Graphene take-out heat preservation box

Abstract

The utility model discloses a graphene take-out heat preservation box which comprises a box body, a box cover, a graphene heating plate, a storage bin, a temperature sensor and a temperature control system. A plurality of graphene heating plates are arranged in the box body in parallel, so that the storage bin can be quickly and uniformly heated; transverse sliding rails and sliding buckles are arranged at the tops and the bottoms of the front inner plate and the rear inner plate of the box body respectively, a graphene heating plate can slide and be fixed on the transverse sliding rails, the position of the graphene heating plate can be adjusted according to needs to fix a take-out box, and the position and the size of a storage bin can be adjusted and flexible. The heat dissipation plate and the heat dissipation holes which are uniformly and densely arranged in a shape like a Chinese character'tian 'are arranged, so that heat can be quickly and uniformly diffused into the box body; a temperature control system is arranged, the temperature in the storage bin is monitored and controlled in real time to be kept at 65 DEG C, and intelligence and automation are achieved. According to the utility model, the adjustable storage bin is arranged, so that the temperature rise speed and the energy utilization rate are improved, and intelligentization and automation are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of takeout boxes, in particular to a graphene takeout insulation box. Background Art

[0002] As people's yearning for and pursuit of a better life grows, their living standards and quality of life have greatly improved. Their tastes in food have also become increasingly sophisticated, leading to and promoting the booming catering consumption market. The continued growth and upgrading of the online food delivery market, fueled by the large number of working professionals and families with limited cooking skills, has led to a growing emphasis on food quality when choosing food delivery platforms. Providing timely delivery of fresh, temperature-appropriate food to customers has become a key concern for all instant food delivery platforms. Article 33, paragraph 6, of the Food Safety Law, amended for the second time on April 29, 2021, stipulates that "containers, tools, and equipment used for storage, transportation, and loading and unloading of food shall be safe, harmless, and kept clean to prevent food contamination. They shall comply with the special temperature and humidity requirements for food safety. Food shall not be stored or transported together with toxic or hazardous substances." To ensure food safety during delivery and in line with the requirements of the new Food Safety Law, food delivery platforms have adopted a constant temperature of 65°C as a core design principle for their new food delivery boxes. At present, constant temperature takeout boxes mainly use a method of setting heating elements on the bottom or side to heat the box and maintain the temperature inside the box; the commonly used heating elements are resistance heating wires or other heating plates containing resistance heating wires. This type of heating element has the following disadvantages: (1) the heating speed is slow, and it takes more than ten minutes or even half an hour to heat up to 65℃; (2) the temperature is uneven, and there is a safety hazard of local overheating; (3) the energy conversion efficiency is low; (4) if soup is spilled, the stability and safety will drop sharply. In view of the above disadvantages, there are related better design ideas and structures to replace the constant temperature takeout boxes with resistance heating wires or heating plates.

[0003] For example, the Chinese patent with announcement number CN208572466U discloses a graphene electric heating film constant temperature box. The intelligent graphene electric heating film constant temperature box adopts a structure such as a graphene electric heating film and a controller. The temperature of the graphene electric heating film is controlled by the controller to achieve heating and insulation of the constant temperature box. Compared with the existing technology, the intelligent graphene electric heating film constant temperature box has a fast heating speed. Within 6 minutes, the temperature inside the constant temperature box can reach 65°C, which is much faster than the heating time of the existing constant temperature box; secondly, the graphene electric heating film is heated by a DC power supply with a voltage far lower than the safety voltage of the human body. The heating surface is uniform, the temperature is stable, and it is safe and reliable when used; moreover, the graphene electric heating film is light, environmentally friendly, and can be reused many times; in addition, the temperature controller can achieve long-term intelligent temperature control, effectively ensuring that a constant temperature is maintained in the takeaway box during the delivery process. In this utility model, graphene electric heating film is used on the inner wall of the box. Heat is conducted from the inner wall of the box to the middle of the box. It takes time to transfer heat from the periphery to the middle, which may cause temperature differences. In addition, no thermal insulation film or insulation layer is used, which easily leads to problems of heat dissipation and loss.

