Graphene heat source unit production process and its packaging structure

Abstract

The present application belongs to the technical field of kitchen heating appliances, and particularly relates to a graphene heat source unit production process and an encapsulation structure thereof, which is used for producing independent graphene heat source body units that can be freely assembled and matched, and comprises the following steps: S1: one end of a fiberglass fabric is unwound into a tubular furnace, Ar, H2 and CH4 are output by a gas conveying device in the tubular furnace, and a graphene layer is generated by the reaction of Ar, H2 and CH4 and is attached to the surface of the fiberglass fabric, and the other end is wound to form a roll of graphene heat source body; S2: the graphene heat source body is unwound into a dispensing device; S3: the graphene heat source body continuously moves into a copper strip pasting device to paste a copper pole; S4: the graphene heat source body continuously moves into a glue scraping device to perform surface glue coating; S5: the graphene heat source body moves into a back-type oven for heating, and then is wound; and S6: the graphene heat source body is cut, and the cut graphene heat source body unit is edge-sealed, so that an independent combinable graphene heat source body unit can be obtained.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of kitchen heating appliances, and particularly relates to a graphene heat source unit production process and a packaging structure thereof. BACKGROUND

[0002] Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in sp2 hybrid orbitals in a hexagonal honeycomb lattice. It has excellent optical, electrical and mechanical properties and has important application prospects in material science, micro-nano processing, energy, biomedicine and drug delivery. A kitchen heating appliance usually adopts electromagnetic heating or an electric heating tube heating mode to bake food. The former has large energy consumption, and the latter still has large energy consumption and a limited contact area between the electric heating tube and a heating disc, which easily causes uneven heat conduction of the heating disc, resulting in insufficient baking of the food and reduced baking effect of the food. The existing technology uses a graphene coating to realize rapid heating of food by using the characteristics of a graphene heating block and uniform heating. However, the kitchen heating appliance produced by the existing technology has the technical problems of uneven heating and slow temperature rise and fall response. SUMMARY

[0003] The application aims to provide a graphene heat source unit production process and a packaging structure thereof, and aims to solve the technical problems of uneven heating and slow temperature rise and fall response of the kitchen heating appliance in the prior art.

[0004] To achieve the above-mentioned purpose, the graphene heat source unit production process provided by the embodiments of the application comprises the following steps:

[0005] S1: One end of a glass fiber fabric is unwound into a tube furnace, Ar, H2 and CH4 are output by a gas conveying device in the tube furnace to react to form a graphene layer attached to the surface of the glass fiber fabric, the glass fiber fabric continuously conveys to complete continuous attachment of the graphene layer, and the other end is wound to form a roll of graphene heat source bodies;

[0006] S2: The graphene heat source bodies are assembled to an unwinding device, the graphene heat source bodies are unwound into a dispensing device, and the dispensing device performs multi-station dispensing processing on the surface of the graphene heat source bodies;

[0007] S3: The graphene heat source bodies after the dispensing processing continuously move into a copper strip attaching device, and the copper strip attaching device attaches copper poles to the graphene heat source bodies;

[0008] S4: The graphene heat source bodies continue to move into a glue scraping device, and the glue scraping device applies glue to the surface of the graphene heat source bodies;

[0009] S5: the graphene heat source body continues to move into a back-type oven for heating, and the heated graphene heat source body is wound;

[0010] S6: the graphene heat source body is cut according to requirements to form independent units with different powers, and the cut graphene heat source body units are edge-sealed.

[0011] Preferably (fixed writing format), in the S1 step, the tubular furnace is provided with an outer tube and an inner tube, the glass fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas conveying device is located in the inner tube, and a plurality of through holes are formed in the side wall of the inner tube, and the inner tube is sleeved in the outer tube.

[0012] Preferably, in the S1 step, the tubular furnace is divided into an annealing section and a growth section connected in sequence, the annealing section is located at the feeding side of the tubular furnace, the growth section is located at the discharging side of the tubular furnace, and the glass fabric wound on the inner tube sequentially passes through the annealing section and the growth section.

[0013] Preferably, in the S2 step, the graphene heat source body passes through a deviation rectifying device to adjust the transverse position in the movement process before entering the glue dispensing device.

[0014] Preferably, in the S2 step, the glue dispensing device is a multi-station glue dispensing machine, and multi-point glue dispensing processing is completed on the surface of the graphene heat source body.

[0015] Preferably, in the S3 step, the copper strips on the copper strip pasting device are synchronously pasted and cut off at the multi-station processing end of the copper strips corresponding to a plurality of glue points.

