Heating dinner plate and using method thereof

Abstract

The embodiment of the invention provides a heating dinner plate and a using method thereof, and relates to the technical field of dinner plates. The heating dinner plate comprises a bearing base body, supporting legs and a first heating wire. The number of the supporting feet is multiple, the multiple supporting feet are arranged on the lower surface of the bearing base body, the bearing base body is made of soft insulating materials, and the first heating wires are arranged on the lower surface of the bearing base body in a snake shape. According to the invention, the rapid cooling phenomenon caused by exposure of food to the environment can be effectively slowed down, so that the food is kept at a proper temperature in a waiting or eating process.

Description

Technical Field

[0001] This invention relates to the field of plate technology, specifically to a heated plate and its usage method. Background Technology

[0002] With the development of food delivery, buffet service, and the fast food industry, food trays have become widely used. Existing trays are typically made of plastic, metal, or composite materials, and their main function is to support food, facilitate retrieval, and allow for compartmentalized placement. However, traditional trays are mostly used as passive load-bearing components, only fulfilling basic holding functions and lacking temperature regulation capabilities. Therefore, their insulation performance is relatively limited in different scenarios.

[0003] However, in practical use, food placed on trays cools down rapidly due to low ambient temperature, prolonged exposure time, or heat loss from indoor ventilation, affecting taste and eating experience. Currently, the market lacks structural designs capable of actively heating or continuously keeping trays warm; existing solutions mostly rely on additional insulated boxes or bottom heating devices, failing to achieve portable heating functionality for the tray itself. Therefore, developing a device capable of heating trays and maintaining food temperature has both practical need and application value. Summary of the Invention

[0004] According to embodiments of the present invention, a heated plate and a method for using the same are provided. This addresses the problems raised in the background section.

[0005] In a first aspect of the invention, a heated plate is provided.

[0006] The heated plate includes: a support base, a first heating wire, and a fixing member; the fixing member is disposed on the lower surface of the support base, the cross-section of the fixing member in the vertical direction is trapezoidal, and the outline dimension of the trapezoidal cross-section gradually increases in the direction away from the lower surface of the support base; the fixing member has a groove that matches the first heating wire, the groove and the first heating wire are fitted without gap, and the first heating wire is bonded and fixed to the fixing member by insulating adhesive.

[0007] Preferably, a heated plate further includes a control component, which includes a housing, a controller, and a control panel; the controller is disposed inside the housing, the support base is connected to the housing, the lower surface of the housing is flush with the lower end of the support leg, the control panel is electrically connected to the controller, and the controller is connected to the first heating wire.

[0008] Preferably, the supporting substrate is provided with an identification area.

[0009] Preferably, the supporting substrate is a soft insulating material.

[0010] Preferably, the first heating wire is arranged in a serpentine pattern on the lower surface of the support substrate.

[0011] Preferably, it also includes a plurality of support legs, which are evenly arranged on the lower surface of the support base and are staggered with the first heating wire.

[0012] Preferably, the cross-section of the fixing member is U-shaped, the first heating wire is disposed inside the fixing member, and the inner wall of the fixing member is provided with two limiting protrusions, forming a limiting space between the two limiting protrusions to limit the first heating wire, and the limiting protrusions are in close contact with the surface of the first heating wire.

[0013] Preferably, the upper surface of the support base is provided with a cup placement assembly, the cup placement assembly includes a support plate and a second heating wire, the second heating wire is arranged in a spiral structure on the lower surface of the support plate, and contact plugs are provided at both ends of the second heating wire for connecting with the first heating wire.

[0014] Preferably, the support base has a groove for accommodating the support plate, the support plate is slidably installed in the groove, and the support plate can slide up and down relative to the groove; The cup placement assembly also includes three limiting components, a retaining ball, and a retaining element; the retaining ball is disposed on the lower surface of the support plate, and the retaining element is fixedly installed in the groove; The support base has an installation cavity. The limiting component includes a limiting plate, a transmission rod, and a driving component. The driving component is disposed on the lower surface of the support plate and has a sliding groove. The transmission rod is L-shaped, with one end slidably connected to the sliding groove and the other end fixedly connected to the limiting plate. The bent part of the transmission rod is rotatably connected to the installation cavity. A magnet is disposed in the installation cavity, and the limiting plate can be attracted by the magnet.