[0004] Another example is a Chinese patent application, CN208647640U, which discloses a graphene takeout thermostat. The thermostat comprises a main body and a lid. The main body comprises, from the outside inward, a cloth or nylon outer layer, a soft foam insulation layer, and a tinfoil layer. A temperature control device is located between the tinfoil layer and the soft foam insulation layer at the bottom. The device comprises a graphene membrane and a control box connected to the membrane. The control box houses a battery and a temperature control switch electrically connected to the membrane. This utility model incorporates graphene membrane into the takeout box, leveraging its ultra-high energy conversion efficiency to maximize the conversion of electrical energy into heat, keeping the food inside the thermostat warm and reducing energy loss. A tinfoil layer is also incorporated into the lid to enhance the heat radiation range and ensure uniform heating within the box. The graphene heating film used in this utility model is pressed against the bottom of the box by the takeout box, impacting its application and use. If spilled with soup, its stability and safety would also be affected.

[0005] As can be seen from the above patents, graphene heating film has been designed for use in constant-temperature takeout boxes, offering fast heating and high energy conversion efficiency. However, in these constant-temperature takeout boxes, the use of graphene heating film on the inner wall or bottom of the box presents certain challenges. Therefore, the high thermal conductivity of graphene can be utilized to design a graphene-based takeout insulation box. Summary of the Invention

[0006] The purpose of the utility model is to provide a graphene takeaway insulation box in order to solve the deficiencies of the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0008] A graphene takeaway insulation box, comprising a box body, a box cover, a graphene heating plate, a storage bin, a temperature sensor, and a temperature control system;

[0009] The box body is a cuboid box body. A rotatable and openable box cover is provided at the top of the box body. One bottom edge of the box cover is connected to one side of the top of the box body by a rotating hinge; Multiple graphene heating plates are arranged inside the box body. The multiple graphene heating plates are parallel to the left and right inner walls of the box body, dividing the interior of the box body into multiple storage bins;

[0010] The graphene heating plate includes a graphene electrothermal film and a heat dissipation plate. The graphene heating plate has a "heat dissipation plate + graphene electrothermal film + heat dissipation plate" sandwich structure. The graphene electrothermal film includes a graphene heating coating, a PET film, and a polymer insulating film. The graphene heating coating is coated on the PET film, and the polymer insulating film is thermally laminated on the graphene heating coating;

[0011] The temperature sensor is arranged in the middle of the front inner wall plate of the box body. The temperature control system includes a temperature display, a control unit, and a power supply. The temperature display is embedded in the control unit, and the control unit is embedded in the upper part of the front inner wall plate of the box body; The control unit is electrically connected to the temperature sensor and the graphene electrothermal film respectively.

[0012] Preferably, horizontal sliding rails are respectively arranged at the top and bottom of the front and rear inner plates of the box body, and multiple sliding buckles for fixing the graphene heating plate are arranged on the tracks of the horizontal sliding rails.

[0013] Preferably, sliding rings are arranged at the four corners of the graphene heating plate, and the sliding rings are embedded between the graphene electrothermal film and the heat dissipation plate.

[0014] By adopting the above technical solution, the graphene heating plate can slide on the horizontal sliding rail, and the position of the graphene heating plate can be adjusted according to the size of the takeaway box to fix the takeaway box well, preventing the takeaway box from tilting or even overturning during the delivery process; At the same time, the position of the graphene heating plate is fixed on the track of the horizontal sliding rail by the sliding buckle.

[0015] Preferably, the graphene electrothermal film is a graphene heating film or multiple graphene heating films, and the multiple graphene heating films are arranged in series or in parallel.

