 that is fixed to the bottom shell connecting portion 60 and a first guide post 71 extending along a first direction or a second direction. The first guide portion 71 is provided with a first connecting post 3111. One of the first guide post 71 or the first connecting post 3111 is provided with a limiting groove 73. The other of the first guide post 71 or the first connecting post 3111 extends into the limiting groove 73 and a first elastic member 51 is sleeved on its outer side.

[0088] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the invention utilizes the long-distance mating contact surface between the first guide post on the bottom cover and the first connecting post of the guide member to provide axial support and lateral constraint for the lifting and lowering of the supporting housing. Compared to a simple hole-shaft mating, this ensures that the heat-conducting component remains vertical during lifting and lowering, preventing swaying or jamming.

[0089] By sleeved on the outside of the first guide post or the first connecting post, and using the internal post as the core of the spring, the long-stroke spring is effectively prevented from bending or becoming unstable during compression. This ensures that the elastic element always extends and contracts along the axial direction, guarantees that the upward resisting force is uniform and stable, prevents noise caused by spring deformation and friction, and avoids interference between the spring and other internal components.

[0090] Furthermore, by utilizing the insertion and engagement of the limiting groove and the column, not only is the guiding function achieved, but the physical limit of the lifting stroke is also naturally formed. This structure can precisely limit the upper and lower limit positions of the heat conduction components, preventing the support shell from excessively popping out and detaching from the bottom cover under the action of the elastic element. It also prevents the internal components from being crushed when subjected to excessive pressure, playing a crucial role in preventing mistakes and providing protection.

[0091] In this embodiment, the housing is designed as a separate unit consisting of a bottom shell and a bottom cover, and is fixed to the bottom cover by a connecting part of the bottom shell and a mating part of the bottom cover. Optionally, in some embodiments, the bottom shell and the bottom cover are fixed by means of snap-fit ​​connection, fastener connection, magnetic connection, mortise and tenon connection, groove connection, interference fit, etc.

[0092] Optionally, in some embodiments, the first guide post 71 is provided with a limiting groove 73, the first connecting post 3111 extends into the limiting groove 73 and the first elastic member 51 is sleeved on its outer side.

[0093] Optionally, in some embodiments, the first connecting post 3111 is provided with a limiting groove 73, the first guide post 71 extends into the limiting groove 73 and the first elastic member 51 is sleeved on its outer side.

[0094] Specifically, such as Figure 9 As shown, the bottom shell connecting part is a connecting hole, the bottom cover mating part is a connecting post, and the fastener 65, such as a screw, passes through the bottom shell connecting part from the bottom and connects to the bottom cover mating part.

[0095] Specifically, the bottom of the base shell is provided with an anti-slip pad 66. The anti-slip pad can cover the connection part of the base shell, which not only makes it aesthetically pleasing but also prevents foreign objects or moisture from further entering the installation cavity.

[0096] like Figure 2 , Figure 3 , Figure 5 The heating device shown has at least a portion of the heat dissipation holes 321 located on the lower side of the supporting housing 32. A first gap 81 is provided between the bottom cover 7 and the bottom of the supporting housing 32. The heat-conducting part 42 is at least partially sleeved on the upper surface of the supporting housing 32. The receiving groove 322 is provided with reinforcing ribs 324 for lifting the heat insulation member 43 or the heating member 41. The heat insulation member 43 or the heating member 41 is located inside the receiving groove 322 or on the upper side of the receiving groove 322. A second gap 82 is provided between the heat dissipation holes 321 and the heat insulation member 43 or between the heat dissipation holes 321 and the heating member 41.

[0097] Specifically, when the heating device is in the retracted state, the bottom of the outer periphery of the heat-conducting part is close to the bottom cover, which can block the first gap.

[0098] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the invention elevates the heat insulation component or heating component by providing reinforcing ribs within the receiving groove, forming a second gap between it and the bottom of the receiving groove. This not only enhances the structural strength of the supporting shell using the reinforcing ribs, but also reduces the direct contact area between the high-temperature heating component and the plastic supporting shell by forming a suspended support structure, thus blocking the heat conduction path. Simultaneously, in conjunction with the heat dissipation holes located on the lower side of the supporting shell, external cold air can enter the second gap through the heat dissipation holes and form an air convection layer, effectively carrying away the heat accumulated at the bottom of the heating component. This prevents the supporting shell from softening, melting, or deforming due to prolonged localized heating, thereby improving the product's durability and safety.

[0099] Specifically, a first gap is provided between the bottom cover and the bottom of the support housing. This gap serves as a floating clearance space, ensuring that the support housing has sufficient downward displacement when pressed down by the heated body. The first gap also acts as a bottom heat insulation air layer, which can block heat transfer to the bottom cover even when the heating element operates at a high temperature, preventing the bottom cover from overheating and achieving a good external heat insulation effect.

[0100] As mentioned above, the heat-conducting part adopts a covering structure that is at least partially fitted onto the upper surface of the support shell, which ensures that the contact area between the heat-conducting part and the body to be heated above is maximized, reducing heat loss at the edges and improving heating efficiency. The covering structure forms a physical shield at the top of the support shell, which can prevent soup or water stains from seeping into the internal circuit or receiving groove from the connection between the support shell and the heat-conducting part in the dining table setting, thus playing a certain role in waterproofing and stain protection.