[0016] Preferably, in the S4 step, the upper and lower surfaces of the graphene heat source body are subjected to glue scraping treatment.

[0017] Preferably, in the S5 step, the graphene heat source body output from the back-type oven is subjected to deviation rectifying treatment again and then wound, so as to ensure the neatness of the winding.

[0018] Preferably, in the S6 step, the wound graphene heat source body after processing is separated and cut to form a plurality of independent graphene heat source bodies, and then the edges of the graphene heat source bodies are sealed, so as to facilitate free combination according to requirements.

[0019] The one or more technical solutions in the graphene heat source unit production process and the packaging structure provided by the embodiment of the application at least have one of the following technical effects:

[0020] The graphene heat source unit production process in the application pre-treats the surface of the glass fabric to ensure that the surface of the glass fabric is clean and suitable for graphene growth, installs the roll of glass fabric to the sample feeding roller, unwinds through driving the sample feeding roller, and the glass fabric enters the tube furnace, the mixed gas of Ar, H2 and CH4 is input into the tube furnace synchronously, the mixed gas of Ar, H2 and CH4 reacts, CH4 is decomposed in a high-temperature environment, CVD growth of graphene is directly carried out on the surface of the glass fabric, and then the glass fabric with graphene attached is moved and wound on the sample output roller, the wound graphene heat source body roll is placed on the unwinding device, the unwinding device outputs the graphene heat source body roll into the point glue device, a plurality of point glue stations are arranged on the point glue device, the point glue processing can be carried out at any position on the surface of the graphene heat source body roll according to the requirement, the graphene heat source body roll is continuously conveyed to the copper strip pasting device after the point glue processing is completed, the copper strip pasting device is correspondingly provided with a copper strip pasting device corresponding to the point glue station of the point glue device, then the copper strip pasting is cut off, the graphene heat source body roll with the pasted copper strip is continuously input into the glue scraping device to scrape the upper and lower surfaces, so that the final heating efficiency, service life and oxidation resistance, corrosion resistance and other properties of the graphene heat source body are improved, after the glue coating is completed, the graphene heat source body is input into the back type oven for drying treatment, and then is wound to complete the processing operation, the wound graphene heat source body roll is separated and cut according to the requirement, then the edges of the cut graphene heat source body are sealed and glued to protect the edges, and the sealing and gluing can also improve the overall strength, the independent unit of the graphene heat source body produced by the above method can be freely combined and assembled according to the requirement of the user, and the processing efficiency of the heat source itself is effectively improved and the overall thickness is reduced.

[0021] In another embodiment of the application, a packaging structure is provided, which is made of the above-mentioned independent unit of the graphene heat source body, and further comprises an external terminal and a substrate protection layer, the external terminal is electrically connected with the independent units of the graphene heat source body, the external terminal is fixedly installed on the substrate protection layer, and the external terminal penetrates the substrate protection layer, and the substrate protection layer wraps the independent units of the graphene heat source body.

[0022] The above one or more technical solutions of the packaging structure provided by the embodiments of the application at least have one of the following technical effects:

[0023] The packaging structure is combined by one or more graphene heat source bodies produced by the graphene heat source unit production process, and is electrically connected with external terminals. The external terminals penetrate the base material protective layer, and the external terminals are connected with external circuits by contact. The graphene heat source body inside the base material protective layer is electrically connected with the external circuits, and the graphene heat source body is absolutely isolated from the external environment. The safety performance of the heating product using the packaging structure is effectively improved. Through the above structure, the heat source using the packaging structure of the application can ensure safety performance and has higher efficacy performance than market products. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 A flowchart of a graphene heat source unit production process provided by the embodiment of the present application.

[0026] Figure 2 A cross-sectional view of the packaging structure (basic style) provided by the embodiment of the present application.

[0027] In the drawings, various reference signs represent:

[0028] 10 - graphene heat source body 20 - base material protective layer 30 - external terminal DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings 1-2, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0032] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0033] In one embodiment of the present application, as shown in Figure 1 A graphene heat source unit production process is provided, comprising the following steps:

[0034] S1: One end of the glass fabric is unwound into the gas conveying device of the tube furnace to output Ar, H2 and CH4 to react to form a graphene layer attached to the surface of the glass fabric. The glass fabric continuously conveys to complete the continuous attachment of the graphene layer. Ar is used as an inert gas to help maintain the stability of the pressure and temperature of the reaction chamber. H2 is used for reduction and cleaning of the metal substrate surface to promote the growth of graphene. CH4 is the carbon source, which provides carbon atoms required for the growth of graphene after decomposition to deposit graphene film on the surface of the glass fabric. The other end is wound to form a roll of graphene heat source body 10, which has different widths according to requirements.