[0016] Preferably, the heat dissipation plate is an aluminum plate with heat dissipation holes, and the heat dissipation holes are uniformly arranged in a "field" shape.

[0017] By adopting the above technical solution, the heat generated by the graphene electrothermal film can pass through the micropores on the heat dissipation plate and quickly and evenly diffuse into the interior of the box body, thereby quickly and evenly heating the storage bin.

[0018] Preferably, the heat dissipation plate and the graphene electrothermal film are adhesively bonded together with a thermally conductive adhesive, and at the same time, a plurality of fasteners are used to reinforce the edges of the four sides of the graphene heating plate.

[0019] By adopting the above technical solution, the edge of the graphene heating plate can be fastened, and it will not fall off due to the aging of the glue, affecting the use of the graphene heating plate.

[0020] Preferably, the power supply of the temperature control system is a storage battery or a rechargeable battery, which is embedded in the temperature control system or an external DC power supply.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The present utility model provides a graphene takeaway insulation box, which has the following advantages:

[0023] 1. A plurality of graphene heating plates are arranged in parallel in the box body, which can quickly and evenly heat the storage bin;

[0024] 2. Horizontal slide rails and sliding buckles are respectively arranged at the top and bottom of the front and rear inner plates of the box body. The graphene heating plates can slide and be fixed on the horizontal slide rails, and the position of the graphene heating plates can be adjusted as needed to fix the takeaway box, realizing the adjustability and flexibility of the position and size of the storage bin;

[0025] 3. A heat dissipation plate and heat dissipation holes arranged in a "field" - shaped and evenly dense arrangement are provided. The generated heat can pass through the micropores on the heat dissipation plate and quickly and evenly diffuse into the box body, thereby quickly and evenly heating the storage bin;

[0026] 4. A temperature control system is provided to monitor and control the temperature in the storage bin to be maintained at 65 °C in real - time, realizing intelligence and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0029] Figure 1 This is a structural schematic diagram of a graphene takeaway insulation box proposed in the utility model;

[0030] Figure 2 This is a schematic diagram of the top view of the graphene takeaway insulation box proposed in the utility model;

[0031] Figure 3 This is a structural schematic diagram of a graphene heating plate of a graphene takeaway thermal insulation box proposed in the present invention;

[0032] Figure 1 As shown in: 1. Box body, 2. Box cover, 3. Graphene heating plate, 4. Storage compartment, 5. Temperature sensor, 6. Temperature control system;

[0033] Figure 2 As shown in: 1. Box, 3. Graphene heating plate, 4. Storage compartment, 5. Temperature sensor, 6. Temperature control system;

[0034] Figure 3 As shown in: 31, graphene heating element, 32, heat sink; 311, graphene heating coating, 312, PET film, 313, polymer insulating film. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] It should be noted that similar reference numerals and letters tend to denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is typically placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of the present utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present utility model. In addition, the terms "first," "second," etc., etc., are used only to distinguish descriptions and should not be understood as indicating or implying relative importance.

[0040] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] Reference Figure 1 and Figure 2 The utility model discloses a graphene takeaway insulation box, comprising a box body 1, a box cover 2, a graphene heating plate 3, a storage bin 4, a temperature sensor 5 and a temperature control system 6;

[0042] The rectangular box body 1 and the box cover 2 constitute the outer shell of the graphene takeaway insulation box. Multiple parallel graphene heating plates 3 are arranged in the box body 1 for generating heat when powered on; and multiple parallel storage compartments 4 are separated for storing takeaway boxes.