[0101] Optionally, in some embodiments, when the heating device is in a retracted state, the first gap can reduce the residual heat from being transferred directly towards the bottom cover. Specifically, the distance of the first gap varies with the overall height of the heating device, and the distance of the first gap when the heating device is fully extended is greater than the distance of the first gap when the heating device is retracted.

[0102] Optionally, in some embodiments, the reinforcing ribs extend upward from the lower side of the receiving groove and lift the heat insulation member, the area of ​​the heat insulation member is smaller than the area of ​​the receiving cavity, and the heat dissipation holes are located on the periphery of the heat insulation member.

[0103] Optionally, in some embodiments, the reinforcing rib extends from the side of the receiving groove toward the central axis, the area of ​​the heating element is larger than the area of ​​the heat insulation element, the heat insulation element passes through the opening formed by the reinforcing rib from top to bottom and abuts against the bottom of the receiving groove, and the reinforcing rib supports the heating element.

[0104] Optionally, in some embodiments, the reinforcing ribs extend from the side of the receiving groove toward the central axis and are provided in two sets. The area of ​​the heating element is larger than the area of ​​the heat insulation element. The heat insulation element passes through the opening formed by the first set of reinforcing ribs from top to bottom and abuts against the second set of reinforcing ribs. The second set of reinforcing ribs supports the heat insulation element, and the first set of reinforcing ribs supports the heating element.

[0105] like Figure 3 , Figure 7 , Figure 9 The heating device shown has a second engaging portion 74 on one of the bottom cover 7 and the first guide portion 311, and a second guide portion 313 on the other of the bottom cover 7 and the first guide portion 311. The second engaging portion 74 cooperates with the second guide portion 313 so that the first guide portion 311 can slide relative to the bottom cover 7.

[0106] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the present invention, through the cooperation of the second engaging part and the second guiding part, forms an anti-rotation mechanism while the first guiding part slides axially relative to the bottom cover, which restricts the degree of freedom of the supporting shell to rotate around the central axis, ensuring that the heat conduction component always maintains a fixed angle direction during the floating process, preventing the safety hazard of internal wires being entangled, twisted or even broken due to component rotation, and improving the reliability of the electrical system.

[0107] Specifically, when the elastic component drives the heat-conducting component to reset upward, the second engaging part can abut against or limit the second guide part, limiting the maximum upward displacement of the heat-conducting component and preventing the support housing from accidentally falling off or popping out from the bottom cover due to the elastic force when it is not under external pressure.

[0108] In addition, the second engaging part cooperates with the second guiding part, increasing the contact area and constraint points of the guide, which can more effectively eliminate movement gaps, reduce the swaying and tilting of the support shell during the lifting process, and make the lifting process smoother and more stable.

[0109] Optionally, in some embodiments, after assembly, under the gravity of the supporting shell, the movable distance of the first elastic body is less than the maximum displacement distance between the second engaging part and the second guide part, so that when the heating device is in the fully extended state, when the supporting shell tilts in the left and right direction, the second guide part cannot disengage from the second engaging part to form a limit.

[0110] Specifically, the second guide part is a linear guide rail, and the second engaging part is a slider that cooperates with the second guide part.

[0111] like Figure 5 , Figure 6 , Figure 7The heating device shown includes a housing 1 comprising a light guide plate 9 connected to the bottom shell 6 and / or the bottom cover 7. The light guide plate 9 has a light guide plate opening 94 through which the guide member 31 or the bottom cover 7 passes, a support portion 91 arranged along the outer periphery of the light guide plate opening 94, a positioning groove 92 located in the support portion 91, and a light strip 93 located in the positioning groove 92. The positioning groove 92 has multiple positioning grooves, and the end of the positioning groove 92 is provided with a guide surface 921.

[0112] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the invention forms a surrounding light-emitting structure by setting a light guide plate and a light strip between the bottom shell and the bottom cover. The light generated by the light strip is refracted and diffused by the light guide plate, forming a soft, uniform, and non-glaring halo or ring of light. This not only serves a decorative purpose, enhancing the upscale dining atmosphere, but also acts as an intuitive indicator of the device's operating status, allowing users to know the device's operation without touching it, thus improving the human-computer interaction experience.

[0113] Specifically, by providing guide surfaces with chamfered or curved structures at the ends of the positioning groove, the guide surfaces play a role in guiding and correcting misalignment during assembly. When installing light strips or closing the housing, the guide surfaces can guide the components to slide smoothly into the positioning groove, avoiding hard interference or component damage caused by misalignment.

[0114] Furthermore, the coordinated design of the support and positioning groove provides a rigid support platform and installation limit for the flexible light strip. The positioning groove firmly restrains the light strip around the periphery of the light guide plate, preventing it from shifting or falling off during subsequent use and ensuring the stability of the light guiding effect. At the same time, the light guide plate, as a structural component, is clamped between the bottom shell and the bottom cover, which also increases the sealing and overall rigidity of the housing assembly.

[0115] Optionally, in some embodiments, the guide surface is an inclined surface or an arc surface.

