Constant-temperature heating dinner plate

Abstract

The utility model discloses a constant-temperature heating dinner plate. The constant-temperature heating dinner plate comprises a heat conduction dinner plate and a heating bottom plate, the heat conduction dinner plate is provided with a sealing cavity used for containing a phase change material. The heat conduction dinner plate is arranged on the heating base plate, and the heating base plate can provide heat for the heat conduction dinner plate when the temperature of the heat conduction dinner plate is lower than the preset temperature. According to the scheme, heat is stored and released according to the characteristics of the phase change material in the sealed cavity, and food in the heat conduction dinner plate can be heated and subjected to heat preservation within a certain time; furthermore, when the temperature of the heat conduction dinner plate is lower than the preset temperature, the heating base plate intervenes to provide heat, the constant temperature duration of food in the dinner plate can be prolonged, the dining experience is improved, and dining health is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-insulating containers, in particular to a constant-temperature heating dinner plate. Background Art

[0002] At present, there are no commercial constant temperature tableware products on the market that can meet the needs of providing dishes for restaurant dining. The heating and insulation of dishes usually adopt the heating system equipped on the dining table or solid alcohol to heat and keep the food warm.

[0003] Alternatively, dinner plates powered directly by the table's power supply are limited in their use scenarios and cannot meet the restaurant's dining insulation requirements. Utility Model Content

[0004] In view of this, the present invention provides a constant temperature heating plate, which can increase the constant temperature time of food in the plate.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A constant temperature heating plate, comprising: a heat-conducting plate and a heating bottom plate;

[0007] The heat-conducting dinner plate is provided with a sealed cavity for placing the phase change material;

[0008] The heat-conducting dinner plate is arranged on the heating base, and the heating base can provide heat to the heat-conducting dinner plate when the temperature of the heat-conducting dinner plate is lower than a preset temperature;

[0009] The thermally conductive dinner plate includes: a ceramic body and a base, wherein the base is wrapped around the bottom of the ceramic body, the ceramic body and the base form a sealed cavity, and the phase change material is filled in the sealed cavity; alternatively, the thermally conductive dinner plate is made of metal, and the inner and outer walls of the thermally conductive dinner plate are plated with ceramic material.

[0010] In some embodiments provided by this solution, the heat-conducting dinner plate can be detachably disposed on the heating base plate.

[0011] In some embodiments provided by this solution, the heating chassis includes: a heating chassis shell and a heating temperature control system;

[0012] The heating chassis housing is made of a low thermal conductivity material.

[0013] In some embodiments provided by this solution, the heating chassis further comprises: a heat insulating ring;

[0014] The heat-insulating ring is located between the outer walls of the heat-conducting dinner plate and the heating base shell, and the heat-insulating ring is made of a low-thermal-conducting heat-insulating material.

[0015] In some embodiments provided by this solution, the heating and temperature control system includes: a power supply unit and a heating and temperature control unit; the power supply unit can provide electrical energy to the heating and temperature control unit;

[0016] The heating and temperature control unit includes: a heating film, a heat conducting plate and a circuit system;

[0017] The heating film can heat the heat conducting plate, the heat conducting plate is in contact with the bottom of the heat conducting dinner plate, and the circuit system is connected between the power supply unit and the heating film.

[0018] In some embodiments provided by this solution, the circuit system includes: a temperature sensor and a control system;

[0019] The temperature sensor is embedded in the thermal insulation ring;

[0020] The control system is capable of adjusting the heating rate and temperature based on feedback from the temperature sensor.

[0021] In some embodiments provided by this solution, the temperature sensors are respectively embedded in multiple side walls of the thermal insulation ring.

[0022] In some embodiments provided by this solution, the temperature sensor is a short-range infrared temperature sensor.

[0023] In some embodiments provided by this solution, the heating and temperature control system further comprises: a flexible heat conducting mechanism;

[0024] The flexible heat-conducting mechanism is arranged between the heat-conducting plate and the heat-conducting dining tray.