[0015] In a second aspect of the present invention, a method for using a heated plate is provided, which further includes the following steps: S1. Unfold the heated plate so that the supporting base is in a naturally flat state; S2. Place the tray containing the food on the upper surface of the support base; S3. By touching the start switch on the control panel of the control component, the controller drives the first heating wire to be energized, so that the first heating wire forms a serpentine heating area on the lower surface of the support substrate, thereby heating the support substrate; S4. The heating temperature is set through the temperature regulation module, so that the controller adjusts the output power of the first heating wire according to the set temperature, and the heating duration is set through the timer module to realize temperature control and duration management of the heating process.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages: This invention provides a heated plate. When the heated plate is unfolded, the supporting base automatically flattens due to its own flexibility, and multiple legs contact the tabletop to form stable support, keeping the supporting base relatively fixed and preventing warping. A tray containing food is then placed on the supporting base. Because the supporting base is made of a soft insulating material, the tray's own weight causes its bottom surface to fit more tightly against the supporting base, increasing the contact area while reducing the impact of air gaps on heat transfer. This close fit allows the heat generated by the first heating wire during operation to be transferred more efficiently to the supporting base, which then conducts the heat upwards to the bottom of the tray.

[0017] When the first heating wire heats along a serpentine path, its continuous and dense wiring structure forms a relatively uniform planar heat source, avoiding localized overheating or insufficient temperature. After the heating wire heats up, the heat first acts on the lower surface of the support substrate and then transfers upwards along the thickness of the substrate. Because the support substrate is relatively thin and flexible, the heat conduction path is short and the contact is close, thus raising the temperature of the bottom of the tray in a short time. The heated tray then transfers heat to the food inside, achieving continuous heat preservation and temperature replenishment for the food. Through the above conduction process, the rapid cooling of food due to exposure to the environment can be effectively slowed down, keeping the food at a suitable temperature while waiting for or eating.

[0018] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0019] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 A three-dimensional structural schematic diagram of a heated plate according to Embodiment 1 of the present invention is shown; Figure 2 A bottom view of the structure of a heated plate according to Embodiment 1 of the present invention is shown; Figure 3 An exploded structural diagram of a heated plate according to Embodiment 1 of the present invention is shown; Figure 4 A partial cross-sectional view of a heated plate according to Embodiment 1 of the present invention is shown. Figure 5 A partial cross-sectional view of a heated plate according to Embodiment 2 of the present invention is shown; Figure 6 A three-dimensional structural schematic diagram of the fixing member of the heated plate according to Embodiment 2 of the present invention is shown; Figure 7 A three-dimensional structural schematic diagram of a heated plate according to Embodiment 3 of the present invention is shown; Figure 8 An exploded structural diagram of a heated plate according to Embodiment 3 of the present invention is shown; Figure 9 A partial cross-sectional view of a heated plate according to Embodiment 3 of the present invention is shown; Figure 10 A cross-sectional view of the mounting cavity of the heated plate according to Embodiment 3 of the present invention is shown; Figure 11 A schematic diagram of the connection structure between the support plate and the limiting component of the heated plate according to Embodiment 3 of the present invention is shown; Figure 12 A three-dimensional structural schematic diagram of the support plate of the heated plate according to Embodiment 3 of the present invention is shown.

[0020] Explanation of reference numerals in the attached figures 1-Bearing base, 11-Identification area, 12-Groove, 13-Mounting cavity, 14-Magnet, 2-Support foot, 3-First heating wire, 4-Control component, 41-Housing shell, 42-Controller, 43-Control panel, 5-Cup placement component, 51-Bearing plate, 52-Second heating wire, 521-Plug, 53-Limiting component, 531-Limiting plate, 532-Transmission rod, 533-Driver, 5331-Slide groove, 54-Clocking ball, 55-Clocking piece, 6-Fixing piece, 61-Limiting protrusion. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0023] Example 1 like Figures 1 to 4 As shown, the heated plate includes a support base 1, legs 2, and a first heating wire 3. Multiple legs 2 are evenly distributed on the lower surface of the support base 1, forming stable support points after unfolding, ensuring the support base 1 remains flat and evenly stressed when placed on a table or other flat surface. The support base 1 is made of a soft insulating material; its flexibility allows the heated plate to be easily folded and stored when not in use, and when in use, it unfolds naturally and fits snugly against the bottom of the tray, achieving a better heat contact interface. The first heating wire 3 is arranged in a serpentine pattern on the lower surface of the support base 1. This serpentine, zigzagging arrangement allows the heating wire to have a larger laying length within a limited area, thereby expanding the overall heating coverage area and improving the uniformity of heat output per unit area.