[0035] S2: The graphene heat source body 10 is assembled to the unwinding device, and the graphene heat source body 10 is unwound into the dispensing device. The dispensing device performs multi-station dispensing processing on the surface of the graphene heat source body 10 to improve the heat conduction efficiency after the copper strip is assembled. The dispensing station can be adjusted according to requirements.

[0036] S3: The graphene heat source body 10 after dispensing processing continuously moves into the copper strip pasting device, and the copper strip pasting device pastes copper poles on the graphene heat source body 10. The copper strip pasting device can paste copper strips of a predetermined length on each dispensing station.

[0037] S4: The graphene heat source body 10 continues to move to the glue scraping device, and the glue scraping device coats glue on the surface of the graphene heat source body 10 to enhance the heat conduction performance of the material and provide a protective barrier.

[0038] S5: The graphene heat source body 10 continues to move into the back-type oven for heating, and the heated graphene heat source body 10 is wound to complete the processing of the surface of the glass fabric;

[0039] S6: The graphene heat source body 10 is cut according to requirements to form independent units of different powers, the edges of the cut graphene heat source body 10 units are sealed, the roll material is cut and separated according to the processing condition of the surface of the roll material and the requirement of the independent units, and the graphene heat source body 10 units of fixed power are obtained.

[0040] The graphene heat source unit production process in the application pre-processes the surface of the glass fabric to ensure that the surface of the glass fabric is clean and suitable for the growth of graphene, installs the roll material of the glass fabric on the sample feeding roller, unwinds the roll material by driving the sample feeding roller, and synchronously inputs the mixed gas of Ar, H2 and CH4 into the tube furnace. The mixed gas of Ar, H2 and CH4 reacts, CH4 is decomposed in a high-temperature environment, graphene is directly grown on the surface of the glass fabric by CVD, and then the glass fabric with graphene is moved and wound on the sample output roller. The wound graphene heat source body 10 roll is placed on the unwinding device, the unwinding device outputs the graphene heat source body 10 roll into the dispensing device, the dispensing device is provided with a plurality of dispensing stations, the dispensing stations can be set according to requirements to dispense the roll material of the graphene heat source body 10 at any position on the surface of the roll material, the roll material of the graphene heat source body 10 after the dispensing processing is continuously conveyed to the copper strip attaching device, the copper strip attaching device corresponds to the dispensing station of the dispensing device to attach the corresponding copper strip, and then the copper strip is cut off to complete the attachment. The roll material of the graphene heat source body 10 after the copper strip is attached continues to enter the glue scraping device to scrape the upper and lower surfaces to improve the heating efficiency, service life, oxidation resistance, corrosion resistance and other properties of the graphene heat source body 10. After the glue coating is completed, the graphene heat source body 10 enters the back-type oven for drying treatment, is wound again, and the processing operation is completed. The roll material of the graphene heat source body 10 after the processing is separated and cut according to requirements, and then the edges of each independent graphene heat source body 10 after the cutting are sealed to protect the edges and improve the overall strength. The independent units of the graphene heat source body 10 produced by the above method can be freely combined and assembled according to the requirements of the user, effectively improve the processing efficiency of the heat source itself, and reduce the overall thickness.

[0041] In another embodiment of the application, as Figure 1As shown in the S1 step, the tubular furnace is provided with an outer tube and an inner tube, the glass fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas conveying device is located in the inner tube, a plurality of through holes are formed in the side wall of the inner tube, the inner tube is sleeved in the outer tube, and the Ar, H2 and CH4 mixed gas reacts on the surface of the glass fabric to form a graphene layer during the movement of the spirally wound glass fabric. The moving mode of the spirally wound glass fabric prolongs the residence time of the glass fabric in the tubular furnace, and improves the quality of the graphene layer.

