Graphene far infrared heat preservation plate

Abstract

The utility model relates to the technical field of heat preservation tray, concretely is graphene far infrared heat preservation tray, including shell, the shell is the box body structure of top opening, the heat shield is fixedly installed to shell inner side wall, the heat shield top is filled with the heat insulation cotton, the heat insulation cotton top fixed mounting has the mica sheet layer, the mica sheet layer top is connected with the graphene layer that sets up pasting, the graphene layer both ends are connected with circuit board through the wire electricity, the graphene layer top is covered with the microcrystalline glass panel, the microcrystalline glass panel edge and shell top edge fixed connection, the utility model: adapt to multiple scenes: good portability, both applicable to the heat preservation of family daily meal, also can be used in restaurant kitchen temporary heat preservation, office afternoon tea beverage heat preservation scene, solved the limitation of traditional large heat preservation equipment " scene single, inconvenient removal", the more wide application range.

Description

Technical Field

[0001] This utility model relates to the field of heat preservation plate technology, specifically a graphene far-infrared heat preservation plate. Background Technology

[0002] In daily life and catering services, if food is not consumed promptly after cooking, its temperature will drop rapidly. This not only leads to a decline in taste but also may cause bacterial growth in some foods, posing a food safety hazard. Existing heat preservation equipment mostly uses traditional resistance wire heating or water circulation heating methods, which suffer from problems such as low heating efficiency, poor temperature control accuracy, high energy consumption, and uneven heating of the insulated area.

[0003] Traditional resistance wire heating warming trays rely on air convection and heat conduction for heat transfer, resulting in slow heating speeds and excessively high temperatures near the heating wire while areas further away remain cold. This can lead to localized overheating and spoilage of food, while other areas remain undercooked. Water-circulating heating warming trays, on the other hand, suffer from complex structures, a high risk of leakage, and high maintenance costs. Furthermore, they exhibit significant energy loss during heating, failing to meet current energy-saving and environmental protection requirements. In addition, most existing warming trays are bulky and lack portability, making them unsuitable for the small-scale and diverse warming needs of households. Therefore, we propose a warming device that offers high heating efficiency, precise temperature control, energy efficiency, safety, and portability to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a graphene far-infrared heat preservation plate to solve the problems of low heating efficiency, uneven heating, poor temperature control accuracy, high energy consumption and poor portability of existing heat preservation equipment mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The graphene far-infrared heat preservation plate includes an outer shell, which is a box structure with an open top. A heat insulation cover is fixedly installed on the inner side wall of the outer shell, and the top of the heat insulation cover is filled with heat insulation cotton. A mica sheet layer is fixedly installed on the top of the heat insulation cotton; a graphene layer is attached to the top of the mica sheet layer, and the two ends of the graphene layer are electrically connected to the circuit board through wires. The graphene layer is covered with a microcrystalline glass panel, and the edge of the microcrystalline glass panel is fixedly connected to the top edge of the outer shell; An aluminum shell is provided on the inner side of the outer casing, the top of the aluminum shell is open, and the top of the aluminum shell is attached to the microcrystalline glass panel; The bottom of the aluminum shell is detachably connected to the pressure plate and heat insulation cover by screws; a temperature sensor is provided on the inner side wall of the aluminum shell, and the temperature sensor is electrically connected to the circuit board; a spring is provided on the outer wall of the temperature sensor, the top of the spring is in contact with the temperature sensor, and the bottom of the spring is in contact with the pressure plate.

[0006] In a preferred embodiment of this utility model, a circuit board mounting base is fixed to the inner side of the bottom of the outer shell, and a circuit board is fixedly mounted on the circuit board mounting base. The circuit board is electrically connected to the control circuit board and the power cord, and the control circuit board is electrically connected to the control panel.

[0007] In a preferred embodiment of the present invention, a heat dissipation hole is provided on one side of the bottom of the outer casing, and a cooling fan is fixedly installed on the bottom of the outer casing at the position corresponding to the heat dissipation hole. The cooling fan is electrically connected to the circuit board.

[0008] In a preferred embodiment of the present invention, a power cord outlet is provided on one side wall of the housing, and the circuit board is electrically connected to the power cord connector through another set of power cords passing through the power cord outlet. The power cord connector is disposed on the control circuit board.

[0009] In a preferred embodiment of this utility model, a power plug is fixedly connected to the other end of the power cord.