[0024] In actual use, after the heated plate is unfolded, the supporting base 1 automatically flattens due to its own flexibility, and multiple legs 2 contact the tabletop to form a stable support, keeping the supporting base 1 relatively fixed and preventing warping. Then, the tray containing food is placed on the supporting base 1. Because the supporting base 1 is made of soft insulating material, the weight of the tray causes its bottom surface to fit more tightly against the supporting base 1, increasing the contact area while reducing the impact of air gaps on heat transfer. This close fit allows the heat generated by the first heating wire 3 during operation to be transferred more efficiently to the supporting base 1, which then conducts the heat upwards to the bottom of the tray.

[0025] When the first heating wire 3 heats along a serpentine path, its continuous and dense wiring structure forms a relatively uniform planar heat source, avoiding localized overheating or insufficient temperature. After the first heating wire 3 heats up, the heat first acts on the lower surface of the supporting substrate 1 and is transferred upwards along the thickness direction of the supporting substrate 1. Because the supporting substrate 1 is relatively thin and flexible, the heat conduction path is short and the contact is close, thus the temperature of the bottom of the tray can be raised in a short time. After the tray is heated, the heat is then transferred to the food inside, achieving continuous heat preservation and temperature replenishment for the food. Through the above conduction, the rapid cooling phenomenon of food due to exposure to the environment can be effectively slowed down, keeping the food at a suitable temperature during waiting or consumption.

[0026] In this embodiment, a heated plate also includes a control component 4, which consists of a housing 41, a controller 42, and a control panel 43. The controller 42 is installed inside the housing 41, which is connected to the supporting base 1, forming an integral structure with the heated plate. This facilitates unified operation and electrical management during use. The lower surface of the housing 41 is flush with the lower end of the support leg 2, preventing the control component 4 from causing unstable height differences on the overall bottom surface and ensuring that the heated plate is evenly stressed and not easily tilted when placed on a table. The control panel 43 is electrically connected to the controller 42, which is connected to the first heating wire 3, and controls the power supply and temperature of the heating wire through internal circuitry.

[0027] The control panel 43 is equipped with a start switch, a temperature adjustment module, and a timer module. Each module can control the heating start, temperature setting, and heating duration, respectively. When the user touches the start switch, the controller 42 receives the start command and drives the first heating wire 3 to energize and heat the substrate 1. The temperature adjustment module allows the user to adjust the heating temperature according to the actual needs of the food. The controller 42 can control the power of the first heating wire 3 according to the set temperature, keeping the heating process within the preset temperature range to avoid overheating or underheating. The timer module can control the working time of the first heating wire 3. When the set time is reached, the controller 42 automatically disconnects the heating circuit, achieving precise management of the heating period, ensuring heat preservation, preventing energy waste caused by prolonged heating, and improving safety and energy efficiency.

[0028] In this embodiment, a labeling area 11 is provided on the support substrate 1 to display necessary safety warnings to the user. The information marked in the labeling area 11 includes warning labels such as "Caution," "High Temperature Surface," "Do Not Rinse," and "Do Not Touch." These labels remind users to avoid direct contact with the high-temperature area during heating or immediately after heating to prevent burns from accidental contact with the heated surface. Simultaneously, the "Do Not Rinse" warning prevents the support substrate 1 from being rapidly cooled by water at high temperatures, which could cause material fatigue or moisture damage to the electrical components, ensuring the safety and stability of the product during long-term use. As a fixed warning area, the labeling area ensures that safety information remains clearly visible throughout the use and maintenance of the heated plate, effectively reducing the risk of misoperation.

[0029] In this embodiment, a heated plate also includes a fixing member 6. A receiving groove for accommodating the fixing member 6 is formed on the lower surface of the supporting base 1. The receiving groove and the supporting base 1 are an integral structure. The fixing member 6 is disposed within the receiving groove. The cross-section of the fixing member 6 in the vertical direction is trapezoidal, and the outline dimension of the trapezoidal cross-section gradually increases in the direction away from the lower surface of the supporting base 1. The trapezoidal structure can form a relatively stable fitting shape inside the receiving groove, so that the fixing member 6 can remain stable and not easily loosen or fall off when subjected to minor stresses generated by the thermal expansion and contraction of the heating wire. A groove matching the first heating wire 3 is provided on the fixing member 6. The groove fits the first heating wire 3 without gap, and the first heating wire 3 is bonded and fixed to the fixing member 6 with insulating adhesive. After the first heating wire 3 is installed in the groove, it is bonded to the fixing member 6 with insulating glue. The insulating glue not only serves to hold the wire in place, but also forms an electrical isolation layer during the heating process, preventing the conductive part of the heating wire from contacting other structures and improving the overall electrical safety. The first heating wire 3 is installed on the fixing member 6. Through the positioning function of the fixing member 6, the first heating wire 3 maintains a stable arrangement during the heating process and will not shift its position due to temperature changes, external pressure, or material deformation, thereby ensuring the uniformity and reliability of the heating results.