[0025] In some embodiments provided by this solution, the power supply unit includes: a battery pack, a sensor, and a battery management system;

[0026] The battery pack is used to supply power to the heating film, the sensor is used to collect data from the battery pack, and the battery management system can monitor the status of the battery pack according to the status data collected by the sensor.

[0027] It can be seen from the above technical solutions that the constant temperature heating plate provided by the present invention can increase the constant temperature time of food in the plate, improve the dining experience, and ensure healthy dining. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the appearance and structure of a constant temperature heating dinner plate provided by an embodiment of the present utility model;

[0030] Figure 2 A schematic structural diagram of a ceramic-metal composite integrated dinner plate provided in an embodiment of the present invention;

[0031] Figure 3 A schematic structural diagram of a metal body-plated ceramic dinner plate provided in an embodiment of the present invention;

[0032] Figure 4 A schematic cross-sectional view of a constant temperature heating plate provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of a nine-grid dinner plate provided in an embodiment of the present utility model;

[0034] Figure 6 This is a schematic structural diagram of a five-grid dining plate provided in an embodiment of the present invention.

[0035] Among them, 100 is a heat-conducting dinner plate, 111 is a ceramic body, 112 is a bottom bracket, 113 is a sealed cavity, 121 is the bottom of the outer wall, 122 is the inner wall of the dinner plate, and 123 is the outer wall.

[0036] 200 is a heating base, 210 is a heating base shell, 220 is a heat insulating ring, 230 is a flexible heat conducting mechanism, and 240 is a heat conducting plate. DETAILED DESCRIPTION

[0037] The constant temperature heating plate designed by this utility model adopts innovative material composite and unique structural design. It can be used on dining tables without power supply and keeps the food in the plate at a constant temperature for 1 to 2 hours, improving the dining experience and ensuring healthy dining.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] The present invention provides a constant temperature heating plate, comprising: a heat-conducting plate 100 and a heating base plate 200, the structure of which can refer to Figure 1As shown, the heat-conducting plate 100 is provided with a sealed cavity 113 for placing the phase change material. The heat-conducting plate 100 is disposed on a heating base 200. The heating base 200 can provide heat to the heat-conducting plate 100 when the temperature of the heat-conducting plate 100 is lower than a preset temperature. Specifically, the heating base 200 can obtain the temperature of the heat-conducting plate 100 through a sensor.

[0040] It can be seen from the above technical solution that the constant temperature heating plate provided by the embodiment of the present invention utilizes the characteristics of the phase change material in the sealed cavity 113 to store and release heat, and can heat and keep the food in the heat-conducting plate 100 warm for a certain period of time; further, when the temperature of the heat-conducting plate 100 is lower than the preset temperature, the heating base 200 intervenes to provide heat, which can increase the constant temperature time of the food in the plate, improve the dining experience, and ensure healthy dining.

[0041] In some embodiments of this solution, the heat-conducting plate 100 can be separated from the heating base plate 200. Figure 1 As shown, a groove can be specifically provided on the top of the heating base 200 to match the heat-conducting plate 100. This arrangement, on the one hand, facilitates the cleaning and disinfection of the heat-conducting plate 100; on the other hand, the heat-conducting plate 100 can absorb heat before use, such as when placed in a high-temperature sterilizer, and the phase change material can store heat during high-temperature sterilization, making it convenient to use and improving efficiency.

[0042] When using this solution's constant-temperature heating plate containing phase change material, the plate 100 is first sterilized in a sterilizer at temperatures exceeding 120°C, while simultaneously storing heat. Once the plate 100 is served, the phase change material dissipates heat through phase change to maintain a constant temperature for a period of time. When the phase change material's stored heat is insufficient to maintain a constant temperature, the heating base 200 activates the heating film. This combination of active and passive heating allows the plate to maintain a constant temperature for a longer period of time, saving energy in the power supply unit.