[0116] Specifically, such as Figure 9 As shown, the bottom shell connecting part is a connecting hole, the bottom cover mating part is a connecting post, the light guide plate is provided with a light guide plate connecting hole 90, and the fastener 65, such as a screw, passes through the bottom shell connecting part and the light guide plate connecting hole from the bottom side, and then connects to the bottom cover mating part.

[0117] Specifically, such as Figure 9 As shown, the light guide plate is provided with a light guide plate connecting post 95 into which the bottom cover mating part extends. The light guide plate connecting hole 90 passes through the light guide plate connecting post 95. The fastener 65, such as a screw, passes through the bottom shell connecting part and the light guide plate connecting hole from the bottom side, and then connects to the bottom cover mating part.

[0118] Specifically, the light guide plate is made of a light-transmitting material. The light guide plate can be made of glass or acrylic.

[0119] Specifically, such asFigure 11 , Figure 12 , Figure 13 , Figure 14 As shown, the bottom cover mating part is a connecting post, the light guide plate is provided with a light guide plate connecting hole 90, and the fastener 65, such as a screw, passes through the light guide plate connecting hole from the bottom and is then connected to the bottom cover mating part.

[0120] Specifically, such as Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown, the bottom cover mating part is a connecting post, and the light guide plate is provided with a light guide plate connecting post 95 for the bottom cover mating part to extend into. The light guide plate connecting hole 90 passes through the light guide plate connecting post 95, and the fastener 65, such as a screw, passes through the light guide plate connecting hole from the bottom and is then connected to the bottom cover mating part.

[0121] like Figure 2 , Figure 8 , Figure 9 The heating device shown has a bottom shell 6 with a control component 63, a battery component 64 electrically connected to the control component 63, a first bottom shell receiving groove 61, and a second bottom shell receiving groove 62. The bottom cover 7 has an extension 75 extending toward the bottom shell 6. A first guide post 71 is disposed in the extension 75. The first bottom shell receiving groove 61 is used to limit the control component 63 or the battery component 64, and the second bottom shell receiving groove 62 is used to limit the extension 75.

[0122] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the invention, by providing a first bottom shell receiving groove and a second bottom shell receiving groove on the bottom shell, can utilize the internal space of the bottom shell to make the product more compact and thinner; moreover, the receiving grooves provide physical restraint for the control components, battery components, and the extension of the bottom cover. During product movement, drops, or transportation, this structure can effectively prevent internal components from shifting, shaking, or falling off, improving the overall structural stability and shock resistance reliability of the device.

[0123] Specifically, by setting an extension in the bottom cover and placing the first guide post therein, and inserting the extension into the receiving groove of the second bottom shell, the contact area between the bottom cover and the bottom shell is increased, the support strength of the root of the first guide post is strengthened, and it can withstand greater lateral shear force and is not easy to break. By utilizing the depth space of the bottom shell, the height part of the guide mechanism is hidden inside the bottom shell, thereby effectively reducing the overall thickness of the heating device while ensuring that the guide stroke remains unchanged, thus meeting the design requirements of modern tableware to be thinner and more aesthetically pleasing.

[0124] Optionally, in some embodiments, the PI heating film has a heating temperature of 120-130°C, and the battery assembly includes contact probes, a charging port, and a rechargeable battery with specifications of 32Wh / 6.4V / 5000mAh, a power of 80W, and a battery life of 2 hours.

[0125] Optionally, in some embodiments, the PI heating film has a heating temperature of 120-130°C, and the battery assembly includes contact probes, a charging port, and a rechargeable battery with specifications of 12.8Wh / 6.4V / 2000mAh, a power of 40W, and a battery life of 30 minutes.

[0126] Optionally, in some embodiments, the control components include a battery control board, a power control board, and a control board.

[0127] The battery control board is used to detect battery status to prevent overcharging and over-discharging, detect charging temperature, and detect discharge current.

[0128] The power control board is used to manage the charging status, including no charging, charging, and fully charged states, while also monitoring the charging process, such as battery status and temperature.

[0129] The control board is used to control the lights, PI heating film, temperature sensor (NTC), and manage the power control board to achieve discharge monitoring and electrothermal constant temperature control.

[0130] Optionally, in some embodiments, the battery assembly uses lithium iron phosphate batteries, which have a high safety factor and will not explode or catch fire, thus addressing safety concerns about energy storage batteries.

[0131] Optionally, in some embodiments, the heating device is at a second height when fully extended, and the distance of the first gap is large, so that the heating element at the top is far away from the battery assembly at the bottom, reducing the safety issues of the battery assembly.

[0132] When the heating device is in its retracted state, it is at its first height. Even when the heating element is in a heated state, the setting of the first gap and the heat insulation can reduce the direct transfer of heat to the bottom cover, thereby reducing the safety risks of the battery assembly.

[0133] Optionally, in some embodiments, the battery assembly or control assembly is located in the first bottom housing recess, which can reduce the impact on the lifespan of electronic components when heat dissipates from the heating element. To improve the stability of the heating device's lifting and lowering, the second bottom housing recess is located in the middle of the bottom housing or near the central axis.