[0030] Example 2 like Figure 5 and Figure 6 As shown, since heated plates often need to be carried, moved, or even rolled up for storage during actual use, the stability of the first heating wire 3 on the supporting substrate is particularly critical. If the heating wire shifts position during repeated bending, unfolding, or rolling, it will not only affect the uniformity of heating but may also cause damage due to uneven stress on the circuit. Based on this, the main difference between this embodiment and Embodiment 1 is that the structure of the fixing member 6 has been improved, giving it stronger limiting and covering capabilities to further enhance the fixing effect of the first heating wire 3 in dynamic usage environments.

[0031] In this embodiment, the cross-section of the fixing member 6 is U-shaped, and the first heating wire 3 is disposed in the internal space of the U-shaped fixing member 6. The U-shaped structure forms a three-sided covered groove shape, which, compared with the trapezoidal cross-section in Embodiment 1, can achieve a deeper and more stable embedding effect for the heating wire, making it difficult for the heating wire to fall out of its routing path when subjected to bending force or external disturbance. To further improve the fixing reliability, two limiting protrusions 61 are provided on the inner wall of the fixing member 6. The two limiting protrusions 61 are arranged correspondingly to each other, forming a limiting space between them for limiting the first heating wire 3. After the first heating wire 3 is installed, its outer surface is in close contact with the limiting protrusions 61, achieving a double-sided clamping effect for the heating wire.

[0032] The shape design of the limiting protrusion 61 creates a locally narrowed limiting area within the U-shaped cavity, subjecting the first heating wire 3 to clamping forces from both sides after insertion. This clamping force not only prevents the heating wire from sliding longitudinally but also limits its lateral displacement, further enhancing its stability during curling, folding, and slight compression. Because the limiting protrusion 61 is tightly fitted to the surface of the heating wire, it maintains the wire's fixation while preventing damage to the outer insulation layer due to excessive pressure, thus improving both the fixing effect and the lifespan of the heating wire. Furthermore, the dual limiting method of the U-shaped structure and the limiting protrusion significantly reduces the risk of displacement due to material flexibility, ensuring the heating wire remains in a consistent position during actual use, which helps guarantee the preset layout of the heating area and the overall heating effect.

[0033] Example 3 like Figures 7 to 12 As shown, in this embodiment, a cup placement assembly 5 for placing a cup is provided on the upper surface of the support base 1. The cup placement assembly 5 includes a support plate 51 and a second heating wire 52. The second heating wire 52 is arranged in a spiral pattern on the lower surface of the support plate 51, and contact plugs 521 are provided at both ends of the second heating wire 521 for electrical connection with the first heating wire 3. The spiral arrangement enables the second heating wire 52 to form a planar heating structure within a limited area. When the support plate 51 is used to support the cup, it can achieve circumferential uniform heating of the bottom of the cup. It is suitable for various serving methods such as hot beverage cups and bowl-shaped containers with a base, and has good heat conduction efficiency in maintaining the temperature of the beverage.

[0034] The support base 1 has a groove 12 for accommodating the support plate 51. The support plate 51 is slidably installed in the groove 12 and can move vertically relative to the groove 12. When the user unfolds the support base 1 and presses down on the support plate 51 to place the cup, the support plate 51 moves downward. Simultaneously, the downward movement of the support plate 51 causes the second heating wire 52 to move downward as a whole, allowing the contact plugs 521 at both ends of the heating wire to pass through the support base 1 and connect with the first heating wire 3. This mechanical contact structure ensures that the second heating wire 52 automatically energizes when the support plate 51 is pressed down, thereby heating the support plate 51. Once the support plate 51 is heated, the cup placed on it can be continuously heated, keeping the hot beverage at a suitable temperature and effectively extending the beverage's heat retention time in low-temperature environments.