[0042] In another embodiment of the present application, as shown in Figure 1 As shown in the S1 step, the tubular furnace is divided into an annealing section and a growth section connected in sequence, the annealing section is located at the inlet side of the tubular furnace, the growth section is located at the outlet side of the tubular furnace, and the glass fabric wound on the inner tube passes through the annealing section and the growth section in sequence. This can realize precise regulation of the graphene growth process, improve the quality and performance of the graphene, improve the flatness of the growth substrate, eliminate problems such as step aggregation on the surface of the growth substrate through annealing treatment, improve the flatness of the substrate, provide a more uniform and stable surface for the growth of graphene, and thus facilitate the growth of high-quality graphene, optimize the growth conditions of graphene, adjust the chemical state and surface energy of the growth substrate through annealing treatment, make it more suitable for the growth of graphene, which is helpful to control the growth rate, number of layers and morphology of graphene, realize precise regulation of the graphene growth process, and improve the performance of graphene, such as conductivity, heat resistance and corrosion resistance, so that the graphene can still maintain stable performance in harsh environments such as high temperature and high pressure.

[0043] In another embodiment of the present application, as shown in Figure 1 As shown in the S2 step, the graphene heat source body 10 passes through the deviation correcting device before entering the dispensing device to adjust the transverse position during movement, ensure the accuracy of the dot position, and improve the uniformity of the dot position on the whole surface to ensure the processing quality.

[0044] In another embodiment of the present application, as shown in Figure 1 As shown in the S2 step, the dispensing device is a multi-station dispensing machine, which completes multi-point dispensing processing on the surface of the graphene heat source body 10, and adjusts the dispensing station according to requirements to meet the dispensing processing requirements of different specifications.

[0045] In another embodiment of the present application, as shown in Figure 1 As shown in the S3 step, the copper strip multi-station processing end on the copper strip pasting device synchronously completes the pasting and cutting of the copper strip on a plurality of corresponding glue points, and cooperates with the dispensing processing to realize automatic pasting and cutting of the copper strip.

[0046] In another embodiment of the present application, as shown in Figure 1As shown, in the S4 step, the upper and lower surfaces of the graphene heat source body 10 are subjected to glue scraping treatment. Through glue scraping, an adhesive layer can be formed on the graphene surface. This adhesive layer can form good chemical bonding or physical adsorption with graphene and other materials, thereby improving the adhesion strength between them. This is crucial for ensuring the stability and reliability of graphene heat source materials during long-term use. Glue scraping treatment can form a protective film on the graphene surface, which can isolate or reduce the impact of these adverse factors on graphene, thereby prolonging its service life.

[0047] In another embodiment of the present application, as shown in Figure 1 As shown, in the S5 step, the graphene heat source body 10 output from the return type oven is subjected to rectification treatment again and then is wound up, ensuring the neatness of the winding and maintaining the flatness of the two ends after winding.

[0048] In another embodiment of the present application, as shown in Figure 1 As shown, in the S6 step, the wound graphene heat source body 10 after processing is subjected to separation and cutting, forming a plurality of independent graphene heat source bodies 10, and then the edges are subjected to glue sealing. This is convenient for free combination according to the use requirements, and the specific specifications of the cutting can be different according to the requirements, so that the independent units with fixed specifications that meet different requirements are obtained. According to the specific product requirements, the combination of single graphene body independent units or multiple graphene heat source body 10 independent units is selected to meet the corresponding product requirements.

[0049] Another embodiment of the present application provides a packaging structure, as shown in Figure 2As shown, it is made of the above-mentioned independent units of graphene heat source body 10, and further comprises external terminals 30 and a substrate protection layer 20, the external terminals 30 are electrically connected with the independent units of graphene heat source body 10, the external terminals 30 are fixedly installed on the substrate protection layer 20, and the external terminals 30 penetrate through the substrate protection layer 20, the substrate protection layer 20 wraps the independent units of graphene heat source body 10, and a heat-conducting layer and a heat-insulating layer are arranged between the graphene heat source body 10 and the substrate protection layer 20, the graphene heat source body 10 is located between the heat-conducting layer and the heat-insulating layer, the heat-conducting layer improves the efficiency of heat transfer, can quickly transfer the heat of the graphene heat source body 10 to the upper substrate protection layer 20 area, ensures that the heat is quickly dispersed, prevents local overheating, reduces temperature fluctuation, improves the heating efficiency, the heat-insulating layer effectively reduces the loss of heat downward transmission of the graphene heat source body 10, so that the heat can be concentrated in the graphene heat source body 10 and the substrate protection layer 20 area above, improves the overall energy use efficiency, according to the needs, a silica gel layer can be arranged between the graphene heat source body 10 and the heat-insulating layer and between the graphene heat source body 10 and the heat-conducting layer according to the needs, helps the heat to be evenly distributed, at the same time, plays a certain heat-insulating role, prevents excessive heat loss, helps the heat to be concentrated in the heating area, thereby improving the heating efficiency, the external terminals 30 are used for connecting the graphene heat source body 10 and external circuits, and the external terminals 30 cooperate with the substrate protection layer 20 and the space in the substrate protection layer 20 to be isolated from the outside.