[0134] Specifically, by integrating a battery component and electrically connecting it to the control component, the heating device achieves energy self-sufficiency and wireless operation. Compared to the location limitations imposed by traditional power cords, this invention eliminates the safety hazards caused by cables tangling around the dining table. Users can freely place the heating device as needed, improving the product's flexibility and portability, and optimizing the dining experience.

[0135] Optionally, in some embodiments, the first guide portion is provided with an elastic buckle 3112, and the bottom cover is provided with a bottom cover abutting portion 76 that abuts against the elastic buckle. The maximum height of the support housing is limited by the elastic buckle abutting against the bottom cover abutting portion.

[0136] Optionally, in some embodiments, the first guide portion is provided with an elastic buckle 3112, the extension portion 75 is provided with an extension opening 751 for the elastic buckle 3112 to extend out, and the bottom cover is provided with a bottom cover abutting portion 76 that abuts against the elastic buckle. In some embodiments, the conductive wire can be inserted into the mounting cavity through the extension opening.

[0137] Optionally, in some embodiments, the bottom cover is provided with a bottom cover engaging portion 77 for engaging the control component or the battery component, so as to improve the limiting effect of the control component or the battery component.

[0138] A method for controlling a heating device, comprising the heating device and control component 63 as described above, includes the following steps: S1. Start the heating device and obtain the preset target temperature value; S2. The temperature signal of the heat-conducting component 4 is collected in real time by the control component 63; S3. Compare the temperature signal with the target temperature value, and output a control signal based on the comparison result; S4. The elastic component 5 drives the guide 31 to move the support housing 32 along the first direction so that the heat conduction component 4 is close to the body to be heated, and the temperature of the heat conduction component 4 is stabilized near the target temperature value for heat preservation, and the heating device is in the unfolded state. S5. After use, the heating device is turned off, the support housing 32 moves along the second direction so that the heat conduction component 4 is away from the body to be heated, the elastic component 5 is locked with the guide 31, and the heating device is in the storage state.

[0139] This invention uses a control component to collect the temperature signal of the heat-conducting component in real time and dynamically compare it with a preset target temperature value. Based on the comparison result, a control signal is output to drive the elastic component to adjust the position of the support shell, thereby changing the distance between the heat-conducting component and the object to be heated. When the temperature in the tableware is lower than the target value, the support shell moves along a first direction to bring the heat-conducting component closer to the object to be heated, increasing heat conduction efficiency and raising the temperature. When the temperature reaches the target value, the position adjustment maintains the heat conduction efficiency, stabilizing the temperature near the target value. This solves the problem of uncontrollable temperature in traditional heating methods, effectively avoiding food burning or excessive evaporation of juices due to localized overheating, and improving the accuracy of heating and the stability of food texture.

[0140] After heating is completed, the heating device can be automatically shut off. The supporting shell is moved along the second direction by external force, so that the heat-conducting component is away from the object to be heated. At the same time, the elastic component and the guide are locked, so that the heating device enters the storage state. This avoids the waste of residual heat caused by the heat-conducting component being close to the object to be heated for a long time. The stored heating device is smaller and more compact, making it easier to store and carry, and optimizing the user experience.

[0141] By dynamically adjusting the distance between the heat-conducting component and the object to be heated, the long-term high-temperature operation of the heat-conducting component, as is common in traditional heating methods, is avoided. This reduces the wear and tear on the heat-conducting component, supporting shell, and related elastic components caused by high temperatures. Furthermore, when stored, the heat-conducting component is far from the heat source, further reducing heat accumulation during non-operating periods, slowing down material aging, and thus extending the overall lifespan of the heating device and reducing long-term operating costs for users.

[0142] This invention improves heat conduction efficiency by dynamically adjusting the position of the heat-conducting components only when heating is required, and reduces heat conduction efficiency by adjusting the position during the heat preservation or storage stage. This avoids the energy waste of continuous high power output in traditional heating methods and improves energy utilization efficiency.

[0143] Specifically, in some embodiments, the control module includes a clock module, and the control method includes step S101, inputting the heating time and / or presetting the start time of the heating. For dishes with little broth, to avoid prolonged heating causing the bottom of the dish to burn or the broth to evaporate and thicken, the heating time and / or preset start time can be input after starting the heating device. During the distribution process in the kitchen, the plates can be prepared first, and the preset heating device can be placed at the bottom of the plate and in an extended state. After the dish is placed on the plate, the preset time arrives and the heating device starts. This ensures that the dish maintains its temperature and texture after being served, and slows down the cooling process during the meal. After the preset time arrives, the heating device stops heating, avoiding the need for waiters to adjust the heating time and temperature for each dish after it is placed on a plate, thus improving serving efficiency.

[0144] Specifically, based on the above embodiments, in some embodiments, the control module is equipped with a wireless module, and the control method includes step S102, which remotely and synchronously controls the heating time or heating temperature by wirelessly controlling the heating device. In some embodiments, for large banquets in restaurants, the dishes for each table need to be allocated, and the soup for each table is different. Operators can connect to the heating device via Bluetooth, infrared, or WIFI. When the dishes are being allocated in the kitchen, the plates can be prepared first, and the activated heating device can be placed at the bottom of the plate and in the extended state. After the dishes are placed on the plates, the operators can remotely control the heating device for the same dish to start. After the dishes and heating devices are served on the table, the dishes can maintain their temperature and taste, and the cooling of the dishes can be slowed down during the meal. The operators can gradually reduce the heat preservation temperature according to the meal time to slow down the evaporation of the soup until the heating device stops heating. This avoids the need for waiters to adjust the heating time and temperature of each dish after it is placed on the plate, which affects the efficiency of serving.