[0035] To ensure the support plate 51 maintains a stable position after downward movement, the cup placement assembly 5 further includes three limiting components 53, a retaining ball 54, and a retaining element 55. The retaining ball 54 is located on the lower surface of the support plate 51, and the retaining element 55 is fixedly installed inside the groove 12. The retaining element 55 is composed of multiple elastic pieces arranged in a circular array, forming a limiting space for the retaining ball 54 between the multiple elastic pieces. When the support plate 51 moves downward, the retaining ball 54 moves downward synchronously with the support plate 51 until the retaining ball 54 is pressed into the limiting space formed between the multiple elastic pieces. The elastic pieces exert a circumferential clamping force on the retaining ball 54, reliably limiting the position of the support plate 51. At this time, the upper surface of the support plate 51 is lower than the upper surface of the support base 1, forming a downwardly recessed area on the support base 1. This recessed area enhances the lateral stability of the cup, allowing the cup to be embedded within it, thereby reducing the risk of the cup slipping due to table vibration or accidental contact.

[0036] Additionally, a mounting cavity 13 is provided on the support base 1 for accommodating the limiting component 53. The limiting component 53 includes a limiting plate 531, a transmission rod 532, and a driving member 533. The driving member 533 is mounted on the lower surface of the support plate 51 and has a sliding groove 5331 for sliding engagement with the transmission rod 532. The transmission rod 532 has an L-shaped structure, with one end slidably connected to the sliding groove 5331 and the other end fixedly connected to the limiting plate 531. The bent portion of the transmission rod 532 is rotatably connected to the mounting cavity 13, allowing it to rotate during the downward pressing action of the support plate. A magnet 14 is provided inside the mounting cavity 13, which can generate an attractive force on the limiting plate 531, ensuring that the limiting plate 531 remains stably flipped after reaching a predetermined angle.

[0037] As the support plate 51 moves downward, the drive component 533 descends synchronously with it. The drive component 533 slides relative to the transmission rod 532, causing the transmission rod 532 to move within the groove 5331 and rotate around its rotatable connection. With the rotation of the transmission rod 532, the limiting plate 531 is flipped and gradually opens. When all three limiting plates 531 in the three limiting components 53 have completed flipping, they collectively form a limiting space facing the cup, large enough to prevent the cup from tipping over. The attraction of the magnet 14 to the limiting plate 531 ensures it remains stable after flipping, preventing it from falling back due to vibration or slight rebound of the support plate, thus maintaining the reliability of the limiting structure. This limiting structure provides three-point circumferential limiting support to the cup after it is placed in the recessed area, further enhancing safety in preventing tipping.

[0038] The heating wire contacts are connected by pressing down on the support plate 51. The support plate 51 is locked by the ball 54 and the locking piece 55. The cup body is protected by the limiting component 53 and the magnetic rotating mechanism. This makes the cup body placement component 5 in this embodiment have a dynamic response structure linkage mode in actual use.

[0039] Example 4 A method for using a heated plate includes the following steps: S1. Unfold the heated plate so that the support base 1 is in a naturally flat state, and make the multiple legs 2 contact the table or other flat surface to form a stable support, so that the support base 1 remains flat.

[0040] S2. Place the food tray on the upper surface of the support base 1. Utilize the flexibility of the support base 1 to make the bottom of the tray fit against the support base 1, thereby increasing the heat contact area and reducing the impact of air gaps on heat transfer.

[0041] S3. By touching the start switch on the control panel 43 on the control component 4, the controller 42 drives the first heating wire 3 to be energized, so that the first heating wire 3 forms a serpentine heating area on the lower surface of the support substrate 1, thereby heating the support substrate 1.

[0042] S4. Based on the temperature requirements of the food, the heating temperature is set through the temperature adjustment module, so that the controller 42 adjusts the output power of the first heating wire 3 according to the set temperature, and sets the heating duration through the timer module to realize temperature control and duration management of the heating process.

[0043] S5. When the first heating wire 3 is working, its heat is transferred to the supporting substrate 1 and further to the bottom of the tray, so that the food in the tray can maintain its temperature during consumption or waiting, thus achieving the effect of heat preservation or heating.