[0050] The packaging structure adopts one or more independent units of graphene heat source body 10 combined by the above-mentioned graphene heat source unit production process, and is electrically connected with external terminals 30, the external terminals 30 penetrate through the substrate protection layer 20, the external terminals 30 are connected with external circuits by contact, realize the electrical connection between the graphene heat source body 10 inside the substrate protection layer 20 and the external circuits, and ensure that the graphene heat source body 10 is absolutely isolated from the external environment, effectively improve the safety performance of the heating product using the packaging structure, through the above-mentioned structure, the heat source using the packaging structure of the application can ensure that the safety performance is higher than that of the market product.

[0051] The remaining part of the embodiment is the same as that of embodiment one, features not explained in the embodiment are explained by using the explanation of embodiment one, and will not be described here.

[0052] The above only describes the preferred embodiments of the application, and is not used to limit the application, any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A process for producing a graphene heat source unit, characterized by, The method comprises the following steps: S1: the glass fiber fabric is unwound from one end of a tube furnace, an Ar, H2, CH4 reaction gas output device of the tube furnace generates graphene layers attached to the surface of the glass fiber fabric, the glass fiber fabric continuously transports to complete the continuous attachment of the graphene layers, and the graphene heat source body roll material is wound from the other end of the tube furnace; In the S1 step, an outer tube and an inner tube are arranged in the tube furnace, the glass fiber fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas output device is located in the inner tube, a plurality of through holes are formed in the side wall of the inner tube, and the inner tube is sleeved on the outer tube; S2: the graphene heat source body is assembled to the unwinding device, the graphene heat source body is unwound into a dispensing device, and the dispensing device performs multi-station dispensing processing on the surface of the graphene heat source body; In the S2 step, the graphene heat source body passes through a deviation rectifying device before entering the dispensing device to adjust the transverse position in the movement process; S3: the graphene heat source body after the dispensing processing continuously moves into a copper strip attaching device, and the copper strip attaching device attaches copper poles to the graphene heat source body; S4: the graphene heat source body continuously moves to a glue scraping device, and the glue scraping device applies glue to the surface of the graphene heat source body; S5: the graphene heat source body continuously moves to a return type oven for heating, and the graphene heat source body after the heating is wound; In the S5 step, the graphene heat source body output from the return type oven is subjected to deviation rectifying treatment again before being wound, so that the winding is neat; S6: the graphene heat source body is cut according to requirements to form independent units with different powers, and the graphene heat source body units after the cutting are edge sealed.

2. The graphene heat source unit production process according to claim 1, characterized in that: In the S1 step, the tube furnace is divided into an annealing section and a growth section connected in series, the annealing section is located at the feeding side of the tube furnace, the growth section is located at the discharging side of the tube furnace, and the glass fiber fabric wound on the inner tube sequentially passes through the annealing section and the growth section.

3. The graphene heat source unit production process according to claim 1, characterized in that: In the S2 step, the dispensing device is a multi-station dispensing machine, which completes multi-point dispensing processing on the surface of the graphene heat source body.

4. The graphene heat source unit production process according to claim 1, characterized in that: In the S3 step, the copper strip multi-station processing end of the copper strip attaching device synchronously completes the copper strip attachment and cutting of a plurality of corresponding glue points.

5. The graphene heat source unit production process according to claim 1, characterized in that: In the S4 step, the upper and lower surfaces of the graphene heat source body are subjected to glue scraping treatment.

6. The graphene heat source unit production process according to claim 1, characterized in that: In the S6 step, the roll material of the graphene heat source body after the processing is separated and cut to form a plurality of independent graphene heat source bodies, and then the edges of the graphene heat source bodies are sealed, so that the graphene heat source bodies can be freely combined according to requirements.

7. A package structure comprising the cut graphene heat source body independent unit produced by the graphene heat source unit production process of any one of claims 1-6, characterized in that: Further comprising an external terminal and a substrate protection layer, the external terminal is electrically connected between a plurality of independent units of the graphene heat source body, the external terminal is fixedly installed on the substrate protection layer, the external terminal penetrates the substrate protection layer, and the substrate protection layer wraps the plurality of independent units of the graphene heat source body.

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