[0145] Specifically, based on the above implementation methods, in some embodiments, the support component is connected to a pressure sensor. When the heating device is started, in step S4, the heat-conducting component comes into contact with the plate and is pressed down. The sensor is triggered, the control component determines that there is a load, and immediately starts the heating element to heat.

[0146] Specifically, based on the above embodiments, in some examples, the control method includes step S103, whereby the control component reads the passive RFID tag on the dedicated plate. Specifically, the heating device is equipped with an NFC / RFID reader; a passive RFID tag is affixed to the bottom of the dedicated plate, and the tag contains the type of dish or suggested temperature data. When the plate is placed on the heating device, the reader reads the tag information. Based on the read information, the control component automatically retrieves the corresponding PID temperature control parameters from the database.

[0147] Specifically, based on the above embodiments, in some embodiments, the control component presets a temperature-time curve, and the control method includes step S104. According to the preset temperature-time curve for the dish, in some embodiments, for braised dishes, the control component sets three stages: Stage 1 is the first 10 minutes before serving, with full power heating to quickly raise the plate to 85°C and release the aroma; Stage 2 is the first 20 minutes of the meal, with power reduced to maintain 70°C to ensure the food is hot enough to eat; Stage 3 is the later part of the meal, with the temperature further reduced to 55°C to maintain a slight warmth and prevent excessive evaporation that could cause the dish to become too salty. By controlling the temperature in stages, the flavor decay of the dish is delayed to the greatest extent while maintaining its warmth.

[0148] Specifically, based on the above implementation methods, in some embodiments, after the heating device is started and the heating element stops working, the NTC temperature sensor continuously measures and detects the temperature and displays the temperature on the interactive screen of the heating device, or displays the temperature on a remotely controlled device, so as to avoid burns to the operator due to overheating of the heat-conducting part when storing the heating device.

[0149] An application of a heating device, including the heating device described above, for heating and keeping the bottom of tableware warm.

[0150] When the heating device of the present invention is applied to the bottom of tableware such as ceramic plates or dinner plates, by dynamically adjusting the distance between the heat-conducting component and the bottom of the tableware, the heating temperature can be kept stable within the preset ideal range. This avoids local overheating caused by uncontrollable temperature in traditional open flame or fuel heating, thereby effectively preventing excessive evaporation and thickening of food juices, scorching of the bottom, or loss of nutrients. It maximizes the preservation of the food's best taste, flavor, and nutrition, and enhances the dining experience.

[0151] The heating device of this invention uses non-fuel heating methods such as electric heating film, which fundamentally eliminates the source of smoke generation, avoids direct contact with and blackening of the bottom of tableware, and eliminates the need to remove stubborn carbon deposits. This not only reduces the cleaning burden but also ensures the hygiene and aesthetics of the tableware.

[0152] The heat-conducting component of this invention can evenly transfer heat to the entire bottom of the tableware or the area containing food, avoiding uneven local heating and ensuring that all food can be kept at a suitable eating temperature simultaneously.

[0153] The constant low-temperature heating mode avoids the damage to tableware materials such as ceramics and purple clay caused by traditional high-temperature burning, preventing cracking or glaze damage due to thermal expansion and contraction. At the same time, the reduced number of cleaning and wiping times also reduces human-caused wear and tear on the tableware, effectively extending its service life and reducing long-term tableware replacement costs for users.

[0154] Specifically, the dimensions of the heating device are: length between 60-140mm, width between 60-140mm, and height between 28-65mm.

[0155] Example 1 like Figure 1 , Figure 3 , Figure 6 , Figure 10 A heating device is shown, comprising a housing 1 with a mounting cavity 2, a support assembly 3, a guide opening 11 communicating with the mounting cavity 2, a heat-conducting assembly 4 connected to the support assembly 3, and an elastic assembly 5. The support assembly 3 includes a guide member 31 connected to the elastic assembly 5 and passing through the guide opening 11, and a support housing 32 connected to the guide member 31. The heat-conducting assembly 4 protrudes at least partially from the outside of the support housing 32. The elastic assembly 5 drives the guide member 31 to move the support housing 32 along a first direction or a second direction, so that the heat-conducting assembly 4 moves closer to or away from the object to be heated. The first and second directions are vertical. When the heating device is in a retracted state, the bottom of the support assembly is close to and in contact with the end face of the housing.

[0156] This invention, through the cooperation of the elastic component 5 and the guide component 31, enables the supporting housing 32 and the heat-conducting component 4 to move along a first or second direction, thereby changing the contact distance between the heat-conducting component 4 and the object to be heated. In use, the heat generated by the heat source is first transferred to the heat-conducting component 4, and then transferred by the heat-conducting component 4 to the object to be heated. This achieves temperature control while preventing smoke and carbon particles generated by flame or fuel combustion from directly contacting the bottom of the plate. This solves the problems of accidents easily caused by open flame heating, the easy accumulation of carbon and blackening on the bottom of the plate, difficulty in cleaning, and unsanitary conditions. The heating device of this invention occupies little space when stored, making it easy to carry and transport.