[0043] In some embodiments provided in this solution, the heat-conducting dinner plate 100 includes: a ceramic body 111 and a base 112, the structure of which can refer to Figure 2As shown; wherein, the material of the base 112 is determined by the composition of the phase change material, and can be metal, plastic, ceramic, etc.; the base 112 is wrapped around the bottom of the ceramic body 111, and a sealed cavity 113 is formed between the ceramic body 111 and the base 112. That is, the body of the thermally conductive dinner plate 100 can be made of ceramic material, and the bottom of the ceramic dinner plate is wrapped with a metal thermal conductive material to form a combination, and the sealed cavity 113 between them can be injected with a 60~80℃ phase change material. The ceramic body 111 and the base 112 are a composite integrated structure. Before use, the thermally conductive dinner plate 100 is placed in a high-temperature disinfection cabinet, and the phase change material can absorb heat and store heat. During use, the phase change material releases heat and transfers it to the dinner plate, so that the thermally conductive dinner plate 100 is kept at a constant temperature below 60℃ to prevent scalding safety, while ensuring that the dishes on the dinner plate are at 40~50℃.

[0044] In some embodiments provided by this solution, the heat-conducting dinner plate 100 is made of metal, and the inner wall 122 and the outer wall 123 of the heat-conducting dinner plate 100 are plated with ceramic material. Figure 3 As shown, the heat-conducting tray 100 can also be made of metal, with the outer wall bottom 121 left untreated, preserving the metal's high thermal conductivity. Except for the bottom of the tray, the bottom of the inner wall, the inner wall periphery, and the outer wall periphery 123 of the tray are plated with ceramic material.

[0045] In some embodiments provided in this solution, the heating chassis 200 includes: a heating chassis shell 210 and a heating temperature control system, the structure of which can refer to Figure 4 wherein the heating chassis housing 210 is made of a low thermal conductivity material, such as wood, plastic, etc., to provide insulation.

[0046] In some embodiments provided by this solution, the heating base 200 further includes: a heat insulating ring 220, the structure of which can refer to Figure 4 As shown, the heat insulating ring 220 is located between the outer wall of the heat conductive dining tray 100 and the heating base housing 210. The heat insulating ring 220 is made of a low thermal conductivity insulation material. The heat insulating ring 220 is made of a low thermal conductivity insulation material, such as low thermal conductivity rubber, low thermal conductivity plastic, low thermal conductivity rubber-plastic material, etc., and is located between the outer wall of the heat conductive dining tray 100 and the heating base housing 210, tightly wrapping the heat conductive dining tray 100 to reduce heat loss.

[0047] In some embodiments provided by this solution, the heating and temperature control system includes: a power supply unit and a heating and temperature control unit; the power supply unit can provide electrical energy to the heating and temperature control unit; the heating and temperature control unit includes: a heating film, a heat conducting plate 240 and a circuit system, and its structure can refer to Figure 4As shown, the heating film heats the heat-conducting plate 240, which contacts the bottom of the heat-conducting plate 100. The circuit system is connected between the power supply unit and the heating film. The heating film can be made of flexible PI or graphene material, and the input power to the heating film is controllable. The heating film heats the heat-conducting plate 240.

[0048] In some embodiments of this solution, the circuit system includes a temperature sensor and a control system. The temperature sensor is embedded in the thermal insulation ring 220. The control system adjusts the heating rate and temperature based on feedback from the temperature sensor. Based on the characteristics of the heating film, its stability and safety are ensured under varying input power levels. The temperature sensor feedback is combined with PID temperature control to maintain a constant heating rate and temperature. By embedding the temperature sensor in the thermal insulation ring 220, this solution does not affect the cleaning and disinfection of the thermally conductive dinner plate 100.

[0049] In some embodiments of this solution, temperature sensors are embedded in the multiple sidewalls of the heat insulating ring 220. Specifically, four temperature sensors can be embedded in the upper portion of the sidewalls of the heat insulating ring 220. These four sensors can monitor the temperature of the four sidewalls of the heat conductive dinner plate 100. When any temperature falls below a preset value, the heating film is activated to maintain a constant temperature of the dinner plate.