[0010] In a preferred embodiment of this utility model, anti-slip rubber pads are fixedly installed at the four corners of the bottom of the outer shell; the heat insulation cover is made of ceramic fiber material, and the heat insulation cotton is made of glass wool material.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0012] High-precision temperature measurement and real-time feedback: A PT100 platinum resistance temperature sensor is installed between the aluminum shell and the microcrystalline glass panel, with a temperature measurement accuracy of ±0.5℃. It can detect the panel temperature in real time and transmit the data to the control circuit board, avoiding problems such as "overheating and deterioration" or "low temperature and poor heat preservation" caused by temperature detection errors. Intelligent temperature control, constant and stable temperature: The control circuit board integrates a temperature control module, which supports a wide temperature range of 30℃-80℃. The target temperature can be accurately set according to the heat preservation requirements of different items such as food and beverages. Shock absorption and protection, extending component life: Springs are symmetrically installed between the aluminum shell and the bottom of the outer shell to buffer the vibration when the equipment is moved or placed, preventing brittle components such as graphene layer and mica sheet layer from cracking or falling off due to vibration.

[0013] Easy to clean and maintain: The top microcrystalline glass panel has a smooth, high-temperature resistant, and oil-free surface. It can be cleaned simply by wiping with a damp cloth after use, avoiding the problem of traditional stainless steel panels being prone to stains and difficult to clean. Suitable for multiple scenarios: It is highly portable and suitable for keeping food warm at home, as well as for temporary warming in restaurant kitchens and keeping drinks warm for afternoon tea in offices. It solves the limitations of traditional large-scale warming equipment that is "limited to a single scenario and inconvenient to move", and has a wider range of applications. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 Three-dimensional graphene far-infrared heat preservation plate Figure 1 ; Figure 2 Three-dimensional graphene far-infrared heat preservation plate Figure 2 ; Figure 3 Top view of the graphene far-infrared heat preservation plate; Figure 4 This is a cross-sectional view of the graphene far-infrared heat preservation plate. Figure 5 A schematic diagram of the structure of the mica sheet layer, graphene layer and microcrystalline glass panel in the graphene far-infrared heat preservation plate. Figure 6 This is a schematic diagram of the control screen and control circuit board structure in a graphene far-infrared heat preservation plate.

[0015] In the diagram: 1. Outer shell; 2. Heat insulation cover; 3. Heat insulation cotton; 4. Mica sheet layer; 5. Graphene layer; 6. Microcrystalline glass panel; 7. Pressure plate; 8. Aluminum shell; 9. Temperature sensor; 10. Spring; 11. Circuit board; 12. Cooling fan; 13. Power cord; 14. Power plug; 15. Heat dissipation hole; 16. Power cord outlet; 17. Control panel; 18. Control circuit board; 19. Power cord connector. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please refer to Figure 1-6The graphene far-infrared heat preservation plate includes an outer shell 1, which is a box structure with an open top. A heat insulation cover 2 is attached to the inner wall of the outer shell 1, and heat insulation cotton 3 is installed on the top of the heat insulation cover 2. Through the cooperation of the heat insulation cover 2 and the heat insulation cotton 3, the heat loss from the inside of the heat preservation plate can be effectively reduced, improving the heat preservation effect, while preventing the outer shell 1 from overheating and causing burns to the user. A mica sheet layer 4 has good insulation and high temperature resistance, which can provide insulation protection for the heating structure above. A graphene layer 5 is attached to the top of the mica sheet layer 4. The graphene layer 5 is a sheet structure, and its two ends are connected to the circuit board 11 through wires. Electrical connection: The graphene layer 5 is a high-efficiency heating layer of graphene composite semiconductor material, which can ensure that the high-efficiency heating layer of graphene composite semiconductor material can effectively convert electrical energy into heat energy. After the graphene layer 5 is powered on, it can quickly generate far-infrared rays and release heat. Using far-infrared heating, the heat can be directly applied to the item being insulated, with high heating efficiency and uniform heating. The graphene layer 5 is topped with a microcrystalline glass panel 6, the edge of which is fixedly connected to the top edge of the outer shell 1. The pressure plate 7 is detachably connected to the aluminum shell 8 by screws, facilitating future maintenance and replacement of the internal structure. A temperature sensor 9 is installed on the inner wall of the aluminum shell 8, and the temperature sensor 9 is electrically connected to the circuit board 11. The temperature sensor 9 can detect the temperature of the microcrystalline glass panel 6 in real time and transmit the temperature data to the circuit board 11, thereby achieving precise monitoring of the insulation temperature. A circuit board mounting base is fixed to the bottom inner side of the outer casing 1. A circuit board 11 is fixedly mounted on the circuit board mounting base. The power board 11 is electrically connected to the control circuit board 18 and the power line 13 respectively. The control circuit board 18 integrates a microcontroller, a temperature control module and a display driver module. The control circuit board 18 is electrically connected to the control screen 17. The control screen 17 adopts a touch-screen LCD display, which can be used to display the current heat preservation temperature, set the heat preservation time and target temperature, and also supports users to adjust the heat preservation parameters through touch operation. A heat dissipation hole 15 is provided on one side of the bottom of the outer casing 1. A cooling fan 12 is fixedly installed at the position corresponding to the heat dissipation hole 15 on the bottom of the outer casing 1. The cooling fan 12 is electrically connected to the circuit board 11. When the cooling fan 12 is working, it can dissipate the heat generated by the circuit board 11 inside the outer casing 1 through the heat dissipation hole 15, so as to avoid damage to electronic components due to high temperature and extend the service life of the equipment. A power cord outlet 16 is provided on one side wall of the outer casing 1. The circuit board 11 is electrically connected to the power cord connector 19 through the power cord outlet 16 via another set of power cords. The power cord connector 19 is set on the control circuit board 18. The other end of the power cord 13 is fixedly connected to the power plug 14. The power plug 14 can be plugged into a household 220V power socket to provide power support for the entire insulation plate. A spring 10 is provided on the outer wall of the temperature sensor 9. The top of the spring 10 contacts the temperature sensor 9, and the bottom of the spring 10 contacts the pressure plate 7.