[0157] Example 2 Example 2, based on Example 1, also has the following implementation method: like Figure 1 , Figure 3The heating device shown includes a heat-conducting component 4 comprising a heating element 41 and a heat-conducting part 42 adjacent to the heating element 41 and connected to the support housing 32. The support housing 32 is provided with heat dissipation holes 321. The guide member 31 is disposed on the central axis of the support housing 32. The heat-conducting component 4 has at least a first height relative to the horizontal plane when the heating device is in a retracted state and a second height when the heating device is in a fully extended state.

[0158] like Figure 1 As shown, the guide member 31 is located on the central axis of the supporting housing, suitable for miniaturized heating devices. Specifically, in this embodiment, the height of the heating device in its retracted state is 30mm, and the overall adjustable height range is between 30-50mm. The heating device is 80mm long, 80mm wide, and 30mm high. The heating element 41 uses a PI heating film. The heat-conducting part 42 uses a silicone heat conductor.

[0159] Example 3 The difference between Example 3 and Example 2 is that, The guide member 31 is disposed on the central axis and the periphery of the central axis of the support housing 32.

[0160] like Figure 10 As shown, the guide member 31 is located on the central axis and periphery of the supporting housing 32, suitable for larger heating devices. Specifically, in this embodiment, the height of the heating device in its retracted state is 40mm, and the overall adjustable height range is between 40-60mm. The heating device is 120mm long, 120mm wide, and 40mm high. The heating element 41 is a graphene heating element. The heat-conducting part 42 is made of ceramic material.

[0161] Example 4 Based on Example 2, Example 4 also has the following implementation method: like Figure 3 , Figure 5 , Figure 6 The heating device shown includes a supporting housing 32 with a receiving groove 322, a heat-conducting component 4 including a heat insulation component 43 located between the heating element 41 and the supporting housing 32, a heat dissipation hole 321 disposed in the receiving groove 322, and a wire through-hole 323 provided in the receiving groove 322, the wire through-hole 323 communicating with the guide component 31. The heat insulation component 43 is made of heat-insulating cotton.

[0162] Example 5 Example 5, based on Example 2, also has the following implementation method: like Figure 2 , Figure 3 , Figure 6The heating device shown includes a guide member 31 comprising a first guide portion 311 extending along the central axis of the support housing 32, an elastic component 5 comprising a first elastic element 51 connected to the first guide portion 311 and the housing 1, and a plurality of heat dissipation holes 321 provided and disposed around the accommodating groove 322, the heat dissipation holes 321 being located on the outer periphery of the projection of the first guide portion 311.

[0163] The heat-conducting component 4 has a first height relative to the horizontal plane when the heating device is in a retracted state under the action of external force, a second height when the heating device is in a fully extended state, and a third height when the heat-conducting component 4 is in contact with the tableware and the heating device is in a semi-extended state.

[0164] Example 6 Example 6, based on Example 1, also has the following implementation method: like Figure 2 , Figure 3 , Figure 7 The heating device shown includes a guide member 31 comprising a first buckle 312 extending along the central axis of the support housing 32, and an elastic component 5 comprising a second elastic component 52 connected to the first buckle 312 and the housing 1. The housing 1 is provided with a fixing groove 12 for limiting the second elastic component 52. The second elastic component 52 is a self-locking elastic buckle, which is disposed along the central axis of the support housing 32.

[0165] The heat-conducting component 4 has a first height relative to the horizontal plane, in which the heating device is in a retracted state under the action of the first buckle 312 and the second elastic member 52, a second height in which the heating device is in a fully extended state, and a third height in which the heating device is in a semi-extended state when the heat-conducting component 4 comes into contact with the tableware.

[0166] When preparing for heating, the operator presses down on the heat-conducting component 4 with their hand to ensure that the heating device is fully extended.

[0167] After heating is complete, the operator presses down on the heat-conducting component 4 to retract the heating device.

[0168] Example 7 Example 7, based on Example 6, also has the following implementation method: like Figure 3 , Figure 5 , Figure 7 As shown, the fixing groove 12 and the second elastic member 52 are fixed by a snap-fit ​​connection. Specifically, the fixing groove is provided with a connecting groove 121, and the outer side of the self-locking elastic snap-fit ​​is provided with a snap-fit ​​521 so that the self-locking elastic snap-fit ​​is fixed in the fixing groove 12.

[0169] Example 8 Based on Example 4, Example 8 also has the following implementation method: like Figure 3 , Figure 5 , Figure 8 The heating device shown includes a housing 1 comprising a bottom shell 6 and a bottom cover 7 that enclose a mounting cavity 2. A guide opening 11 is disposed on the bottom cover 7. The bottom shell 6 has a bottom shell connecting portion 60. The bottom cover 7 has a bottom cover mating portion 70 that is fixedly fitted to the bottom shell connecting portion 60, and a first guide post 71 extending along a first direction or a second direction. The first guide portion 711 has a first connecting post 3111. The first guide post 71 has a limiting groove 73. The first connecting post 3111 extends into the limiting groove 73, and a first elastic member 51 is sleeved on its outer side. An anti-slip pad 66 is provided at the bottom of the bottom shell 6.