[0050] In some embodiments provided by this solution, the temperature sensor is a short-range infrared temperature sensor, so as to accurately obtain the temperature of the thermally conductive dinner plate 100.

[0051] In some embodiments provided by this solution, the heating and temperature control system further includes: a flexible heat conducting mechanism 230, the structure of which can refer to Figure 4 As shown, a flexible heat-conducting mechanism 230 is positioned between a heat-conducting plate 240 and a heat-conducting dinner plate 100. The heat-conducting plate transfers heat to the dinner plate, either without or with phase change material, via a flexible, highly thermally conductive material or a highly thermally conductive liquid package, maintaining a constant temperature. A layer of flexible, highly thermally conductive material or a highly thermally conductive liquid package is placed between the bottom of the dinner plate and the heat-conducting plate. If the bottom of the dinner plate is not a flat surface but rather has compartments, this increases the heat-conducting contact area of ​​the dinner plate and improves heat transfer efficiency.

[0052] In some embodiments provided by the present solution, the power supply unit includes: a battery pack, a sensor, and a battery management system; wherein the battery pack is used to power the heating film, the sensor is used to collect data from the battery pack, and the battery management system can monitor the status of the battery pack based on the status data collected by the sensor. Specifically, the battery pack is a low-internal-resistance, rechargeable, high-power battery, and the battery pack powers the heating film. The battery management system monitors the status of the battery, including voltage, current, and temperature, to ensure the safety and efficiency of the battery. The sensor is used to collect this data to assist the battery management system in making corresponding management decisions. If a structural design with its own battery is adopted, it can be used in any restaurant, and the dining table does not need to be equipped with a power supply.

[0053] In some embodiments provided by this solution, the heat-conducting dinner plate 100 is in a multi-grid form. According to the needs of the user, it can hold multiple dishes, such as nine-grid, five-grid, etc. Its structure can refer to Figure 5 and Figure 6 shown.

[0054] The present invention is further described below with reference to the following embodiments:

[0055] A constant temperature heating dinner plate is composed of a heat-conducting dinner plate 100 and a heating bottom plate 200, which are separate structures.

[0056] The heat-conducting dinner plate 100 is in a multi-grid form, and can hold multiple dishes according to the needs of the user, such as nine-grid, five-grid, etc. Figure 5 and Figure 6 As shown. Dinner plates can be made of materials including ceramic, metal, glass, plastic, and composite materials. The bottom of the plate has good thermal conductivity, while the sidewalls provide good insulation. The bottom of the plate can be formed using a composite process of different materials, into a cavity. Phase change material can be injected into the cavity to improve thermal efficiency through the energy storage properties of the phase change material.

[0057] The ceramic-metal composite integrated dinner plate is composed of a ceramic body 111 and a base 112. Figure 2 As shown, a sealed cavity 113 is formed between the metal base and the ceramic, into which a 60-80°C phase change material can be injected. When the plate is placed in a high-temperature sterilizer, the phase change material absorbs and stores heat. When the plate is used, the phase change material releases heat and transfers it to the plate.

[0058] Metal body plated ceramic dinner plate, such as Figure 3 As shown, the dinner plate body can also be made of metal, the outer wall bottom 121 is not processed in any way to retain the high thermal conductivity of the metal, and the inner wall 122 and the outer wall 123 of the dinner plate are plated with ceramic material.