[0018] The heat insulation cover 2 is made of ceramic fiber, which has excellent heat insulation performance, high temperature resistance and low thermal conductivity, which can further enhance the heat insulation effect of the heat insulation plate and reduce heat loss. The heat insulation cotton 3 is made of glass wool, which is soft and has low density. It is filled inside the heat insulation cover 2 and can form a double heat insulation structure with the heat insulation cover 2 to further improve the heat preservation efficiency.

[0019] The graphene layer 5 has a thickness of 0.3mm. Within this thickness range, the graphene layer 5 can ensure rapid heating after being powered on, generating sufficient far-infrared rays, while avoiding heat accumulation or energy waste due to excessive thickness. At the same time, it is easy to bond and install with the mica sheet layer 4 and the microcrystalline glass panel 6.

[0020] The thickness of the microcrystalline glass panel 6 is 4mm. The microcrystalline glass material has the characteristics of high temperature resistance, impact resistance, smooth surface and easy cleaning. The 4mm thickness can ensure that the panel has sufficient structural strength to prevent damage caused by placing heavy objects or slight collisions. At the same time, it does not affect the far-infrared rays generated by the graphene layer 5 to penetrate the panel and act on the insulated items.

[0021] Temperature sensor 9 uses a PT100 platinum resistance temperature sensor. The PT100 temperature sensor has the advantages of high measurement accuracy, good stability and wide temperature range (-200℃-650℃). It can accurately detect the temperature change of the microcrystalline glass panel 6, and the detection error is controlled within ±0.5℃, ensuring that the control circuit board 18 can adjust the heating power of the graphene layer 5 in a timely manner according to the temperature data.

[0022] The temperature control module on the control circuit board 18 supports a temperature adjustment range of 30℃-80℃. Users can adjust the target temperature through the control panel 17 according to the heat preservation requirements of different foods (such as setting the temperature of rice and dishes to 40℃-60℃ and the temperature of beverages to 50℃-70℃). When the temperature sensor 9 detects that the temperature of the microcrystalline glass panel 6 has reached the set value, the control circuit board 18 will automatically cut off part of the power supply to the graphene layer 5 to reduce the heating power. When the temperature is lower than the lower limit of the set value (usually 3-5℃ lower than the set value), the control circuit board 18 will automatically increase the power supply to keep the temperature within the set range and achieve constant temperature heat preservation.

[0023] The cooling fan 12 is a silent axial fan with an operating noise level below 35 decibels, avoiding noise from the fan affecting the user experience. At the same time, the cooling fan 12 is electrically connected to the circuit board. When the control circuit board 18 detects that the internal temperature of the casing 1 is higher than 45°C, it automatically starts the cooling fan 12 and automatically shuts it off when the temperature is lower than 30°C, further saving energy.