[0044] This method unfolds the heated tray and utilizes multiple legs 2 to form a stable support, allowing the supporting base 1 to quickly return to a flat state before use, avoiding uneven heating or tray tilting caused by an unstable bottom surface. The supporting base 1 is made of flexible material, allowing the tray to automatically conform to its upper surface after placement, increasing the contact area between the bottom of the tray and the supporting base 1, thereby improving heat transfer efficiency and reducing heat loss due to air insulation. The first heating wire 3 is arranged in a serpentine pattern on the lower surface of the supporting base 1, providing a continuous and uniform planar heat source after being powered on, making the temperature of the bottom of the tray rise faster and more evenly, avoiding local overheating or insufficient temperature. The control component 4 realizes start-up, temperature setting, and timer control, making the heating process more intelligent and controllable. The appropriate heat preservation temperature and heating time can be selected according to the actual needs of different foods, improving energy utilization efficiency and avoiding safety hazards caused by prolonged heating. The overall operation steps are clear and simple, and users can obtain stable heating and heat preservation effects without complicated operations, effectively delaying the problem of food cooling down due to exposure to ambient temperature, and significantly improving the dining experience.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A heated tray characterized by, The utility model relates to a heating device for cup body, including: Bearing base (1), first heating wire (3) and fixed part (6), the fixed part (6) is set up in the lower surface of bearing base (1), the cross section of fixed part (6) is trapezoidal along vertical direction, and the profile size of this trapezoidal cross section gradually increases along the direction away from the lower surface of bearing base (1), recess is set up on fixed part (6) and matches with first heating wire (3), recess and first heating wire (3) no gap fit, first heating wire (3) is bonded and fixed with fixed part (6) through insulating glue.

2. The heated tray of claim 1, wherein, Still including control assembly (4), control assembly (4) includes shell (41), controller (42) and control panel (43), the controller (42) is set up in shell (41), bearing base (1) is connected with shell (41), control panel (43) is electrically connected with controller (42), controller (42) is connected with first heating wire (3).

3. The heated tray of claim 1, wherein, Bearing base (1) is provided with identification area (11) on.

4. The heated tray of claim 1, wherein, Bearing base (1) is soft insulating material.

5. The heated tray of claim 1, wherein, First heating wire (3) is serpentine arrangement in the lower surface of bearing base (1).

6. The heated tray of claim 1, wherein, Still including support (2), the number of support (2) is multiple, and is evenly arranged in the lower surface of bearing base (1), and is staggered with first heating wire (3).

7. The heated tray of claim 1, wherein, The cross section of fixed part (6) is U-shaped, first heating wire (3) is arranged in fixed part (6), the inner wall of fixed part (6) is provided with two limit protrusions (61), and the limit space for limiting first heating wire (3) is formed between two limit protrusions (61), and the limit protrusion (61) is in close contact with the surface of first heating wire (3).

8. The heated tray of claim 1, wherein, The upper surface of bearing base (1) is provided with cup body placing assembly (5), cup body placing assembly (5) includes bearing plate (51) and second heating wire (52), second heating wire (52) is arranged in the lower surface of bearing plate (51) in the form of vortex line structure, and the both ends of second heating wire (52) are provided with contact plugs (521), and the contact plugs (521) are used to be connected with first heating wire (3).

9. The heated tray of claim 8, wherein, Bearing base (1) is provided with recess (12) for accommodating bearing plate (51), bearing plate (51) is slidably installed in recess (12), and bearing plate (51) can slide up and down relative to recess (12). Cup body placing assembly (5) further includes three limit assemblies (53), ball (54) and clamp (55), ball (54) is arranged on the lower surface of bearing plate (51), and clamp (55) is fixedly installed in recess (12). The bearing base (1) is provided with a mounting cavity (13), and the limiting assembly (53) comprises a limiting plate (531), a transmission rod (532) and a driving member (533). The driving member (533) is arranged on the lower surface of the bearing plate (51), and a sliding groove (5331) is arranged on the driving member (533). The transmission rod (532) is L-shaped, one end of the transmission rod (532) is slidably connected with the sliding groove (5331), the other end of the transmission rod (532) is fixedly connected with the limiting plate (531), the bending portion of the transmission rod (532) is rotatably connected with the mounting cavity (13), a magnet (14) is arranged in the mounting cavity (13), and the limiting plate (531) can be attracted by the magnet (14).

10. A method of using a heated tray, comprising: The heated tray comprises the heating tray according to any one of claims 1 to 9, and further comprises the following steps: S1. unfolding the heated tray, so that the bearing base (1) is in a natural flat state; S2. placing a tray containing food on the upper surface of the bearing base (1); S3. touching the start switch on the control panel (43) of the control assembly (4) to drive the controller (42) to drive the first heating wire (3) to be electrified, so that the first heating wire (3) forms a serpentine heating area on the lower surface of the bearing base (1), and the bearing base (1) is heated; S4. setting the heating temperature through the temperature adjusting module, so that the controller (42) adjusts the output power of the first heating wire (3) according to the set temperature, and setting the heating duration through the timing module, so as to realize the temperature control and time management of the heating process.

Images