[0059] The heating chassis consists of a shell, a heating temperature control system, and a heat insulation ring 220. Figure 4As shown. The insulation ring 220 is made of a low-thermal-conductivity insulation material and is located between the heat-conducting dinner plate 100 and the heating base housing 210. The housing 210 is made of a low-thermal-conductivity insulation material, such as wood or low-thermal-conductivity plastic. One side of the insulation ring 230 matches the shape of the outer wall of the dinner plate, making close contact with the outer wall of the heat-conducting dinner plate. The other side is vertically shaped and in close contact with the side wall of the heating base. The bottom end wraps around the heat-conducting plate 240 to form a sealed structure. A flexible, highly thermally conductive material or highly thermally conductive liquid package (the aforementioned flexible thermal conductive mechanism 230) is placed on the heat-conducting plate. If the bottom of the dinner plate is not completely flat, the flexible, highly thermally conductive material or highly thermally conductive liquid package can be flexed to the shape of the bottom of the dish. Under the action of the weight of the dinner plate, the bottom of the dinner plate is in close contact with the highly thermally conductive material, ensuring that most of the heat from the heat-conducting plate is transferred to the dinner plate, reducing heat loss.

[0060] The heating and temperature control system includes a power supply unit and a heating and temperature control unit.

[0061] The power supply unit primarily consists of a battery pack, sensors, and a battery management system. The battery pack is a low-resistance, high-power, rechargeable battery that powers the heating element. The battery management system monitors battery status, including voltage, current, and temperature, to ensure safety and efficiency. Sensors collect this data to assist the battery management system in making appropriate management decisions.

[0062] The heating and temperature control unit includes a heating film, a heat conducting plate, a flexible high thermal conductivity material or a high thermal conductivity liquid package, and a circuit system. The heating film can be a flexible PI or graphene material. The input power of the heating film can be controlled. The heating film heats the heat conducting plate, and the heat conducting plate transfers heat to the dinner plate without phase change material or containing phase change material through the flexible high thermal conductivity material or the high thermal conductivity liquid package to maintain a constant temperature of the dinner plate. A layer of flexible high thermal conductivity material or high thermal conductivity liquid package is set between the bottom of the dinner plate and the heat conducting plate. When the bottom of the dinner plate is not a complete plane but has grids, the heat conduction contact area of ​​the dinner plate can be increased, thereby improving the heat conduction efficiency. The circuit includes a temperature sensor and a control system. According to the characteristics of the heating film, it ensures its stability and safety under different input powers, and adjusts the heating rate and temperature to a constant level through temperature sensor feedback and PID temperature control.

[0063] This solution has the following features:

[0064] 1. When the phase change material dinner plate and the heating base are used in combination, the characteristics of the phase change material and the heating film can be used to achieve a combined active and passive heating method, which can increase the constant temperature time of the dinner plate and save electricity.

[0065] 2. High-temperature disinfection and heat absorption: The plates are first placed in a high-temperature disinfection cabinet set at above 120°C. During the disinfection process, the phase change material at the bottom of the plates changes from solid to liquid at high temperatures, absorbing and storing a large amount of heat. The phase change temperature of the phase change material can be set between 60 and 80°C, and the latent heat is greater than 200 kJ / kg.

[0066] 3. Phase change heat dissipation: When the plate is served, the phase change material begins to release heat through a phase change process. In this process, the material changes from liquid to solid, releasing previously stored heat, thereby maintaining the temperature of the plate.

[0067] 4. Infrared temperature sensor: Four temperature sensors are embedded in the upper part of the side wall of the insulation ring. The four sensors can monitor the temperature of the side walls around the plate respectively. The temperature sensor uses a short-range infrared temperature sensor, which is embedded in the insulation ring and does not affect the cleaning and disinfection of the plate.

[0068] 5. Heating film heating: The temperature sensor monitors the temperature of the side walls of the four plates. When any temperature value is lower than the preset temperature, the heating film is activated. The heating film is an active heating technology that converts electrical energy into thermal energy. The heating film heats the heat conducting plate, and the heat conducting plate transfers the heat to the phase change material at the bottom of the plate, continuously heating the plate to ensure a constant temperature.

[0069] 6. Save electricity: Since phase change materials can store and release a large amount of heat, the heat released by the phase change material can maintain the constant temperature of the plate within the first 30 to 40 minutes of the user's meal. When the heat stored in the phase change material is not enough to maintain the constant temperature of the plate, the heating film is activated. This combination of active and passive heating method can not only extend the constant temperature time of the plate to more than 2 hours, but also save electricity.