[0024] The bottom four corners of the outer casing 1 are all fixedly equipped with anti-slip rubber pads. The anti-slip rubber pads have good anti-slip performance and can prevent the heat preservation tray from sliding due to accidental collisions when placed on the table, thus improving the safety of use. At the same time, the rubber pads can also play a certain role in shock absorption, reducing the vibration generated by the device during operation and reducing the transmission of vibration to the table.

[0025] The working principle of this utility model is as follows: the power plug 14 is inserted into a household 220V socket, and the circuit board 11 supplies power to the entire device; the user sets the target heat preservation temperature (30℃-80℃) through the control panel 17, and after the control circuit board 18 receives the instruction, it supplies power to the graphene layer 5. The graphene layer 5 generates far-infrared rays and releases heat. The heat penetrates the microcrystalline glass panel 6 and is transferred to the food placed on the panel to achieve heating and heat preservation.

[0026] Temperature sensor 9 detects the temperature of the microcrystalline glass panel 6 in real time and transmits the data to the control circuit board 18. When the temperature reaches the set value, the control circuit board 18 reduces the power supply of the graphene layer 5 to maintain temperature stability. When the temperature is lower than the lower limit of the set value (3-5℃ lower than the set value), the control circuit board 18 increases the power supply to ensure constant temperature.

[0027] Meanwhile, the control circuit board 18 monitors the internal temperature of the outer casing 1 in real time. When the temperature is higher than 45℃, the cooling fan 12 is activated to dissipate internal heat through the heat dissipation holes 15; when the temperature is lower than 30℃, the cooling fan 12 is turned off to save energy. The heat insulation cover 2 and the heat insulation cotton 3 can reduce internal heat loss, improve heat preservation efficiency, and prevent the temperature of the outer casing 1 from becoming too high. The spring 10 and the bottom anti-slip rubber pad play a role in shock absorption and anti-slip, ensuring stable use of the equipment.

[0028] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. Graphene far infrared heat preservation plate, characterized in that: Includes an outer shell (1), which is a box structure with an open top. A heat insulation cover (2) is fixedly installed on the inner side wall of the outer shell (1), and the top of the heat insulation cover (2) is filled with heat insulation cotton (3). A mica sheet layer (4) is fixedly installed on the top of the heat insulation cotton (3); a graphene layer (5) is attached to the top of the mica sheet layer (4), and the two ends of the graphene layer (5) are electrically connected to the circuit board (11) through wires. The graphene layer (5) is covered with a microcrystalline glass panel (6), and the edge of the microcrystalline glass panel (6) is fixedly connected to the top edge of the outer shell (1). An aluminum shell (8) is provided on the inner side of the outer shell (1), the top of the aluminum shell (8) is open, and the top of the aluminum shell (8) is attached to the microcrystalline glass panel (6); The bottom of the aluminum shell (8) is detachably connected to the pressure plate (7) and the heat insulation cover (2) by screws; a temperature sensor (9) is provided on the inner side wall of the aluminum shell (8), and the temperature sensor (9) is electrically connected to the circuit board (11); a spring (10) is provided on the outer wall of the temperature sensor (9), the top of the spring (10) is in contact with the temperature sensor (9), and the bottom of the spring (10) is in contact with the pressure plate (7).

2. The graphene far-infrared heat-retention plate according to claim 1, characterized in that, A circuit board mounting base is fixed on the bottom inner side of the outer casing (1), and a circuit board (11) is fixedly mounted on the circuit board mounting base. The circuit board (11) is electrically connected to the control circuit board (18) and the power line (13) respectively. The control circuit board (18) is electrically connected to the control screen (17).

3. The graphene far-infrared heat-retention plate according to claim 1, characterized in that, A heat dissipation hole (15) is provided on one side of the bottom of the outer casing (1). A cooling fan (12) is fixedly installed at the bottom of the outer casing (1) corresponding to the heat dissipation hole (15). The cooling fan (12) is electrically connected to the circuit board (11).

4. The graphene far-infrared heat-retention plate according to claim 1, characterized in that, The outer casing (1) has a power cord outlet (16) on one side wall. The circuit board (11) is electrically connected to the power cord connector (19) through another set of power cords passing through the power cord outlet (16). The power cord connector (19) is located on the control circuit board (18).

5. The graphene far-infrared heat-retention plate according to claim 2, characterized in that, The other end of the power cord (13) is fixedly connected to a power plug (14).

6. The graphene far-infrared heat-retentive plate according to claim 1, wherein The outer shell (1) has anti-slip rubber pads fixedly installed at the four corners of the bottom; the heat insulation cover (2) is made of ceramic fiber material, and the heat insulation cotton (3) is made of glass wool material.

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