[0170] Example 9 Example 9, based on Example 8, also has the following implementation method: like Figure 2 , Figure 3 , Figure 5 The heating device shown has at least a portion of the heat dissipation holes 321 located on the lower side of the supporting housing 32. A first gap 81 is provided between the bottom cover 7 and the bottom of the supporting housing 32. The heat-conducting part 42 is sleeved on the upper surface of the supporting housing 32. The receiving groove 322 is provided with reinforcing ribs 324 for lifting the heat insulation member 43. The heat insulation member 43 is located in the receiving groove 322. A second gap 82 is provided between the heat dissipation holes 321 and the heat insulation member 43.

[0171] Unlike Embodiment 1, when the heating device is in its retracted state, the bottom of the heat-conducting part is nearly flush with the upper side of the bottom cover. The heat-conducting part can cover the first gap from the outside.

[0172] Example 10 Example 10, based on Example 8, also has the following implementation method: like Figure 3 , Figure 7 , Figure 9 The heating device shown has a second engaging portion 74 on one of the bottom cover 7 and the first guide portion 311, and a second guide portion 313 on the other of the bottom cover 7 and the first guide portion 311. The second engaging portion 74 cooperates with the second guide portion 313 so that the first guide portion 311 can slide relative to the bottom cover 7.

[0173] The second guide part 313 is a linear guide rail, and the second engaging part 74 is a slider that cooperates with the second guide part 313.

[0174] Example 11 Example 11, based on the above examples, also has the following implementation method: like Figure 5 , Figure 6 , Figure 7 The heating device shown includes a housing 1 comprising a light guide plate 9 disposed between a bottom shell 6 and a bottom cover 7. The light guide plate 9 has a light guide plate opening 94 through which a guide member 31 or the bottom cover 7 passes, a support portion 91 disposed along the outer periphery of the light guide plate opening 94, a positioning groove 92 located in the support portion 91, and a light strip 93 located in the positioning groove 92. Multiple positioning grooves 92 are provided, and each end of the positioning groove 92 has a guide surface 921. The guide surface 921 is an arc surface. The light guide plate 9 is made of acrylic material.

[0175] The light guide plate 9 is provided with a light guide plate connecting post 95 into which the bottom cover mating part 70 extends. The light guide plate connecting hole 90 passes through the light guide plate connecting post 95. The fastener 65, such as a screw, passes through the bottom cover connecting part 60 and the light guide plate connecting hole 90 from the bottom side, and then connects to the bottom cover mating part 70.

[0176] Example 12 Example 12, based on the above examples, also has the following implementation method: like Figure 2 , Figure 8 , Figure 9 The heating device shown includes a bottom shell 6 with a control component 63, a battery assembly 64 electrically connected to the control component 63, a first bottom shell receiving groove 61, and a second bottom shell receiving groove 62. A bottom cover 7 has an extension 75 extending towards the bottom shell 6. A first guide post 71 is disposed within the extension 75. The first bottom shell receiving groove 61 is used to limit the control component 63 or the battery assembly 64, and the second bottom shell receiving groove 62 is used to limit the extension 75. The battery assembly is a lithium iron phosphate battery. The first guide post 311 has an elastic buckle 3112, and the bottom cover 7 has a bottom cover abutting part 76 that abuts against the elastic buckle 3112.

[0177] The first guide portion 311 is provided with an elastic buckle 3112, and the extension portion 75 is provided with an extension opening 751 for the elastic buckle 3112 to extend out. The bottom cover 7 is provided with a bottom cover abutting portion 76 that abuts against the elastic buckle 3112. The conductive wire can pass through the extension opening 751 into the mounting cavity 2. The bottom cover 7 is provided with a bottom cover engaging portion 77 for the engaging control assembly 63 or the battery assembly 64.

[0178] Example 13 Example 13, based on the above examples, also has the following implementation method: A method for controlling a heating device, comprising the heating device and control component 63 as described above, includes the following steps: S1. Start the heating device, set the target temperature value and heating and heat preservation time, and control component 63 obtains the preset target temperature value; S2. The temperature signal of the heat-conducting component 4 is collected in real time by the control component 63; S3. Compare the temperature signal with the target temperature value, and output a control signal based on the comparison result; S4. The elastic component 5 drives the guide 31 to move the support housing 32 along the first direction so that the heat conduction component 4 is close to the body to be heated, and the temperature of the heat conduction component 4 is stabilized near the target temperature value for heat preservation, and the heating device is in the unfolded state. S5. After the heating and heat preservation time is over, the heating device automatically shuts off. Under the action of external force, the support shell 32 moves along the second direction so that the heat conduction component 4 moves away from the body to be heated. The elastic component 5 locks with the guide 31, and the heating device is in the storage state.

[0179] Example 14 Example fourteen, based on the above examples, also has the following implementation method: An application of a heating device, comprising the heating device described above, for heating and maintaining the temperature of the bottom of a ceramic disc. The ceramic disc has a ceramic disc cavity and a ceramic disc opening into which the heating device extends.