[0070] Compared with the prior art, the utility model has the following advantages:

[0071] 1. Utilizing the thermal conductivity of different materials and combining them with phase change materials, we design heat-conducting plates to improve heating efficiency and maintain a constant temperature.

[0072] 2. Using high-temperature sterilization of the plates allows the phase change material to absorb heat in advance, thus heating and preserving the plates when used;

[0073] 3. Design a heated tray that utilizes a housing, heating temperature control system, and insulation ring to maintain a constant temperature for multiple dishes on a dining table without power, preventing discomfort caused by cold food.

[0074] 4. The heat insulation ring is made of low thermal conductivity insulation material and is located between the outer wall of the plate and the heating base, tightly wrapping the plate to reduce heat loss.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A constant temperature heating plate, characterized in that: include: A heat-conducting dining tray (100) and a heating base tray (200); The heat-conducting dinner plate (100) is provided with a sealed cavity (113) for placing a phase change material; The heat-conducting dinner plate (100) is arranged on the heating base plate (200), and the heating base plate (200) is capable of providing heat to the heat-conducting dinner plate (100) when the temperature of the heat-conducting dinner plate (100) is lower than a preset temperature; The heat-conducting dinner plate (100) comprises: a ceramic body (111) and a base (112); the base (112) is wrapped around the bottom of the ceramic body (111); the ceramic body (111) and the base (112) form a sealed cavity (113); the sealed cavity (113) is filled with the phase change material; or, the heat-conducting dinner plate (100) is made of metal, and the inner wall (122) and the outer wall (123) of the heat-conducting dinner plate (100) are plated with ceramic material.

2. The constant temperature heating plate according to claim 1, characterized in that: The heating chassis (200) comprises: a heating chassis shell (210) and a heating temperature control system; The heating chassis housing (210) is made of a low thermal conductivity material.

3. The constant temperature heating plate according to claim 2, characterized in that: The heating chassis (200) further includes: a heat insulation ring (220); The heat insulating ring (220) is located between the outer walls of the heat-conducting dinner plate (100) and the heating base shell (210), and the heat insulating ring (220) is made of a low-thermal-conductivity heat-insulating material.

4. The constant temperature heating plate according to claim 1, characterized in that: The heat-conducting dining tray (100) can be detachably arranged on the heating bottom tray (200).

5. The constant temperature heating plate according to claim 3, characterized in that: The heating and temperature control system comprises: a power supply unit and a heating and temperature control unit; the power supply unit can provide electrical energy to the heating and temperature control unit; The heating and temperature control unit comprises: a heating film, a heat conducting plate (240) and a circuit system; The heating film is capable of heating the heat conducting plate (240), the heat conducting plate (240) is in contact with the bottom of the heat conducting dinner plate (100), and the circuit system is connected between the power supply unit and the heating film.

6. The constant temperature heating plate according to claim 5, characterized in that: The circuit system includes: a temperature sensor and a control system; The temperature sensor is embedded in the thermal insulation ring (220); The control system is capable of adjusting the heating rate and temperature based on feedback from the temperature sensor.

7. The constant temperature heating plate according to claim 6, characterized in that: The temperature sensors are respectively embedded in a plurality of side walls of the heat insulation ring (220).

8. The constant temperature heating plate according to claim 6, characterized in that: The temperature sensor is a short-range infrared temperature sensor.

9. The constant temperature heating plate according to claim 5, characterized in that: The heating and temperature control system further comprises: a flexible heat conducting mechanism (230); The flexible heat-conducting mechanism (230) is arranged between the heat-conducting plate (240) and the heat-conducting dining tray (100).

10. The constant temperature heating plate according to claim 5, characterized in that: The power supply unit includes: a battery pack, a sensor and a battery management system; The battery pack is used to supply power to the heating film, and the sensor is used to collect the status of the battery pack, including voltage, current and temperature. The battery management system can monitor the status of the battery pack based on the status data collected by the sensor.

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