[0043] In an optional embodiment, horizontal sliding rails are respectively provided at the top and bottom of the front and rear inner plates of the box body 1. The horizontal sliding rails are used for the sliding of the graphene heating plate 3. Multiple sliding buckles are provided on the tracks of the horizontal sliding rails. The sliding buckles are used for sliding adjustment and fixing of the graphene heating plate 3. At the same time, sliding rings are provided at the four corners of the graphene heating plate 3. The sliding rings are embedded and fixed between the graphene electric heating film 31 and the heat dissipation plate 32. The sliding rings are used for sliding on the horizontal sliding rails. The position of the graphene heating plate 3 can be adjusted according to the size of the takeout box to fix the takeout box well, preventing the takeout box from tilting or even overturning during the delivery process. At the same time, the position of the graphene heating plate 3 is fixed on the track of the horizontal sliding rail by the sliding buckles, realizing the adjustability and flexibility of the position and size of the storage bin 4.

[0044] See Figure 3 , the graphene heating plate 3 is a "heat dissipation plate 32 + graphene electric heating film 31 + heat dissipation plate 32" sandwich structure. The graphene electric heating film 31 includes a graphene heating coating 311, a PET film 312, and a polymer insulating film 313. The heat dissipation plate 32 can be an aluminum plate, using the low density and high thermal conductivity of aluminum to conduct and dissipate heat.

[0045] In an optional embodiment, heat dissipation holes arranged in a "field" - shaped and evenly distributed manner are provided on the heat dissipation plate 32, which are used to quickly and evenly diffuse the heat generated by the graphene electric heating film 31 into the interior of the box body 1, and then quickly and evenly heat the storage bin 4.

[0046] In an optional embodiment, the graphene electric heating film 31 is a single - piece graphene heating film or multiple graphene heating films connected in series or parallel, which is used for generating heat when powered on.

[0047] In an optional embodiment, the graphene electric heating film 31 and the heat dissipation plate 32 are adhered together by thermal conductive glue and closely fitted. At the same time, multiple fasteners are used to reinforce the edges of the four sides of the graphene heating plate 3, enhancing the fixation and sealing at the same time.

[0048] In an optional embodiment, in the graphene electrothermal film 31, the PET film 312 is the substrate, which is used to coat the graphene heating coating 311 and at the same time is used to isolate and insulate the graphene heating coating 311 from the heat dissipation plate 32; a "field" - shaped network - like silver electrode strip is arranged on the graphene heating coating 311, and the edge of the silver electrode strip completely covers the graphene heating coating 311, so as to facilitate rapid and uniform overall heating and heat generation; a graphene strip is arranged between the silver electrode strip and the PET film 312, which is used to prevent the direct contact between the silver electrode strip and the PET base film 312 and prevent the reaction between the electrode strip and the PET base film 312, so as not to affect the normal use and even the service life of the electrode strip and the PET base film 312. On both sides of the middle part of the upper surface of the silver electrode strip, electrode current - carrying strips are provided; a connection terminal is arranged between the electrode current - carrying strip and the silver electrode strip, the connection terminal penetrates through the electrode current - carrying strip and is fixed on the silver electrode strip, and the connection terminal connects the power supply line and then is electrically connected to the temperature control system 6. A polymer insulating film 313 is thermally laminated on the graphene heating coating 311, which is convenient for using the high - voltage breakdown resistance and anti - peeling force performance of the polymer insulating film 313 and at the same time extends the service life; at the same time, the polymer insulating film 313 is used to isolate and insulate the graphene heating coating 311 from the heat dissipation plate 32.

[0049] The temperature sensor 5 is arranged in the middle of the front inner wall plate of the box body 1. The temperature control system 6 includes a temperature display, a control unit and a power supply. The temperature display is embedded in the control unit, and the control unit is embedded in the upper part of the front inner wall plate of the box body 1, which is convenient for observing and controlling the working conditions in the box body 1; the control unit is electrically connected to the temperature sensor 5 and the graphene electrothermal film 31 respectively. The power supply is a storage battery or a rechargeable battery, which is embedded in the temperature control system 6, or an external DC power supply, which provides electrical energy for the graphene electrothermal film 31.