[0180] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A heating device, comprising a housing (1), wherein the housing (1) is provided with a mounting cavity (2), characterized in that: The housing (1) is provided with a support assembly (3), a guide opening (11) communicating with the mounting cavity (2), a heat-conducting assembly (4) connected to the support assembly (3), and an elastic assembly (5). The support assembly (3) includes a guide member (31) connected to the elastic assembly (5) and passing through the guide opening (11), and a support housing (32) connected to the guide member (31). The heat-conducting assembly (4) is at least partially protruding on the outside of the support housing (32). The elastic assembly (5) is used to drive the guide member (31) to move the support housing (32) along a first direction or a second direction, so that the heat-conducting assembly (4) moves closer to or away from the object to be heated. When the heating device is in the storage state, the end face of the support assembly (3) or the heat-conducting assembly (4) is close to and fits against the end face of the housing (1).

2. The heating device according to claim 1, characterized in that: The heat-conducting component (4) includes a heating element (41) and a heat-conducting part (42) close to the heating element (41) and connected to the support housing (32). The support housing (32) is provided with heat dissipation holes (321). The guide (31) is disposed on the central axis and / or the periphery of the central axis of the support housing (32). The heat-conducting component (4) has at least a first height relative to the horizontal plane when the heating device is in a retracted state and a second height when the heating device is in a fully extended state.

3. The heating device according to claim 2, characterized in that: The supporting housing (32) is provided with a receiving groove (322), the heat-conducting component (4) includes a heat insulation component (43) located between the heating element (41) and the supporting housing (32), the heat dissipation hole (321) is provided in the receiving groove (322), the receiving groove (322) is provided with a wire passage (323), and the wire passage (323) is connected to the guide (31) or the outside.

4. A heating device according to claim 3, characterized in that: The guide member (31) includes a first guide portion (311) extending along the central axis of the support housing (32), the elastic component (5) includes a first elastic element (51) connected to the first guide portion (311) and the housing (1), and the heat dissipation holes (321) are provided in a plurality of manner and disposed on the periphery of the receiving groove (322), and the heat dissipation holes (321) are located on the outer periphery of the projection of the first guide portion (311).

5. A heating device according to claim 1, characterized in that: The guide (31) includes a first buckle (312) extending along the central axis of the support housing (32), and the elastic component (5) includes a second elastic element (52) connected to the first buckle (312) and the housing (1). The housing (1) is provided with a fixing groove (12) for limiting the second elastic element (52). The second elastic element (52) is a self-locking elastic buckle.

6. A heating device according to claim 4, characterized in that: The housing (1) includes a bottom shell (6) and a bottom cover (7) that enclose and form an installation cavity (2). The guide opening (11) is provided on the bottom cover (7). The bottom shell (6) is provided with a bottom shell connecting part (60). The bottom cover (7) is provided with a bottom cover mating part (70) that is fixed to the bottom shell connecting part (60) and a first guide post (71) extending along a first direction or a second direction. The first guide part (311) is provided with a first connecting post (3111). One of the first guide post (71) or the first connecting post (3111) is provided with a limiting groove (73). The other of the first guide post (71) or the first connecting post (3111) extends into the limiting groove (73) and a first elastic member (51) is sleeved on its outer side.

7. A heating device according to claim 6, characterized in that: At least a portion of the heat dissipation holes (321) are located on the lower side of the support housing (32). A first gap (81) is provided between the bottom cover (7) and the bottom of the support housing (32). The heat-conducting part (42) is at least partially sleeved on the upper surface of the support housing (32). The receiving groove (322) is provided with reinforcing ribs (324) to lift the heat insulation member (43) or the heat-generating member (41). The heat insulation member (43) or the heat-generating member (41) is located in the receiving groove (322) or on the upper side of the receiving groove (322). A second gap (82) is provided between the heat dissipation holes (321) and the heat insulation member (43) or between the heat dissipation holes (321) and the heat-generating member (41).

8. A heating device according to claim 6, characterized in that: One of the bottom cover (7) and the first guide portion (311) is provided with a second engaging portion (74), and the other of the bottom cover (7) and the first guide portion (311) is provided with a second guide portion (313). The second engaging portion (74) cooperates with the second guide portion (313) so that the first guide portion (311) can slide relative to the bottom cover (7).

9. A method for controlling a heating device, characterized in that: The heating device and control assembly (63) according to any one of claims 1-8 comprises the following steps: S1. Start the heating device and obtain the preset target temperature value; S2. The temperature signal of the heat-conducting component (4) is collected in real time by the control component (63); S3. Compare the temperature signal with the target temperature value, and output a control signal based on the comparison result; S4. The elastic component (5) drives the guide (31) to move the support housing (32) along the first direction so that the heat conduction component (4) gets close to the body to be heated, and the temperature of the heat conduction component (4) is kept stable near the target temperature value for heat preservation, and the heating device is in the unfolded state. S5. After use, the heating device is turned off, the support housing (32) moves in the second direction so that the heat conduction component (4) moves away from the body to be heated, the elastic component (5) locks with the guide (31), and the heating device is in the storage state.

10. An application of a heating device, characterized in that: The heating device includes any one of claims 1-8, which is used to heat and keep the bottom of tableware warm.

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