[0050] During operation, first turn on the power supply. The temperature sensor monitors the temperature of the storage bin 4 in the box body 1 in real time. When the temperature in the storage bin 4 is lower than 65 °C, the control unit issues a heating instruction to power on the graphene electrothermal film 31. The graphene electrothermal film 31 quickly heats up and generates heat, and the temperature in the storage bin 4 quickly reaches 65 °C through convection, conduction, thermal radiation and other methods. The control unit issues a heat preservation instruction to start the heat preservation mode and cut off the power supply to the graphene electrothermal film 31. The graphene electrothermal film 31 does not heat and is in the heat preservation mode. When the temperature in the storage bin 4 is lower than 65 °C, the control unit issues a heating instruction again to power on the graphene electrothermal film 31. The graphene electrothermal film 31 quickly heats up and generates heat to make the temperature in the storage bin 4 quickly return to 65 °C; thus, the temperature in the constant temperature box can be continuously maintained at 65 °C, reaching a constant temperature state, and realizing intelligence and automation.

[0051] Of course, the embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A graphene takeaway insulation box, characterized by: It includes a box body (1), a box cover (2), a graphene heating plate (3), a storage bin (4), a temperature sensor (5), and a temperature control system (6). The box body (1) is a cuboid box body. A box cover (2) that can be flipped open is provided at the top of the box body (1). One bottom edge of the box cover (2) is connected to one side of the top of the box body (1) by a rotating hinge. Multiple graphene heating plates (3) are provided inside the box body (1). The multiple graphene heating plates (3) are parallel to the left and right inner walls of the box body (1), and the inside of the box body (1) is divided into multiple storage bins (4). The graphene heating plate (3) includes a graphene electrothermal film (31) and a heat dissipation plate (32). The graphene heating plate (3) has a "heat dissipation plate (32) + graphene electrothermal film (31) + heat dissipation plate (32)" sandwich structure. The graphene electrothermal film (31) includes a graphene heating coating (311), a PET film (312), and a polymer insulating film (313). The graphene heating coating (311) is coated on the PET film (312), and the polymer insulating film (313) is thermally laminated on the graphene heating coating (311). The temperature sensor (5) is provided in the middle of the front inner wall plate of the box body (1). The temperature control system (6) includes a temperature display, a control unit, and a power supply. The temperature display is embedded in the control unit. The control unit is embedded in the upper part of the front inner wall plate of the box body (1). The control unit is electrically connected to the temperature sensor (5) and the graphene electrothermal film (31) respectively.

2. The graphene takeaway insulation box according to claim 1, characterized in that: Horizontal slide rails are respectively provided at the top and bottom of the front and rear inner plates of the box body (1). Multiple sliding buckles for fixing the graphene heating plate (3) are provided on the tracks of the horizontal slide rails.

3. The graphene takeaway insulation box according to claim 2, characterized in that: Sliding rings are provided at the four corners of the graphene heating plate (3), and the sliding rings are embedded between the graphene electrothermal film (31) and the heat dissipation plate (32).

4. The graphene takeaway insulation box according to claim 1, characterized in that: The graphene electrothermal film (31) is a graphene heating film or multiple graphene heating films, and the multiple graphene heating films are arranged in series or in parallel.

5. The graphene takeaway thermal insulation box according to claim 1, characterized in that: The heat dissipation plate (32) is an aluminum plate with heat dissipation holes, and the heat dissipation holes are uniformly and densely arranged in a "field" shape.

6. The graphene takeaway thermal insulation box according to claim 1, characterized in that: The heat dissipation plate (32) and the graphene electrothermal film (31) are glued together by a heat-conducting adhesive and are closely adhered to each other. At the same time, multiple fasteners are used to reinforce the edges of the four sides of the graphene heating plate (3).

7. The graphene takeaway thermal insulation box according to claim 1, characterized in that: The power supply of the temperature control system (6) is a storage battery or a rechargeable battery, which is embedded in the temperature control system (6), or an external DC power supply.

Images